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1

Activity-based costing for electric utilities  

Microsoft Academic Search

This EPRI report is a primer'' on Activity-Based Costing (ABC). ABC is a cost management aproach which can make an important contribution to understanding and controlling the changing costs in the electric utility industry. It is a method for attributing costs to activities, products and services by better understanding the underlying factors which drive those costs. ABC can help utility

D. R. Croyle; I. A. Schapiro; P. M. Keglevic

1992-01-01

2

Application of activity-based costing quality cost accounting research  

Microsoft Academic Search

Chinese current domestic quality cost management is still in the initial stage, having a lot of problems in theory and application. This paper analyses the feasibility of the activity-based costing method in quality cost management, taking a large foundries in domestic for an example, applying activity-based costing for accounting quality cost, providing accurate cost information and data basis for quality

Wu Zheng; Kuo-ran Yang; Bing Li; Hang Li; Yan-ling Zhao

2011-01-01

3

Cost of Offshore Wind Energy Charlene Nalubega  

E-print Network

Cost of Offshore Wind Energy water as well as on land based wind farms. The specific offshore wind energy case under consideration kilowatt Hour will be determined. Wind Energy has been around for a very long time. It started as out

Mountziaris, T. J.

4

Application of activity-based costing on cost accounting of acupuncture project  

Microsoft Academic Search

Nowadays, hospital managers pay more and more attention to the cost accounting in order to reduce the hospital operating cost and improve efficiency. The appearance of activity-based costing (ABC), whose idea is \\

Hui Li; Zi-xian Liu; Yan-li Lu; Jing Xu

2011-01-01

5

Activity-Based Costing in the After Press Services Industry  

NASA Astrophysics Data System (ADS)

This research was conducted to apply activity-based costing (ABC) in an after press service company in Chiang Mai province, Thailand. The company produces all of its products by one-stop service (such as coating, stitching, binding, die cutting, and gluing). All products are made to order, and have different sizes and patterns. A strategy of low price is used to compete in the marketplace. After cost analysis, the study found that the company has high overhead (36.5% of total cost). The company's problem is its use of traditional cost accounting, which has low accuracy in assigning overhead costs. If management uses this information when pricing customer orders, losses may occur because real production costs may be higher than the selling price. Therefore, the application of ABC in cost analysis can help executives receive accurate cost information; establish a sound pricing strategy; and improve the manufacturing process by determining work activities which have excessively high production costs. According to this research, 6 out of 56 items had a production cost higher than the selling price, leading to losses of 123,923 baht per year. Methods used to solve this problem were: reducing production costs; establishing suitable prices; and creating a sales promotion with lower prices for customers whose orders include processes involving unused capacity. These actions will increase overall sales of the company, and allow more efficient use of its machinery.

Shevasuthisilp, Suntichai; Punsathitwong, Kosum

2009-10-01

6

Application of activity-based costing to the logistics cost management of agricultural products  

Microsoft Academic Search

This paper describes the logistics characteristics of agricultural products like fruits and vegetables, combing the mode of logistics operation in our county, and proposes to apply activity-based costing (ABC)to the costs accounting of agricultural products like fruits and vegetables, this will not only improve the accuracy , but also strengthen the control of the cost accounting of agricultural products like

Jing Zang; Keming Zhang; Rui Zhao

2008-01-01

7

Sensitivity Analysis of Offshore Wind Cost of Energy (Poster)  

SciTech Connect

No matter the source, offshore wind energy plant cost estimates are significantly higher than for land-based projects. For instance, a National Renewable Energy Laboratory (NREL) review on the 2010 cost of wind energy found baseline cost estimates for onshore wind energy systems to be 71 dollars per megawatt-hour ($/MWh), versus 225 $/MWh for offshore systems. There are many ways that innovation can be used to reduce the high costs of offshore wind energy. However, the use of such innovation impacts the cost of energy because of the highly coupled nature of the system. For example, the deployment of multimegawatt turbines can reduce the number of turbines, thereby reducing the operation and maintenance (O&M) costs associated with vessel acquisition and use. On the other hand, larger turbines may require more specialized vessels and infrastructure to perform the same operations, which could result in higher costs. To better understand the full impact of a design decision on offshore wind energy system performance and cost, a system analysis approach is needed. In 2011-2012, NREL began development of a wind energy systems engineering software tool to support offshore wind energy system analysis. The tool combines engineering and cost models to represent an entire offshore wind energy plant and to perform system cost sensitivity analysis and optimization. Initial results were collected by applying the tool to conduct a sensitivity analysis on a baseline offshore wind energy system using 5-MW and 6-MW NREL reference turbines. Results included information on rotor diameter, hub height, power rating, and maximum allowable tip speeds.

Dykes, K.; Ning, A.; Graf, P.; Scott, G.; Damiami, R.; Hand, M.; Meadows, R.; Musial, W.; Moriarty, P.; Veers, P.

2012-10-01

8

Cut drydocking costs for offshore rigs  

SciTech Connect

Heavy-lift transport vessels (HLVs) can provide an economic alternative to the conventional shipyard approach of drydocking mobile offshore rigs for regulatory body inspections and/or repairs. Contractors now can drydock rigs in areas of the world where conventional drydocks are unavailable. This article discusses pros and cons of conventional shipyard drydocking and the HLV approach.

Albaugh, E.K.

1985-07-01

9

Virginia Offshore Wind Cost Reduction Through Innovation Study (VOWCRIS) (Poster)  

SciTech Connect

The VOWCRIS project is an integrated systems approach to the feasibility-level design, performance, and cost-of-energy estimate for a notional 600-megawatt offshore wind project using site characteristics that apply to the Wind Energy Areas of Virginia, Maryland and North Carolina.

Maples, B.; Campbell, J.; Arora, D.

2014-10-01

10

Applying Activity Based Costing (ABC) Method to Calculate Cost Price in Hospital and Remedy Services  

PubMed Central

Background Activity Based Costing (ABC) is one of the new methods began appearing as a costing methodology in the 1990’s. It calculates cost price by determining the usage of resources. In this study, ABC method was used for calculating cost price of remedial services in hospitals. Methods: To apply ABC method, Shahid Faghihi Hospital was selected. First, hospital units were divided into three main departments: administrative, diagnostic, and hospitalized. Second, activity centers were defined by the activity analysis method. Third, costs of administrative activity centers were allocated into diagnostic and operational departments based on the cost driver. Finally, with regard to the usage of cost objectives from services of activity centers, the cost price of medical services was calculated. Results: The cost price from ABC method significantly differs from tariff method. In addition, high amount of indirect costs in the hospital indicates that capacities of resources are not used properly. Conclusion: Cost price of remedial services with tariff method is not properly calculated when compared with ABC method. ABC calculates cost price by applying suitable mechanisms but tariff method is based on the fixed price. In addition, ABC represents useful information about the amount and combination of cost price services. PMID:23113171

Rajabi, A; Dabiri, A

2012-01-01

11

Lower cost offshore field development utilizing autonomous vehicles  

SciTech Connect

The offshore oil and gas industry has the requirement to inspect offshore oil and gas pipelines for scour, corrosion and damage as well as inspect and intervene on satellite production facilities. This task is currently performed with Remotely Operated Vehicles (ROV) operated from dynamically positioned (DP) offshore supply or diving support boats. Currently, these tasks are expensive due to the high day rates for DP ships and the slow, umbilical impeded, 1 knot inspection rates of the tethered ROVs, Emerging Autonomous Undersea Vehicle (AUV) technologies offer opportunities to perform these same inspection tasks for 50--75% lower cost, with comparable or improved quality. The new generation LAPV (Linked Autonomous Power Vehicles) will operate from fixed facilities such as TLPs or FPFs and cover an operating field 10 kms in diameter.

Frisbie, F.R.; Vie, K.J.; Welch, D.W.

1996-12-31

12

COMPARED ACTIVITY-BASED COSTING CASE STUDIES IN THE INFORMATION SYSTEM DEPARTMENTS OF TWO  

E-print Network

1 COMPARED ACTIVITY-BASED COSTING CASE STUDIES IN THE INFORMATION SYSTEM DEPARTMENTS OF TWO GROUPS developments to the field reality with two case studies. Key words: Strategic Management Accounting, Activity-Based Costing, Case Study hal-00505590,version1-25Jul2010 Author manuscript, published in "International

Paris-Sud XI, Université de

13

Repairing an offshore jacket structure proves cost effective  

SciTech Connect

During inclement weather in the southern North Sea, an off-shore supply boat collided with a 25-year-old gas production platform. The impact occurred just over 2 m (5.56 ft) from the lowest annual tide and was sufficient to buckle, then shear, one end of a horizontal bracing from the jacket leg and to cause further damage at a node joint. Inspection personnel performed an initial examination of the damage to the eight-leg jacket structure using rope access techniques (abseiling), which offered substantial cost saving over erecting scaffolding. A structural analysis confirmed the jacket's integrity was not impaired and loss of the horizontal bracing would not significantly affect the structure. The analysis also confirmed repair of the node weld cracks and of the sheared area on the leg should be performed as soon as practical. In the end, the repair went smoothly. The repair area was above the waterline, and the weather cooperated perfectly. The repairs were done using rope access techniques, and using austenitic electrodes reduced the possibility of HAZ hydrogen cracking. Nondestructive examination confirmed no cracking had been experienced and no other defects existed. Indeed, this methodology is considered extremely practical, cost effective and ideal for use on offshore structures--with damage close to the waterline, and with the need to execute immediate repairs.

Still, J.R.; Blackwood, V.

2000-05-01

14

Offshore Wind Plant Balance-of-Station Cost Drivers and Sensitivities (Poster)  

SciTech Connect

With Balance of System (BOS) costs contributing up to 70% of the installed capital cost, it is fundamental to understanding the BOS costs for offshore wind projects as well as potential cost trends for larger offshore turbines. NREL developed a BOS model using project cost estimates developed by GL Garrad Hassan. Aspects of BOS covered include engineering and permitting, ports and staging, transportation and installation, vessels, foundations, and electrical. The data introduce new scaling relationships for each BOS component to estimate cost as a function of turbine parameters and size, project parameters and size, and soil type. Based on the new BOS model, an analysis to understand the non-turbine costs associated with offshore turbine sizes ranging from 3 MW to 6 MW and offshore wind plant sizes ranging from 100 MW to 1000 MW has been conducted. This analysis establishes a more robust baseline cost estimate, identifies the largest cost components of offshore wind project BOS, and explores the sensitivity of the levelized cost of energy to permutations in each BOS cost element. This presentation shows results from the model that illustrates the potential impact of turbine size and project size on the cost of energy from US offshore wind plants.

Saur, G.; Maples, B.; Meadows, B.; Hand, M.; Musial, W.; Elkington, C.; Clayton, J.

2012-09-01

15

DISEÑO E IMPLANTACIÓN DEL SISTEMA ACTIVITY BASED COSTING EN EL SECTOR HOTELERO: ESTUDIO DE UN CASO  

Microsoft Academic Search

Little existing Literature about the utility and the applications of the activity based costing or ABC in the tourism, especially in the hotel industry, has supposed an important motivation for the accomplishment of this work. For that reason we considered its real application using the case method that we describe in all its phases of implantation in this paper. The

M. Victoria Sánchez Rebull

16

Implementation of activity based costing in Malaysia : A case study of two companies  

Microsoft Academic Search

Purpose – The study aims to document and highlight the problems and benefits of implementing activity-based costing (ABC) in two companies in Malaysia. Design\\/methodology\\/approach – A case study methodology was used to describe the process of ABC implementation in a Malaysian based multinational company as well as a Malaysian multinational company. Findings – Although ABC is not widely adopted by

Jamaliah Abdul Majid; Maliah Sulaiman

2008-01-01

17

Developments: Activity-Based Costing in Universities—Five Years On  

Microsoft Academic Search

This article describes the current state of costing within the higher education sector, reviewing recent published literature and analysing the progress made by institutions in implementing activity-based costing (ABC). It draws on the findings of two cross-sectional surveys of all UK universities, undertaken in 1993 and 1998\\/99. The data collected suggests that while implementation of ABC systems has been slow,

Paul Cropper; Roger Cook

2000-01-01

18

A Study on the Product Profitability Model Based on Activity-Based Costing and Economic Value Added  

Microsoft Academic Search

Activity-based costing (ABC) can improve the accuracy comparing to traditional costing (TC), but it ignores the opportunity cost of the capital and loses the integrality of cost. Prior Product Profitability models based on either TC or ABC cannot consider the opportunity cost of assets and cannot provide the information of the idle cost of capacity unused. This paper constructs a

Junming YIN Zheng YANG; Zheng Yang

2008-01-01

19

ABC\\/ABM – activity-based costing and activity-based management : A profitability model for SMEs manufacturing clothing and textiles in the UK  

Microsoft Academic Search

Purpose – There is the potential to improve the competitive performance of small to medium-sized companies (SMEs) particularly in the UK clothing and textile industry, a sector of the economy that has had little exposure to activity-based costing and activity-based management (ABC\\/ABM). Design\\/methodology\\/approach – A review of the current literature relating to ABC\\/ABM was made, with reference to its poor

Andrew Hughes

2005-01-01

20

Building an activity-based costing hospital model using quality function deployment and benchmarking  

Microsoft Academic Search

Purpose – To use quality function deployment (QFD)\\/benchmarking for building an optimal activity-based costing (ABC) model using baseline information from five different Spanish hospitals. Design\\/methodology\\/approach – The customer satisfaction benchmarking process in QFD is discussed along with the benefits of hierarchical benchmarks in specifying areas of strategic competition and the logically ensuing product\\/service strategic decision-making requirements. A case study is

Marvin E. González; Gioconda Quesada; Rhonda Mack; Ignacio Urrutia

2005-01-01

21

Activity-Based Costing and Central Overhead Cost Allocation in Universities: A Case Study  

Microsoft Academic Search

This article examines the development of ABC in university accounting and assesses the contribution it might make to solving the problems associated with central overhead cost allocation systems. A case study using an ABC methodology was developed and applied to library services at the University of Southampton. The results showed substantial differences in the allocation of the central overhead costs

Andrew Goddard; Kean Ooi

1998-01-01

22

Activity based costing of diagnostic procedures at a nuclear medicine center of a tertiary care hospital  

PubMed Central

Context: Escalating health care expenses pose a new challenge to the health care environment of becoming more cost-effective. There is an urgent need for more accurate data on the costs of health care procedures. Demographic changes, changing morbidity profile, and the rising impact of noncommunicable diseases are emphasizing the role of nuclear medicine (NM) in the future health care environment. However, the impact of emerging disease load and stagnant resource availability needs to be balanced by a strategic drive towards optimal utilization of available healthcare resources. Aim: The aim was to ascertain the cost of diagnostic procedures conducted at the NM Department of a tertiary health care facility by employing activity based costing (ABC) method. Materials and Methods: A descriptive cross-sectional study was carried out over a period of 1 year. ABC methodology was utilized for ascertaining unit cost of different diagnostic procedures and such costs were compared with prevalent market rates for estimating cost effectiveness of the department being studied. Results: The cost per unit procedure for various procedures varied from Rs. 869 (USD 14.48) for a thyroid scan to Rs. 11230 (USD 187.16) for a meta-iodo-benzyl-guanidine (MIBG) scan, the most cost-effective investigations being the stress thallium, technetium-99 m myocardial perfusion imaging (MPI) and MIBG scan. The costs obtained from this study were observed to be competitive when compared to prevalent market rates. Conclusion: ABC methodology provides precise costing inputs and should be used for all future costing studies in NM Departments. PMID:25400363

Hada, Mahesh Singh; Chakravarty, Abhijit; Mukherjee, Partha

2014-01-01

23

Determination of chest x-ray cost using activity based costing approach at Penang General Hospital, Malaysia  

PubMed Central

Background Activity based costing (ABC) is an approach to get insight of true costs and to solve accounting problems. It provides more accurate information on product cost than conventional accounting system. The purpose of this study was to identify detailed resource consumption for chest x-ray procedure. Methods Human resource cost was calculated by multiplying the mean time spent by employees doing specific activity to their per-minute salaries. The costs of consumables and clinical equipments were obtained from the procurement section of the Radiology Department. The cost of the building was calculated by multiplying the area of space used by the chest X-ray facility with the unit cost of public building department. Moreover, straight-line deprecation with a discount rate of 3% was assumed for calculation of equivalent annual costs for building and machines. Cost of electricity was calculated by multiplying number of kilo watts used by electrical appliance in the year 2010 with electricity tariff for Malaysian commercial consumers (MYR 0.31 per kWh). Results Five activities were identified which were required to develop one chest X-ray film. Human resource, capital, consumable and electricity cost was MYR 1.48, MYR 1.98, MYR 2.15 and MYR 0.04, respectively. Total cost of single chest X-ray was MYR 5.65 (USD 1.75). Conclusion By applying ABC approach, we can have more detailed and precise estimate of cost for specific activity or service. Choice of repeating a chest X-ray can be based on our findings, when cost is a limiting factor. PMID:22891098

Atif, Muhammad; Sulaiman, Syed Azhar Syed; Shafie, Asrul Akmal; Saleem, Fahad; Ahmad, Nafees

2012-01-01

24

Time-Driven Activity-Based Costing for Inter-Library Services: A Case Study in a University  

ERIC Educational Resources Information Center

Although the true costs of inter-library loans (ILL) are unknown, universities increasingly rely on them to provide better library services at lower costs. Through a case study, we show how to perform a time-driven activity-based costing analysis of ILL and provide evidence of the benefits of such an analysis.

Pernot, Eli; Roodhooft, Filip; Van den Abbeele, Alexandra

2007-01-01

25

Installation, Operation, and Maintenance Strategies to Reduce the Cost of Offshore Wind Energy  

SciTech Connect

Currently, installation, operation, and maintenance (IO&M) costs contribute approximately 30% to the LCOE of offshore wind plants. To reduce LCOE while ensuring safety, this paper identifies principal cost drivers associated with IO&M and quantifies their impacts on LCOE. The paper identifies technology improvement opportunities and provides a basis for evaluating innovative engineering and scientific concepts developed subsequently to the study. Through the completion of a case study, an optimum IO&M strategy for a hypothetical offshore wind project is identified.

Maples, B.; Saur, G.; Hand, M.; van de Pieterman, R.; Obdam, T.

2013-07-01

26

A Framework for Assessing Cost Management System Changes: The Case of Activity-Based Costing Implementation at General Motors, 1986-1993  

E-print Network

An opportunity to study the technical and organizational impact of management accounting system changes has emerged with companies' adoption of activity-based costing (ABC). This paper provides a structured account of ...

Anderson, Shannon W.

2002-09-10

27

Critical analysis of the Hanford spent nuclear fuel project activity based cost estimate  

SciTech Connect

In 1997, the SNFP developed a baseline change request (BCR) and submitted it to DOE-RL for approval. The schedule was formally evaluated to have a 19% probability of success [Williams, 1998]. In December 1997, DOE-RL Manager John Wagoner approved the BCR contingent upon a subsequent independent review of the new baseline. The SNFP took several actions during the first quarter of 1998 to prepare for the independent review. The project developed the Estimating Requirements and Implementation Guide [DESH, 1998] and trained cost account managers (CAMS) and other personnel involved in the estimating process in activity-based cost (ABC) estimating techniques. The SNFP then applied ABC estimating techniques to develop the basis for the December Baseline (DB) and documented that basis in Basis of Estimate (BOE) books. These BOEs were provided to DOE in April 1998. DOE commissioned Professional Analysis, Inc. (PAI) to perform a critical analysis (CA) of the DB. PAI`s review formally began on April 13. PAI performed the CA, provided three sets of findings to the SNFP contractor, and initiated reconciliation meetings. During the course of PAI`s review, DOE directed the SNFP to develop a new baseline with a higher probability of success. The contractor transmitted the new baseline, which is referred to as the High Probability Baseline (HPB), to DOE on April 15, 1998 [Williams, 1998]. The HPB was estimated to approach a 90% confidence level on the start of fuel movement [Williams, 1998]. This high probability resulted in an increased cost and a schedule extension. To implement the new baseline, the contractor initiated 26 BCRs with supporting BOES. PAI`s scope was revised on April 28 to add reviewing the HPB and the associated BCRs and BOES.

Warren, R.N.

1998-09-29

28

Changing vessel routes could significantly reduce the cost of future offshore wind projects.  

PubMed

With the recent emphasis on offshore wind energy Coastal and Marine Spatial Planning (CMSP) has become one of the main frameworks used to plan and manage the increasingly complex web of ocean and coastal uses. As wind development becomes more prevalent, existing users of the ocean space, such as commercial shippers, will be compelled to share their historically open-access waters with these projects. Here, we demonstrate the utility of using cost-effectiveness analysis (CEA) to support siting decisions within a CMSP framework. In this study, we assume that large-scale offshore wind development will take place in the US Mid-Atlantic within the next decades. We then evaluate whether building projects nearshore or far from shore would be more cost-effective. Building projects nearshore is assumed to require rerouting of the commercial vessel traffic traveling between the US Mid-Atlantic ports by an average of 18.5 km per trip. We focus on less than 1500 transits by large deep-draft vessels. We estimate that over 29 years of the study, commercial shippers would incur an additional $0.2 billion (in 2012$) in direct and indirect costs. Building wind projects closer to shore where vessels used to transit would generate approximately $13.4 billion (in 2012$) in savings. Considering the large cost savings, modifying areas where vessels transit needs to be included in the portfolio of policies used to support the growth of the offshore wind industry in the US. PMID:24794388

Samoteskul, Kateryna; Firestone, Jeremy; Corbett, James; Callahan, John

2014-08-01

29

The Effects of the Use of Activity-Based Costing Software in the Learning Process: An Empirical Analysis  

Microsoft Academic Search

This study investigates the influence of the use of accounting software in teaching activity-based costing (ABC) on the learning process. It draws upon the Theory of Planned Behaviour and uses the end-user computer satisfaction (EUCS) framework to examine students' satisfaction with the ABC software. The study examines students' satisfaction with the software and the mediating role it plays between assignment

Andrea Tan; Aldónio Ferreira

2012-01-01

30

The Effects of the Use of Activity-Based Costing Software in the Learning Process: An Empirical Analysis  

Microsoft Academic Search

This study investigates the influence of the use of accounting software in teaching activity-based costing (ABC) on the learning process. It draws upon the Theory of Planned Behaviour and uses the end-user computer satisfaction (EUCS) framework to examine students' satisfaction with the ABC software. The study examines students' satisfaction with the software and the mediating role it plays between assignment

Andrea Tan; Aldónio Ferreira

2011-01-01

31

The fragmented communication structure within the accounting academia: the case of activity-based costing research genres  

Microsoft Academic Search

The major purpose of this study is to examine the communication structures within the management accounting academia, with a view to illustrating and thereby possibly alleviating the difficulties of dialogue between the different discussion circles identifiable within the field. Research on activity-based costing (ABC) is used as an illustrating example case. We distinguish three genres of ABC research (Consulting research,

Kari Lukka; Markus Granlund

2002-01-01

32

Customer profitability analysis with time-driven activity-based costing: a case study in a hotel  

Microsoft Academic Search

Purpose – The purpose of this paper is to show the implementation of customer profitability analysis (CPA) using time-driven activity-based costing (TDABC), in a Turkish hotel. Design\\/methodology\\/approach – A case study was conducted in a four-star hotel with 100-room capacity in the Çukurova region of Turkey. Interviews, direct observations, and documentation collection were used to collect the data. Findings –

Ilhan Dalci; Veyis Tanis; Levent Kosan

2010-01-01

33

Development of Activity-based Cost Functions for Cellulase, Invertase, and Other Enzymes  

NASA Astrophysics Data System (ADS)

As enzyme chemistry plays an increasingly important role in the chemical industry, cost analysis of these enzymes becomes a necessity. In this paper, we examine the aspects that affect the cost of enzymes based upon enzyme activity. The basis for this study stems from a previously developed objective function that quantifies the tradeoffs in enzyme purification via the foam fractionation process (Cherry et al., Braz J Chem Eng 17:233-238, 2000). A generalized cost function is developed from our results that could be used to aid in both industrial and lab scale chemical processing. The generalized cost function shows several nonobvious results that could lead to significant savings. Additionally, the parameters involved in the operation and scaling up of enzyme processing could be optimized to minimize costs. We show that there are typically three regimes in the enzyme cost analysis function: the low activity prelinear region, the moderate activity linear region, and high activity power-law region. The overall form of the cost analysis function appears to robustly fit the power law form.

Stowers, Chris C.; Ferguson, Elizabeth M.; Tanner, Robert D.

34

Review of the cost-effectiveness of EPA`s offshore oil and gas effluent guidelines  

SciTech Connect

The United States Environmental Protection Agency (EPA) published proposed Effluent Limitation Guidelines and New Source Performance Standards for the Offshore Subcategory of the Oil and Gas Extraction Point Source Category on March 13, 1991 (56 FR 10664). These guidelines include limitations for Best Practicable Technology (BPT), Best Conventional Technology (BPT), Best Available Technology (BAT), and New Source Performance Standards (NSPS) for produced water, drilling fluids, drill cuttings, well treatment fluids, deck drainage, produced sand, and sanitary and domestic waste. As a support document to these regulations, EPA published a Cost-Effectiveness (CE) Analysis (EPA, 1991). This report calculated the CE of several different BAT and NSPS treatment options for produced water and drilling fluids and drill cuttings. Separate calculations were made for restricted versus unrestricted drilling rights and for three different oil costs per barrel. Each treatment option has a different cost and will result in removal of different levels of pollutants. The report calculates the annualized cost for each option and the pound equivalents (PE) removed and expresses the CE as $/PE. While not officially required for decision-making, as long as the CE falls within some reasonable range, the selected treatment option is considered acceptable. This paper examines the premises and assumptions used in the CE analysis and recalculates the CE statistic using alternate assumptions.

Veil, J.A.

1991-12-31

35

Review of the cost-effectiveness of EPA's offshore oil and gas effluent guidelines  

SciTech Connect

The United States Environmental Protection Agency (EPA) published proposed Effluent Limitation Guidelines and New Source Performance Standards for the Offshore Subcategory of the Oil and Gas Extraction Point Source Category on March 13, 1991 (56 FR 10664). These guidelines include limitations for Best Practicable Technology (BPT), Best Conventional Technology (BPT), Best Available Technology (BAT), and New Source Performance Standards (NSPS) for produced water, drilling fluids, drill cuttings, well treatment fluids, deck drainage, produced sand, and sanitary and domestic waste. As a support document to these regulations, EPA published a Cost-Effectiveness (CE) Analysis (EPA, 1991). This report calculated the CE of several different BAT and NSPS treatment options for produced water and drilling fluids and drill cuttings. Separate calculations were made for restricted versus unrestricted drilling rights and for three different oil costs per barrel. Each treatment option has a different cost and will result in removal of different levels of pollutants. The report calculates the annualized cost for each option and the pound equivalents (PE) removed and expresses the CE as $/PE. While not officially required for decision-making, as long as the CE falls within some reasonable range, the selected treatment option is considered acceptable. This paper examines the premises and assumptions used in the CE analysis and recalculates the CE statistic using alternate assumptions.

Veil, J.A.

1991-01-01

36

Activity-based costing simulation as a tool for construction process optimization  

E-print Network

of Model 2-2. . . 124 75. Resource Node Summary ? Alternative 6 [4-7-3-1-1]. . . 76. Resource Node Summary ? Alternative 5 [3-6-2-1-1]. . . 125 126 77. 3rd Simulation Results of Model 2-2. 126 78. Resource Node Summary ? Alternative 14 [3... the Network Model using ABC-SIM (2) Apply the Optimization Model to a Process (t) Acquire Time&Cost Data (~) Test with the Validation Model (4) Select the Best Alternative(s) (S) F)G. 1. Optimization Procedure Flow Chart II. 2. 1...

Son, Junghye

1999-01-01

37

A modular and cost-effective superconducting generator design for offshore wind turbines  

NASA Astrophysics Data System (ADS)

Superconducting generators have the potential to reduce the tower head mass for large (?10 MW) offshore wind turbines. However, a high temperature superconductor generator should be as reliable as conventional generators for successful entry into the market. Most of the proposed designs use the superconducting synchronous generator concept, which has a higher cost than conventional generators and suffers from reliability issues. In this paper, a novel claw pole type of superconducting machine is presented. The design has a stationary superconducting field winding, which simplifies the design and increases the reliability. The machine can be operated in independent modules; thus even if one of the sections fails, the rest can operate until the next planned maintenance. Another advantage of the design is the very low superconducting wire requirement; a 10 MW, 10 rpm design is presented which uses 13 km of MgB2 wire at 30 K. The outer diameter of the machine is 6.63 m and it weighs 184 tonnes including the structural mass. The design is thought to be a good candidate for entering the renewable energy market, with its low cost and robust structure.

Keysan, Ozan; Mueller, Markus

2015-03-01

38

Economic impacts of oil spills: Spill unit costs for tankers, pipelines, refineries, and offshore facilities. [Task 1, Final report  

SciTech Connect

The impacts of oil spills -- ranging from the large, widely publicized Exxon Valdez tanker incident to smaller pipeline and refinery spills -- have been costly to both the oil industry and the public. For example, the estimated costs to Exxon of the Valdez tanker spill are on the order of $4 billion, including $2.8 billion (in 1993 dollars) for direct cleanup costs and $1.125 billion (in 1992 dollars) for settlement of damages claims caused by the spill. Application of contingent valuation costs and civil lawsuits pending in the State of Alaska could raise these costs appreciably. Even the costs of the much smaller 1991 oil spill at Texaco`s refinery near Anacortes, Washington led to costs of $8 to 9 million. As a result, inexpensive waming, response and remediation technologies could lower oil spin costs, helping both the oil industry, the associated marine industries, and the environment. One means for reducing the impact and costs of oil spills is to undertake research and development on key aspects of the oil spill prevention, warming, and response and remediation systems. To target these funds to their best use, it is important to have sound data on the nature and size of spills, their likely occurrence and their unit costs. This information could then allow scarce R&D dollars to be spent on areas and activities having the largest impact. This report is intended to provide the ``unit cost`` portion of this crucial information. The report examines the three key components of the US oil supply system, namely, tankers and barges; pipelines and refineries; and offshore production facilities. The specific purpose of the study was to establish the unit costs of oil spills. By manipulating this key information into a larger matrix that includes the size and frequency of occurrence of oil spills, it will be possible` to estimate the likely future impacts, costs, and sources of oil spills.

Not Available

1993-10-15

39

An activity-based cost analysis of the Honduras community-based, integrated child care (AIN-C) programme.  

PubMed

The Honduras AIN-C programme is a preventive health and nutrition programme of the Honduras Ministry of Health (MOH) that relies on volunteers to help mothers monitor and maintain the adequate growth of young children. A quasi-experimental, design-based evaluation found that the programme achieved near-universal coverage and was effective in improving mothers' child-rearing knowledge, attitudes and practices, including feeding and appropriate care-giving and care-seeking practices for children with diarrhoea and acute respiratory illness. The programme is widely regarded as a model. This study was undertaken to provide the first comprehensive estimates of the cost of the AIN-C programme, with the goal of providing a programme and financial planning tool for Honduras. An additional comparison of study findings was also undertaken to determine the cost of the AIN-C programme's community-based services relative to a similar facility-based service. Expressed in mid-2005 US dollars, the study found that after the programme is phased-in: (1) the annual, recurrent cost per child under 2 years participating in the programme is $6.43; (2) the annual, incremental budget requirements per child under 2 years participating in the programme are $3.90; (3) the cost of an AIN-C monthly growth monitoring and counselling session per child is 11% of the cost of a traditional MOH, facility-based growth and development consultation per child; and (4) the effect of mothers substituting AIN-C monitor care for MOH facility-based care 'saves' 203 000 outpatient visits a year, with a potential cost saving of $1.66 million, the equivalent of 60% of the recurrent cost of the programme and roughly equal to the annual incremental budget requirements of the programme. Sensitivity analysis of the cost estimates is performed to provide insight, for countries considering introducing a similar programme, into how modifications of key characteristics of the programme affect its costs. PMID:18755734

Fiedler, John L; Villalobos, Carlos A; De Mattos, Annette C

2008-11-01

40

Structural health and prognostics management for offshore wind turbines : case studies of rotor fault and blade damage with initial O&M cost modeling.  

SciTech Connect

Operations and maintenance costs for offshore wind plants are significantly higher than the current costs for land-based (onshore) wind plants. One way to reduce these costs would be to implement a structural health and prognostic management (SHPM) system as part of a condition based maintenance paradigm with smart load management and utilize a state-based cost model to assess the economics associated with use of the SHPM system. To facilitate the development of such a system a multi-scale modeling approach developed in prior work is used to identify how the underlying physics of the system are affected by the presence of damage and faults, and how these changes manifest themselves in the operational response of a full turbine. This methodology was used to investigate two case studies: (1) the effects of rotor imbalance due to pitch error (aerodynamic imbalance) and mass imbalance and (2) disbond of the shear web; both on a 5-MW offshore wind turbine in the present report. Based on simulations of damage in the turbine model, the operational measurements that demonstrated the highest sensitivity to the damage/faults were the blade tip accelerations and local pitching moments for both imbalance and shear web disbond. The initial cost model provided a great deal of insight into the estimated savings in operations and maintenance costs due to the implementation of an effective SHPM system. The integration of the health monitoring information and O&M cost versus damage/fault severity information provides the initial steps to identify processes to reduce operations and maintenance costs for an offshore wind farm while increasing turbine availability, revenue, and overall profit.

Myrent, Noah J. [Purdue Center for Systems Integrity, Lafayette, IN; Kusnick, Joshua F. [Purdue Center for Systems Integrity, Lafayette, IN; Barrett, Natalie C. [Purdue Center for Systems Integrity, Lafayette, IN; Adams, Douglas E. [Purdue Center for Systems Integrity, Lafayette, IN; Griffith, Daniel Todd

2013-04-01

41

Offshore Wind Research (Fact Sheet)  

SciTech Connect

This 2-page fact sheet describes NREL's offshore wind research and development efforts and capabilities. The National Renewable Energy Laboratory is internationally recognized for offshore wind energy research and development (R&D). Its experience and capabilities cover a wide spectrum of wind energy disciplines. NREL's offshore wind R&D efforts focus on critical areas that address the long-term needs of the offshore wind energy industry and the Department of Energy (DOE). R&D efforts include: (1) Developing offshore design tools and methods; (2) Collaborating with international partners; (3) Testing offshore systems and developing standards; (4) Conducting economic analyses; (5) Characterizing offshore wind resources; and (6) Identifying and mitigating offshore wind grid integration challenges and barriers. NREL has developed and maintains a robust, open-source, modular computer-aided engineering (CAE) tool, known as FAST. FAST's state-of-the-art capabilities provide full dynamic system simulation for a range of offshore wind systems. It models the coupled aerodynamic, hydrodynamic, control system, and structural response of offshore wind systems to support the development of innovative wind technologies that are reliable and cost effective. FAST also provides dynamic models of wind turbines on offshore fixed-bottom systems for shallow and transitional depths and floating-platform systems in deep water, thus enabling design innovation and risk reduction and facilitating higher performance designs that will meet DOE's cost of energy, reliability, and deployment objectives.

Not Available

2011-10-01

42

Offshore Wind Energy Market Overview (Presentation)  

SciTech Connect

This presentation describes the current international market conditions regarding offshore wind, including the breakdown of installation costs, how to reduce costs, and the physical siting considerations considered when planning offshore wind construction. The presentation offers several examples of international existing and planned offshore wind farm sites and compares existing international offshore resources with U.S. resources. The presentation covers future offshore wind trends and cites some challenges that the United States must overcome before it will be able to fully develop offshore wind sites.

Baring-Gould, I.

2013-07-01

43

Offshore Technology  

NSDL National Science Digital Library

Offshore Technology is a Web site specifically geared for the offshore oil and gas industry. The highlight of the site is the Industry Projects link, which gives information about offshore drilling projects from around the world. Sites are categorized geographically and include description of the project, information on the geology of the area, drilling history of the site, wellhead platform, pipeline information, and much more. Other links on the main page include an A to Z listing of contractors and suppliers, exhibition and conference information, and other helpful resources for the offshore drilling professional and researcher.

44

A new hybrid ocean thermal energy conversion–Offshore solar pond (OTEC–OSP) design: A cost optimization approach  

Microsoft Academic Search

Solar thermal electricity (STE) generation offers an excellent opportunity to supply electricity with a non-CO2 emitting technology. However, present costs hamper widespread deployment and therefore research and development efforts are concentrated on accelerated cost reductions and efficiency improvements. Many focus on the latter, but in this paper we rather focus on attaining very low levelised electricity costs (LEC) by designing

Paul J. T. Straatman; Wilfried G. J. H. M. van Sark

2008-01-01

45

Cathodic protection of offshore pipelines  

Microsoft Academic Search

The cost of cathodic protection for minimizing corrosion in offshore natural gas transmission pipelines is insignificant compared with the overall pipeline cost. The cathodic system sometimes remains a last-minute design and procurement item, installed with little supervision and rarely checked until the pipeline has been in service for several years. Typical offshore cathodic-protection-system design parameters are (1) sacrificial zinc anodes

1981-01-01

46

Offshore medicine.  

PubMed

Offshore life can be refreshing for medics who are looking for a little change of pace; however, it is not for everyone. Working offshore can be the easiest or most boring job you'll ever have. It takes a specific type of medic to fit this mold. So, if you are considering a career in the offshore field, take all of the above into consideration. You are not just making a change in jobs, but a change in lifestyle. Once you become accustomed to this lifestyle, it will be hard to go back to the everyday hustle and bustle of the streets. For more information about working offshore, contact Acadian Contract Services at 800/259-333, or visit www.acadian.com. PMID:11258303

Baker, D

2001-03-01

47

Towers for Offshore Wind Turbines  

NASA Astrophysics Data System (ADS)

Increasing energy demand coupled with pollution free production of energy has found a viable solution in wind energy. Land based windmills have been utilized for power generation for more than two thousand years. In modern times wind generated power has become popular in many countries. Offshore wind turbines are being used in a number of countries to tap the energy from wind over the oceans and convert to electric energy. The advantages of offshore wind turbines as compared to land are that offshore winds flow at higher speed than onshore winds and the more available space. In some land based settings, for better efficiency, turbines are separated as much as 10 rotor diameters from each other. In offshore applications where only two wind directions are likely to predominate, the distances between the turbines arranged in a line can be shortened to as little as two or four rotor diameters. Today, more than a dozen offshore European wind facilities with turbine ratings of 450 kw to 3.6 MW exist offshore in very shallow waters of 5 to 12 m. Compared to onshore wind turbines, offshore wind turbines are bigger and the tower height in offshore are in the range of 60 to 80 m. The water depths in oceans where offshore turbines can be located are within 30 m. However as the distance from land increases, the costs of building and maintaining the turbines and transmitting the power back to shore also increase sharply. The objective of this paper is to review the parameters of design for the maximum efficiency of offshore wind turbines and to develop types offshore towers to support the wind turbines. The methodology of design of offshore towers to support the wind turbine would be given and the environmental loads for the design of the towers would be calculated for specific cases. The marine corrosion on the towers and the methods to control the corrosion also would be briefly presented. As the wind speeds tend to increase with distance from the shore, turbines build father offshore will be able to capture more wind energy. Currently two types of towers are considered. Cylindrical tubular structures and truss type structures. But truss type structures have less weight and flexibility in design. The construction of the offshore towers to harness the wind energy is also presented. The results will include the calculation of wind and wave forces on the tower and the design details for the tower.

Kurian, V. J.; Narayanan, S. P.; Ganapathy, C.

2010-06-01

48

National Offshore Wind Energy Grid Interconnection Study  

SciTech Connect

The National Offshore Wind Energy Grid Interconnection Study (NOWEGIS) considers the availability and potential impacts of interconnecting large amounts of offshore wind energy into the transmission system of the lower 48 contiguous United States. A total of 54GW of offshore wind was assumed to be the target for the analyses conducted. A variety of issues are considered including: the anticipated staging of offshore wind; the offshore wind resource availability; offshore wind energy power production profiles; offshore wind variability; present and potential technologies for collection and delivery of offshore wind energy to the onshore grid; potential impacts to existing utility systems most likely to receive large amounts of offshore wind; and regulatory influences on offshore wind development. The technologies considered the reliability of various high-voltage ac (HVAC) and high-voltage dc (HVDC) technology options and configurations. The utility system impacts of GW-scale integration of offshore wind are considered from an operational steady-state perspective and from a regional and national production cost perspective.

Daniel, John P. [ABB Inc; Liu, Shu [ABB Inc; Ibanez, Eduardo [National Renewable Energy Laboratory; Pennock, Ken [AWS Truepower; Reed, Greg [University of Pittsburgh; Hanes, Spencer [Duke Energy

2014-07-30

49

Offshore wind farm layout optimization  

NASA Astrophysics Data System (ADS)

Offshore wind energy technology is maturing in Europe and is poised to make a significant contribution to the U.S. energy production portfolio. Building on the knowledge the wind industry has gained to date, this dissertation investigates the influences of different site conditions on offshore wind farm micrositing---the layout of individual turbines within the boundaries of a wind farm. For offshore wind farms, these conditions include, among others, the wind and wave climates, water depths, and soil conditions at the site. An analysis tool has been developed that is capable of estimating the cost of energy (COE) from offshore wind farms. For this analysis, the COE has been divided into several modeled components: major costs (e.g. turbines, electrical interconnection, maintenance, etc.), energy production, and energy losses. By treating these component models as functions of site-dependent parameters, the analysis tool can investigate the influence of these parameters on the COE. Some parameters result in simultaneous increases of both energy and cost. In these cases, the analysis tool was used to determine the value of the parameter that yielded the lowest COE and, thus, the best balance of cost and energy. The models have been validated and generally compare favorably with existing offshore wind farm data. The analysis technique was then paired with optimization algorithms to form a tool with which to design offshore wind farm layouts for which the COE was minimized. Greedy heuristic and genetic optimization algorithms have been tuned and implemented. The use of these two algorithms in series has been shown to produce the best, most consistent solutions. The influences of site conditions on the COE have been studied further by applying the analysis and optimization tools to the initial design of a small offshore wind farm near the town of Hull, Massachusetts. The results of an initial full-site analysis and optimization were used to constrain the boundaries of the farm. A more thorough optimization highlighted the features of the area that would result in a minimized COE. The results showed reasonable layout designs and COE estimates that are consistent with existing offshore wind farms.

Elkinton, Christopher Neil

50

New perspectives in offshore wind energy.  

PubMed

The design of offshore wind turbines is one of the most fascinating challenges in renewable energy. Meeting the objective of increasing power production with reduced installation and maintenance costs requires a multi-disciplinary approach, bringing together expertise in different fields of engineering. The purpose of this theme issue is to offer a broad perspective on some crucial aspects of offshore wind turbines design, discussing the state of the art and presenting recent theoretical and experimental studies. PMID:25583869

Failla, Giuseppe; Arena, Felice

2015-02-28

51

New perspectives in offshore wind energy  

PubMed Central

The design of offshore wind turbines is one of the most fascinating challenges in renewable energy. Meeting the objective of increasing power production with reduced installation and maintenance costs requires a multi-disciplinary approach, bringing together expertise in different fields of engineering. The purpose of this theme issue is to offer a broad perspective on some crucial aspects of offshore wind turbines design, discussing the state of the art and presenting recent theoretical and experimental studies. PMID:25583869

Failla, Giuseppe; Arena, Felice

2015-01-01

52

Solar power satellite offshore rectenna study  

NASA Technical Reports Server (NTRS)

Offshore rectennas are feasible and cost competitive with land rectennas but the type of rectenna suitable for offshore use is quite different from that specified in the present reference system. A nonground plane design minimizes the weight and greatly reduces the number of costly support towers. This perferred design is an antenna array consisting of individually encapsulated dipoles with reflectors or tagis supported on feed wires. Such a 5 GW rectenna could be built at a 50 m water depth site to withstand hurricane, winter storm, and icing conditions for a one time cost of $5.7 billion. Subsequent units would be about 1.3 less expensive. More benign and more shallow water sites would result in substantially lower costs. The major advantage of an offshore rectenna is the removal of microwave radiation from populated areas.

1980-01-01

53

Offshore oil in the Alaskan Arctic  

NASA Technical Reports Server (NTRS)

Oil and gas deposits in the Alaskan Arctic are estimated to contain up to 40 percent of the remaining undiscovered crude oil and oil-equivalent natural gas within U.S. jurisdiction. Most (65 to 70 percent) of these estimated reserves are believed to occuur offshore beneath the shallow, ice-covered seas of the Alaskan continental shelf. Offshore recovery operations for such areas are far from routine, with the primary problems associated with the presence of ice. Some problems that must be resolved if efficient, cost-effective, environmentally safe, year-round offshore production is to be achieved include the accurate estimation of ice forces on offshore structures, the proper placement of pipelines beneath ice-produced gouges in the sea floor, and the cleanup of oil spills in pack ice areas.

Weeks, W. F.; Weller, G.

1984-01-01

54

Offshoring technology innovation: A case study of rare-earth technology  

Microsoft Academic Search

Many US firms are improving their individual competitiveness by offshoring manufacturing operations, services and, increasingly, knowledge work. Although research to date has maintained that these practices are beneficial to the offshoring firm and national economies, by reducing costs and expanding markets, little is known about the longer term effect of offshoring on the rate of innovation of home economies. This

Brian J. Fifarek; Francisco M. Veloso; Cliff I. Davidson

2008-01-01

55

Curbing rework in offshore projects: systemic classification of risks with dialogue and narratives  

Microsoft Academic Search

Rework arises in offshore projects due to errors and omissions, and this can significantly contribute to project cost and cause schedule overruns. Indeed, these additional and unnecessary costs can uncontrollably spiral to account for 25% of capital expenditure for offshore platform projects. Yet rework costs are frequently dismissed as isolated and rare instances of unfortunate circumstances and alien to normal

Peter E. D. Love; David J. Edwards

2012-01-01

56

Solar power satellite offshore rectenna study  

NASA Technical Reports Server (NTRS)

It was found that an offshore rectenna is feasible and cost competitive with land rectennas but that the type of rectenna which is suitable for offshore use is quite different from that specified in the present reference system. The result is a nonground plane design which minimizes the weight and greatly reduces the number of costly support towers. This preferred design is an antenna array consisting of individually encapsulated dipoles with reflectors supported on feed wires. Such a 5 GW rectenna could be built at a 50 m water depth site to withstand hurricane and icing conditions for a one time cost of 5.7 billion dollars. Subsequent units would be about 1/3 less expensive. The east coast site chosen for this study represents an extreme case of severe environmental conditions. More benign and more shallow water sites would result in lower costs. Secondary uses such as mariculture appear practical with only minor impact on the rectenna design. The potential advantages of an offshore rectenna, such as no land requirements, removal of microwave radiation from populated areas and minimal impact on the local geopolitics argue strongly that further investigation of the offshore rectenna should be vigorously pursued.

1980-01-01

57

Human Rights, Academic Freedom, and Offshore Academics  

ERIC Educational Resources Information Center

Despite the carnage wrought on higher education by the Great Recession, evidence persists that the sector is still host to a speculator psychology. One example is the unabated stampede to set up branches and programs overseas. Colleges have many reasons to go offshore: (1) to reduce costs; (2) to build their "brands" in "emerging markets"; and (3)…

Ross, Andrew

2011-01-01

58

Offshore oil: an overview  

SciTech Connect

This report provides an assessment of the current status of offshore activity with particular reference to (1) trends in offshore production, and (2) the intensity and location of exploration drilling, this being an essential precondition for any future increase in offshore crude production. The report includes in-depth profiles of those non-OPEC nationa where the chances of discovering further recoverable offshore reserves appear highest. The underlying concern is to identify those nations that are on the offshore frontier. It is these nations that must resolve in an appropriate and timely manner the particular policy issues that arise in the course of offshore oil exploration and production. These issues include (1) the development of appropriate, risk-free offshore technologies, and (2) balancing of conflicting and competing demands for land (recreational use, wetland preservation, siting of infrastructure and energy-related facilities) in the coastal zone. In these respects, the exploitation of offshore oil and gas poses a unique form of challenge.

Manners, I.R.

1980-06-01

59

Problems unique to offshore measurement  

SciTech Connect

Most of us have arrived at this meeting in some kind of company provided transportation. This is supplied in order for us to do our assigned jobs. These may be trucks, or cars, or even helicopters, and maybe boats. All who are involved in the offshore industry know that transportation is the cost costly of all. The helicopter bill for our company is a bill which costs us somewhere in the 9 million dollar range. Since this costs us so much, we are constantly looking at ways to reduce this. The helicopters we use cost us $510.00 a flying hour plus $28,000.00 a month for lease. These helicopters fly in the neighborhood of 140 miles per hour. You can quickly see how fast the cost can climb. We have two technicians, along with a pilot, and approx. 400 lbs of test gear and spare parts. You have to carry all you think you will need for the day`s activities because it`s a long and costly trip to go pick up some gasket material or an orifice plate.

Young, J.G. [ANR Pipeline Co., Lafayette, LA (United States)

1995-12-01

60

Activity-based analyses lead to better decision making.  

PubMed

Activity-based costing (ABC) and activity-based management (ABM) are cost-management tools that are relatively new to the healthcare industry. ABC is used for strategic decision making. It assesses the costs associated with specific activities and resources and links those costs to specific internal and external customers of the healthcare enterprise (e.g., patients, service lines, and physician groups) to determine the costs associated with each customer. This cost information then can be adjusted to account for anticipated changes and to predict future costs. ABM, on the other hand, supports operations by focusing on the causes of costs and how costs can be reduced. It assesses cost drivers that directly affect the cost of a product or service, and uses performance measures to evaluate the financial or nonfinancial benefit an activity provides. By identifying each cost driver and assessing the value the element adds to the healthcare enterprise, ABM provides a basis for selecting areas that can be changed to reduce costs. PMID:10182280

Player, S

1998-08-01

61

Session: Offshore wind  

SciTech Connect

This session at the Wind Energy and Birds/Bats workshop consisted of two presentations. Due to time constraints, a discussion period was not possible. The session addressed the current state of offshore wind energy development. The first presentation ''Monitoring Program and Results: Horns Rev and Nysted'' by Jette Gaarde summarized selected environmental studies conducted to date at operating offshore wind turbine projects in Denmark and lessons from other offshore wind developments in Europe. Wildlife impacts studies from the Danish sites focused on birds, fish, and mammals. The second presentation ''What has the U.S. Wind Industry Learned from the European Example'' by Bonnie Ram provided an update on current permit applications for offshore wind developments in the U.S. as well as lessons that may be drawn from the European experience.

Gaarde, Jette; Ram, Bonnie

2004-09-01

62

27. Annual Offshore Technology Conference: 1995 Proceedings. Volume 3: Construction and installation/field drilling and development systems  

SciTech Connect

This conference proceedings contains papers dealing with offshore platform construction and design; offshore pipeline installation and design; offshore drilling equipment and design; underwater remote control inspection and materials handling equipment; and downhole surveys and coiled tubing applications. It also contains papers dealing with the Cost Reduction Initiative for the New Era (CRINE) and other economic developments in the oil and gas industry.

NONE

1995-12-31

63

Energy from Offshore Wind: Preprint  

SciTech Connect

This paper provides an overview of the nascent offshore wind energy industry including a status of the commercial offshore industry and the technologies that will be needed for full market development.

Musial, W.; Butterfield, S.; Ram, B.

2006-02-01

64

Offshore wind farm layout optimization  

Microsoft Academic Search

Offshore wind energy technology is maturing in Europe and is poised to make a significant contribution to the U.S. energy production portfolio. Building on the knowledge the wind industry has gained to date, this dissertation investigates the influences of different site conditions on offshore wind farm micrositing---the layout of individual turbines within the boundaries of a wind farm. For offshore

Christopher Neil Elkinton

2007-01-01

65

Immigration, Offshoring and American Jobs  

Microsoft Academic Search

How do offshoring and immigration affect the employment of native workers? What kinds of jobs suffer, or benefit, most from the competition created by offshore and immigrant workers? In contrast to the existing literature that has mostly looked at the effects of offshoring and immigration separately, we argue that one can gain useful insights by jointly investigating the interactions among

Gianmarco I. P. Ottaviano; Giovanni Peri; Greg C. Wright

2012-01-01

66

Offshore Renewable Energy Solutions  

E-print Network

, and advances in wave forecasting will support the next generation of deep-water floating devices. Enablers We helping you to deliver offshore #12;Eco-innovation Our input into new designs for floating and deep structures. We can advise on the use of novel foundat

67

Combination offshore drilling rig  

Microsoft Academic Search

An offshore drilling rig is described for use in drilling into a formation below a body of water comprising a barge hull having a drilling slot extending inwardly from the peripheral boundary of the barge hull, means for supporting the barge hull in a position above the water, a cantilever structure mounted on the barge hull and movable horizontally with

D. B. Lorenz; J. S. II Laid

1986-01-01

68

Reinforced concrete offshore platform  

Microsoft Academic Search

A reinforced concrete offshore platform is described comprising a honeycomb foundation (A), a supporting structure (B) and an above-surface section (C) carrying appropriate equipment. The honeycomb foundation (A) and the supporting structure (B) are made of prefabricated reinforced concrete elements which are polyhedral hollow prisms arranged with gaps between the external sides thereof and joined by a system of prestressed

J. P. Martyshenko; S. J. Martyshenko; J. S. Kotelnikov; E. G. Kutukhtin; M. S. Petrosian; N. I. Ilyasova; J. S. Volkov; A. M. Vardanian

1987-01-01

69

Offshore pollution prevention  

Microsoft Academic Search

A complete system for removing oil from produced water and deck drain fluids in an offshore facility includes a surge settler which receives the produced water from a three-phase separator. In the surge settler, the produced water flows crosswise through a corrugated plate assembly to separate free oil and solids from the produced water. A portion of the produced water

Favret; U. B. Jr

1984-01-01

70

Review of Methodologies for Offshore Wind Resource Assessment in European Seas  

Microsoft Academic Search

The wind resource offshore is generally larger than at geographically nearby onshore sites, which can offset the higher installation,\\u000a operation and maintenance costs associated with offshore wind parks. Successful offshore wind energy development relies to\\u000a some extent on accurate prediction of wind resources, but since installing and operating a meteorological mast in situ is expensive, prospective sites must be carefully evaluated.

A. M. Sempreviva; R. J. Barthelmie; S. C. Pryor

2008-01-01

71

Electrokinetic improvement of offshore foundations  

NASA Astrophysics Data System (ADS)

Offshore and near-shore structures for energy exploration and production, harbour work and other facilities are often situated on very soft marine clay deposits that have shear strengths of a few kilopascals. The design of foundations embedded in these soft deposits often poses a challenge for geotechnical engineers, i.e., to satisfy the bearing capacity requirement, while at the same time minimizing the embedment depth and dimensions of the foundation due to cost considerations. The present study investigates the possibility of using electrokinetics to strengthen the soil adjacent to skirted foundations embedded in soft marine deposits and, thus, to improve the load carrying capacity of the foundations. The innovative feature of this approach as compared to soil improvement methods commonly adopted in practice is that the focus of strengthening is on the interface between the soil and embedded foundation, in terms of enhancement of adhesion and cementation. The thesis presents a summary of the method and results of a series of electrokinetic tests conducted on natural and simulated marine clays in small-scale and large-scale laboratory testing facilities. Steel plates and steel cylinders are used to simulate skirted foundations. A low dc voltage is applied via steel electrodes installed around the foundation models. The effects of electrokinetics are evaluated through changes in the geotechnical properties of the soil and load carrying capacities of the foundation model after treatment. The results demonstrate that the load carrying capacity of the skirted foundation model and the undrained shear strength of the adjacent soil increase by a factor of three after electrokinetic treatment. The clay adheres strongly to the inside and outside walls of the foundation model, indicating bonding occurs between the soil and steel after treatment. The treatment increases the soil undrained modulus and also induces a preconsolidation pressure of the remoulded clay, thereby reducing potential settlement of the foundation. The new technology described in this thesis has potential application in offshore engineering for increasing the load carrying capacity of skirted foundations installed in soft clayey sediments, as well as for rehabilitation of existing offshore structures.

Micic, Silvana

72

Drilling tools for continuous offshore operations  

SciTech Connect

Offshore drilling tools are still the object of improvement aimed in achieving maximum production or scientific effect of minimum costs. One of perspective ways of improving offshore scientific drilling indices is utilization of drilling systems which provide continuous hole penetration without pulling out the drill string aboard of drill vessel for bit replacement. The report presents specific features of the drilling tools supplying Complete Coring System (CCS) operations. CCS can provide continuous coring and drilling as well as logging in any geological profiles from the soft to very hard formations. One of the basic principles in coring is slimhole pilot drilling, thus giving many advantages. Development of drilling tools for CCS is based upon vast experience in designing drilling tools, including the retractable bits. In perspective CCS can be applied in stratigraphic and scientific drilling in deep water, especially in complicated geological conditions.

Gelfgat, M.Y. [Aquatic Company, Ltd., Moscow (Russian Federation); Surkov, D.V.; Buyanovsky, I.N. [All-Russia Scientific Research Inst. of Drilling Techniques, Moscow (Russian Federation)

1995-12-31

73

Organizational Learning and Organizational Capabilities of Firms that Engage in Onshore and Offshore Business Process Outsourcing  

Microsoft Academic Search

Firms are increasingly using onshore and offshore business process outsourcing (BPO) to manage their front and back office functions. While most IS research uses transaction cost economics (TCE) to study the transaction-level characteristics that facilitate outsourcing, to advance theory there is a need to focus on the firm-level characteristics that facilitate onshore and offshore BPO. This paper builds on prior

Jonathan Whitaker; Sunil Mithas; Mayuram S. Krishnan

2010-01-01

74

Taking Information Systems Business Process Outsourcing Offshore: The Conflict of Competition and Risk  

Microsoft Academic Search

As Business Process Outsourcing (BPO) moves offshore and now includes Information Systems (IS) Processes, there is a need to consider a combination of the two. This article explores the factors that a multinational organisation considered when it “offshored†its IS business processes to lower-cost destinations. It focuses on determining the driving factors and challenges faced during the offshore sourcing project.

Georgia Beverakis; Geoffrey N. Dick; Dubravka Cecez-Kecmanovic

2009-01-01

75

MicroDOT: Design of a 10W prototype of the Delft offshore turbine  

Microsoft Academic Search

The Delft Offshore Turbine (DOT) project is a research project within DUWIND. The main objective of the project is to reduce the costs of offshore wind energy through technical solutions. A defining characteristic of the DOT concept is the fluid power transmission. The next step for the DOT concept is to make a full preliminary design. A helpful tool to

A. S. Kempenaar; N. F. B. Diepeveen; A. Jarquin Laguna

2011-01-01

76

SMALL AND MIDDLE-SIZED ENTERPRISES' OFFSHORING PRODUCTION: A STUDY OF FIRM DECISIONS AND CONSEQUENCES  

Microsoft Academic Search

The current massive offshoring of manufacturing represents a significant relocation of employment. Therefore it constitutes an interesting phenomenon from the perspectives of economic geography, geopolitical policy and international small business management. In this qualitative study, we investigate the offshoring decisions in 10 Norwegian small and middle-sized enterprises (SMEs) that have established manufacturing capabilities in low cost countries. The focus lies

ARILD ASPELUND; VITALI BUTSKO

2010-01-01

77

America's Offshore Refugee Camps  

Microsoft Academic Search

America's offshore refugee camps rank. among the most startling, yet invisible, features of United States foreign policy in the post-Cold War era. Since 1991, our Government has almost continuously maintained tent cities holding thousands of men, women, and children, surrounded by rolls of razor-barbed wire, amid the sweltering heat of the U.S. Naval Base at Guantanamo Bay, Cuba, and the

Harold Hongju Koh

1994-01-01

78

2010 Cost of Wind Energy Review  

SciTech Connect

This document provides a detailed description of NREL's levelized cost of wind energy equation, assumptions and results in 2010, including historical cost trends and future projections for land-based and offshore utility-scale wind.

Tegen, S.; Hand, M.; Maples, B.; Lantz, E.; Schwabe, P.; Smith, A.

2012-04-01

79

New Modeling Tool Analyzes Floating Platform Concepts for Offshore Wind Turbines (Fact Sheet)  

SciTech Connect

Researchers at the National Renewable Energy Laboratory (NREL) developed a new complex modeling and analysis tool capable of analyzing floating platform concepts for offshore wind turbines. The new modeling tool combines the computational methodologies used to analyze land-based wind turbines with the comprehensive hydrodynamic computer programs developed for offshore oil and gas industries. This new coupled dynamic simulation tool will enable the development of cost-effective offshore technologies capable of harvesting the rich offshore wind resources at water depths that cannot be reached using the current technology.

Not Available

2011-02-01

80

Customer profitability analysis: : an activity-based costing approach  

Microsoft Academic Search

Recent innovations in management accounting have emphasized a customer focus and the requirement of remaining competitive through satisfying customer needs. In so doing they have largely overlooked the dual requirement that customers should satisfy the strategic needs of the supplier. Examines customer profitability analysis (CPA) as a tool for the evaluation of the portfolio of customer profiles, and suggests that

Malcolm Smith; Shane Dikolli

1995-01-01

81

U.S. Offshore Wind Manufacturing and Supply Chain Development  

SciTech Connect

The objective of the report is to provide an assessment of the domestic supply chain and manufacturing infrastructure supporting the U.S. offshore wind market. The report provides baseline information and develops a strategy for future development of the supply chain required to support projected offshore wind deployment levels. A brief description of each of the key chapters includes: » Chapter 1: Offshore Wind Plant Costs and Anticipated Technology Advancements. Determines the cost breakdown of offshore wind plants and identifies technical trends and anticipated advancements in offshore wind manufacturing and construction. » Chapter 2: Potential Supply Chain Requirements and Opportunities. Provides an organized, analytical approach to identifying and bounding the uncertainties associated with a future U.S. offshore wind market. It projects potential component-level supply chain needs under three demand scenarios and identifies key supply chain challenges and opportunities facing the future U.S. market as well as current suppliers of the nation’s land-based wind market. » Chapter 3: Strategy for Future Development. Evaluates the gap or competitive advantage of adding manufacturing capacity in the U.S. vs. overseas, and evaluates examples of policies that have been successful . » Chapter 4: Pathways for Market Entry. Identifies technical and business pathways for market entry by potential suppliers of large-scale offshore turbine components and technical services. The report is intended for use by the following industry stakeholder groups: (a) Industry participants who seek baseline cost and supplier information for key component segments and the overall U.S. offshore wind market (Chapters 1 and 2). The component-level requirements and opportunities presented in Section 2.3 will be particularly useful in identifying market sizes, competition, and risks for the various component segments. (b) Federal, state, and local policymakers and economic development agencies, to assist in identifying policies with low effort and high impact (Chapter 3). Section 3.3 provides specific policy examples that have been demonstrated to be effective in removing barriers to development. (c) Current and potential domestic suppliers in the offshore wind market, in evaluating areas of opportunity and understanding requirements for participation (Chapter 4). Section 4.4 provides a step-by-step description of the qualification process that suppliers looking to sell components into a future U.S. offshore wind market will need to follow.

Hamilton, Bruce Duncan [Navigant Consulting, Inc.

2013-02-22

82

Reinforced concrete offshore platform  

SciTech Connect

A reinforced concrete offshore platform is described comprising a honeycomb foundation (A), a supporting structure (B) and an above-surface section (C) carrying appropriate equipment. The honeycomb foundation (A) and the supporting structure (B) are made of prefabricated reinforced concrete elements which are polyhedral hollow prisms arranged with gaps between the external sides thereof and joined by a system of prestressed vertical diaphragm walls and horizontal diaphragm walls formed by pre-tensioning reinforcing bars placed in the gaps between the faces of the prisms and casting in-situ the gaps later on.

Martyshenko, J.P.; Martyshenko, S.J.; Kotelnikov, J.S.; Kutukhtin, E.G.; Petrosian, M.S.; Ilyasova, N.I.; Volkov, J.S.; Vardanian, A.M.

1987-10-20

83

The Use of Centrifugal Separators for Offshore Gas Production  

Microsoft Academic Search

For offshore installations, the use of centrifugal separators results in a reduction of capital investments for production equipment, and a reduction in construction costs can be realized. Centrifugal separators are relatively small in diameter, light in weight, and yield efficient separation of gas well fluids for a wide range of flow rates. This flexibility results in the design and onshore

W. R. Lobdell; L. M. Ayers

1974-01-01

84

Grid power integration technologies for offshore ocean wave energy  

Microsoft Academic Search

In this paper, the advanced electric technologies for grid power integration of different offshore wave energy conversion devices are presented. The electrical connection configurations for integrating the electric power of the multi wave energy conversion devices such as the Oscillating Water Column, Pelamis, the Wave Point Absorbers and the Wave Dragon are developed by employing the most efficient low cost

Tarek Ahmed; Katsumi Nishida; Mutsuo Nakaoka

2010-01-01

85

Offshore Series Wind Turbine Variable Hub heights & rotor diameters  

E-print Network

Enables aerodynamic efficiency and reduces loads to the drive train, thereby reducing maintenance cost3.6MW Offshore Series Wind Turbine GE Energy #12;Feature Variable Hub heights & rotor diameters Variable Speed Control and Advanced Blade Pitch WindVAR (optional) (Wind-Volt-Amp-Reactive "WindVAR") Low

Firestone, Jeremy

86

Offshore sand for reinforced concrete  

Microsoft Academic Search

A figure of 0.075% by weight of sand was arrived at as a safe limit for allowable Cl? ion content in offshore sand for OPC based reinforced concrete. A 2m high sand column was fabricated for checking the effects of natural drainage and simulated rain on the chloride levels in offshore sand, and the action of even 80mm of rain

W. P. S. Dias; G. A. P. S. N. Seneviratne; S. M. A. Nanayakkara

2008-01-01

87

Offshore Drilling From Ice Platforms  

Microsoft Academic Search

This paper describes a method successfully developed for drilling offshore from a floating ice platform. This method has allowed exploration wells to be drilled economically in the Canadian Arctic islands without years of waiting for sophisticated offshore drilling vessels to be developed, financed, and built to operate in the severe ice conditions prevalent in the area.

G. L. Hood; H. J. Strain; D. J. Baudais

1976-01-01

88

Ice protection of offshore platforms  

Microsoft Academic Search

Climate change-induced reduction in the extent and duration of sea ice cover, as well as an increase in energy demands, has caused renewed interest in exploring and drilling for oil in Arctic waters. Superstructure icing from sea spray and atmospheric icing in the Arctic may impact offshore platform operations. Though icing has not caused the loss of an offshore platform,

Charles C. Ryerson

2011-01-01

89

Beyond offshoring: assess your company's global potential.  

PubMed

In the past few years, companies have become aware that they can slash costs by offshoring: moving jobs to lower-wage locations. But this practice is just the tip of the iceberg in terms of how globalization can transform industries, according to research by the McKinsey Global Institute (MGI). The institute's yearlong study suggests that by streamlining their production processes and supply chains globally, rather than just nationally or regionally, companies can lower their costs-as we've seen in the consumer-electronics and PC industries. Companies can save as much as 70% of their total costs through globalization--50% from offshoring, 5% from training and business-task redesign, and 15% from process improvements. But they don't have to stop there. The cost reductions make it possible to lower prices and expand into new markets, attracting whole new classes of customers. To date, however, few businesses have recognized the full scope of performance improvements that globalization makes possible, much less developed sound strategies for capturing those opportunities. In this article, Diana Farrell, director of MGI, offers a step-by-step approach to doing both things. Among her suggestions: Assess where your industry falls along the globalization spectrum, because not all sectors of the economy face the same challenges and opportunities at the same time. Also, pay attention to production, regulatory, and organizational barriers to globalization. If any of these can be changed, size up the cost-saving (and revenue-generating) opportunities that will emerge for your company as a result of those changes. Farrell also defines the five stages of globalization-market entry, product specialization, value chain disaggregation, value chain reengineering, and the creation of new markets-and notes the different levers for cutting costs and creating value that companies can use in each phase. PMID:15605568

Farrell, Diana

2004-12-01

90

Foam pigs solve pipe cleaning problems offshore Brazil  

SciTech Connect

Pipeline systems in which conventional pigs cannot be run are common in such complex offshore installations as are found in Brazil`s Campos basin. These systems may contain changing pipe diameters or wet christmas trees and manifolds. A new concept for using low cost, low-density foam pigs for both liquid removal in wet-gas pipelines and paraffin removal in oil and multiphase pipelines has been successfully tested offshore Brazil. Although the present discussion focuses on condensate and paraffin removal in pipelines, the principles can be applied to several kinds of operations including general pipeline cleaning, product removal or separation in pipeline, corrosion evaluation, and chemical product application.

Lima, P.C.R.; Neto, S.J.A. [Petroleo Brasileiro S.A., Rio de Janeiro (Brazil)

1995-10-02

91

Mobile offshore drilling units for frontier areas  

SciTech Connect

As response to the expanded Five-Year Offshore Leasing Plan a tremendous amount of construction and expansion has been underway in the offshore industry. This presentation is intended to provide a sampling of the mobile offshore drilling units which are expected to be used in frontier areas offshore Alaska.

Kelly, P.L.

1983-04-01

92

Bahrain's offshore banking center  

SciTech Connect

The economic effects of Bahrain's schemes for licensing offshore banking units (OBUs) were the immediate response of major international banks and the financial services the banking center has rendered by improving regional money and exchange markets at a time when a Middle East link was needed to service the increasing demand for oil-wealth banking services. Bahrain's leadership also created a favorable climate. Aggressive competition from banks in Kuwait and Saudi Arabia have caused some friction, but informal supervision by the Bahrain Monetary Agency (BMA) should be able to avoid serious difficulty. Bahrain's success required a banking infrastructure, a free-enterprise system, a willingness to maintain banking standards, a country small enough to benefit directly from OBU income, and a gap in nearby competing centers. 39 references, 1 figure, 5 tables. (DCK)

Gerakis, A.S.; Roncesvalles, O.

1983-01-01

93

Activity based interfaces in online social networks  

E-print Network

The goal of the project is to explore how activity-based interfaces can create more meaningful experiences for the users and builders of online social networking sites. Medina, a social-networking site based on the idea ...

Laraqui, Jawad

2007-01-01

94

Meren field water injection project offshore Nigeria  

SciTech Connect

The Meren Water Injection Project, which is one of the largest in West Africa in terms of injection volume, secondary reserves to be recovered and cost, is located in the Meren field offshore Nigeria. This study presents an updated comprehensive plan to deplete 7 reservoir units in sands that have been producing under solution gas drive and gravity segregation with minimal water influx. The reservoir units contain ca 80% of the original oil-in-place in Meren field. Detailed studies have been undertaken to evaluate the performances of the 7 reservoirs with a view to developing a secondary recovery plan which has been brought into reality. Injection was to start in mid-1982 but was delayed until mid-1983. The effect of the delay and the changing of injector locations on recovery and cost is discussed.

Adetoba, L.A.

1984-04-01

95

Investigation of Wind Turbine Rotor Concepts for Offshore Wind Farms  

NASA Astrophysics Data System (ADS)

Current plans in offshore wind energy developments call for further reduction of cost of energy. In order to contribute to this goal, several wind turbine rotor concepts have been investigated. Assuming the future offshore wind turbines will operate only in the offshore wind farms, the rotor concepts are not only evaluated for their stand-alone performances and their potential in reducing the loads, but also for their performance in an offshore wind farm. In order to do that, the 10MW reference wind turbine designed in Innwind.EU project is chosen as baseline. Several rotor parameters have been modified and their influences are investigated for offshore wind turbine design purposes. This investigation is carried out as a conceptual parametrical study. All concepts are evaluated numerically with BOT (Blade optimisation tool) software in wind turbine level and with Farmflow software in wind farm level for two wind farm layouts. At the end, all these concepts are compared with each other in terms of their advantages and disadvantages.

Ceyhan, Özlem; Grasso, Francesco

2014-06-01

96

Offshoring and Directed Technical Change  

E-print Network

To study the short-run and long-run implications on wage inequality, we introduce directed technical change into a Ricardian model of offshoring. A unique final good is produced by combining a skilled and an unskilled ...

Acemoglu, Daron

2012-11-24

97

Methane Seeps along Offshore Virginia  

USGS Multimedia Gallery

Numerous distinct methane streams emanating from the seafloor at an upper slope (< 500 m water depth) cold seep site offshore Virginia. Image courtesy of NOAA Okeanos Explorer Program, 2013 Northeast U.S. Canyons Expedition....

98

Reassessment of offshore platforms  

SciTech Connect

Data from Hurricane Andrew demonstrated that the systems and procedures in place for evacuating offshore workers and minimizing oil spills and environmental damage functioned as planned. While the vast majority of the platforms survived the storm with no damage, a few of the older platforms (installed prior to 1972) either collapsed or suffered severe damage. The collapsed platforms were designed with insufficient deck height to clear the storm waves. In recent years, the API RP 2A has introduced guidance for minimum air gap, minimum structures, platform inspection and platform reuse. These provisions, coupled with natural attribution of the older platforms, will significantly improve the performance of platforms in the future. The reliability of NDT techniques to detect major structural defects should be improved through continued research. While flooded member detection is used by several operators as a screening tool to detect major defects underwater, its reliability is not always good and further research is needed in this area. Another area of high priority research is related to the use of Remotely Operated Vehicles (ROV) to perform underwater inspection of structures. 51 refs., 7 figs.

Nair, V.V.D.; Kuhn, J.M. (Mobil Research and Development Corporation, Dallas, TX (United States))

1993-05-01

99

Analyzing the Deployment of Large Amounts of Offshore Wind to Design an Offshore Transmission Grid in the United States: Preprint  

SciTech Connect

This paper revisits the results from the U.S. Department of Energy's '20% Wind Energy By 2030' study, which envisioned that 54 GW of offshore wind would be installed by said year. The analysis is conducted using the Regional Energy Deployment System (ReEDS), a capacity expansion model developed by the National Renewable Energy Laboratory. The model is used to optimize the deployment of the 54 GW of wind capacity along the coasts and lakes of the United States. The graphical representation of the results through maps will be used to provide a qualitative description for planning and designing an offshore grid. ReEDS takes into account many factors in the process of siting offshore wind capacity, such as the quality of the resource, capital and O&M costs, interconnection costs, or variability metrics (wind capacity value, forecast error, expected curtailment). The effect of these metrics in the deployment of offshore wind will be analyzed through examples in the results.

Ibanez, E.; Mai, T.; Coles, L.

2012-09-01

100

76 FR 24504 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013, 2014

...National Offshore Safety Advisory Committee...National Offshore Safety Advisory Committee...Wyndham Riverfront Hotel, Bacchus room...Department of Homeland Security'' and the docket...National Offshore Safety Advisory Committee...and gas offshore industry. Agenda The...

2011-05-02

101

Offshore Renewable Energy R&D (Fact Sheet)  

SciTech Connect

This fact sheet describes the offshore renewable energy R&D efforts at NREL's NWTC. As the United States increases its efforts to tap the domestic energy sources needed to diversify its energy portfolio and secure its energy supply, more attention is being focused on the rich renewable resources located offshore. Offshore renewable energy sources include offshore wind, waves, tidal currents, ocean and river currents, and ocean thermal gradients. According to a report published by the National Renewable Energy Laboratory (NREL) in 2010,1 U.S. offshore wind resources have a gross potential generating capacity four times greater than the nation's present electric capacity, and the Electric Power Research Institute estimates that the nation's ocean energy resources could ultimately supply at least 10% of its electric supply. For more than 30 years, NREL has advanced the science of renewable energy while building the capabilities to guide rapid deployment of commercial applications. Since 1993, NREL's National Wind Technology Center (NWTC) has been the nation's premier wind energy research facility, specializing in the advancement of wind technologies that range in size from a kilowatt to several megawatts. For more than 8 years, the NWTC has been an international leader in the field of offshore floating wind system analysis. Today, researchers at the NWTC are taking their decades of experience and extensive capabilities and applying them to help industry develop cost-effective hydrokinetic systems that convert the kinetic energy in water to provide power for our nation's heavily populated coastal regions. The center's capabilities and experience cover a wide spectrum of wind and water energy engineering disciplines, including atmospheric and ocean fluid mechanics, aerodynamics; aeroacoustics, hydrodynamics, structural dynamics, control systems, electrical systems, and testing.

Not Available

2011-10-01

102

Superconducting light generator for large offshore wind turbines  

NASA Astrophysics Data System (ADS)

Offshore wind market demands higher power rate and reliable turbines in order to optimize capital and operational cost. These requests are difficult to overcome with conventional generator technologies due to a significant weight and cost increase with the scaling up. Thus superconducting materials appears as a prominent solution for wind generators, based on their capacity to held high current densities with very small losses, which permits to efficiently replace copper conductors mainly in the rotor field coils. However the state-of-the-art superconducting generator concepts still seem to be expensive and technically challenging for the marine environment. This paper describes a 10 MW class novel direct drive superconducting generator, based on MgB2 wires and a modular cryogen free cooling system, which has been specifically designed for the offshore wind industry needs.

Sanz, S.; Arlaban, T.; Manzanas, R.; Tropeano, M.; Funke, R.; Ková?, P.; Yang, Y.; Neumann, H.; Mondesert, B.

2014-05-01

103

NCCCP: Cost Study  

Cancer.gov

For this element of the evaluation, RTI developed a data collection protocol that identified the various resource units and their respective costs. RTI used the various core components of NCCCP in deriving activity-based costs wherein each of the core components was considered a separate activity.

104

The Offshore Services Global Value Chain  

E-print Network

The Offshore Services Global Value Chain ECONOMIC UPGRADING AND WORKFORCE DEVELOPMENT Karina & COMPETITIVENESS #12;The Offshore Services Global Value Chain: Economic Upgrading and Workforce Development "Skills for Upgrading: Workforce Development and Global Value Chains in Developing Countries" This research project

Richardson, David

105

Offshore Aquaculture in the United States  

E-print Network

Offshore Aquaculture in the United States: Economic Considerations, Implications & Opportunities from: http://aquaculture.noaa.gov This document should be cited as follows: Rubino, Michael (editor). 2008. Offshore Aquaculture in the United States: Economic Considerations, Implications & Opportunities

106

Offshore Drilling With Preformed Stable Foam  

Microsoft Academic Search

Preformed stable foam has proven successful in drilling many onshore underpressured or fluidsensitive formations, however, its use in offshore applications to date has been limited. Recently two redrills were completed offshore in the Santa Barbara Channel with stable foam. Because the operation was performed offshore, it offered new challenges. 1. The use of foam in conjunction with a downhole mud

D. L. Hall; R. D. Roberts

1984-01-01

107

Mobile robots for offshore inspection and manipulation  

Microsoft Academic Search

This paper analyzes the potential to apply mobile service robots in offshore oil and gas producing environments. The required hardware and software components and abilities of such a mobile offshore inspection and manipulation robot are presented in this paper. Possible applications of mobile service robots in an offshore environment range from simple visual inspection tasks to physical intervention with the

Matthias Bengel; Kai Pfeiffer; Birgit Graf; Alexander Bubeck; Alexander Verl

2009-01-01

108

Offshore Wind Turbines: Some Technical Challenges  

E-print Network

1 Offshore Wind Turbines: Some Technical Challenges Prof. Guy Houlsby FREng Oxford University House engineers concerned with installation of offshore wind turbines. The author is Professor of Civil issues · An example: ­ DTI project on foundations for offshore turbines · Conclusions The talk will begin

Houlsby, Guy T.

109

30 CFR 550.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2013 CFR

...for reproduction and processing costs. 550.196 Section 550...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) BOEM will reimburse you for costs of reproducing data and...

2013-07-01

110

30 CFR 250.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2010 CFR

...for reproduction and processing costs. 250.196 Section 250...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) MMS will reimburse you for costs of reproducing data and...

2010-07-01

111

30 CFR 250.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2013 CFR

...for reproduction and processing costs. 250.196 Section 250...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) BSEE will reimburse you for costs of reproducing data and...

2013-07-01

112

30 CFR 250.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2011 CFR

...for reproduction and processing costs. 250.196 Section 250...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) MMS will reimburse you for costs of reproducing data and...

2011-07-01

113

30 CFR 550.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2014 CFR

...for reproduction and processing costs. 550.196 Section 550...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) BOEM will reimburse you for costs of reproducing data and...

2014-07-01

114

30 CFR 250.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2014 CFR

...for reproduction and processing costs. 250.196 Section 250...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) BSEE will reimburse you for costs of reproducing data and...

2014-07-01

115

30 CFR 250.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2012 CFR

...for reproduction and processing costs. 250.196 Section 250...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) BSEE will reimburse you for costs of reproducing data and...

2012-07-01

116

30 CFR 550.196 - Reimbursements for reproduction and processing costs.  

Code of Federal Regulations, 2012 CFR

...for reproduction and processing costs. 550.196 Section 550...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS...for reproduction and processing costs. (a) BOEM will reimburse you for costs of reproducing data and...

2012-07-01

117

Electrokinetic improvement of offshore foundations  

Microsoft Academic Search

Offshore and near-shore structures for energy exploration and production, harbour work and other facilities are often situated on very soft marine clay deposits that have shear strengths of a few kilopascals. The design of foundations embedded in these soft deposits often poses a challenge for geotechnical engineers, i.e., to satisfy the bearing capacity requirement, while at the same time minimizing

Silvana Micic

2003-01-01

118

Towers for Offshore Wind Turbines  

Microsoft Academic Search

Increasing energy demand coupled with pollution free production of energy has found a viable solution in wind energy. Land based windmills have been utilized for power generation for more than two thousand years. In modern times wind generated power has become popular in many countries. Offshore wind turbines are being used in a number of countries to tap the energy

V. J. Kurian; S. P. Narayanan; C. Ganapathy

2010-01-01

119

Offshore hydrodynamics. [Engineering design and research needs for offshore facilities  

SciTech Connect

In this paper, the author presents several applied as well as fundamental research problems related to the future needs of the offshore engineering. The paper starts out with a detailed discussion of the current uncertainties and constraints. Then, specific research issues on environmental input conditions, on the role of computational fluid dynamics, and on damping and dynamic response are presented. It is suggested that an appreciation of the input parameters, acquisition of extensive data to properly characterize the ocean environment, development of new methods and tools to acquire relevant data, extensive use of the computational methods, basic/applied research on the dynamic response and damping of structures, use of new materials, science-and-technology transfer from sister disciplines (e.g., aerospace industry, keeping in mind the complexities brought about by the presence of the air-water interface), and other related research will significantly enhance ones ability to design and build a variety of safer and economical offshore structures in deeper waters as well as over marginal fields in the next few decades. This herculean effort will require several decades of complementary experimental, numerical and analytical studies of ocean-structure interaction which will serve to elucidate the basic as well as applied fluid mechanics phenomena relevant to the offshore mechanics.

Sarpkaya, T. (Naval Postgraduate School, Monterrey, CA (United States). Dept. of Mechanical Engineering)

1993-02-01

120

Offshore northern Europe activity begins a slow recovery  

SciTech Connect

The offshore industry in northwest Europe has begun its recovery. Investment in new oil projects has resumed, reflecting growing confidence that the $18/bbl crude price is sustainable. Renewed spending on oil projects has also been helped by revamping offshore projects to reduce costs and make new development viable at lower prices. Industry confidence in the North Sea was also given a boost by the decision to proceed with the $7.8 billion development of the Troll and Sleipner gas fields. Drilling activity is also starting to recover. Since the beginning of this year, 14 rigs have been brought back into service and there are now 50 semisubmersibles and jack ups active on exploration and appraisal work. There were 88 rigs operating at the start of 1986, and there are still 61 rigs stacked in northwest Europe.

Vielvoye, R.

1987-06-29

121

Department of Energy Awards $43 Million to Spur Offshore Wind Energy, Wind Program Newsletter, September 2011 Edition (Brochure)  

SciTech Connect

EERE Wind Program Quarterly Newsletter - September 2011. In September, the U.S. Department of Energy announced that it will award $43 million over the next five years to 41 projects across 20 states to speed technical innovations, lower costs, and shorten the timeline for deploying offshore wind energy systems. The projects will advance wind turbine design tools and hardware, improve information about U.S. offshore wind resources, and accelerate the deployment of offshore wind by reducing market barriers such as supply chain development, transmission and infrastructure. The projects announced in September focus on approaches to advancing offshore technology and removing market barriers to responsible offshore wind energy deployment. Funding is subject to Congressional appropriations.

Not Available

2011-09-01

122

Fatigue handbook: Offshore steel structures  

SciTech Connect

The contents of this book are: Overview of Offshore Steel Structures; Loads on Ocean Structures; Fracture Mechanics As a Tool in Fatigue Analysis; Basic Fatigue Properties of Welded Joints; Significance of Defects; Improving the Fatigue Strength of Welded Joints; Effects of Marine Environment and Cathodic Protection on Fatigue of Structural Steels Fatigue of Tubular Joints; Unstable Fracture; Fatigue Life Calculations; and Fatigue in Building Codes Background and Applications.

Almarnaess, A.

1985-01-01

123

Offshoring in the Semiconductor Industry: Historical Perspectives  

Microsoft Academic Search

Semiconductor design is a frequently-cited example of the new wave of offshoring and foreign-outsourcing of service sector jobs. It is certainly a concern to U.S. design engineers themselves. In addition to the current wave of white-collar outsourcing, the industry also has a rich experience with offshoring of manufacturing activity. Semiconductor companies were among the first to invest in offshore facilities

Clair Brown; Greg Linden

2005-01-01

124

Activity-based profiling of proteases.  

PubMed

Proteolytic enzymes are key signaling molecules in both normal physiological processes and various diseases. After synthesis, protease activity is tightly controlled. Consequently, levels of protease messenger RNA and protein often are not good indicators of total protease activity. To more accurately assign function to new proteases, investigators require methods that can be used to detect and quantify proteolysis. In this review, we describe basic principles, recent advances, and applications of biochemical methods to track protease activity, with an emphasis on the use of activity-based probes (ABPs) to detect protease activity. We describe ABP design principles and use case studies to illustrate the application of ABPs to protease enzymology, discovery and development of protease-targeted drugs, and detection and validation of proteases as biomarkers. PMID:24905783

Sanman, Laura E; Bogyo, Matthew

2014-01-01

125

1991 worldwide offshore contractors and equipment directory  

SciTech Connect

This book is the information source-book for the international offshore oil industry. Within this single convenient reference you'll find addresses, phone numbers, telex, fax and cable listings for more than 3,500 companies and their key personnel in the drilling, workover, construction, service/supply/manufacturers, geophysical, diving and transportation segments of the offshore industry. Along with this vital contact information, the authors include such pertinent data as rig specifications, ownership, an equipment index, a company index and a current survey of offshore production systems from Offshore Incorporating the Oilman.

Not Available

1991-01-01

126

Offshore Coastal Wind Speed Gradients: issues for the design and development of large offshore windfarms  

E-print Network

indicates that within the coastal zone, wind speeds at typical turbine hub-heights can change by 2 m/s over the area of the wind farm appear to be small and negligible. 1. INTRODUCTION As large offshore wind farmsOffshore Coastal Wind Speed Gradients: issues for the design and development of large offshore

Pryor, Sara C.

127

76 FR 11503 - National Offshore Safety Advisory Committee; Vacancies  

Federal Register 2010, 2011, 2012, 2013, 2014

...safety and training related to offshore exploration and construction...representing enterprises specializing in offshore drilling. To be eligible, applicants for...exploration for and the recovery of offshore mineral resources....

2011-03-02

128

76 FR 39410 - National Offshore Safety Advisory Committee; Vacancies  

Federal Register 2010, 2011, 2012, 2013, 2014

...have recent practical experience on vessels or offshore units involved in the offshore mineral and energy industry; (d) One member representing enterprises specializing in offshore drilling; and, (e) One member representing...

2011-07-06

129

77 FR 17491 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF HOMELAND SECURITY Coast Guard [Docket...National Offshore Safety Advisory Committee...Department of Homeland Security. ACTION: Committee...National Offshore Safety Advisory Committee...and gas offshore industry. These meetings...New Orleans Arts Hotel, 700...

2012-03-26

130

Advanced synthetics balance environmental, cost factors  

SciTech Connect

This paper briefly reviews the history of drilling fluid development for the offshore oil and gas industry. It describes the types of fluids first used in the North Sea and Gulf of Mexico and the changes which have had to develop as a result of more stringent environmental regulations. The paper goes on to describe the future of offshore, environmentally friendly drilling fluids and the estimated cost associated with them. It culminates with methods to reduce cost by making drilling fluid selection based on the local environmental regulations, the expected well environment, and ultimate performance and cost of the fluid.

NONE

1995-10-01

131

Development of fast wireless detection system for fixed offshore platform  

NASA Astrophysics Data System (ADS)

Offshore platforms' security is concerned since in 1950s and 1960s, and in the early 1980s some important specifications and standards are built, and all these provide technical basis of fixed platform design, construction, installation and evaluation. With the condition that more and more platforms are in serving over age, the research about the evaluation and detection technology of offshore platform has been a hotspot, especially underwater detection, and assessment method based on the finite element calculation. For fixed platform structure detection, conventional NDT methods, such as eddy current, magnetic powder, permeate, X-ray and ultrasonic, etc, are generally used. These techniques are more mature, intuitive, but underwater detection needs underwater robot, the necessary supporting tools of auxiliary equipment, and trained professional team, thus resources and cost used are considerable, installation time of test equipment is long. This project presents a new kind of fast wireless detection and damage diagnosis system for fixed offshore platform using wireless sensor networks, that is, wireless sensor nodes can be put quickly on the offshore platform, detect offshore platform structure global status by wireless communication, and then make diagnosis. This system is operated simply, suitable for offshore platform integrity states rapid assessment. The designed system consists in intelligence acquisition equipment and 8 wireless collection nodes, the whole system has 64 collection channels, namely every wireless collection node has eight 16-bit accuracy of A/D channels. Wireless collection node, integrated with vibration sensing unit, embedded low-power micro-processing unit, wireless transceiver unit, large-capacity power unit, and GPS time synchronization unit, can finish the functions such as vibration data collection, initial analysis, data storage, data wireless transmission. Intelligence acquisition equipment, integrated with high-performance computation unit, wireless transceiver unit, mobile power unit and embedded data analysis software, can totally control multi-wireless collection nodes, receive and analyze data, parameter identification. Data is transmitted at the 2.4GHz wireless communication channel, every sensing data channel in charge of data transmission is in a stable frequency band, control channel responsible for the control of power parameters is in a public frequency band. The test is initially conducted for the designed system, experimental results show that the system has good application prospects and practical value with fast arrangement, high sampling rate, high resolution, capacity of low frequency detection.

Li, Zhigang; Yu, Yan; Jiao, Dong; Wang, Jie; Li, Zhirui; Ou, Jinping

2011-04-01

132

Hydrocarbon traps along Louisiana offshore  

SciTech Connect

A compilation of potential hydrocarbon trap types has been assembled for the Louisiana offshore, from coastal plain to abyssal plain. These potential traps are listed according to paleophysiographic provinces: coastal plain, shelf, shelf break, upper slope, middle slope, lower slope, and abyssal plain. Characteristics of each trap type are tabulated. The characteristics include tectonics, regional and local sedimentation rates and types, position within an evolving sequence as determined by sequence stratigraphy, duration of reservoir and/or trap creation, and sea level position. Regional geologic processes, such as salt tectonics, and approximate rates at which they operate are also listed.

Lowrie, A.; Sullivan, N.

1989-03-01

133

ENERGY FOR SUSTAINABILITY: HIGHLY COMPLIANT FLOATING OFFSHORE WIND TURBINES: FEASIBILITY ASSESSMENT THROUGH THEORY, SIMULATION AND DESIGN  

E-print Network

placing them in very deep water where floating structures are expected to be cost effective. At presentA-1 ENERGY FOR SUSTAINABILITY: HIGHLY COMPLIANT FLOATING OFFSHORE WIND TURBINES: FEASIBILITY, one large-scale floating turbine has been constructed as a proof of concept for a much larger project

Sweetman, Bert

134

The potential for grid power integration of offshore ocean wave energy in the UK  

Microsoft Academic Search

In this paper, the advanced electric technologies for grid power integration of different offshore wave energy conversion devices are presented. The electrical connection configurations for integrating the electric power of the multi wave energy conversion devices such as the Oscillating Water Column, Pelamis, the Wave Point Absorbers and the Wave Dragon are developed by employing the most efficient low cost

T. Ahmed; K. Nishida; M. Nakaoka

2010-01-01

135

The Effect of Repeated Interaction on Contract Choice: Evidence from Offshore Drilling  

Microsoft Academic Search

We argue that repeated interaction and high-powered formal contracts can be either substitutes or complements, depending on the relative impact of repeated interaction on incentive problems and contracting costs. In the offshore drilling industry, we find that oil and gas companies are less likely to choose fixed-price contracts as the frequency of their interaction with a driller increases. This supports

Kenneth S. Corts; Jasjit Singh

2004-01-01

136

World Energy Congress, Sydney, Australia September 5-9, 2004 OFFSHORE WIND POWER: EASING A RENEWABLE  

E-print Network

19 th World Energy Congress, Sydney, Australia September 5-9, 2004 1 OFFSHORE WIND POWER: EASING By the end of 2003, the worldwide installed capacity of grid-connected wind power exceeded 40GW corresponding exponentially over a 25-year period and in the process the cost of energy from wind power plants has been

137

Fault analysis of uncontrolled rectifier HVDC links for the connection of off-shore wind farms  

Microsoft Academic Search

The present paper introduces the use of an uncontrolled rectifier HVDC link for the connection of off-shore wind farms. The use of an uncontrolled rectifier instead of a line commutated thyristor (LCT) rectifier represents clear advantages in terms of installation cost and operation reliability. However, the rectifier can no longer be used to limit the HVDC link current during on-shore

R. Blasco-Gimenez; S. Ano-Villalba; J. Rodriguez; R. Pena; R. Cardenas; S. Bernal; F. Morant

2009-01-01

138

American Institute of Aeronautics and Astronautics Aeroelastic Modeling of Large Offshore Vertical-axis Wind  

E-print Network

Vertical-axis Wind Turbines: Development of the Offshore Wind Energy Simulation Toolkit Brian C. Owens of energy due to increased infrastructure, logistics, and operations and maintenance costs. Vertical will argue, the vertical-axis wind turbine (VAWT)2 has the potential to alleviate many challenges encountered

139

Finite element methods in a simulation code for offshore wind turbines  

Microsoft Academic Search

Offshore installation of wind turbines will become important for electricity supply in future. Wind conditions above sea are more favorable than on land and appropriate locations on land are limited and restricted. The dynamic behavior of advanced wind turbines is investigated with digital simulations to reduce time and cost in development and design phase. A wind turbine can be described

Wolfgang Kurz

1994-01-01

140

All that Glitters is not Gold: Employee Retention in Offshored Indian Information Technology Enabled Services  

Microsoft Academic Search

Increasing offshoring of customer contact services to destinations such as India is underpinned by the availability of low cost and high quality workforce. But this competitive advantage is under threat with talent shortages, wage increases, and, most importantly, high employee attrition. Based on empirical studies and person-organization fit literature, this paper identifies and addresses some of the key issues and

Mohan Thite

2010-01-01

141

From the SelectedWorks of George R. Parsons Valuing the Visual Disamenity of Offshore Wind  

E-print Network

. The Bureau of Ocean Energy Management, Regulation, and En- The authors are, respectively, researcher, College.9, 3.6, 6, and 9 miles offshore. The cost to residents liv- ing near the ocean was $80, $69, $35 about 70% of its energy for electricity from fossil fuel sources.1 As regulators look to address climate

Delaware, University of

142

Offshore investment funds: monsters in emerging markets?  

Microsoft Academic Search

Relative to onshore funds, offshore funds are subject to less taxes and regulation. So they may trade more aggressively and do so in ways that could destabilize the emerging markets. We study the behavior of the offshore funds in Korea and compare them with the onshore funds. Evidence suggests that they do trade more frequently. However, they do not engage

Woochan Kim; Shang-Jin Wei

2002-01-01

143

OFFSHORE WIND FARMS Guidance note for Environmental  

E-print Network

OFFSHORE WIND FARMS Guidance note for Environmental Impact Assessment In respect of FEPA and CPA requirements Version 2 - June 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment and Aquaculture Science (CEFAS) on behalf of the Marine Consents and Environment Unit (MCEU) © Crown Copyright

144

System Reliability Assessment of Offshore Pipelines  

Microsoft Academic Search

The title of this thesis, System Reliability Assessment of Offshore Pipelines, portrays the application of probabilistic methods in assessing the reliability of these structures. The main intention of this thesis is to identify, apply and judge the suitability of the probabilistic methods in evaluating the system reliability of offshore pipelines subjected to corrosion. The analysis was first emphasized on interpreting

Z. Mustaffa

2011-01-01

145

44 MArch 2006 Can offshore aquaculture  

E-print Network

44 MArch 2006 Can offshore aquaculture of carnivorous fish be sustainable? Case studies from and pollution concerns sug- gest that major environmental benefits are to be gained by moving cage aquaculture development of offshore aquaculture through university-industry-government partnerships. Emerging technology

Miami, University of

146

Domestic Options to Offshore Oil and Gas.  

ERIC Educational Resources Information Center

The continuing controversey over offshore oil/gas has given impetus to searching for domestic energy alternatives. The need for and types of several alternative sources are discussed. Indicates that the United States needs to pursue both offshore and other domestic liquid-fuel sources if it is to avoid becoming increasingly dependent on imports.…

Kash, Don E.

1983-01-01

147

A practical approach to fire hazard analysis for offshore structures.  

PubMed

Offshore quantitative risk assessments (QRA) have historically been complex and costly. For large offshore design projects, the level of detail required for a QRA is often not available until well into the detailed design phase of the project. In these cases, the QRA may be unable to provide timely hazard understanding. As a result, the risk reduction measures identified often come too late to allow for cost effective changes to be implemented. This forces project management to make a number of difficult or costly decisions. This paper demonstrates how a scenario-based approached to fire risk assessment can be effectively applied early in a project's development. The scenario or design basis fire approach calculates the consequence of a select number of credible fire scenarios, determines the potential impact on the platform process equipment, structural members, egress routes, safety systems, and determines the effectiveness of potential options for mitigation. The early provision of hazard data allows the project team to select an optimum design that is safe and will meet corporate or regulatory risk criteria later in the project cycle. The focus of this paper is on the application of the scenario-based approach to gas jet fires. This paper draws on recent experience in the Gulf of Mexico (GOM) and other areas to outline an approach to fire hazard analysis and fire hazard management for deep-water structures. The methods presented will include discussions from the recent June 2002 International Workshop for Fire Loading and Response. PMID:14602403

Krueger, Joel; Smith, Duncan

2003-11-14

148

Neuropeptide Y facilitates activity-based-anorexia.  

PubMed

The hypothesis that treatment with neuropeptide Y (NPY) can increase running activity and decrease food intake and body weight was tested. Female rats with a running wheel lost more weight than sedentary rats and ran progressively more as the availability of food was gradually reduced. When food was available for only 1h/day, the rats lost control over body weight. Correlatively, the level of NPY mRNA was increased in the hypothalamic arcuate nucleus. This phenomenon, activity-based-anorexia, was enhanced by intracerebroventricular infusion of NPY in rats which had food available during 2h/day. By contrast, NPY stimulated food intake but not wheel running in rats which had food available continuously. These findings are inconsistent with the prevailing theory of the role of the hypothalamus in the regulation of body weight according to which food intake is a homeostatic process controlled by "orexigenic" and "anorexigenic" neural networks. However, the finding that treatment with NPY, generally considered an "orexigen", can increase physical activity and decrease food intake and cause a loss of body weight is in line with the clinical observation that patients with anorexia nervosa are physically hyperactive and eat only little food despite having depleted body fat and up-regulated hypothalamic "orexigenic" peptides. PMID:17467917

Nergårdh, R; Ammar, A; Brodin, U; Bergström, J; Scheurink, A; Södersten, P

2007-06-01

149

Case history of drillstem failures offshore West Africa  

SciTech Connect

This paper reports that a high incidence of drillstem (or drillstring) failures was experienced by Conoco Inc. during drilling of exploration wells offshore West Africa. A data base of failure information was used to identify quickly where the majority of the problems occurred. Almost all failures were related to fatigue and corrosion. A study resulted in several recommendations that included improved practices in drill stem selection, quality assurance, and corrosion control. After the recommendations were implemented, a significant reduction in failures was recorded. This increased operating efficiency, reduced drilling costs, and improved safety.

Sweet, R.G. (Conoco U.K. Ltd. (GB))

1992-03-01

150

Benefits of VTOL aircraft in offshore petroleum logistics support  

NASA Technical Reports Server (NTRS)

The mission suitability and potential economic benefits of advanced VTOL aircraft were investigated for logistics support of petroleum operations in the North Sea and the Gulf of Mexico. Concepts such as the tilt rotor and lift/cruise fan are promising for future operations beyond 150 miles offshore, where their high cruise efficiency provides savings in trip time, fuel consumption, and capital investment. Depending upon mission requirements, the aircraft operating costs are reduced by as much as 20 percent to 50 percent from those of current helicopters.

Wilcox, D. E.; Shovlin, M. D.

1975-01-01

151

Underbalanced drilling benefits now available offshore  

SciTech Connect

Offshore underbalanced drilling (UBD) is a reality. Applications in older, partially depleted fields and new fields are being considered. However, low productivity reservoirs and fields with sub normal pressures causing drilling problems are currently the main targets for offshore UBD. With proper planning and the correct technique, both jointed pipe and coiled tubing UBD drilling operations have been carried out offshore with success. The main concerns for offshore UBD have been altered drilling practices and surface production system operation. These issues have been examined and equipment has been designed and tested to address them. Environmental, safety and health issues are paramount and have been studied carefully. Detailed well planning, engineering, and flow modeling have proven critical for successful offshore UBD operations. Examples are given from oil and gas fields.

Vozniak, J.P.; Cuthbertson, B.; Nessa, D.O.

1997-05-01

152

Offshore drilling, construction: Fortunes tied to stable gas prices  

Microsoft Academic Search

Significantly improved US natural gas prices fueled an upswing in offshore drilling in the Gulf of Mexico in late 1992. Stabilized gas prices will be necessary to support both the off-shore drilling and construction markets in 1993 and beyond. The article discusses both these segments in detail: offshore drilling and offshore construction.

S. S. Pagano; T. Marsh

1993-01-01

153

An Economic Evaluation Method of Offshore Drilling Platform Overhaul Projects  

Microsoft Academic Search

The stable and efficient operation of offshore drilling platform is the prerequisite that enable success of offshore petroleum exploration and development activities. Offshore drilling platforms are often required periodical overhaul to restore its operational capacity after long time use in the marine environment. However, not all offshore drilling platform overhaul projects are economically feasible. In order to determine the economic

Luo Dong-kun; Dai You-jin

2009-01-01

154

Quantifying the hurricane risk to offshore wind turbines  

E-print Network

Quantifying the hurricane risk to offshore wind turbines Stephen Rosea , Paulina Jaramilloa,1 GW will be required from shallow offshore turbines. Hurricanes are a potential risk to these turbines be destroyed by hurricanes in an offshore wind farm. We apply this model to estimate the risk to offshore wind

Jaramillo, Paulina

155

Offshore well test platform system  

SciTech Connect

This patent describes an offshore well test platform system positionable above one or more underwater wells. It comprises: a submergible buoy to be restrained below the surface of the water and above one or more underwater wells; a platform structure connectable to the buoy and having an upper portion extending above the surface of the water when connected to the buoy in an installed condition; a well test platform deck connected to the upper portion of the platformed structure; flexible riser means extendable between the one or more underwater wells and the platform deck for providing passage therethrough for well test or workover operations; and restraining means for connecting the submerged buoy to subsea anchors. The restraining means consists of equally spaced, laterally extending tensioned anchoring means having a single intersection of mooring forces at or above the platform deck.

Chiu, H.; Nelsen, D.K.

1990-03-06

156

Offshore drilling to increase in 1984  

SciTech Connect

A mid-year report presents a worldwide overview of offshore drilling operations. The Gulf of Mexico and the North Sea are posting substantial gains as companies rush to drill the millions of acres acquired in those sectors both last year and in previous offerings. The Middle East, Latin America and the Asia/Pacific offshore theaters will see only slight increases. The Mediterranean and African regions are expected to sustain declines. A region-by-region summary of the 1984 offshore forecast is presented showing exploration and appraisal activities, as well as development for all of these areas.

Not Available

1984-05-01

157

Assessment of Ports for Offshore Wind Development in the United States  

SciTech Connect

As offshore wind energy develops in the United States, port facilities will become strategic hubs in the offshore wind farm supply chain because all plant and transport logistics must transit through these facilities. Therefore, these facilities must provide suitable infrastructure to meet the specific requirements of the offshore wind industry. As a result, it is crucial that federal and state policy-makers and port authorities take effective action to position ports in the offshore wind value chain to take best advantage of their economic potential. The U.S. Department of Energy tasked the independent consultancy GL Garrad Hassan (GL GH) with carrying out a review of the current capability of U.S. ports to support offshore wind project development and an assessment of the challenges and opportunities related to upgrading this capability to support the growth of as many as 54 gigawatts of offshore wind installed in U.S. waters by 2030. The GL GH report and the open-access web-based Ports Assessment Tool resulting from this study will aid decision-makers in making informed decisions regarding the choice of ports for specific offshore projects, and the types of investments that would be required to make individual port facilities suitable to serve offshore wind manufacturing, installation and/or operations. The offshore wind industry in the United States is still in its infancy and this study finds that additional port facilities capable of supporting offshore wind projects are needed to meet the anticipated project build-out by 2030; however, no significant barriers exist to prevent the development of such facilities. Furthermore, significant port capabilities are in place today with purpose-build port infrastructure currently being built. While there are currently no offshore wind farms operating in the United States, much of the infrastructure critical to the success of such projects does exist, albeit in the service of other industries. This conclusion is based on GL GH’s review of U.S. ports infrastructure and its readiness to support the development of proposed offshore wind projects in U.S. waters. Specific examples of facility costs and benefits are provided for five coastal regions (North Atlantic, South Atlantic, Gulf of Mexico, Great Lakes, and Pacific) around the country. GL GH began this study by identifying the logistical requirements of offshore wind ports to service offshore wind. This review was based on lessons learned through industry practice in Northern Europe. A web-based port readiness assessment tool was developed to allow a capability gap analysis to be conducted on existing port facilities based on the identified requirements. Cost models were added to the assessment tool, which allowed GL GH to estimate the total upgrade cost to a port over the period 2014-2030 based on a set of regional project build-out scenarios. Port fee information was gathered from each port allowing an estimate of the potential revenue to the port under this same set of scenarios. The comparison of these revenue and improvement cost figures provides an initial indication of the level of offshore wind port readiness. To facilitate a more in-depth infrastructure analysis, six ports from different geographic regions, with varied levels of interest and preparedness towards offshore wind, were evaluated by modeling a range of installation strategies and port use types to identify gaps in capability and potential opportunities for economic development. Commonalities, trends, and specific examples from these case studies are presented and provide a summary of the current state of offshore wind port readiness in the U.S. and also illustrate the direction some ports have chosen to take to prepare for offshore wind projects. For example, the land area required for wind turbine and foundation manufacturing is substantial, particularly due to the large size of offshore wind components. Also, the necessary bearing capacities of the quayside and storage area are typically greater for offshore wind components than for more conventiona

Elkinton, Chris [DNV GL] [DNV GL; Blatiak, Alicia; Ameen, Hafsa

2014-03-21

158

Extensive English Summary CPB Special Publication 57: Wind energy at the North Sea: A social Cost-benefit analysis  

E-print Network

1 Extensive English Summary CPB Special Publication 57: Wind energy at the North Sea: A social Cost 2004, in which they requested a breakdown of the costs and benefits of 6,000 MW of offshore wind energy sensitivity analyses were carried out: 1. 6,000 MW offshore wind energy, ready in 2020 2. Equivalent

159

31 CFR 576.407 - Offshore transactions.  

Code of Federal Regulations, 2013 CFR

...Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY IRAQ STABILIZATION AND INSURGENCY SANCTIONS REGULATIONS Interpretations § 576.407 Offshore transactions. The...

2013-07-01

160

31 CFR 576.407 - Offshore transactions.  

Code of Federal Regulations, 2014 CFR

...Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY IRAQ STABILIZATION AND INSURGENCY SANCTIONS REGULATIONS Interpretations § 576.407 Offshore transactions. The...

2014-07-01

161

31 CFR 576.407 - Offshore transactions.  

Code of Federal Regulations, 2012 CFR

...Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY IRAQ STABILIZATION AND INSURGENCY SANCTIONS REGULATIONS Interpretations § 576.407 Offshore transactions. The...

2012-07-01

162

31 CFR 576.407 - Offshore transactions.  

Code of Federal Regulations, 2011 CFR

...Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY IRAQ STABILIZATION AND INSURGENCY SANCTIONS REGULATIONS Interpretations § 576.407 Offshore transactions. The...

2011-07-01

163

31 CFR 541.406 - Offshore transactions.  

Code of Federal Regulations, 2010 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY ZIMBABWE SANCTIONS REGULATIONS Interpretations § 541.406 Offshore transactions. The prohibitions in § 541.201 on...

2010-07-01

164

Embedded knowledge and offshore software development  

E-print Network

on evidence from a longitudinal case study of a British software company with an offshore subsidiary in India of Accounting and Finance, University of Manchester, Mezzanine Floor, Crawford House, Booth Street East

Sahay, Sundeep

165

EMS offshore. A new horizon for paramedics.  

PubMed

The difficulty in getting medical aid to offshore drilling platforms can be a source of life-threatening delays. Recently, some companies have charted new waters by actually stationing EMS crews on their rigs. PMID:10116023

Mallard, A S

1991-10-01

166

31 CFR 586.407 - Offshore transactions.  

Code of Federal Regulations, 2010 CFR

...Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY FEDERAL REPUBLIC OF YUGOSLAVIA (SERBIA & MONTENEGRO) KOSOVO SANCTIONS REGULATIONS Interpretations § 586.407 Offshore transactions. (a) The prohibitions contained...

2010-07-01

167

Outsourcing, offshoring and the US office market  

E-print Network

There is intense debate among industry analysts and scholars over potential job losses caused by offshoring. The real estate industry has been grappling to understanding the implications of these numbers, as some have ...

Topolewski, Tanya M., 1969-

2004-01-01

168

Visualization of vibration experienced in offshore platforms  

E-print Network

In this thesis, I design and evaluate methods to optimize the visualization of vortex-induced vibration (VIV) in marine risers. VIV is vibration experienced by marine risers in offshore drilling platforms due to ocean ...

Patrikalakis, Alexander Marinos Charles

2010-01-01

169

System architecture of offshore oil production systems  

E-print Network

This thesis presents an approach to applying Systems Architecture methods to the development of large, complex, commercial systems, particularly offshore oil and gas productions systems. The aim of this research was to ...

Keller, James (James Thomas)

2008-01-01

170

31 CFR 541.406 - Offshore transactions.  

Code of Federal Regulations, 2012 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY ZIMBABWE SANCTIONS REGULATIONS Interpretations § 541.406 Offshore transactions. The prohibitions in § 541.201 on...

2012-07-01

171

31 CFR 541.406 - Offshore transactions.  

Code of Federal Regulations, 2011 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY ZIMBABWE SANCTIONS REGULATIONS Interpretations § 541.406 Offshore transactions. The prohibitions in § 541.201 on...

2011-07-01

172

31 CFR 541.406 - Offshore transactions.  

Code of Federal Regulations, 2013 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY ZIMBABWE SANCTIONS REGULATIONS Interpretations § 541.406 Offshore transactions. The prohibitions in § 541.201 on...

2013-07-01

173

31 CFR 541.406 - Offshore transactions.  

Code of Federal Regulations, 2014 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY ZIMBABWE SANCTIONS REGULATIONS Interpretations § 541.406 Offshore transactions. The prohibitions in § 541.201 on...

2014-07-01

174

31 CFR 544.406 - Offshore transactions.  

Code of Federal Regulations, 2014 CFR

...Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WEAPONS OF MASS DESTRUCTION PROLIFERATORS SANCTIONS REGULATIONS Interpretations § 544.406 Offshore transactions. The...

2014-07-01

175

31 CFR 544.406 - Offshore transactions.  

Code of Federal Regulations, 2010 CFR

...Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WEAPONS OF MASS DESTRUCTION PROLIFERATORS SANCTIONS REGULATIONS Interpretations § 544.406 Offshore transactions. The...

2010-07-01

176

31 CFR 544.406 - Offshore transactions.  

Code of Federal Regulations, 2013 CFR

...Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WEAPONS OF MASS DESTRUCTION PROLIFERATORS SANCTIONS REGULATIONS Interpretations § 544.406 Offshore transactions. The...

2013-07-01

177

31 CFR 544.406 - Offshore transactions.  

Code of Federal Regulations, 2012 CFR

...Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WEAPONS OF MASS DESTRUCTION PROLIFERATORS SANCTIONS REGULATIONS Interpretations § 544.406 Offshore transactions. The...

2012-07-01

178

31 CFR 544.406 - Offshore transactions.  

Code of Federal Regulations, 2011 CFR

...Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WEAPONS OF MASS DESTRUCTION PROLIFERATORS SANCTIONS REGULATIONS Interpretations § 544.406 Offshore transactions. The...

2011-07-01

179

Application of inverse dispersion model for estimating volatile organic compounds emitted from the offshore industrial park  

NASA Astrophysics Data System (ADS)

In the last 20 years, the Yunlin offshore industrial park has significantly contributed to the economic development of Taiwan. Its annual production value has reached almost 12 % of Taiwan's GDP in 2012. The offshore industrial park also balanced development of urban and rural in areas. However, the offshore industrial park is considered the major source of air pollution to nearby counties, especially, the emission of Volatile Organic Compounds(VOCs). Studies have found that exposures to high level of some VOCs have caused adverse health effects on both human and ecosystem. Since both health and ecological effects of air pollution have been the subject of numerous studies in recent years, it is a critical issue in estimating VOCs emissions. Nowadays emission estimation techniques are usually used emissions factors in calculation. Because the methodology considered totality of equipment activities based on statistical assumptions, it would encounter great uncertainty between these coefficients. This study attempts to estimate VOCs emission of the Yunlin Offshore Industrial Park using an inverse atmospheric dispersion model. The inverse modeling approach will be applied to the combination of dispersion modeling result which input a given one-unit concentration and observations at air quality stations in Yunlin. The American Meteorological Society-Environmental Protection Agency Regulatory Model (AERMOD) is chosen as the tool for dispersion modeling in the study. Observed concentrations of VOCs are collected by the Taiwanese Environmental Protection Administration (TW EPA). In addition, the study also analyzes meteorological data including wind speed, wind direction, pressure and temperature etc. VOCs emission estimations from the inverse atmospheric dispersion model will be compared to the official statistics released by Yunlin Offshore Industrial Park. Comparison of estimated concentration from inverse dispersion modeling and official statistical concentrations will give a better understanding about the uncertainty of regulatory methodology. The model results will be discussed with the importance of evaluating air pollution exposure in risk assessment.

Tsai, M.; Lee, C.; Yu, H.

2013-12-01

180

Structural health and prognostics management for offshore wind turbines : an initial roadmap.  

SciTech Connect

Operations and maintenance costs for offshore wind plants are expected to be significantly higher than the current costs for onshore plants. One way in which these costs may be able to be reduced is through the use of a structural health and prognostic management system as part of a condition based maintenance paradigm with smart load management. To facilitate the creation of such a system a multiscale modeling approach has been developed to identify how the underlying physics of the system are affected by the presence of damage and how these changes manifest themselves in the operational response of a full turbine. The developed methodology was used to investigate the effects of a candidate blade damage feature, a trailing edge disbond, on a 5-MW offshore wind turbine and the measurements that demonstrated the highest sensitivity to the damage were the local pitching moments around the disbond. The multiscale method demonstrated that these changes were caused by a local decrease in the blade's torsional stiffness due to the disbond, which also resulted in changes in the blade's local strain field. Full turbine simulations were also used to demonstrate that derating the turbine power by as little as 5% could extend the fatigue life of a blade by as much as a factor of 3. The integration of the health monitoring information, conceptual repair cost versus damage size information, and this load management methodology provides an initial roadmap for reducing operations and maintenance costs for offshore wind farms while increasing turbine availability and overall profit.

Griffith, Daniel Todd; Resor, Brian Ray; White, Jonathan Randall; Paquette, Joshua A.; Yoder, Nathanael C. [ATA Engineering, San Diego, CA

2012-12-01

181

46 CFR 11.470 - Officer endorsements as offshore installation manager.  

Code of Federal Regulations, 2010 CFR

...endorsements as offshore installation manager. 11.470...endorsements as offshore installation manager. (a...endorsements as offshore installation manager (OIM) include... (i) Provides a description of the...

2010-10-01

182

Novel Compressed Air Approach to Off-Shore Wind Energy Storage (NSF Grant #: EFRI-1038294)! Principal Investigators: Perry Li1,a, Terry Simon1,b, James Van de Ven1,c, Eric Loth2,d, Steve Crane3,e!  

E-print Network

Novel Compressed Air Approach to Off-Shore Wind Energy Storage (NSF Grant #: EFRI-1038294@lightsailenergy.com! Options for Energy Storage Compatible with Wind Turbines:! Objective! Our objective is to create a cost effective local energy storage system for offshore wind turbines using an "open accumulator" high pressure

Li, Perry Y.

183

Teaching ABC & Cost Behaviors to Non-Numbers People  

ERIC Educational Resources Information Center

Simply put, a cost analysis studies how you spend your money. Activity based costing models associate costs with services and cost benefit analysis weighs whether or not the costs expended were worth the money given the efforts involved and the results achieved. This study seeks to understand the financial choices and information seeking behaviors…

Taylor, Virginia Anne; Rudnick, Martin

2007-01-01

184

Taming hurricanes with arrays of offshore wind turbines  

NASA Astrophysics Data System (ADS)

Hurricanes are causing increasing damage to many coastal regions worldwide. Offshore wind turbines can provide substantial clean electricity year-round, but can they also mitigate hurricane damage while avoiding damage to themselves? This study uses an advanced climate-weather computer model that correctly treats the energy extraction of wind turbines to examine this question. It finds that large turbine arrays (300+ GW installed capacity) may diminish peak near-surface hurricane wind speeds by 25-41 m s-1 (56-92 mph) and storm surge by 6-79%. Benefits occur whether turbine arrays are placed immediately upstream of a city or along an expanse of coastline. The reduction in wind speed due to large arrays increases the probability of survival of even present turbine designs. The net cost of turbine arrays (capital plus operation cost less cost reduction from electricity generation and from health, climate, and hurricane damage avoidance) is estimated to be less than today’s fossil fuel electricity generation net cost in these regions and less than the net cost of sea walls used solely to avoid storm surge damage.

Jacobson, Mark Z.; Archer, Cristina L.; Kempton, Willett

2014-03-01

185

Norwegian Offshore Stratigraphic Lexicon (NORLEX)  

NASA Astrophysics Data System (ADS)

The Norwegian Offshore Stratigraphic Lexicon (NORLEX) provides a relational stratigraphic database for the North Sea, Norwegian Sea, Barents Sea and Svalbard. Both regional lithostratigraphy and biostratigraphy are being substantially updated, following guidelines laid out in the International Stratigraphic Guide. The main body of information developed is available as a petroleum consortium (oracle-style) database, and the new lithostratigraphic definitions as a public domain (paper) document. NORLEX is presented as a browsing website via the internet at http://www.nhm.uio.no/norlex. Seismic cross-sections, core photographs, well logs, field outcrops, microfossil occurrences and other vital attributes are relationally cross-linked. In addition, there are menus for instantly finding updated formation and member tops or microfossil events in all wells, plus a map contouring routine for unit thicknesses and depths. Several new initiatives will expand data and user coverage: 1. Overhaul of Mesozoic stratigraphy, especially Triassic and Cretaceous, in the Barents Sea. 2. Coverage of East Greenland 3. Linkage to UK and Belgium and The Netherlands surface and subsurface stratigraphy 4. Creation of a Sequence Stratigraphic Framework for specific regions. 5. A national microfossil atlas to support zonations 6. Tight linkage to the basin datapacks in TimeScaleCreator Pro, as developed for Australia, New Zealand, Brasil, Gulf of Mexico, Canada and Russia. NORLEX may thus evolve to become STRATLEX, covering many basin regions.

Gradstein, Felix M.; Hammer, Oyvind; Brunstad, Harald; Charnock, Mike; Hellem, Terje; Sigve Lervik, Kjell; Anthonissen, Erik

2010-05-01

186

Lake Michigan Offshore Wind Feasibility Assessment  

SciTech Connect

The purpose of this project was to conduct the first comprehensive offshore wind assessment over Lake Michigan and to advance the body of knowledge needed to support future commercial wind energy development on the Great Lakes. The project involved evaluation and selection of emerging wind measurement technology and the permitting, installation and operation of the first mid-lake wind assessment meteorological (MET) facilities in Michigan’s Great Lakes. In addition, the project provided the first opportunity to deploy and field test floating LIDAR and Laser Wind Sensor (LWS) technology, and important research related equipment key to the sitting and permitting of future offshore wind energy development in accordance with public participation guidelines established by the Michigan Great Lakes Wind Council (GLOW). The project created opportunities for public dialogue and community education about offshore wind resource management and continued the dialogue to foster Great Lake wind resource utilization consistent with the focus of the GLOW Council. The technology proved to be effective, affordable, mobile, and the methods of data measurement accurate. The public benefited from a substantial increase in knowledge of the wind resources over Lake Michigan and gained insights about the potential environmental impacts of offshore wind turbine placements in the future. The unique first ever hub height wind resource assessment using LWS technology over water and development of related research data along with the permitting, sitting, and deployment of the WindSentinel MET buoy has captured public attention and has helped to increase awareness of the potential of future offshore wind energy development on the Great Lakes. Specifically, this project supported the acquisition and operation of a WindSentinel (WS) MET wind assessment buoy, and associated research for 549 days over multiple years at three locations on Lake Michigan. Four research objectives were defined for the project including to: 1) test and validate floating LIDAR technology; 2) collect and access offshore wind data; 3) detect and measure bird and bat activity over Lake Michigan; 4) conduct an over water sound propagation study; 5) prepare and offer a college course on offshore energy, and; 6) collect other environmental, bathometric, and atmospheric data. Desk-top research was performed to select anchorage sites and to secure permits to deploy the buoy. The project also collected and analyzed data essential to wind industry investment decision-making including: deploying highly mobile floating equipment to gather offshore wind data; correlating offshore wind data with conventional on-shore MET tower data; and performing studies that can contribute to the advancement and deployment of offshore wind technologies. Related activities included: • Siting, permitting, and deploying an offshore floating MET facility; • Validating the accuracy of floating LWS using near shoreline cup anemometer MET instruments; • Assessment of laser pulse technology (LIDAR) capability to establish hub height measurement of wind conditions at multiple locations on Lake Michigan; • Utilizing an extended-season (9-10 month) strategy to collect hub height wind data and weather conditions on Lake Michigan; • Investigation of technology best suited for wireless data transmission from distant offshore structures; • Conducting field-validated sound propagation study for a hypothetical offshore wind farm from shoreline locations; • Identifying the presence or absence of bird and bat species near wind assessment facilities; • Identifying the presence or absence of benthic and pelagic species near wind assessment facilities; All proposed project activities were completed with the following major findings: • Floating Laser Wind Sensors are capable of high quality measurement and recordings of wind resources. The WindSentinel presented no significant operational or statistical limitations in recording wind data technology at a at a high confidence level as compared to traditional an

Boezaart, Arnold [GVSU; Edmonson, James [GVSU; Standridge, Charles [GVSU; Pervez, Nahid [GVSU; Desai, Neel [University of Michigan; Williams, Bruce [University of Delaware; Clark, Aaron [GVSU; Zeitler, David [GVSU; Kendall, Scott [GVSU; Biddanda, Bopi [GVSU; Steinman, Alan [GVSU; Klatt, Brian [Michigan State University; Gehring, J. L. [Michigan State University; Walter, K. [Michigan State University; Nordman, Erik E. [GVSU

2014-06-30

187

The Seabed Stability Zonation in Chinese Offshore  

NASA Astrophysics Data System (ADS)

There are abundant natural resources and energy in Chinese offshore continental shelf, and which should be the most development potential region now and in the future. But the seabed of Chinese offshore is often under the instable status caused by many factors which deeply affects the safety of marine development. Marine geohazards is an active one among the influence factors. The marine geohazards means the geological factors developed in the seabed surface and the strata below the seabed, such as fault, shallow gas, landslide, coastal erosion, buried river channel, sand wave and sand ridge, easily liquefied sand layer etc., which will cause damage to the human life and property. In this paper, the seabed stability were analyzed and divided it into five grades based on the marine geohazards evaluation result which made by fuzzy mathematic model. Firstly, by collecting the analyzing the marine geohazards which distributed on the seabed or under the seabed, the marine geohazards maps in Chinese offshore were made and the classification system of marine geohazards was established. Then, the evaluation index system of seabed stability was set which included the seismic peak acceleration, geomorphology, direct geohazards and restricted geohazards. And the weighted value of each indicator was calculated by using analytic hierarchy process. And, a group of appropriate number with normal distribution was selected to replace the membership grade function. Based on above, a fuzzy evaluation model for seabed stability is established. Using the maps of marine geohazards, geomorphology maps and seismic peak acceleration maps as data source, using the fuzzy matrix as calculated method, based on the principles of maximum membership grade of fuzzy mathematics, we get the evaluation result of Chinese offshore with 6' by 6' grid unit. The maximum membership grade should be taken as the stability level in each unit. Above all, the seabed stability of Chinese offshore is divided into five grades according to the maximum membership grade. In this paper, we defined 5 classes which respectively were basically stable, relatively stable, medium, relatively unstable and unstable. By using statistical analysis method, a stability zonation map of the Chinese offshore has been drawn based on the evaluation result of each unit. From the stability map, Chinese offshore seabed stability was divided into sixty sub-regions with 5 classes. And the unstable sub-regions were mainly located in the North-East of Liaodong Bay, north of Laizhou Bay, the shoal in north Jiangsu, north Taiwan offshore and around Nan'ao Islands of Guangdong. Most Chinese offshore seabed stability has been in the relatively stable status.

Du, J.

2013-12-01

188

Offshore oil gas trends in ROVs tooling  

SciTech Connect

The ROVs that operate in today's offshore environment bear little or no resemblance to those which first began supporting the oil and gas work requirements less than 15 years ago. In that short span of time, an explosion of subsea technology has occurred, rendering older equipment obsolete and expanding subsea remote intervention capabilities beyond the horizon of intervention tasks originally envisioned. Today's offshore work ROVs employ the latest in robotics, fiver optics, acoustics, video, and computer technologies, and routinely achieve better than 90 percent operational availability. Leading offshore ROV operations companies have demonstrated less than 1 percent down-time over thousands of hours of operation. As the offshore oil and gas market evolves, the ever-expanding capabilities of the work ROV plays a major role in shaping the operational concepts employed in subsea oil and gas field exploration, development, and production. This paper explores the capabilities of available ROV systems in use offshore today, the economic trends driving ROV technology development, and the new trends in the employment of ROVs and their associated sensors and tooling systems.

Jacobson, J.R. (Perry Tritech Inc., Jupiter, FL (United States))

1994-04-01

189

Federal Offshore Statistics, 1993. Leasing, exploration, production, and revenue as of December 31, 1993  

SciTech Connect

This document contains statistical data on the following: federal offshore lands; offshore leasing activity and status; offshore development activity; offshore production of crude oil and natural gas; federal offshore oil and natural gas sales volume and royalties; revenue from federal offshore leases; disbursement of federal offshore revenue; reserves and resource estimates of offshore oil and natural gas; oil pollution in US and international waters; and international activities and marine minerals. A glossary is included.

Francois, D.K.

1994-12-31

190

Grid Simulator for Testing a Wind Turbine on Offshore Floating Platform  

SciTech Connect

An important aspect of such offshore testing of a wind turbine floating platform is electrical loading of the wind turbine generator. An option of interconnecting the floating wind turbine with the onshore grid via submarine power cable is limited by many factors such as costs and associated environmental aspects (i.e., an expensive and lengthy sea floor study is needed for cable routing, burial, etc). It appears to be a more cost effective solution to implement a standalone grid simulator on a floating platform itself for electrical loading of the test wind turbine. Such a grid simulator must create a stable fault-resilient voltage and frequency bus (a micro grid) for continuous operation of the test wind turbine. In this report, several electrical topologies for an offshore grid simulator were analyzed and modeled.

Gevorgian, V.

2012-02-01

191

Genetic differentiation between inshore and offshore Atlantic cod (Gadus morhua)  

E-print Network

Genetic differentiation between inshore and offshore Atlantic cod (Gadus morhua) off Newfoundland, and Sally V. Goddard Abstract: The genetic difference between inshore overwintering Atlantic cod (Gadus morhua) from Trinity Bay, Newfoundland, and offshore overwintering cod from the Grand Bank region

Ruzzante, Daniel E.

192

Strengthening America's Energy Security with Offshore Wind (Fact Sheet)  

SciTech Connect

This fact sheet describes the current state of the offshore wind industry in the United States and the offshore wind research and development activities conducted the U.S. Department of Energy Wind and Water Power Program.

Not Available

2012-02-01

193

Investigation on installation of offshore wind turbines  

NASA Astrophysics Data System (ADS)

Wind power has made rapid progress and should gain significance as an energy resource, given growing interest in renewable energy and clean energy. Offshore wind energy resources have attracted significant attention, as, compared with land-based wind energy resources, offshore wind energy resources are more promising candidates for development. Sea winds are generally stronger and more reliable and with improvements in technology, the sea has become a hot spot for new designs and installation methods for wind turbines. In the present paper, based on experience building offshore wind farms, recommended foundation styles have been examined. Furthermore, wave effects have been investigated. The split installation and overall installation have been illustrated. Methods appropriate when installing a small number of turbines as well as those useful when installing large numbers of turbines were analyzed. This investigation of installation methods for wind turbines should provide practical technical guidance for their installation.

Wang, Wei; Bai, Yong

2010-06-01

194

Efficient preliminary floating offshore wind turbine design and testing methodologies and application to a concrete spar design.  

PubMed

The current key challenge in the floating offshore wind turbine industry and research is on designing economic floating systems that can compete with fixed-bottom offshore turbines in terms of levelized cost of energy. The preliminary platform design, as well as early experimental design assessments, are critical elements in the overall design process. In this contribution, a brief review of current floating offshore wind turbine platform pre-design and scaled testing methodologies is provided, with a focus on their ability to accommodate the coupled dynamic behaviour of floating offshore wind systems. The exemplary design and testing methodology for a monolithic concrete spar platform as performed within the European KIC AFOSP project is presented. Results from the experimental tests compared to numerical simulations are presented and analysed and show very good agreement for relevant basic dynamic platform properties. Extreme and fatigue loads and cost analysis of the AFOSP system confirm the viability of the presented design process. In summary, the exemplary application of the reduced design and testing methodology for AFOSP confirms that it represents a viable procedure during pre-design of floating offshore wind turbine platforms. PMID:25583870

Matha, Denis; Sandner, Frank; Molins, Climent; Campos, Alexis; Cheng, Po Wen

2015-02-28

195

Optimizing remote offshore drilling operations  

Microsoft Academic Search

Gulf of Suez Petroleum Company's experience in using mini-computers as an aid in controlling drilling operations has been an unqualified success. Current uses include optimization of drilling operations, storage and retrieval of well data and word processing of standard programs. As a result, overall drilling costs, problems and manpower requirements have been lessened. This work discusses the computer system, its

W. F. Deerhake; F. Khalaf; J. A. Seehafer

1981-01-01

196

Offshore wind farm siting procedures applied offshore of Block Island, Rhode Island  

NASA Astrophysics Data System (ADS)

Since 2008, the Rhode Island Coastal Resources Management Council (CRMC) has been leading a Rhode Island Ocean Area Management Plan (RIOSAMP) in partnership with the University of Rhode Island, resulting in an extensive multidisciplinary analysis of the Rhode Island offshore environment and its suitability for siting an offshore wind farm. As part of the RIOSAMP project, a standard siting optimization approach was first developed based on a siting index defined as the ratio of costs associated with the wind farm deployment to the available wind resource. This index, combined within a marine spatial planning approach to address ecological and societal constraints, provided an initial macro-siting tool (Spaulding et al., 2010). The multiple GIS layers required in this approach and the absence of theoretical support to optimize the resulting zoning, led to an extension of the initial optimization approach into a more comprehensive macro-siting optimization tool, integrating societal and ecological constraints into the siting tool, the Wind Farm Siting Index (WIFSI) (Grilli et al, 2012). The projects led to the definition of several favorable development areas including a Renewable Energy Zone (REZ) off of Block Island, in State Waters. Deep Water Wind Inc. (DWW) plans to install and commission five 6 MW direct drive Siemens lattice jacket turbines in the REZ area, by 2014. In this thesis two major steps are accomplished to refine and expand the RIOSAMP macro-siting tool. First the macro-siting tool is expanded to include a model simulating the exclusionary zones defined by the Federal Aviation Administration (FAA) regulations. Second a micro-siting model is developed, optimizing the relative position of each turbine within a wind farm area. The micro-siting objective is to minimize, (1) the loss in power due to the loss of wind resource in the wake of the turbines (wake "effect"), and (2) the cable costs that inter-connect the turbines and connecting the farm to the land. The REZ area is chosen as test site for the algorithm, and an optimal layout for the 5 turbines is found and discussed. Similarly the FAA tool is applied to the Block Island airport demonstrating the complexity of the FAA exclusionary area, and defining the limits of the exclusionary areas. The FAA regulation model is a geometric model in which all major (FAA) regulations within RI and the RI topography are embedded. The user specifies the dimension of the proposed turbines and an airport of interest, and a map of exclusionary zones specific to the turbine height and rules applying to the airport is generated. The model is validated for the entire state of Rhode Island. The micro-siting model finds the optimum placement of each turbine for a given number of turbines within an area. It includes the aerodynamic constraints (loss in wind speed within the wake of a turbine) associated to the deployment of arrays of turbines and the cable interconnection cost. It is combined with the technical, ecological, and social constraints used in the RIOSAMP macro-siting tool to provide a comprehensive micro-siting tool. In the optimization algorithm, a simple wake model and turbine-clustering algorithm are combined with the WIFSI in an objective function; the objective function is optimized with a genetic algorithm (GA).

O'Reilly, Christopher M.

197

THE GULF OF MEXICO OFFSHORE AQUACULTURE CONSORTIUM1  

Microsoft Academic Search

Marine aquaculture may be classified into four categories according to the degree of protection afforded to the operation by the site characteristics: land-based operations; coastal, protected aquaculture; coastal, exposed aquaculture; and, offshore aquaculture. Offshore operations have all the logistical challenges of both remote coastal and exposed aquaculture but at an escalated scale. In 1999, the Gulf of Mexico Offshore Aquaculture

Christopher J. Bridger

198

CHAPTER 4 ENGINEERING REQUIREMENTS & LOGISTIC ALLEVIATION FOR OFFSHORE AQUACULTURE1  

Microsoft Academic Search

Offshore aquaculture—operating out of the sight of land—will have the logistic requirements associated with near shore operations, plus a new set of issues associated with the higher energy of the site and increased distance from shore. The Gulf of Mexico Offshore Aquaculture Consortium has been confronted by these challenges and has developed a suite of components to manage offshore aquaculture

Christopher J. Bridger; Clifford A. Goudey

199

Offshore Aquaculture: The Frontier of Redefining Oceanic Property  

Microsoft Academic Search

Over the past decade, offshore aquaculture has gained significant momentum as a global and, in particular, a U.S. seafood development strategy. Issues surrounding property rights, environmental impacts, and the social desirability of offshore aquaculture are inadequately addressed by policymakers and aquaculture specialists. This review essay describes offshore aquaculture's place in the development of industrial fish farming and the policy issues

Michael Skladany; Rebecca Clausen; Ben Belton

2007-01-01

200

77 FR 63849 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF HOMELAND SECURITY Coast Guard...National Offshore Safety Advisory Committee...National Offshore Safety Advisory Committee...issues related to safety of operations...gas offshore industry. These meetings...Hobby Airport Hotel, 9100 Gulf Freeway...Department of Homeland Security'' and...

2012-10-17

201

78 FR 18614 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013, 2014

...DEPARTMENT OF HOMELAND SECURITY Coast Guard...National Offshore Safety Advisory Committee...National Offshore Safety Advisory Committee...issues related to safety of operations...gas offshore industry. These meetings...Baronne Plaza Hotel, 201 Baronne...Department of Homeland Security'' and...

2013-03-27

202

Study on RMB offshore financial market of Hong Kong  

Microsoft Academic Search

It is essential to develop RMB offshore financial market in the process of promoting RMB internationalization. Hong Kong becomes the perfect place for constructing RMB offshore financial market due to its natural geography, developed busi- ness, strong infrastructure, a perfect system and other advan- tages. At present, the basic architecture of RMB offshore finan- cial market in Hong Kong has

Hongliang Wang

2011-01-01

203

ForPeerReview PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER  

E-print Network

ForPeerReview PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER PROJECTS IN THE UNITED STATES Journal: Wind, Andrew; Minerals Management Service Keywords: offshore wind power, public opinion, social acceptancePeerReview 1 PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER PROJECTS IN THE UNITED STATES Jeremy Firestone*, Willett

Firestone, Jeremy

204

Offshore Wind Turbines - Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine: Environmental Effects of Offshore Wind Energy Development  

Microsoft Academic Search

Deep C Wind, a consortium headed by the University of Maine will test the first U.S. offshore wind platforms in 2012. In advance of final siting and permitting of the test turbines off Monhegan Island, residents of the island off Maine require reassurance that the noise levels from the test turbines will not disturb them. Pacific Northwest National Laboratory, at

Pamela M. Aker; Anthony M. Jones; Andrea E. Copping

2010-01-01

205

United States Offshore Wind Resource Assessment  

NASA Astrophysics Data System (ADS)

The utilization of the offshore wind resource will be necessary if the United States is to meet the goal of having 20% of its electricity generated by wind power because many of the electrical load centers in the country are located along the coastlines. The United States Department of Energy, through its National Renewable Energy Laboratory (NREL), has supported an ongoing project to assess the wind resource for the offshore regions of the contiguous United States including the Great Lakes. Final offshore maps with a horizontal resolution of 200 meters (m) have been completed for Texas, Louisiana, Georgia, northern New England, and the Great Lakes. The ocean wind resource maps extend from the coastline to 50 nautical miles (nm) offshore. The Great Lake maps show the resource for all of the individual lakes. These maps depict the wind resource at 50 m above the water as classes of wind power density. Class 1 represents the lowest available wind resource, while Class 7 is the highest resource. Areas with Class 5 and higher wind resource can be economical for offshore project development. As offshore wind turbine technology improves, areas with Class 4 and higher resource should become economically viable. The wind resource maps are generated using output from a modified numerical weather prediction model combined with a wind flow model. The preliminary modeling is performed by AWS Truewind under subcontract to NREL. The preliminary model estimates are sent to NREL to be validated. NREL validates the preliminary estimates by comparing 50 m model data to available measurements that are extrapolated to 50 m. The validation results are used to modify the preliminary map and produce the final resource map. The sources of offshore wind measurement data include buoys, automated stations, lighthouses, and satellite- derived ocean wind speed data. The wind electric potential is represented as Megawatts (MW) of potential installed capacity and is based on the square kilometers (sq. km) of Class 5 and higher wind resource found in a specific region. NREL uses a factor of 5 MW of installed capacity per sq. km of "windy water" for its raw electric potential calculations. NREL uses Geographic Information System data to break down the offshore wind potential by state, water depth, and distance from shore. The wind potential estimates are based on the updated maps, and on previous offshore resource information for regions where new maps are not available. The estimates are updated as new maps are completed. For example, the updated Texas offshore map shows almost 3000 sq. km of Class 5 resource within 10 nm of shore and nearly 2000 sq. km of Class 5 resource or 10,000 MW of potential installed capacity in water depths of less than 30 m. NREL plans to develop exclusion criteria to further refine the offshore wind potential

Schwartz, M.; Haymes, S.; Heimiller, D.

2008-12-01

206

Competitive Bidding for Offshore Petroleum Leases  

Microsoft Academic Search

This paper develops a formal model of competitive bidding to analyze some aspects of the federal offshore oil leasing system. The lease sales of interest are often characterized by small numbers of auction participants and by high levels of uncertainty regarding the true values of the leases offered. The model suggests that these circumstances may lead to the capture of

Douglas K. Reece

1978-01-01

207

CHOOSING OFFSHORE PIPELINE ROUTES: PROBLEMS AND SOLUTIONS  

EPA Science Inventory

The report discusses the environmental and fisheries problems associated with offshore pipelines. The report focuses on how these problems can be addressed during the pipeline planning and route selection process. Geologic hazards are highlighted as the major factors related to p...

208

MFR PAPER 1179 Offshore Headboat Fishing in  

E-print Network

MFR PAPER 1179 Offshore Headboat Fishing in North Carolina and South Carolina GENE R. HUNTSMAN ABSTRACT-Headboats operating on the outer Continental Shelf of North Carolina and South Carolina made Carolina and South Carolina1 . Despite the northerly latitude of this fishery, it produces large catches

209

Sea Stars Underwater Offshore Northern California  

USGS Multimedia Gallery

Three sea stars on a rock, surrounded by a sandy seafloor littered with broken shells. Each sea star is approx. 10 - 15 cm (4-6 inches) across. Image acquired 4.5 km (3 miles) offshore Pigeon Point, southern San Mateo County, California at a depth of 52 meters....

210

Fish Swimming Underwater Offshore Northern California  

USGS Multimedia Gallery

A kelp greenling fish swimming above a seafloor of mixed gravel, cobble and rock outcrop with scattered shell. Fish is approx. 20 cm (8 inches) long. Image acquired 1 km (0.62 miles) offshore Half Moon Bay, California at a depth of 14 meters (46 ft). Also in the image are encrusting sponge...

211

Offshore mussel aquaculture: new or just renewed?  

Microsoft Academic Search

The increase on the demand for marine products and the decrease of the wild marine population has led to the culturing of several marine species. Within the molluscs the mussel is the second largest product by volume of marine aquaculture. Mussels are an ideal species for culture in the open ocean, referred to as offshore aquaculture. Several different systems are

T. Lado-Insua; F. J. Ocampo; K. Moran

2009-01-01

212

Offshore Wind Power Farm Environmental Impact Assessment  

E-print Network

Horns Rev Offshore Wind Power Farm Environmental Impact Assessment on Water Quality #12;Prepared Design ApS 04.05.2000 #12;Bio/consult Side 3 Horns Rev. Environmental Impact Assessment. Water Quality ................................................................................................................................. 12 4.2. WATER QUALITY

213

Offshore Investments by Colleges Draw Scrutiny  

ERIC Educational Resources Information Center

Billions of dollars in untaxed, offshore investments by college endowments could be subject to taxation under a proposal being considered by the leaders of the U.S. Senate Finance Committee. The proposed change, which targets hedge funds, a popular investing strategy for many colleges, would affect the largest college endowments, including those…

Fain, Paul; Wolverton, Brad

2007-01-01

214

Gladden Pull-Apart Basin, offshore Belize  

Microsoft Academic Search

The junction of the American and Caribbean plates in Belize has created a complex structural setting for oil and gas exploration. Recent seismic offshore Belize has been used to identify three structural provinces, from west to east: a shallow thrust zone, a narrow upthrown wrench faulted zone and a deeper extensional basin, named the Gladden Pull-Apart Basin. Hydrocarbon leakage from

Morrice

1993-01-01

215

Accord near for offshore California oil shipments  

SciTech Connect

There are faint glimmers of hope again for offshore California operators. After more than a decade of often bitter strife over offshore oil and gas development and transportation issues, state officials and oil producers may be moving toward compromise solutions. One such solution may be forthcoming on offshore development. But the real change came with the turnabout of the California Coastal Commission (CCC), which last month approved a permit for interim tankering of crude from Point Arguello oil field in the Santa Barbara Channel to Los Angeles. The dispute over how to ship offshore California crude to market has dragged on since before Point Arguelo development plans were unveiled. The project's status has become a flashpoint in the U.S. debate over resource use and environmental concerns. The controversy flared anew in the wake of the 1989 Exxon Valdez tanker spill off Alaska, when CCC voided a Santa Barbara County permit for interim tankering, a move project operator Chevron Corp. linked to the Exxon Valdez accident. Faced with litigation, the state's economic devastation, and acrimonious debate over transporting California crude, Gov. Pete Wilson and other agencies approved the CCC permit. But there's a catch: A permanent pipeline must be built to handle full production within 3 years. The paper discusses permit concerns, the turnaround decision, the anger of environmental groups, and pipeline proposals.

Not Available

1993-02-15

216

Highwave off-shore energy hose  

Microsoft Academic Search

Many inshore wave energy collectors (WEC) concepts use wave energy to push water ashore to process it for energy conversion with turbines. An artificial reef design of floating HPDE pipe can be built in a harbor and installed offshore of the breaking waves in the near shore. The portable reef designed to mitigate shore erosion can serve as the shuttle

Gary Ross; A. Michael Weaver; Chris O'Connor

2011-01-01

217

Planning and evaluation parameters for offshore complexes  

NASA Technical Reports Server (NTRS)

Issues are presented for consideration in the planning and design of offshore artificial complexes. The construction of such complexes, their social, economic, and ecological impacts, and the legal-political-institutional environments within which their development could occur, are discussed. Planning, design, and construction of near-shore complexes located off the Mid-Atlantic coast of the United States is emphasized.

Sincoff, M. Z. (editor); Dajani, J. S. (editor)

1976-01-01

218

Rocky and Sandy Seafloor Offshore California  

USGS Multimedia Gallery

Image of ripples in sand, next to a rocky surface on the seafloor 2.5 km (1.5 miles) offshore San Mateo County, California at a depth of 24.6 meters (81 feet). The two red dots in the image (from lasers mounted on the camera and used as reference points) are 15 cm (6 inches) apa...

219

Hydrocarbon potential of offshore South Florida basin  

Microsoft Academic Search

The results of an extensive, detailed geologic and geophysical evaluation of the offshore South Florida basin show this area to have considerable hydrocarbon exploration potential. Geophysical mapping on six key horizons identified numerous structural closures at Dollar Bay through Bone Island mapping levels. Geologic evaluation indicated at least four viable potential reservoir horizons, including the Sunniland formation - the main

B. M. Faulkner; A. V. Applegate

1986-01-01

220

Multiple Offshore Bars and Standing Waves  

Microsoft Academic Search

Field measurements of multiple offshore bar spacing were compared to theory and wave measurements to corroborate the suggestion that bar formation and spacing are controlled by standing waves in the infragravity range (0.5-5 min). Theoretical and experimental studies predict the reflection of progressive waves from a shoreline as standing waves. Associated drift in the bottom boundary layer is expected to

Andrew D. Short

1975-01-01

221

How ARCO drills high-angle wells offshore Indonesia  

SciTech Connect

Atlantic Richfield Indonesia, Inc. (ARII) drilled and completed 28 high-angle wells since early 1986 in Bima, Papa and FF fields in the Offshore North West Java Sea (ONWJ) contract area. Early wells were drilled with conventional rotary bottomhole assemblies (BHAs); introduction of a steerable tool and MWD subsequently increased efficiency and reduced drilling costs. Both lignosulfonate and dispersed pac polymer muds have been used with good success. Cost to drill a high-angle well has been only marginally more than that of a 45[degree] directional well. Elimination of open hole logging and use of preperforated liners have reduced drilling costs by 10%. Production performance for wells has been higher than for vertical or low-angle wells. High-angle wells in Bima have outperformed offset vertical wells and are classified as a success. However, horizontal wells in Papa, which has a strong bottom-water drive, have not shown any improved recovery over conventional wells. The new well in FF field is still being evaluated. In this first of a two-part report, high-angle drilling operations including well planning, BHA selection, casing and mud programs, hole cleaning and logging are described. Specific wells in the Bima area are discussed as examples.

Tjondrodiputro, B.; Eddyarso, H.; Jones, K. (Atlantic Richfield Indonesia, Inc., Jakarta (Indonesia))

1993-03-01

222

New cost accounting models in measuring of library employees' performance  

Microsoft Academic Search

Purpose – The current article aims to give an overview of how the new cost accounting models, such as activity-based costing (ABC) and time-driven activity-based costing (TDABC) are researched and adapted by university libraries, focusing on the methods used for measuring work time allocation as well as on the strengths and weaknesses of both models. Design\\/methodology\\/approach – The data used

Kate-Riin Kont

2012-01-01

223

Mapping Seabird Sensitivity to Offshore Wind Farms  

PubMed Central

We present a Geographic Information System (GIS) tool, SeaMaST (Seabird Mapping and Sensitivity Tool), to provide evidence on the use of sea areas by seabirds and inshore waterbirds in English territorial waters, mapping their relative sensitivity to offshore wind farms. SeaMaST is a freely available evidence source for use by all connected to the offshore wind industry and will assist statutory agencies in assessing potential risks to seabird populations from planned developments. Data were compiled from offshore boat and aerial observer surveys spanning the period 1979–2012. The data were analysed using distance analysis and Density Surface Modelling to produce predicted bird densities across a grid covering English territorial waters at a resolution of 3 km×3 km. Coefficients of Variation were estimated for each grid cell density, as an indication of confidence in predictions. Offshore wind farm sensitivity scores were compiled for seabird species using English territorial waters. The comparative risks to each species of collision with turbines and displacement from operational turbines were reviewed and scored separately, and the scores were multiplied by the bird density estimates to produce relative sensitivity maps. The sensitivity maps reflected well the amassed distributions of the most sensitive species. SeaMaST is an important new tool for assessing potential impacts on seabird populations from offshore development at a time when multiple large areas of development are proposed which overlap with many seabird species’ ranges. It will inform marine spatial planning as well as identifying priority areas of sea usage by marine birds. Example SeaMaST outputs are presented. PMID:25210739

Bradbury, Gareth; Trinder, Mark; Furness, Bob; Banks, Alex N.; Caldow, Richard W. G.; Hume, Duncan

2014-01-01

224

Mapping seabird sensitivity to offshore wind farms.  

PubMed

We present a Geographic Information System (GIS) tool, SeaMaST (Seabird Mapping and Sensitivity Tool), to provide evidence on the use of sea areas by seabirds and inshore waterbirds in English territorial waters, mapping their relative sensitivity to offshore wind farms. SeaMaST is a freely available evidence source for use by all connected to the offshore wind industry and will assist statutory agencies in assessing potential risks to seabird populations from planned developments. Data were compiled from offshore boat and aerial observer surveys spanning the period 1979-2012. The data were analysed using distance analysis and Density Surface Modelling to produce predicted bird densities across a grid covering English territorial waters at a resolution of 3 km×3 km. Coefficients of Variation were estimated for each grid cell density, as an indication of confidence in predictions. Offshore wind farm sensitivity scores were compiled for seabird species using English territorial waters. The comparative risks to each species of collision with turbines and displacement from operational turbines were reviewed and scored separately, and the scores were multiplied by the bird density estimates to produce relative sensitivity maps. The sensitivity maps reflected well the amassed distributions of the most sensitive species. SeaMaST is an important new tool for assessing potential impacts on seabird populations from offshore development at a time when multiple large areas of development are proposed which overlap with many seabird species' ranges. It will inform marine spatial planning as well as identifying priority areas of sea usage by marine birds. Example SeaMaST outputs are presented. PMID:25210739

Bradbury, Gareth; Trinder, Mark; Furness, Bob; Banks, Alex N; Caldow, Richard W G; Hume, Duncan

2014-01-01

225

Activity-based management and traditional costing in tourist enterprises (a hotel implementation model)  

Microsoft Academic Search

Nowadays, Greece is a country blessed with many archeological monuments and sightseeing of great interest and we have to mention\\u000a the thousands of beaches and ideal places for tourism. Thus, one of the main sources of income is tourism. The growth of Tourist\\u000a Sector in Greece consists of well organized hotels and apartments similar to the best of the world.

Athanasios Vazakidis; Ioannis Karagiannis

2011-01-01

226

About offshore resource assessment with floating lidars with special respect to turbulence and extreme events  

NASA Astrophysics Data System (ADS)

Offshore resource assessment with lidars on floating platforms is a flexible and particularly cost-effective alternative to the conventional meteorological mast solution, that is considered as onshore state-of-the-art transferred to offshore sites, and may enable better and more complete wind resource assessments for the growing offshore wind sector. Wind lidar technology, and remote sensing in general, has already been proven to be a very promising technology for resource assessment and power performance testing onshore. For offshore applications and on floating platforms in particular, the motions from the floating base have to be considered in addition, affecting the wind measurements significantly and causing systematic measurement errors. We have studied the motions and the corresponding influences on lidar measurements generated by different possible offshore platforms – vessels or buoys – both in detailed simulations as well as first validation experiments. In addition to this, we have developed motion compensation algorithms that allow to correct the affected measurements and retrieve the undisturbed wind data. The motions considered and studied comprise rotations as well as translations in all six degrees of freedom. For the evaluation of the motion-affected and corrected wind data in this paper, special attention is paid to the measurement of turbulence as well as extreme wind events. The research question to be answered is if a lidar device placed on a floating platform is capable of measuring more or less the same statistics of extreme wind events as a fixed lidar device. Quantities to be investigated are: the turbulence intensity as well as the statistics of maximum wind speed values within a 10-min period, but also wind speed increments on different time scales. At this, obviously two issues are to be discussed – the influence of the lidar measurement principle on the recording of extreme wind events, and the additional impact of the superimposed motions of the floating platform.

Gottschall, J.; Wolken-Möhlmann, G.; Lange, B.

2014-12-01

227

Activity-Based Computing John Canny and Danyel Fisher  

E-print Network

Activity-Based Computing John Canny and Danyel Fisher Computer Science Division, UC Berkeley When working in shared physical spaces, individuals develop a rich sense of awareness. They gather and share information freely; they gain a sense of what others know which allows them to ask the right person for help

Abowd, Gregory D.

228

Activity-Based Intervention Practices in Special Education  

ERIC Educational Resources Information Center

Teaching practices in natural settings such as activity-based intervention (ABI) are suggested as alternatives to be used in effective early childhood education. As a multidisciplinary model, ABI consists of four components, which are choosing activities according to the child's interests; teaching generalizable goals embedded in routines and…

Ozen, Arzu; Ergenekon, Yasemin

2011-01-01

229

The effectiveness of 3-D marine systems as an exploration tool in the offshore Niger Delta  

SciTech Connect

From inception in 1984, three-dimensional (3-D) marine surveys have been used widely for field development where commercial hydrocarbons were known to exist in Nigeria. The high-trace density and full 3-D migration provide a data set that allows detailed interpretation of complex geologic structures and, in many cases, provides good stratigraphic information as well. The result has been better placement of development wells, making field development more efficient and cost effective. Previous application of the 3-d method (i.e., reconaissance 3-D) as an exploration tool in 1987 has demonstrated its effectiveness for predrilling detailing of prospects in offshore Niger Delta in a situation where a large volume of seismic data were acquired at relatively reduced unit costs. The technique involves acquiring data along a line every 200 m spacing, while interpretation in 3-D data processing is applied for subsequent 3-D migration. Based on pattern recognition of events on the input traces, the links are established to allow traces to be formed between input locations by comparing several attributes of events on neighboring traces. A case history example from the offshore Niger delta shows that the collection costs for the reconnaissance 3-D method are comparable to two-dimensional detailing based on similar line kilometer and time duration for the survey. A trade-off between cost and technical specifications can be programmed by focusing on the geologic objective. The technique brings the advantage of 3-D methods, but not their costs, to the exploration phase of the search for petroleum, and it is highly recommended for exploration in frontier areas, particularly the deep offshore of the Niger Delta.

Idowu, A.O. (Nigerian National Petroleum Corp., Lagos (Nigeria))

1993-09-01

230

Stability analysis of offshore wind farm and marine current farm  

NASA Astrophysics Data System (ADS)

Renewable energy has been playing an important role to meet power demand and 'Green Energy' market is getting bigger platform all over the world in the last few years. Due to massive increase in the prices of fossil fuels along with global warming issues, energy harvesting from renewable energy sources has received considerable interest, nowadays, where extensive researches are going on to ensure optimum use of renewable sources. In order to meet the increasing demand of electricity and power, integration of renewable energy is getting highest priorities around the world. Wind is one of the most top growing renewable energy resources and wind power market penetration is expected to reach 3.35 percent by 2013 from its present market of about 240 GW. A wind energy system is the most environmental friendly, cost effective and safe among all renewable energy resources available. Another promising form of renewable energy is ocean energy which covers 70 % of the earth. Ocean energy can be tapped from waves, tides and thermal elements. Offshore Wind farm (OWF) has already become very popular for large scale wind power integration with the onshore grid. Recently, marine current farm (MCF) is also showing good potential to become mainstream energy sources and already successfully commissioned in United Kingdom. However, squirrel cage induction generator (SCIG) has the stability problem similar to synchronous generator especially during fault location to restore the electromagnetic torque. Series dynamic braking resistor (SDBR) has been known as a useful mean to stabilize fixed speed wind generator system. On the other hand, doubly fed induction generator (DFIG) has the capability of coupling the control of active and reactive power and to provide necessary reactive power demand during grid fault conditions. Series dynamic braking resistor (SDBR) can also be employed with DFIG to limit the rotor over current. An integration of wind and tidal energy represents a new-trend for large electric energy production using offshore wind generators and marine current generators, respectively. Thus DFIG based offshore wind farm can be an economic solution to stabilize squirrel cage induction generator based marine current farm without installing any addition FACTS devices. This thesis first focuses on the stabilization of fixed speed IG based marine current farm using SDBR. Also stabilization of DFIG based variable speed wind farm utilizing SDBR is studied in this work. Finally a co-operative control strategy is proposed where DFIG is controlled in such a way that it can even provide necessary reactive power demand of induction generator, so that additional cost of FACTS devices can be avoided. In that way, the DFIGs of the offshore wind farm (OWF) will actively compensate the reactive power demand of adjacent IGs of the marine current farm (MCF) during grid fault. Detailed modeling and control scheme for the proposed system are demonstrated considering some realistic scenarios. The power system small signal stability analysis is also carried out by eigenvalue analysis for marine current generator topology, wind turbine generator topology and integrated topology. The relation between the modes and state variables are discussed in light of modal and sensitivity analyses. The results of theoretical analyses are verified by MATLAB/SIMULINK and laboratory standard power system simulator PSCAD/EMTDC.

Shawon, Mohammad Hasanuzzaman

231

Development of Fully Coupled Aeroelastic and Hydrodynamic Models for Offshore Wind Turbines: Preprint  

SciTech Connect

Aeroelastic simulation tools are routinely used to design and analyze onshore wind turbines, in order to obtain cost effective machines that achieve favorable performance while maintaining structural integrity. These tools employ sophisticated models of wind-inflow; aerodynamic, gravitational, and inertial loading of the rotor, nacelle, and tower; elastic effects within and between components; and mechanical actuation and electrical responses of the generator and of control and protection systems. For offshore wind turbines, additional models of the hydrodynamic loading in regular and irregular seas, the dynamic coupling between the support platform motions and wind turbine motions, and the dynamic characterization of mooring systems for compliant floating platforms are also important. Hydrodynamic loading includes contributions from hydrostatics, wave radiation, and wave scattering, including free surface memory effects. The integration of all of these models into comprehensive simulation tools, capable of modeling the fully coupled aeroelastic and hydrodynamic responses of floating offshore wind turbines, is presented.

Jonkman, J. M.; Sclavounos, P. D.

2006-01-01

232

Offshore Wind Guidance Document: Oceanography and Sediment Stability (Version 1) Development of a Conceptual Site Model.  

SciTech Connect

This guidance document provide s the reader with an overview of the key environmental considerations for a typical offshore wind coastal location and the tools to help guide the reader through a thoro ugh planning process. It will enable readers to identify the key coastal processes relevant to their offshore wind site and perform pertinent analysis to guide siting and layout design, with the goal of minimizing costs associated with planning, permitting , and long - ter m maintenance. The document highlight s site characterization and assessment techniques for evaluating spatial patterns of sediment dynamics in the vicinity of a wind farm under typical, extreme, and storm conditions. Finally, the document des cribe s the assimilation of all of this information into the conceptual site model (CSM) to aid the decision - making processes.

Roberts, Jesse D.; Jason Magalen; Craig Jones

2014-06-01

233

Technical considerations in converting jack-up drilling rigs to mobile offshore production units  

SciTech Connect

There is a growing need for converting jack-up drilling rigs to Mobile Offshore Production Units for early production, long-term testing and as a low cost reusable alternative to platforms for short life marginal fields. Installing process equipment on drilling rigs offers a unique set of challenges. These include new loads imposed upon the rig, storage of hydrocarbon liquids, gas venting and flaring, location of and installation of equipment, safety considerations and installation of pipeline risers. The specific technical challenge of converting jack-up rigs for Mobile Offshore Production Units (MOPU) is discussed with example solutions from two projects, one installed in Venezuela and one off the West Coast of Africa.

Duhon, R.D.; Kreider, G.J.; Barnes, J.E.

1995-12-31

234

Offshore stand-off oil spill monitoring using passive optical imaging  

NASA Astrophysics Data System (ADS)

We have recently implemented a dual-band optical imaging scheme for offshore stand-off oil spill monitoring using visible and long-wave-infrared (LWIR) cameras. Based on differences in intrinsic optical properties, the visible cameral provides daytime images and monitoring capability as if observed by human personnel. The LWIR camera provides both day and night monitoring capabilities based on additional thermal and emissivity contrasts. We have demonstrated the feasibility of such a scheme at various testing sites and under various ambient conditions. We have developed an analytical model to explain observed oil/water contrast. We also discuss limitations in the dual-band scheme using detection boundary analysis and experimental examples. We believe this scheme can provide robust and cost-effective offshore stand-off oil spill monitoring.

Shih, W.-C.; Andrews, A. B.; Clayton, Matthew

2009-05-01

235

New technology emphasizes international offshore effort  

SciTech Connect

While the offshore industry is focusing its major development efforts on the deeper waters of the US Gulf, West Africa and Brazil, technology has not stood still in the world`s many other established and frontier offshore development areas. These selected items drawn from contributions by UK companies and a major joint-venture development in Eastern Canada emphasize this effort. Included here are: (1) announcement of a major six-field, 3 Tcf gas development off Nova Scotia`s Sable Island and award of two drilling contracts; (2) a comprehensive study of mobile production units in the UK by Smith Rea Energy Analysts; (3) four applications of an option to high-pressure swivels on an FPSO with multiple subsea inlet lines; (4) a contract to supply a DC bus drive for 17 ESPs on Texaco`s Captain field; and (5) review of an environmental study of the Falkland Islands in preparation for exploration activity.

NONE

1997-07-01

236

Locating Microseism Sources in Offshore Southern California  

NASA Astrophysics Data System (ADS)

We use the broadband stations from the S. California network to locate the apparent origin of secondary microseisms energy (5-8 Hz band). The procedure is to grid the offshore region and using each grid point as the source point, predict the response of a Rayleigh wave at each station. These predicted waveforms are then correlated with the data over a time window that is typically a 1/2 hour in length and composited at the grid point. The length of the time window controls a tradeoff between the spatial-temporal resolution of the sources and the robustness on the image. The procedure is valid for multiple sources. This results show that during periods of high microseism activity the sources are distinct at several locations in a region approximately 50-100 km offshore. For an 11/09/2002 Southern Ocean storm, for example, two zones parallel to each other and perpendicular to the coast are imaged.

Tian, X.; Clayton, R. W.

2007-12-01

237

Perspectives of offshore geothermal energy in Italy  

NASA Astrophysics Data System (ADS)

Italy is the first European and world's fifth largest producer of geothermal energy for power generation which actually accounts for less than 2% of the total electricity production of the country. In this paper after a brief introduction to the basic elements of high-enthalpy geothermal systems, we discuss the potentialities represented by the submarine volcanoes of the South Tyrrhenian Sea. In particular we focus on Marsili Seamount which, according to the literature data, can be considered as a possible first offshore geothermal field; then we give a summary of the related exploitation pilot project that may lead to the realization of a 200MWe prototype power plant. Finally we discuss some economic aspects and the development perspectives of the offshore geothermal resource taking into account the Italian energy framework and Europe 2020 renewable energy target.

Armani, F. B.; Paltrinieri, D.

2013-06-01

238

The geotechnical centrifuge in offshore engineering  

SciTech Connect

One of the greatest needs in offshore geotechnical engineering is for large scale test measurements on which to calibrate design procedures. The geotechnical centrifuge offers at least a partial remedy. Because it allows one to properly simulate stresses, it is a legitimate, relatively inexpensive option to full scale field testing. As such it is a valuable technique and can be an excellent complement to laboratory tests, 1-g model tests and numerical analyses. However, it has not been widely used by industry even though the capability has existed for almost thirty years. This paper argues that this technology should gain acceptance beyond the research community. The paper presents an overview of centrifuge principles, philosophies of use, and limitations of the technique. For illustration, several actual applications of centrifuge testing for complex offshore problems are described. Results are shown to provide important insights into prototype behavior and to agree well with full scale measurements where these are available.

Murff, J.D.

1996-12-31

239

U.S. Balance-of-Station Cost Drivers and Sensitivities (Presentation)  

SciTech Connect

With balance-of-system (BOS) costs contributing up to 70% of the installed capital cost, it is fundamental to understanding the BOS costs for offshore wind projects as well as potential cost trends for larger offshore turbines. NREL developed a BOS model using project cost estimates developed by GL Garrad Hassan. Aspects of BOS covered include engineering and permitting, ports and staging, transportation and installation, vessels, foundations, and electrical. The data introduce new scaling relationships for each BOS component to estimate cost as a function of turbine parameters and size, project parameters and size, and soil type. Based on the new BOS model, an analysis to understand the non?turbine costs has been conducted. This analysis establishes a more robust baseline cost estimate, identifies the largest cost components of offshore wind project BOS, and explores the sensitivity of the levelized cost of energy to permutations in each BOS cost element. This presentation shows results from the model that illustrates the potential impact of turbine size and project size on the cost of energy from U.S. offshore wind plants.

Maples, B.

2012-10-01

240

Offshore distributional patterns of Hawaiian fish larvae  

Microsoft Academic Search

An analysis of ichthyoplankton samples based on relative abundance reveals pronounced inshore\\/offshore distributional gradients for most Hawaiian fish larvae. Larvae of pelagic bay species are found almost exclusively in semi-enclosed bays and estuaries. Larvae of pelagic neritic species are more or less uniformly distributed with distance from shore. The larvae of reef species with non-pelagic eggs are most abundant close

J. M. Leis; J. M. Miller

1976-01-01

241

Arctic and offshore research: Technology status report  

SciTech Connect

This report describes the state of technology relative to the production of oil and gas in the Arctic. It discusses the technical issues that warrant investigation, and focuses on the current Department of Energy supported activities. Major accomplishments during the last year include the following: The Arctic and Offshore Research Information System (AORIS) was planned with industry survey recommendations incorporated. It contains a directory of 85 Arctic databases, a bibliographic component of over 7,000 citations, and a data component of about 300 data sets on sea ice characteristics. Seven position, pressure, and temperature buoys were deployed on ice islands (up to 3 by 6 miles in size) drifting off Ellesmere Island. Ice island movement, as much as 340 miles southwest of the Ward Hunt Ice Shelf during the last 4 years, represents a potential hazard to Arctic offshore structures in the Alaskan Beaufort Sea. The redesigned Seafloor Earthquake Measurement System (SEMS II) was deployed near Shell's Ellen-Elly platforms, about 10 miles offshore of Long Beach, California. The SEMS monitored the July 1986 southern California earthquakes. This was the first time earthquakes were simultaneouslly monitored by sensors located on land, aboard offshore platforms, and beneath the seafloor. Sea spray ice bond shear strength to various structural and protective coatings has been determined. The polyethylene coating demonstrated the most potential for rapid shedding of spray ice by gravity loading. Measurements of temperatures and salinities were completed as part of a pilot test to (1) detect seasonal conditions at the water-seabed interface, and (2) determine how they influence permafrost growth in the coastal waters of the Beaufort Sea. The temperatures and computed freezing point data suggest that seasonal seabed freezing can occur most of the winter. 13 refs., 14 figs., 4 tabs.

Not Available

1988-01-01

242

CATHODIC PROTECTION RETROFIT OF AN OFFSHORE PIPELINE  

Microsoft Academic Search

Cathodic protection (CP) anodes and corrosion coating on two offshore pipelines were damaged during deep water installation. In-situ methods for deep-water inspection and repair of the pipelines` CP and coating systems were developed and used. High-pressure natural gas Pipeline. A design was 5.6 miles of 8.625 in. OD by 0.406 in. W.T. API SL, Grade X-42, seamless line pipe. Pipeline

Robert Winters; Alan Holk

1997-01-01

243

Offshore production riser with flexible connector  

SciTech Connect

A central pipe riser support structure is connected to an underwater offshore base member by means of a gimbal joint. Vertical flow lines run parallel to the central riser and are supported by support means connected thereto. The lowermost support of each flow line is formed by a guide sleeve allowing at most a 3/sup 0/ deviation between the central axis of the guide sleeve and the central axis of the flow line.

Blomsma, E.C.; Holtslag, P.T.

1981-06-16

244

Designing Australia's North West Shelf offshore pipeline  

SciTech Connect

Design studies for the offshore pipeline system for the North West Shelf project in Australia commenced in the early 1970s. The trunkline from the North Rankin A platform to shore has recently been completed as the first part of the offshore pipeline system for the North West Shelf project. This pipeline originates from the platform in a water depth of 125 m (410 ft), enters the mouth of Mermaid Sound, and terminates just south of Withnell Bay on the Burrup Peninsula, on the North West coastline of Western Australia. The pipeline is 1,016 mm (40 in.) in diameter and 134.2 km (83.4 miles) long. It will operate in two-phase flow, bringing both gas and condensate to an onshore plant near its landfall. A slugcatcher has been constructed within the plant to receive liquidhydrocarbon slugs from the pipeline. The trunkline to shore will initially serve only the one offshore platform and operate at about 25% of its capacity to supply the Western Australian domestic gas market. The domestic gas plant on the Burrup Peninsula is being constructed by Woodside to produce pipeline-quality gas for delivery to the State Energy Commission and condensate for shipment by coastal tankers.

Seymour, E.V.; Craze, D.J.; Ruinen, W.

1984-05-07

245

System of activity-based models for Portland, Oregon  

SciTech Connect

This report demonstrates that activity-based travel demand models are currently feasible and can replace traditional trip-based travel four-step demand models for urban areas. Travel decisions are part of a broader activity scheduling decision, and requires that one model the demand for activities as well as mobility. The objective of the research project was to emphasize development of a model system that captures the aspects of decision making while remaining applicable in the near term at the level of state and metropolitan planning organizations. The work indicates that activity-based modeling and forecasting is now feasible and can begin to replace the more traditional trip-based forecasting paradigm within MPOs in the United States. Further developments and improvements are possible in model estimation and application procedures. Future advancements in computing processing power will be important in allowing full power of the approach to be applied in practice.

NONE

1998-05-01

246

Live Cell Organelle-Specific Activity-Based Protein Profiling**  

PubMed Central

A multimodal acidic organelle targeting activity-based probe was developed to measure subcellular native enzymatic activity of cells by fluorescent microscopy and mass spectrometry. A cathepsin reactive warhead, conjugated to a weakly basic amine and a clickable alkyne, for subsequent appendage of a fluorophore or biotin reporter tag, accumulated in lysosomes as observed by Structured Illumination Microscopy (SIM) in J774 mouse macrophage cells. Analysis of in vivo labeled J774 by mass spectrometry showed that the probe was very selective for Cathepsins B and Z, two lysosomal cysteine proteases. Analysis of starvation-induced autophagy, a catabolic pathway involving lysosomes, showed a large increase in tagged protein number and an increase in cathepsin activity. Organelle targeting activity-based probes, enabled by fine-tuning of physicochemical features, holds great promise for characterizing enzyme activities in the myriad diseases implicated to subcellular locales, particularly the lysosome. PMID:24505022

Wiedner, Susan D.; Anderson, Lindsey N.; Sadler, Natalie C.; Chrisler, William B.; Kodali, Vamsi K.; Smith, Richard D.

2014-01-01

247

26th Annual offshore technology conference: 1994 Proceedings  

SciTech Connect

This conference represents the world's largest and most comprehensive technical conference and exhibition on offshore resource development. The four proceedings volumes have been separated by major areas of interest with this volume containing papers relative to design of offshore platforms and marine riser systems. Papers deal with design, installation, fabrication, transport systems, mooring devices, repair methods, and development of satellite production facilities. Case histories on various offshore oil and gas fills are discussed along with economics of some applications and designs.

Not Available

1994-01-01

248

Offshore Code Comparison Collaboration (OC3) for IEA Wind Task 23 Offshore Wind Technology and Deployment  

SciTech Connect

This final report for IEA Wind Task 23, Offshore Wind Energy Technology and Deployment, is made up of two separate reports, Subtask 1: Experience with Critical Deployment Issues and Subtask 2: Offshore Code Comparison Collaborative (OC3). Subtask 1 discusses ecological issues and regulation, electrical system integration, external conditions, and key conclusions for Subtask 1. Subtask 2 included here, is the larger of the two volumes and contains five chapters that cover background information and objectives of Subtask 2 and results from each of the four phases of the project.

Jonkman, J.; Musial, W.

2010-12-01

249

Operational Impacts of Large Deployments of Offshore Wind (Poster)  

SciTech Connect

The potential operational impact of deploying 54 GW of offshore wind in the United States was examined. The capacity was not evenly distributed; instead, it was concentrated in regions with better wind quality and close to load centers (Table 1). A statistical analysis of offshore wind power time series was used to assess the effect on the power system. The behavior of offshore wind resembled that of onshore wind, despite the former presenting higher capacity factors, more consistent power output across seasons, and higher variability levels. Thus, methods developed to manage onshore wind variability can be extended and applied to offshore wind.

Ibanez, E.; Heaney, M.

2014-10-01

250

The wind speed profile at offshore wind farm sites  

NASA Astrophysics Data System (ADS)

The first large offshore wind farms are in the planning phase in several countries in Europe. Their economic viability depends on the favourable wind conditions compared to sites on land. The higher energy yield has to compensate the additional installation and maintenance cost. For project planning and siting a reliable prediction of the wind resource is therefore crucial. For turbine design the wind shear of the marine surface layer is an important design parameter, especially since the growing rotor diameter makes turbines more vulnerable for spatial wind speed variations. Compared to land surfaces the roughness of water is very low. It is commonly described either as a constant (as in the wind resource estimation program WAsP) or by means of the Charnock approach, relating sea surface roughness and friction velocity. While this relation works well for the open oceans it has been found inappropriate for coastal areas where waves are not fully developed. Information about the wave field is needed to model the sea surface roughness more accurately (see e.g. Johnson et al. (1998)). The atmospheric stability differs greatly between land and water areas. It is more important offshore compared to land sites due to the low surface roughness of water. The main influence of the atmospheric stability is on the vertical momentum transport, which is reflected in the vertical wind speed profile. It is usually described with Monin-Obukhov similarity theory. However, other effects not described by this approach might also play an important role: For offshore flow the flow regime at coastal sites is affected by the land-sea discontinuity (Højstrup, 1999). An internal boundary layer develops at the coastline and an inhomogeneous flow field might develop in the coastal zone, especially in stable stratification (see e.g. (Smedman et al. (1997)) Recent data from the measurement at Rødsand, 10 km off the Danish coast in the Baltic Sea, include simultaneous wind and wave data from a 50 m meteorological mast and an acoustic sea bed mounted wave gauge. Wind speed and turbulence intensity profiles are modelled for the Rødsand site using different approaches for stability and roughness. Results are compared with the measured data. For the sea surface roughness the use of the Charnock equation leads to good results. Improvements from using a wave field dependent roughness description are found to be small. For stability induced influences on the profiles M-O-theory works well in the case of unstable stratification. For stable stratification large deviations are found. They can be explained qualitatively as flow regimes with a mixed layer close to the surface and a capping inversion. In such a flow the atmospheric stability is strongly dependent on height and Monin-Obukhov similarity theory fails. For the Rødsand measurement this flow regime has been found to have an important influence on the wind climatology of the site. A wind speed at hub height predicted from a lower measurement with conventional theory will be underestimated. Højstrup, J.: Vertical Extrapolation of Offshore Wind Profiles. Wind energy for the next millennium. Proceedings. 1999 European wind energy conference (EWEC '99), Nice (FR), 1-5 Mar 1999. Petersen, E.L.; Hjuler Jensen, P.; Rave, K.; Helm, P.; Ehmann, H. (eds.), (1999) p. 1220-1223 Smedman, A.-S., H. Bergström and B. Grisogono: Evolution of stable internal boundary layers over a cold sea. Journal of Geophysical Research 102(C1), (1997); pp.1091-1099. Johnson, H.K., J. Højstrup, H.J. Vested, &S.E. Larsen: On the Dependence of Sea Surface Roughness on Wind Waves. Journal of Physical Oceanography. Vol.28 (1998) p. 1702-1716

Lange, B.; Larsen, S. E.; Højstrup, J.; Barthelmie, R.

2003-04-01

251

Full Costing of Business Programs: Benefits and Caveats  

ERIC Educational Resources Information Center

Purpose: To suggest an approach to program costing that includes the approaches and concepts developed in activity based costing. Design/methodology/approach: The paper utilizes a hypothetical case study of an Executive MBA program as a means of illustrating the suggested approach to costing. Findings: The paper illustrates both the benefits of…

Simmons, Cynthia; Wright, Michael; Jones, Vernon

2006-01-01

252

77 FR 75187 - Notice of Determination of No Competitive Interest, Offshore Maine  

Federal Register 2010, 2011, 2012, 2013, 2014

...Determination of No Competitive Interest, Offshore Maine AGENCY: Bureau of Ocean Energy Management...Proposed Commercial Wind Lease Offshore Maine...Outer Continental Shelf (OCS) Offshore Maine, Request for Interest (RFI), that...

2012-12-19

253

75 FR 29397 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013, 2014

...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling By the authority...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the ``Commission...and mitigating the impact of, oil spills associated with offshore...

2010-05-26

254

33 CFR 100.728 - Special Local Regulations; Hurricane Offshore Classic, St. Petersburg, FL.  

Code of Federal Regulations, 2013 CFR

... false Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...100.728 Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...All vessel traffic, not involved in the Hurricane Offshore Classic, entering...

2013-07-01

255

33 CFR 100.728 - Special Local Regulations; Hurricane Offshore Classic, St. Petersburg, FL.  

Code of Federal Regulations, 2011 CFR

... false Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...100.728 Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...All vessel traffic, not involved in the Hurricane Offshore Classic, entering...

2011-07-01

256

33 CFR 100.728 - Special Local Regulations; Hurricane Offshore Classic, St. Petersburg, FL.  

Code of Federal Regulations, 2014 CFR

... false Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...100.728 Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...All vessel traffic, not involved in the Hurricane Offshore Classic, entering...

2014-07-01

257

33 CFR 100.728 - Special Local Regulations; Hurricane Offshore Classic, St. Petersburg, FL.  

Code of Federal Regulations, 2012 CFR

... false Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...100.728 Special Local Regulations; Hurricane Offshore Classic, St. Petersburg...All vessel traffic, not involved in the Hurricane Offshore Classic, entering...

2012-07-01

258

Offshore Wind Turbines - Estimated Noise from Offshore Wind Turbine, Monhegan Island, Maine: Environmental Effects of Offshore Wind Energy Development  

SciTech Connect

Deep C Wind, a consortium headed by the University of Maine will test the first U.S. offshore wind platforms in 2012. In advance of final siting and permitting of the test turbines off Monhegan Island, residents of the island off Maine require reassurance that the noise levels from the test turbines will not disturb them. Pacific Northwest National Laboratory, at the request of the University of Maine, and with the support of the U.S. Department of Energy Wind Program, modeled the acoustic output of the planned test turbines.

Aker, Pamela M.; Jones, Anthony M.; Copping, Andrea E.

2010-11-23

259

Four essays on offshore wind power potential, development, regulatory framework, and integration  

NASA Astrophysics Data System (ADS)

Offshore wind power is an energy resource whose potential in the US has been recognized only recently. There is now growing interest among the coastal states to harness the resource, particularly in states adjacent to the Mid-Atlantic Bight where the shallow continental shelf allows installation of wind turbines using the existing foundation technology. But the promise of bountiful clean energy from offshore wind could be delayed or forestalled due to policy and regulatory challenges. This dissertation is an effort to identify and address some of the important challenges. Focusing on Delaware as a case study it calculates the extent of the wind resource; considers one means to facilitate resource development---the establishment of statewide and regional public power authorities; analyzes possible regulatory frameworks to manage the resource in state-controlled waters; and assesses the use of distributed storage to manage intermittent output from wind turbines. In order to cover a diversity of topics, this research uses a multi-paper format with four essays forming the body of work. The first essay lays out an accessible methodology to calculate offshore wind resource potential using publicly available data, and uses this methodology to access wind resources off Delaware. The assessment suggests a wind resource approximately four times the average electrical load in Delaware. The second essay examines the potential role of a power authority, a quasi-public institution, in lowering the cost of capital, reducing financial risk of developing and operating a wind farm, and enhancing regional collaboration on resource development and management issues. The analysis suggests that a power authority can lower the cost of offshore wind power by as much as 1/3, thereby preserving the ability to pursue cost-competitive development even if the current federal incentives are removed. The third essay addresses the existing regulatory void in state-controlled waters of Delaware. It outlines a regulatory framework touching on key elements such as the leasing system, length of tenure, and financial terms for allocating property rights. In addition, the framework also provides recommendations on environmental assessment that would be required prior to lease issuance. The fourth essay analyzes offshore wind power integration using electric thermal storage in housing units. It presents a model of wind generation, heating load and wind driven thermal storage to assess the potential of storage to buffer wind intermittency. The analysis suggests that thermal load matches the seasonal excess of offshore wind during winter months, and that electric thermal storage could provide significant temporal, spatial, and cost advantages for balancing output from offshore wind generation, while also converting a major residential load (space heating) now met by fossil fuels to low carbon energy resources. Together, the four essays provide new analyses of policy, regulatory, and system integration issues that could impede resource development, and also analyze and recommend strategies to manage these issues.

Dhanju, Amardeep

260

Proceedings of the 25th annual offshore technology conference. Volume 1: Geology, earth sciences and environment  

SciTech Connect

This conference proceedings represents volume 1 of a 4 volume conference relating to offshore operations in both energy and non-energy fields of resource development. This volume discusses the use of geophysical surveying techniques and equipment for mapping the seafloor; the design and use of offshore platforms; safety engineering systems; interpretation techniques for offshore survey data; environmental impacts from offshore operations; geology of offshore areas; and regulations pertaining to the development of offshore resources.

Not Available

1993-01-01

261

The offshore-ring: A new system design for the open ocean aquaculture of macroalgae  

Microsoft Academic Search

Mass culture of benthic macroalgae under rough offshore conditions in the North Sea requires rigid culture support systems that cannot only withstand rough weather conditions but can also be effectively handled while at the same time retain the cultured species. Various carrier constructions and different mooring systems were tested. Laminaria saccharina grew on all of these carriers with initially high

Bela Hieronymus Buck; Cornelia Maria Buchholz

2004-01-01

262

BIO-OFFSHORE: Grootschalige teelt van zeewieren in combinatie met offshore windparken in de Noordzee  

Microsoft Academic Search

This study addresses the technological feasibility of seaweed cultivation in the North Sea in combination with offshore wind parks and harvesting and conversion of seaweed biomass to renewable energy carriers and chemicals. The study also identifies stakeholders and participants for technology development and the ecological and societal conditions to fit in large-scale seaweed cultivation in the marine environment, existing marine

E. H. Reith; E. P. Deurwaarder; K. Hemmes; A. P. W. M. Curvers; P. Kamermans; W. A. Brandenburg; G. Lettings

2005-01-01

263

About Hercules Offshore Headquartered in Houston, Texas, Hercules Offshore serves the oil and  

E-print Network

provides shallow-water drilling and support services to the oil and gas industry. The company serves national oil and gas companies, major integrated energy companies and natural gas operators. Shallow-water, Hercules Offshore was faced with a need to upgrade. The company had customized the original Oracle

Fisher, Kathleen

264

Arctic and offshore research. Technology status report  

SciTech Connect

The DOE Arctic and Offshore Research (AOR) effort is designed to meet the needs for a centralized, high-quality, Arctic energy-related data base and for long-term, high-risk research. The ultimate purpose of the DOE effort is to promote extensive private use of the evolving AOR technology data base in order to accelerate development of Arctic oil and gas resources. In assessing the Arctic energy-related research needs as delineated in this report, the Morgantown Energy Technology Center (METC), with the DOE Fossil Energy Office of Oil, Gas, and Shale Technology, developed the following activities: AOR Energy-Related Technology Data Base Development; AOR Seminars and Workshops; Arctic and Offshore Energy Research Coordination; Sea Ice Research; Seafloor/Soils Research; and Subice Systems Development. The DOE AOR effort was initiated in FY 1983, the early development activities were performed in January and February 1983, and the effort evolved to its present form by the conclusion of FY 1984. The current activities have included determining the Arctic bibliographic data base and initiating most pieces of the research described above (except multiyear ice properties and pipeline research). Some of the FY 1984 major accomplishments are: four to five ice islands 1 to 2 miles in length drifting off the Ellesmere ice shelves north of Ellesmere Island were aerially surveyed. A report was completed on the location of the ice shelf edge, breakup, and regrowth of the Ellesmere ice shelves over the past two decades. Ice-ridging shear zone studies have shown that the 6- to 10-feet high shoals usually under the shear zone are not totally destroyed from ice gouging from one year to the next, but that the ice gouging may be instrumental in initiating and maintaining the shoals, which may protect Arctic offshore structures. Airborne radar sensing techniques were used to determine the electromagnetic properties of sea ice and physical properties.

Not Available

1984-10-01

265

Infrared inspection applied to offshore platforms: Petrobras experience at Campos Basin  

NASA Astrophysics Data System (ADS)

Bacia de Campos (Rio de Janeiro - Brazil) is one of the biggest offshore petroleum fields in the world today. In June 2001, Bacia de Campos, having more than 490 oil wells, 34 offshore platforms and 7 modified ships in operation, reached 1,3 million barrels/day. If compared to OPEP countries only nine of them got an average production higher than 1 million barrels/day in 2000, which means it can be placed on the 10th position in the rank of oil producers. In this context this work aims not only to show the results achieved within the introduction of thermographic inspections in offshore oil production (platforms and ships), but also the financial results (ROI - Return of Investment) considering the use of this particular technique. Bacia de Campos got a ROI around 7 million dollars in the last 4 years, which means a hundred times higher than the total cost of thermographic services in the same period. As far as we know this is one of the best results already reported in the world. We also present the methodology applied to analyze thermal anomalies in electrical components and data management software, including advanced Digital Reports sent via Internet.

Verdini, Edson A.; Veratti, Attilio B.

2002-03-01

266

Risk management in the North sea offshore industry: History, status and challenges  

NASA Astrophysics Data System (ADS)

There have been major changes in the UK and Norwegian offshore safety regimes in the last decade. On the basis of accumulated experience (including some major accidents), there has been a move away from a rigid, prescriptive approach to setting safety standards; it is now recognised that a more flexible, "goal-setting" approach is more suited to achieving cost-effective solutions to offshore safety. In order to adapt to this approach, offshore operators are increasingly using Quantitative Risk Assessment (QRA) techniques as part of their risk management programmes. Structured risk assessment can be used at all stages of a project life-cycle. In the design stages (concept and detailed design), these techniques are valuable tools in ensuring that money is wisely spent on safety-related systems. In the operational stage, QRA can aid the development of procedures. High quality Safety Management Systems (SMSs), covering issues such as training, inspection, and emergency planning, are crucial to maintain "asdesigned" levels of safety and reliability. Audits of SMSs should be carried out all through the operational phase to ensure that risky conditions do not accumulate.

Smith, E. J.

1995-10-01

267

Cathodic protection retrofit of an offshore pipeline  

SciTech Connect

Cathodic protection (CP) anodes and corrosion coating on two offshore pipelines were damaged during deep water installation. In-situ methods for deep-water inspection and repair of the pipelines` CP and coating systems were developed and used. High-pressure natural gas Pipeline. A design was 5.6 miles of 8.625 in. OD by 0.406 in. W.T. API SL, Grade X-42, seamless line pipe. Pipeline B design was 0.3 miles of similar specification pipe. Both pipelines were mill-coated with 14 mil of fusion-bonded epoxy (FBE) corrosion coating. Girth welds were field-coated with FBE.

Winters, R.H.; Holk, A.C. [Tenneco Energy, Houston, TX (United States)

1997-09-01

268

Unified design equation for offshore cathodic protection  

SciTech Connect

A new approach (the Unified Design Equation) is proposed for the design of sacrificial anode cathodic protection systems for offshore structures. This method results in a single design equation which incorporates both long term maintenance current density requirements and the use of high initial current density to achieve rapid polarization. The Unified Design Equation is compared to current design practice, to suggest values for the parameters useful for areas and conditions where historical designs are known to perform well. Under conditions where experience is lacking (e.g., new geographic areas, deep water, etc.) the design parameters can be determined experimentally.

Townley, D.W. [Chevron Petroleum Technology Co., La Habra, CA (United States)

1997-09-01

269

Trade Costs  

Microsoft Academic Search

This paper surveys the measurement of trade costs --- what we know, and what we don't know but may usefully attempt to find out. Partial and incomplete data on direct measures of costs go together with inference on implicit costs from trade flows and prices. Total trade costs in rich countries are large. The ad valorem tax equivalent is about

James E. Anderson; Eric van Wincoop

2004-01-01

270

Uses of motion imagery in activity-based intelligence  

NASA Astrophysics Data System (ADS)

Activity-Based Intelligence (ABI) was defined by the Office of the Undersecretary of Defense for Intelligence as "a discipline of intelligence where the analysis and subsequent collection is focused on activity and transactions associated with an entity, population, or area of interest." ABI is inherently multi-INT, and motion imagery is a rich data source for ABI analysis. Motion imagery provides a unique temporal aspect which is critical for activity detection and classification. Additionally, motion imagery tends to have high spatial oversampling useful for determining activities and patterns above the noise threshold.

Lash, Thomas D.

2013-05-01

271

Potential standards support for activity-based GeoINT  

NASA Astrophysics Data System (ADS)

The Motion Imagery Standards Board (MISB) is engaged in multiple initiatives that may provide support for Activity-Based GeoINT (ABG). This paper describes a suite of approaches based on previous MISB work on a standards-based architecture for tracking. It focuses on ABG in the context of standardized tracker results, and shows how the MISB tracker formulation can formalize important components of the ABG problem. The paper proposes a grammar-based formalism for the reporting of activities within a stream of FMV or wide-area surveillance data. Such a grammar would potentially provide an extensible descriptive language for ABG across the community.

Antonisse, Jim

2012-06-01

272

Technology assessment of offshore industry and its impact on the maritime industry 1976-2000. Executive summary. Final report  

Microsoft Academic Search

This report contains a 25 year forecast of the offshore industry including offshore petroleum production, offshore power production, offshore mining, offshore service platforms, and commercial ocean fishing. Each segment of the offshore industry is described in terms of the current status of industry, trends that might influence the direction of future development, and forces acting on the industry to impede

Durfee

1977-01-01

273

Integrated Dynamic Analysis of Floating Offshore Wind Turbines Bjrn Skaare*, Tor David Hanson*, Finn Gunnar Nielsen*, Rune Yttervik*, Anders Melchior Hansen**,  

E-print Network

are studied in [4] where structures that should float in water depth of about 50 m were considered. The main on the cost challenge, but is concluded that deep water floating support structure should be viableIntegrated Dynamic Analysis of Floating Offshore Wind Turbines Bjørn Skaare*, Tor David Hanson

274

Problem 65 in Section 4.1 (Page 274) Constructing a pipeline Supertankers off-load oil at a docking facility 4 mi offshore. The nearest refinery  

E-print Network

facility 4 mi offshore. The nearest refinery is 9 mi east of the shore point nearest the docking facility. A pipeline must be constructed connecting the docking facility with the refinery. The pipeline costs $300.42 miles away from the refinery, or equivalently 3.58 miles away from Point A (as the back of the book has

Schilling, Anne

275

Service Offshoring and Productivity: Evidence from the United States  

Microsoft Academic Search

The practice of sourcing service inputs from overseas suppliers has been growing in response to new technologies that have made it possible to trade in some business and computing services that were previously considered non-tradable. This paper estimates the effects of offshoring on productivity in US manufacturing industries between 1992 and 2000. It finds that service offshoring has a significant

Mary Amiti; Shang-Jin Wei

2006-01-01

276

Quality risk in offshore manufacturing: Evidence from the pharmaceutical industry  

Microsoft Academic Search

Does offshore production pose an added quality risk relative to domestic production? If so, what factors influence the quality risk? Progress addressing these deceptively simple questions has been hindered by the challenges associated with (1) difficulties in controlling for a wide range of factors that may potentially affect quality risk in offshore manufacturing and (2) the lack of available measures

John V. Gray; Aleda V. Roth; Michael J. Leiblein

2011-01-01

277

Map of Offshore Wind Energy Activity in North America  

NSDL National Science Digital Library

This map, from the North American Offshore Wind Project shows a Google map of all locations considered for having offshore wind energy. The location markers also provide information as to which projects are operational, proposed, suspended, or that have notable activity.

North American Offshore Wind Project

278

International Collaboration on Offshore Wind Energy Under IEA Annex XXIII  

SciTech Connect

This paper defines the purpose of IEA Annex XXIII, the International Collaboration on Offshore Wind Energy. This international collaboration through the International Energy Agency (IEA) is an efficient forum from which to advance the technical and environmental experiences collected from existing offshore wind energy projects, as well as the research necessary to advance future technology for deep-water wind energy technology.

Musial, W.; Butterfield, S.; Lemming, J.

2005-11-01

279

REVIEW Open Access Assessing environmental impacts of offshore wind  

E-print Network

targets and environmental legislation. Keywords: Marine mammals, Seabirds, Wind turbine, Underwater noise offshore wind farm, Horns Rev 1 (160 MW with 80 turbines of 2 MW), became operational in 2002. The aver- age capacity of turbines and size of offshore wind farms have been increasing since then

Aberdeen, University of

280

In Brief: Environmental standards needed for offshore marine aquaculture  

Microsoft Academic Search

The U.S. Congress should enact legislation that sets strong environmental standards for offshore marine aquaculture, the Marine Aquaculture Task Force recommended in a recent report. Aquaculture now accounts for about half of all seafood consumed in the world, and the industry is rapidly growing and expanding into regions offshore (more than 3 nautical miles from the coast) that are controlled

Sarah Zielinski

2007-01-01

281

OPTIMAL DEVELOPMENT PLANNING OF OFFSHORE OIL AND GAS FIELD  

E-print Network

OPTIMAL DEVELOPMENT PLANNING OF OFFSHORE OIL AND GAS FIELD INFRASTRUCTURE UNDER COMPLEX FISCAL Pittsburgh, PA 15213 Abstract The optimal development planning of offshore oil and gas fields has received, well drilling schedule and production profiles of oil, water and gas in each time period. The model can

Grossmann, Ignacio E.

282

26th Annual offshore technology conference: 1994 Proceedings  

SciTech Connect

This conference is the world's largest and most comprehensive technical conference and exhibition on offshore resource development. This conference is divided into four volumes with this volume containing conference papers relative to offshore drilling and well completion information. Papers also deal with construction specifications for marine risers and pipelines, along with any relevant installation and performance information.

Not Available

1994-01-01

283

Offshore Oil: Environmental Impacts on Land and Sea  

ERIC Educational Resources Information Center

Presents a counter position to that provided in SE 512 127 in which the author emphasizes that there are too many problems yet to be solved (related to offshore oil development) to proceed with full-scale development of offshore oil drilling. (PEB)

Baldwin, Pamela L.

1974-01-01

284

110. Offshore Business Process Outsourcing - Staying Competitive v Risk?  

Microsoft Academic Search

As the Information Systems Offshoring and Business Process Outsourcing (BPO) phenomena continue to grow and gain popularity, it is becoming increasingly evident that there is a need to consider a combination of the two, that is, Offshore BPO of IS Processes. This paper explores the factors that a multi-national organisation considered when it \\

Geoffrey Dick; Dubravka Cecez-Kecmanovic

285

ORIGINAL PAPER Review of Methodologies for Offshore Wind Resource  

E-print Network

installations are a comparatively small part of the wind turbine market. However, since 1999, large wind farms with wind turbines up to 5 MW have been erected offshore especially in the North Sea and Baltic Sea, iORIGINAL PAPER Review of Methodologies for Offshore Wind Resource Assessment in European Seas A. M

Pryor, Sara C.

286

Contracts in Offshore Software Development: An Empirical Analysis  

Microsoft Academic Search

e study the determinants of contract choice in offshore software development projects and examine how the choice of contract and other factors in the project affect project profits accruing to the software vendor.Using data collected on 93 offshore projects from a leading Indian software vendor, we provide evidence that specific vendor-, client-, and project-related characteristics such as requirement uncertainty, project

S. Krishnan

287

CHEMICAL COMPOSITION OF PRODUCED WATER AT SOME OFFSHORE OIL PLATFORMS  

EPA Science Inventory

The effectiveness of produced water treatment was briefly studied in offshore oil and gas extraction operations in Cook Inlet, Alaska, and the Gulf of Mexico. Three offshore oil extraction facilities were examined in the Cook Inlet production field, and seven platforms were studi...

288

FEED-IN TARIFFS AND OFFSHORE WIND POWER DEVELOPMENT  

E-print Network

FEED-IN TARIFFS AND OFFSHORE WIND POWER DEVELOPMENT Prepared by Jon Lilley, Blaise Sheridan, Dawn........................................................................................................................ 28 #12; 3 Feed-in Tariffs and Offshore Wind Power Development Prepared Pursuant to DOE Grant Em-Powering Center for Carbon-free Power Integration (CCPI) Final Report November 2010 Prepared under a grant (DE

Firestone, Jeremy

289

Offshore Wind Power Experiences, Potential and Key Issues for  

E-print Network

Offshore Wind Power Experiences, Potential and Key Issues for Deployment Jørgen Lemming, Poul Erik-Erik Clausen Title: Offshore Wind Power Experiences, Potential and Key Issues for Deployment Division: VEA, SYS Risø-R-1673(EN) January 2008 Abstract: Wind power has been growing at spectacular rates. Today

290

Foundation modelling to assess dynamic behaviour of offshore wind turbines  

Microsoft Academic Search

The dynamic behaviour of wind turbines at offshore locations is more complex than that of both onshore wind turbines and offshore platforms used in the oil and gas industry. In order to reduce the computational burden, the work presented in this paper aims at simplification of the dynamic model of the foundation, while maintaining sufficient accuracy. A stiffness matrix at

M. B. Zaaijer

2006-01-01

291

Wave Models for Offshore Wind Turbines Puneet Agarwal  

E-print Network

Wave Models for Offshore Wind Turbines Puneet Agarwal§ and Lance Manuely Department of Civil turbines--onshore or offshore--the prediction of extreme loads as- sociated with a target (long) return for such extrapolation are obtained by stochastic time- domain simulation of the inflow turbulence and of the turbine

Manuel, Lance

292

Wind Resource Mapping for United States Offshore Areas: Preprint  

SciTech Connect

The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) is producing validated wind resource maps for priority offshore regions of the United States. This report describes the methodology used to validate the maps and to build a Geographic Information Systems (GIS) database to classify the offshore wind resource by state, water depth, distance from shore, and administrative unit.

Elliott, D.; Schwartz, M.

2006-06-01

293

E2I EPRI Assessment Offshore Wave Energy Conversion Devices  

E-print Network

definition study in CY 2004. This study will produce system designs for wave energy conversion device powerE2I EPRI Assessment Offshore Wave Energy Conversion Devices Report: E2I EPRI WP ­ 004 ­ US ­ Rev 1 #12;E2I EPRI Assessment - Offshore Wave Energy Conversion Devices Table of Contents Introduction

294

Multiple-Module High-Gain High-Voltage DC–DC Transformers for Offshore Wind Energy Systems  

Microsoft Academic Search

Renewable energy sources, such as offshore wind farms, require high voltage gains in order to interface with power transmission networks. These conversions are normally made us- ing bulky, complex, and costly transformers and high-voltage ac- dc converters with unnecessary bidirectional power flow capability. Multiple modules of single-switch single-inductor dc- dc converters can reach high gains without transformers in these applications

Nicholas Denniston; Ahmed M. Massoud; Shehab Ahmed; Prasad N. Enjeti

2011-01-01

295

The Oil Debacle in the Gulf of Mexico: An Alternative to the Coming Flood of Offshore Regulations  

E-print Network

operators to provide insurance guaranteeing full liability coverage In a stroke of grim irony, just as the Obama Administration is relaxing restrictions on offshore oil drilling, comes the largest oil spill since the wreckage of the Exxon Valdez off... Congressional hearings, we can expect a spate of new regulations designed to avoid future spills. The simple truth is that the BP accident is an extremely low probability, extremely high cost event. According to the U.S. Department of Energy, there have...

Griffin, James M.

296

Fluid additive and specialized PDC bits improve ROP in offshore applications  

SciTech Connect

Improving drilling rates of penetration (ROP) has always been a concern of operators in the oil and gas industry. This concern is increasingly prevalent as costs associated with drilling in challenging offshore environments continue to rise, which increases the impact of ROP improvements on overall project economics. Factors such as drilling fluid, bit design, hydraulics, weight on bit, rotary speed and bit balling affect a well`s overall ROP. This article focuses on two of the factors: drilling fluid type and bit selection.

Jones, T.A.

1997-02-01

297

Cost-Effective Condition Monitoring for Wind Turbines  

Microsoft Academic Search

Cost-effective wind turbine (WT) condition monitoring assumes more importance as turbine sizes increase and they are placed in more remote locations, for example, offshore. Conventional condition monitoring techniques, such as vibration, lubrication oil, and generator current signal analysis, require the deployment of a variety of sensors and computationally intensive analysis techniques. This paper describes a WT condition monitoring technique that

Wenxian Yang; Peter J. Tavner; Christopher J. Crabtree; Michael Wilkinson

2010-01-01

298

Management of offshore wastes in the United States.  

SciTech Connect

During the process of finding and producing oil and gas in the offshore environment operators generate a variety of liquid and solid wastes. Some of these wastes are directly related to exploration and production activities (e.g., drilling wastes, produced water, treatment workover, and completion fluids) while other types of wastes are associated with human occupation of the offshore platforms (e.g., sanitary and domestic wastes, trash). Still other types of wastes can be considered generic industrial wastes (e.g., scrap metal and wood, wastes paints and chemicals, sand blasting residues). Finally, the offshore platforms themselves can be considered waste materials when their useful life span has been reached. Generally, offshore wastes are managed in one of three ways--onsite discharge, injection, or transportation to shore. This paper describes the regulatory requirements imposed by the government and the approaches used by offshore operators to manage and dispose of wastes in the US.

Veil, J. A.

1998-10-22

299

Ghana seeks to resume offshore production  

SciTech Connect

Ghana National Petroleum Corp. (GNPC) plans a two well offshore drilling program it hopes will lead to a resumption of hydrocarbon production in the West African state. The wells will be drilled in South Tano field in the extreme western sector of Ghana's offshore area, near the boundary with Ivory Coast. If the program is successful, the state company will develop a novel floating production system to handle and export oil. Gas will provide fuel for an electrical power generating unit integrated into a floating production system. Power will move ashore through a submarine cable. North and south Tano fields were discovered by Phillips Petroleum Corp., which relinquished the acreage in 1982. The South Tano discovery well flowed 1,614 b/d of oil and 8.2 MMCfd of gas. Studies by a unit of ARCO, when it was a partner in a group that later acquired the Tano block, pegged North Tano hydrocarbons in place at 53.6 million bbl of oil and 102 bcf of gas. Braspetro, under contract with GNPC, estimated South Tano hydrocarbons in place at 82 million bbl of oil and 100 bcf of gas. GNPC is evaluating the possibility of rehabilitating Saltpond oil field about 150 miles east-northeast of North and South Tano. Saltpond has been shut in since 1985.

Not Available

1991-06-17

300

Thermometric well testing on the Vietnam offshore  

SciTech Connect

It is impossible to control and adjust an oil and gas field development without determining the flow intervals of production wells. For that it is preferable to get production profiles by using the downhole flowmeter. There are, however, some main restrictions for wide-spread application of them on the offshore of Vietnam as follows: the flowmeter spinner velocity cannot indicate correctly in the open hole wells having a nonuniform diameter; it is unable to carry out in the case when the tubing shoe is lower than top formation on 300--500m. In this paper, the authors present a summary of temperature profile method to determine the flowing and intaking intervals of wells drilled in basement of the White Tiger Field on Vietnam offshore. For the last 2 years more than 30 wells were surveyed by this method in the above mentioned conditions. This paper presents the theory and practice of well temperature profile surveys, the concrete examples of data interpretation using the software Oiltest.

San, T.N.; Shtyrlin, V.F.; Vakhitov, G.G.; Loi, L.M.; Listengarten, L.; Hien, D.L.

1994-12-31

301

The effect of activity-based financing on hospital length of stay for elderly patients suffering from heart diseases in Norway  

PubMed Central

Background Whether activity-based financing of hospitals creates incentives to treat more patients and to reduce the length of each hospital stay is an empirical question that needs investigation. This paper examines how the level of the activity-based component in the financing system of Norwegian hospitals influences the average length of hospital stays for elderly patients suffering from ischemic heart diseases. During the study period, the activity-based component changed several times due to political decisions at the national level. Methods The repeated cross-section data were extracted from the Norwegian Patient Register in the period from 2000 to 2007, and included patients with angina pectoris, congestive heart failure, and myocardial infarction. Data were analysed with a log-linear regression model at the individual level. Results The results show a significant, negative association between the level of activity-based financing and length of hospital stays for elderly patients who were suffering from ischemic heart diseases. The effect is small, but an increase of 10 percentage points in the activity-based component reduced the average length of each hospital stay by 1.28%. Conclusions In a combined financing system such as the one prevailing in Norway, hospitals appear to respond to economic incentives, but the effect of their responses on inpatient cost is relatively meagre. Our results indicate that hospitals still need to discuss guidelines for reducing hospitalisation costs and for increasing hospital activity in terms of number of patients and efficiency. PMID:23651910

2013-01-01

302

Washing ashore: The politics of offshore oil in northern Angola  

NASA Astrophysics Data System (ADS)

This dissertation examines the political ecology of Angolan oil, by exploring state and corporate political economies; historical convergences of violence and capital; and struggles over the costs and benefits of oil production from the perspective of artisanal fishing and farming communities in the extractive zones. Angola is sub-Saharan Africa's second-largest oil producer but revenues from the enclave sector in oil rarely trickle down to the impoverished populace. The Angolan government strategically invests petrodollars in patronage networks to bolster their power; and watchdog agencies claim top officials divert the balance to offshore accounts. While the enclaved nature of production facilitates the restricted distribution of oil monies by concentrating services and revenue streams, the distortions and externalities that bleed out from these enclaves increase the misery of Angolans---especially those living in the extractive zones. By focusing on the lived experience of extraction, I explore the politics of oil through the forms of violence and degradation threatening the lives and livelihoods of local people. Most of Angola's oil is produced from offshore fields, so oil spills present a considerable risk to the health of local communities and ecosystems. The fishers and fish traders suffering from oil spills demand compensation from the liable oil corporations, yet the skewed system of disbursements only reaches the most powerful claimants. Moreover, faced with a repressive and unresponsive government, communities in extractive zones have come to rely on the same corporations for schools and health posts in a system I refer to as oil-backed development. I demonstrate that local histories of violence, national political exigencies, and transnational corporate interests govern the distribution of oil-backed development projects. Furthermore, I argue that the Angolan government leverages corporate donations for development to suit its own exclusionary interests and to gain control over dissidents and resources. In this way, oil-backed development complements more militant forms of territorialization while maintaining the exclusionary institutions and corrupt leadership that deprive Angolans of a fair share of the country's resource wealth.

Reed, Kristin Michelle

303

2011 Cost of Wind Energy Review  

SciTech Connect

This report describes the levelized cost of energy (LCOE) for a typical land-based wind turbine installed in the United States in 2011, as well as the modeled LCOE for a fixed-bottom offshore wind turbine installed in the United States in 2011. Each of the four major components of the LCOE equation are explained in detail, such as installed capital cost, annual energy production, annual operating expenses, and financing, and including sensitivity ranges that show how each component can affect LCOE. These LCOE calculations are used for planning and other purposes by the U.S. Department of Energy's Wind Program.

Tegen, S.; Lantz, E.; Hand, M.; Maples, B.; Smith, A.; Schwabe, P.

2013-03-01

304

Geospatial characteristics of Florida's coastal and offshore environments: Administrative and political boundaries and offshore sand resources  

USGS Publications Warehouse

The Geospatial Characteristics Geopdf of Florida's Coastal and Offshore Environments is a comprehensive collection of geospatial data describing the political and natural resources of Florida. This interactive map provides spatial information on bathymetry, sand resources, military areas, marine protected areas, cultural resources, locations of submerged cables, and shipping routes. The map should be useful to coastal resource managers and others interested in the administrative and political boundaries of Florida's coastal and offshore region. In particular, as oil and gas explorations continue to expand, the map may be used to explore information regarding sensitive areas and resources in the State of Florida. Users of this geospatial database will find that they have access to synthesized information in a variety of scientific disciplines concerning Florida's coastal zone. This powerful tool provides a one-stop assembly of data that can be tailored to fit the needs of many natural resource managers.

Demopoulos, Amanda W.J.; Foster, Ann M.; Jones, Michal L.; Gualtieri, Daniel J.

2011-01-01

305

Tracking Costs  

ERIC Educational Resources Information Center

Even though there's been a slight reprieve in energy costs, the reality is that the cost of non-renewable energy is increasing, and state education budgets are shrinking. One way to keep energy and operations costs from overshadowing education budgets is to develop a 10-year energy audit plan to eliminate waste. First, facility managers should…

Erickson, Paul W.

2010-01-01

306

Quantifying the hurricane catastrophe risk to offshore wind power.  

PubMed

The U.S. Department of Energy has estimated that over 50 GW of offshore wind power will be required for the United States to generate 20% of its electricity from wind. Developers are actively planning offshore wind farms along the U.S. Atlantic and Gulf coasts and several leases have been signed for offshore sites. These planned projects are in areas that are sometimes struck by hurricanes. We present a method to estimate the catastrophe risk to offshore wind power using simulated hurricanes. Using this method, we estimate the fraction of offshore wind power simultaneously offline and the cumulative damage in a region. In Texas, the most vulnerable region we studied, 10% of offshore wind power could be offline simultaneously because of hurricane damage with a 100-year return period and 6% could be destroyed in any 10-year period. We also estimate the risks to single wind farms in four representative locations; we find the risks are significant but lower than those estimated in previously published results. Much of the hurricane risk to offshore wind turbines can be mitigated by designing turbines for higher maximum wind speeds, ensuring that turbine nacelles can turn quickly to track the wind direction even when grid power is lost, and building in areas with lower risk. PMID:23763387

Rose, Stephen; Jaramillo, Paulina; Small, Mitchell J; Apt, Jay

2013-12-01

307

On the Offshore Advection of Boundary-Layer Structures and the Influence on Offshore Wind Conditions  

NASA Astrophysics Data System (ADS)

The coastal discontinuity imposes strong signals to the atmospheric conditions over the sea that are important for wind-energy potential. Here, we provide a comprehensive investigation of the influence of the land-sea transition on wind conditions in the Baltic Sea using data from an offshore meteorological tower, data from a wind farm, and mesoscale model simulations. Results show a strong induced stable stratification when warm inland air flows over a colder sea. This stratification demonstrates a strong diurnal pattern and is most pronounced in spring when the land-sea temperature difference is greatest. The strength of the induced stratification is proportional to this parameter and inversely proportional to fetch. Extended periods of stable stratification lead to increased influence of inertial oscillations and increased frequency of low-level jets. Furthermore, heterogeneity in land-surface roughness along the coastline is found to produce pronounced horizontal streaks of reduced wind speeds that under stable stratification are advected several tens of kilometres over the sea. The intensity and length of the streaks dampen as atmospheric stability decreases. Increasing sea surface roughness leads to a deformation of these streaks with increasing fetch. Slight changes in wind direction shift the path of these advective streaks, which when passing through an offshore wind farm are found to produce large fluctuations in wind power. Implications of these coastline effects on the accurate modelling and forecasting of offshore wind conditions, as well as damage risk to the turbine, are discussed.

Dörenkämper, Martin; Optis, Michael; Monahan, Adam; Steinfeld, Gerald

2015-02-01

308

75 FR 418 - Certificate of Alternative Compliance for the Offshore Supply Vessel KELLY ANN CANDIES  

Federal Register 2010, 2011, 2012, 2013, 2014

...for the Offshore Supply Vessel KELLY ANN CANDIES AGENCY: Coast Guard, DHS. ACTION...for the offshore supply vessel KELLY ANN CANDIES as required by 33 U.S.C. 1605(c...Purpose The offshore supply vessel KELLY ANN CANDIES will be used for offshore supply...

2010-01-05

309

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with  

E-print Network

Time-domain Fatigue Response and Reliability Analysis of Offshore Wind Turbines with Emphasis of offshore wind turbines Defense: 09.12.2012 2012 - : Structural Engineer in Det Norske Veritas (DNV) 2007 and higher wind speed, and less visual disturbance and noise for offshore wind energy. Offshore wind

Nørvåg, Kjetil

310

Proceedings of OMAE2008: The 27th International Conference on Offshore Mechanics & Arctic Engineering  

E-print Network

instrumented several of them on a number of mobile offshore drilling units (MODUs) and offshore production integrity for offshore drilling risers. This effort has included in-situ, full- scale monitoring of drillingProceedings of OMAE2008: The 27th International Conference on Offshore Mechanics & Arctic

311

An Empirical Investigation of Client Managers’ Responsibilities in Managing Offshore Outsourcing of Software-Testing Projects  

Microsoft Academic Search

Despite an increase in the offshore outsourcing of in- formation technology (IT) projects, little research has been carried out to identify issues that client managers (CMs) encounter when managing projects with offshore vendors. Also research on how CMs' responsibilities change to effectively manage offshore out- sourcing relationships has received little attention. We conducted a case study of an offshore outsourcing

Radhika P. Jain; Robin S. Poston; Judith C. Simon

2011-01-01

312

Economic Integration, IT Intensity and the Aggregate Economic Impacts of IT Services Offshoring  

Microsoft Academic Search

This study examines the economic contributions of offshore IT outsourcing (or IT offshoring for short) by using an extended Cobb-Douglas production function, and a panel data set from 20 OECD countries over the 2000 to 2006 period. Our analysis indicates that IT offshoring has made a positive and significant contribution to national productivity. Previous research on IT offshoring has relied

Yen-Chun Chou; Robert J. Kauffman

2010-01-01

313

Offshore structure and method of sinking same  

SciTech Connect

An offshore structure and a method of skinking it to the sea bed. In accordance with one aspect of this invention, the structure is sunk asymmetrically by first sinking a first end portion thereof and then sinking the other end portion. The first end portion is sunk by ballasting it while the other end portion is closed to ballast. The structure is provided with sufficient water plane area while sinking each end portion to maintain stability during the sinking process. In accordance with another aspect of this invention, at least two spaced-apart piles are provided at the end corresponding to the first end portion to absorb the force of impact with the sea bed and to maintain a skirt on the structure out of contact with the sea bed until both ends of the structure have been sunk to the sea bed.

Fern, D. T.

1985-02-05

314

Recent advances in offshore pipeline technology  

SciTech Connect

Since the pioneering construction of the TRANSMED pipeline system across the Sicily Channel in the early 80`s, offshore pipeline technology has been progressing towards more and more difficult environments. Now the projects envisaged for the 90`s are venturing far beyond the challenges of the recent past. The scope of this paper is to present the recent research efforts aimed at tackling the main design aspects of the new challenges. Particular attention will be given to the experiences and achievements on the last few years in transmission pipelines across the European Continental Shelf, e.g. in the Central and Southern North Sea and across the Mediterranean Sea. Technologies, tools and purpose developed criteria will be discussed. The performance of current operating pipeline systems will be reviewed and incentives to rationalize design criteria and guidelines will be illustrated.

Bruschi, R.; Vitali, L. [Snamprogetti S.p.A., Fano (Italy)

1994-12-31

315

Elsam: Horns Rev Offshore Wind Farm  

NSDL National Science Digital Library

The Danish energy producing company Elsam is currently building "the world's largest offshore wind farm" in the North Sea. 80 turbines were erected over summer 2002, which was when the project began. The Horns Rev project is part of a long term plan for Denmark to reduce carbon dioxide emissions 50 percent by 2030. A monthly newsletter is published online with all of the developments and milestones accomplished. There is substantial material on the wind farm's construction. The specifications of the turbines are quite impressive. Analysis of wind speeds, water conditions, and other location specific data conveys the complexity of the design process. A description of the various stages of construction is also very interesting.

316

Environmental load uncertainties for offshore structures  

SciTech Connect

A methodology for assessing the effect of different sources of uncertainty on the calculation of load effect on offshore structures is presented. A consistent classification of uncertainties was adopted and used as a basis to develop models to estimate the effect of different uncertainties on specified design loads. It is shown that distribution parameter uncertainties arising from limitations on the quantity of statistical data are not likely to have a significant effect on design loads. By contrast, model uncertainties can greatly increase the design loads, and the increase is sensitive to the probabilistic models used to describe model error. The methodology and results can be used by design engineers to take model uncertainties into account in estimating specified loads. They also form the basis for developing and calibrating a new information-sensitive code format.

Nessim, M.A.; Hong, H.P. [Centre for Engineering Research Inc., Edmonton, Alberta (Canada); Jordaan, I.J. [Memorial Univ. of Newfoundland, St. John`s, Newfoundland (Canada). Faculty of Engineering and Applied Science

1995-11-01

317

Troll, Haltenpipe showcase offshore pipelay advances  

SciTech Connect

Pipelines installed on the Norwegian continental shelf represent current offshore pipeline installation technology for pipe size (up to 40 in.), water depth (to 540 m) distance between pigging stations (up to 800 km), and complex seabed intervention and landfall construction. Furthermore, the number of deepwater pipelines worldwide has triggered significant advances in the development of pipeline repair. The Troll oil pipeline and Haltenpipe projects faced technical challenges: irregular seabed, conditions requiring highly accurate mapping, careful routing, free-span design, seabed preparation works, and special low-tension lay techniques. The two projects, therefore, have in many ways benefited from each other and been run practically as one large integrated project. The paper describes the design, route preparation, and installation for both pipelines.

Blaker, F.; Gjertveit, E.; Breivik, J. [Den Norske Stats Oljeselskap a.s., Stavanger (Norway)

1996-07-29

318

Design, manufacturing and tests of first cryogen-free MgB2 prototype coils for offshore wind generators  

NASA Astrophysics Data System (ADS)

Although renewable sector has started to take advantage of the offshore wind energy recently, the development is very intense. Turbines reliability, size, and cost are key aspects for the wind industry, especially in marine locations. A superconducting generator will allow a significant reduction in terms of weight and size, but cost and reliability are two aspects to deal with. MgB2 wire is presented as one promising option to be used in superconducting coils for wind generators. This work shows the experimental results in first cryogen-free MgB2 prototype coils, designed according to specific requirements of TECNALIA's wind generator concept.

Sarmiento, G.; Sanz, S.; Pujana, A.; Merino, J. M.; Iturbe, R.; Apiñaniz, S.; Nardelli, D.; Marino, I.

2014-05-01

319

Assessment of Offshore Wind System Design, Safety, and Operation Standards  

SciTech Connect

This report is a deliverable for a project sponsored by the U.S. Department of Energy (DOE) entitled National Offshore Wind Energy Resource and Design Data Campaign -- Analysis and Collaboration (contract number DE-EE0005372; prime contractor -- AWS Truepower). The project objective is to supplement, facilitate, and enhance ongoing multiagency efforts to develop an integrated national offshore wind energy data network. The results of this initiative are intended to 1) produce a comprehensive definition of relevant met-ocean resource assets and needs and design standards, and 2) provide a basis for recommendations for meeting offshore wind energy industry data and design certification requirements.

Sirnivas, S.; Musial, W.; Bailey, B.; Filippelli, M.

2014-01-01

320

26th annual offshore technology conference, 1994 proceedings  

SciTech Connect

This conference is the world's largest and most comprehensive technical conference and exhibition on offshore resource development. The four Proceedings volumes have been separated by major areas of interest, with relative sessions included in each volume. This Volume 3 contains information relative to offshore platforms and marine system designs. It describes both the installation and decommissioning of offshore platforms, retrofitting platforms to meet current safety standards, and technology assessments for both drilling and platform designs. Papers are also provided which describe maintenance and repair technologies for damages to platform.

Not Available

1994-01-01

321

NREL Software Aids Offshore Wind Turbine Designs (Fact Sheet)  

SciTech Connect

NREL researchers are supporting offshore wind power development with computer models that allow detailed analyses of both fixed and floating offshore wind turbines. While existing computer-aided engineering (CAE) models can simulate the conditions and stresses that a land-based wind turbine experiences over its lifetime, offshore turbines require the additional considerations of variations in water depth, soil type, and wind and wave severity, which also necessitate the use of a variety of support-structure types. NREL's core wind CAE tool, FAST, models the additional effects of incident waves, sea currents, and the foundation dynamics of the support structures.

Not Available

2013-10-01

322

Mid-year report. [Review of offshore petroleum industry activity  

SciTech Connect

A mid-year review and forecast for the offshore energy focuses on the impact of energy prices, worldwide drilling, the market for marine transportation, the mobile rig market, the diving industry, construction prospects, and seismic activity. The price of oil is seen as the most influential factor affecting offshore programs being considered for the next 10 yr. The analysis of drilling data indicates the trend for offshore activity will continue to rise, notwithstanding the current rig activity statistics. The growing importance of remotely operated vehicles in the diving industry is noted.

Not Available

1983-05-01

323

A subsalt prospect in offshore Louisiana - evolution of a prospect from lease to present  

SciTech Connect

The Garnet subsalt prospect in the East Cameron, South Addition area of offshore Louisiana was acquired by Anadarko Petroleum Corporation in the 1994 offshore Louisiana federal lease sale. The prospect is a structural closure beneath a rugose and highly deformed allochthonous salt sheet. This salt geometry has distorted the seismic image below it, making necessary the use of more elaborate and costly seismic depth imaging techniques. The prospect is further complicated by the lack of proximate deep well control to aid in predicting stratigraphy below salt. In this paper, we present the progressive stages of prospect evaluation leading to the current interpretation, beginning first with the initial lease sale identification of the prospect. Through the various stages of evaluation, geophysical efforts have reflected an attempt to balance time and costs with the anticipated benefits. Seismic evaluation has progressed from various 2D methods through 3D time migration, 3D post-stack depth migration and ultimately to 3D pre-stack depth migration. The primary goal of the 3D pre-stack depth migration was to image below salt and considerable effort has been expended in deriving an accurate velocity model for the final depth migration. The improved imaging of the various salt bodies has produced a more accurate picture of the salt geometries and subsalt structures. From this, we have reconstructed the salt movement within the prospect area and have inferred salt tectonic and sedimentation interrelationships.

Zick, A.D.; Addis, D.J. (Anadarko Petroleum Corp., Houston, TX (United States)); Pieprazak, A.W. (Schlumberger Geco-Prakta, Houston, TX (United States))

1996-01-01

324

A subsalt prospect in offshore Louisiana - evolution of a prospect from lease to present  

SciTech Connect

The Garnet subsalt prospect in the East Cameron, South Addition area of offshore Louisiana was acquired by Anadarko Petroleum Corporation in the 1994 offshore Louisiana federal lease sale. The prospect is a structural closure beneath a rugose and highly deformed allochthonous salt sheet. This salt geometry has distorted the seismic image below it, making necessary the use of more elaborate and costly seismic depth imaging techniques. The prospect is further complicated by the lack of proximate deep well control to aid in predicting stratigraphy below salt. In this paper, we present the progressive stages of prospect evaluation leading to the current interpretation, beginning first with the initial lease sale identification of the prospect. Through the various stages of evaluation, geophysical efforts have reflected an attempt to balance time and costs with the anticipated benefits. Seismic evaluation has progressed from various 2D methods through 3D time migration, 3D post-stack depth migration and ultimately to 3D pre-stack depth migration. The primary goal of the 3D pre-stack depth migration was to image below salt and considerable effort has been expended in deriving an accurate velocity model for the final depth migration. The improved imaging of the various salt bodies has produced a more accurate picture of the salt geometries and subsalt structures. From this, we have reconstructed the salt movement within the prospect area and have inferred salt tectonic and sedimentation interrelationships.

Zick, A.D.; Addis, D.J. [Anadarko Petroleum Corp., Houston, TX (United States); Pieprazak, A.W. [Schlumberger Geco-Prakta, Houston, TX (United States)

1996-12-31

325

Offshore based WARP{trademark} Power Spar buoys for multi-megawatt wind power plants  

SciTech Connect

Since the earliest use of wind as a stationary power source, major consideration and effort has gone into the selection of a location with relatively high wind speed as well as proximity to the place of energy demand. As wind speed increases, collectible energy from the wind increases by the third power. That is, in a location with 20% higher wind speed, it is possible to generate 73% more power. If 50% higher wind velocity is available, 300% more power and energy can be generated. In the ideal, an offshore wind power plant should be easily and relatively inexpensively constructed, and economically sited in any depth water. In addition to these characteristics, if the typically excellent offshore winds could be amplified by as much as 50% to 80% and captured by low cost, highly reliable aircraft propeller sized wind turbines, substantial cost effectiveness and practicality would result. ENECO`s Wind amplified Rotor Platform (WARP{trademark}) Power Spar buoy system design appears to have the features needed to achieve these objectives and is proposed for test and commercialization.

Weisbrich, A.L. [ENECO, West Simsbury, CT (United States); Rhodes, A.F. [WAT, Inc., Houston, TX (United States)

1998-12-31

326

Well cost estimates in various geothermal regions  

SciTech Connect

A project to estimate well costs in regions of current geothermal activity has been initiated. Costs associated with commonly encountered drilling problems will be included. Activity-based costing techniques will be employed to allow the identification of cost drivers and the evaluation of the economic effects of new technologies and operational procedures on well costs. The sensitivity of well costs to a number of parameters such as rate-of-penetration and daily operating costs will be examined. Additional sensitivity analyses and trade-off studies will evaluate the efficiency of various operational practices and preventive, as well as remedial, actions. These efforts should help provide an understanding of the consumption of resources in geothermal drilling.

Pierce, K.G.; Bomber, T.M. [Sandia National Labs., Albuquerque, NM (United States); Livesay, B.J. [Livesay Consultants, Encinitas, CA (United States)

1997-06-01

327

The costs of New Zealand pathology.  

PubMed

This paper focuses on methods for costing and funding hospital pathology services, and their relevance for government cost-control goals. Cost is an elusive, socially constructed phenomenon. As such it is context dependent and can be defined in different ways for different purposes. Misunderstanding of the contexts and purposes creates confusion and leads to contradictions and 'costly' mistakes for the New Zealand taxpayer. The cost to the taxpayer is not synonymous with the costs incurred in laboratories. The calculations of the latter, in a hospital setting, are so complex that often those responsible for running the cost systems do not understand the inscriptions produced by computer translations. In this paper, two costing initiatives potentially useful for non-competitive cost containment are outlined. The paper argues that the multiple funding methods resulting from New Zealand's public/private health care mix perpetuate perverse incentives that drive laboratory test volume escalation and discourage the full exploitation of potential economies-of-scale. The long-held objective of successive New Zealand governments to divert health funding away from hospitals and into preventive health care, is being subverted by the retention, at laboratory service level, of a competitive contracting system that was initially set up to contain test prices. The result for the New Zealand taxpayer is that costs are excessive, with millions of dollars passing to foreign-owned laboratories, which have incentives to take the tests, as well as the profits, offshore. PMID:12694950

France, Necia C; Francis, Graham A J; Lawrence, Stewart R

2003-05-01

328

The economic impact of proposed regulations on the discharge of drilling muds and cuttings from the offshore facilities on US undiscovered crude oil reserves  

SciTech Connect

This paper presents the results of an assessment of the potential economic impact of proposed regulations. on the discharge of drilling fluids (muds) and cuttings on US offshore undiscovered crude oil resources. These regulations include proposed Best Available Technology economically achievable (BAT) and New Source Performance Standards (NSPS) effluent limitations under the Clean Water Act governing the discharge of drilling fluids and drill cuttings from offshore oil and gas drilling operations. The impact of the proposed RAT/NSPS regulations for the drilling fluids and drill cuttings disposal on the cost of funding, developing, and producing Lower-48 offshore undiscovered crude oil resources will depend significantly on operators perceptions on the chances of failing toxicity or static sheen tests. If operators, in economically justifying their projects, assume that the fluids fail one of these tests, thereby prohibiting them from being discharged, up to 11% of the economically recoverable offshore resource would be considered uneconomic to produce. This would amount to 845 million barrels of oil at an oil price around $25 per barrel. On the other hand, if operators are willing co take their chances and see if their fluids fail one of these tests, then, based on EPA`s assumptions concerning forecast fluid use and static sheen and toxicity test failure rates, up to 4% of the offshore undiscovered resource would be impacted, amounting to lost reserves of up to 270 million barrels.

Not Available

1989-01-13

329

14. OFFSHORE VIEW OF PIER, LOOKING SOUTHEAST, SHOWING (LEFTRIGHT) PUMPHOUSE, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

14. OFFSHORE VIEW OF PIER, LOOKING SOUTHEAST, SHOWING (LEFT-RIGHT) PUMPHOUSE, TACKLE BOX, RESTROOMS ON 3RD TEE - Huntington Beach Municipal Pier, Pacific Coast Highway at Main Street, Huntington Beach, Orange County, CA

330

12. OFFSHORE VIEW OF PIER, LOOKING EAST, SHOWING LIFEGUARD TOWER ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

12. OFFSHORE VIEW OF PIER, LOOKING EAST, SHOWING LIFEGUARD TOWER AND 2ND TEE (CENTER), REFUGE BAY (RIGHT) - Huntington Beach Municipal Pier, Pacific Coast Highway at Main Street, Huntington Beach, Orange County, CA

331

Coupled Dynamic Analysis of Multiple Unit Floating Offshore Wind Turbine  

E-print Network

In the present study, a numerical simulation tool has been developed for the rotor-floater-tether coupled dynamic analysis of Multiple Unit Floating Offshore Wind Turbine (MUFOWT) in the time domain including aero-blade-tower dynamics and control...

Bae, Yoon Hyeok

2013-04-23

332

77 FR 26562 - Mobile Offshore Drilling Unit Dynamic Positioning Guidance  

Federal Register 2010, 2011, 2012, 2013, 2014

...of availability and request for comments regarding a draft policy letter on Dynamic Positioning (DP) Systems, Emergency Disconnect Systems, Blowout Preventers, and related training and emergency procedures on a Mobile Offshore Drilling Unit. We...

2012-05-04

333

Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm  

E-print Network

Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2003 #12;Hard Design ApS #12;Horns Rev. Hard Bottom Substrate Monitoring Page 3 Annual Status Report 2003 Doc. No. 2230

334

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2010 CFR

...MMC as offshore installation manager (OIM), barge supervisor (BS), or ballast control operator (BCO) authorizes service only...license or MMC officer endorsement as mate and an endorsement as BS or BCO. An individual holding a license or MMC officer...

2010-10-01

335

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2013 CFR

...MMC as offshore installation manager (OIM), barge supervisor (BS), or ballast control operator (BCO) authorizes service only...license or MMC officer endorsement as mate and an endorsement as BS or BCO. An individual holding a license or MMC officer...

2013-10-01

336

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2012 CFR

...MMC as offshore installation manager (OIM), barge supervisor (BS), or ballast control operator (BCO) authorizes service only...license or MMC officer endorsement as mate and an endorsement as BS or BCO. An individual holding a license or MMC officer...

2012-10-01

337

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2011 CFR

...MMC as offshore installation manager (OIM), barge supervisor (BS), or ballast control operator (BCO) authorizes service only...license or MMC officer endorsement as mate and an endorsement as BS or BCO. An individual holding a license or MMC officer...

2011-10-01

338

Use of a mobile diving support vessel, Offshore California  

SciTech Connect

The Blue Dolphin is a converted workboat with a one-atmosphere manipulator bell diving system. It provides diving support for Chevron's offshore drilling program. This support includes underwater inspection, repair and salvage.

Carroll, J.P.

1983-03-01

339

Plastic Limit Analysis of Offshore Foundation and Anchor  

E-print Network

the course of this research. Dr. Aubeny has been a great advisor and mentor, providing me with valuable opportunities to broaden my knowledge and further myself in the plasticity theory and offshore foundations field. In academic research, I learned... and activities, enriching my Aggie life wonderfully. I am also thankful to Evan Zimmerman, the manager of Delmar Systems, for providing a good opportunity to touch more issues and people in the offshore field. Finally, big thanks to my family and persons who...

Chi, Chao-Ming

2010-10-12

340

Bodyshopping versus offshoring among Indian software and information technology firms  

Microsoft Academic Search

Investigations of offshore outsourcing of information systems have presented little evidence on developing country software\\u000a and information technology (IT) industries. This study probes how Indian software and IT suppliers trade off work in India\\u000a versus bodyshopping of employees. Worldwide clients view these practices as full offshoring versus on-shore temporary hiring\\u000a from an Indian firm, but these practices are probed from

Sumit K. MajumdarKenneth; Kenneth L. Simons; Ashok Nag

2011-01-01

341

CHAPTER 10 CONCLUDING THOUGHTS: THE FUTURE OF OFFSHORE AQUACULTURE  

Microsoft Academic Search

The Offshore Aquaculture Consortium (OAC) was created as a collaborative, Gulf-wide, interdis- ciplinary research and development program in response to the U.S. Department of Commerce Aquaculture Policy. OAC research has demonstrated numerous components of offshore aquacul- ture in the Gulf of Mexico including permitting requirements, mooring systems, cage\\/mooring survival during several hurricanes and tropical storms, automatic feeding capabilities, and fish

Christopher J. Bridger

342

Reliability-based Design of Offshore Mooring Systems  

E-print Network

RELIABILITY-BASED DESIGN OF OFFSHORE MOORING SYSTEMS A Dissertation by MIR EMAD MOUSAVI Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of DOCTOR... Copyright 2013 Mir Emad Mousavi ii ABSTRACT This study proposes new methods for the reliability-based design of structural systems, with emphasis on offshore mooring systems. After a brief introduction to the mooring systems, two main objectives...

Mousavi, Mir Emad

2013-02-05

343

Offshore Wind Resource Potential of the United States  

Microsoft Academic Search

Offshore wind resources have the potential to be a significant domestic energy source. Many coastal areas have large electricity demand but have limited access to high-quality, land-based wind resource. The U.S. Department of Energy's National Renewable Energy Laboratory has developed a baseline offshore wind resource database that incorporates physical parameters that impact development. These characteristics include wind power class, water

D. Heimiller; S. Haymes; M. Schwartz; W. Musial

2007-01-01

344

Potential on-shore and off-shore reservoirs for CO2 sequestration in Central Atlantic magmatic province basalts  

PubMed Central

Identifying locations for secure sequestration of CO2 in geological formations is one of our most pressing global scientific problems. Injection into basalt formations provides unique and significant advantages over other potential geological storage options, including large potential storage volumes and permanent fixation of carbon by mineralization. The Central Atlantic Magmatic Province basalt flows along the eastern seaboard of the United States may provide large and secure storage reservoirs both onshore and offshore. Sites in the South Georgia basin, the New York Bight basin, and the Sandy Hook basin offer promising basalt-hosted reservoirs with considerable potential for CO2 sequestration due to their proximity to major metropolitan centers, and thus to large industrial sources for CO2. Onshore sites are suggested for cost-effective characterization studies of these reservoirs, although offshore sites may offer larger potential capacity and additional long-term advantages for safe and secure CO2 sequestration. PMID:20080705

Goldberg, David S.; Kent, Dennis V.; Olsen, Paul E.

2010-01-01

345

Conceptual Model of Offshore Wind Environmental Risk Evaluation System  

SciTech Connect

In this report we describe the development of the Environmental Risk Evaluation System (ERES), a risk-informed analytical process for estimating the environmental risks associated with the construction and operation of offshore wind energy generation projects. The development of ERES for offshore wind is closely allied to a concurrent process undertaken to examine environmental effects of marine and hydrokinetic (MHK) energy generation, although specific risk-relevant attributes will differ between the MHK and offshore wind domains. During FY10, a conceptual design of ERES for offshore wind will be developed. The offshore wind ERES mockup described in this report will provide a preview of the functionality of a fully developed risk evaluation system that will use risk assessment techniques to determine priority stressors on aquatic organisms and environments from specific technology aspects, identify key uncertainties underlying high-risk issues, compile a wide-range of data types in an innovative and flexible data organizing scheme, and inform planning and decision processes with a transparent and technically robust decision-support tool. A fully functional version of ERES for offshore wind will be developed in a subsequent phase of the project.

Anderson, Richard M.; Copping, Andrea E.; Van Cleve, Frances B.; Unwin, Stephen D.; Hamilton, Erin L.

2010-06-01

346

International Journal of Offshore and Polar Engineering (ISSN 1053-5381) Copyright by The International Society of Offshore and Polar Engineers  

E-print Network

for shear and overturning moment at the seabed for an active stall-regulated wind turbine located at 2 the Accuracy of Offshore Wind Turbine Reliability-based Design Loads from the Environmental Contour Method Korn-regulated offshore wind turbine. Two different Danish offshore environments, Rødsand and Horns Rev, are considered

Manuel, Lance

347

Quantifying the benefits of a slender, high tip speed blade for large offshore wind turbiness  

NASA Astrophysics Data System (ADS)

An in-depth study has been completed to study the effects of slender, flexible blades in combination with high rotor speed operation on load mitigation, targeted at cost reductions of the structural components of large wind turbines, consequently lowering the levelized cost of energy. An overview of existing theory of sensitivity of turbine fatigue loading to the blade chord and rotor speed was created, and this was supplemented by a proposed theory for aboverated operation including the pitch controller. A baseline jacket-supported offshore turbine (7 MW) was defined, of which the blade was then redesigned to be more slender and flexible, at the same time increasing rotor speed. The blade redesign and optimisation process was guided by cost of energy assessments using a reduced loadset. Thereafter, a full loadset conform IEC61400-3 was calculated for both turbines. The expected support structure load reductions were affirmed, and it was shown that reductions of up to 18.5% are possible for critical load components. Cost modelling indicated that turbine and support structure CapEx could be reduced by 6%. Despite an energy production reduction of 0.44% related to the thicker airfoils used, the blade redesign led to a reduction in Cost of Energy.

Blonk, Lindert; Rainey, Patrick; Langston, David A. J.; Vanni, Francesco

2014-06-01

348

Troubleshooting Costs  

NASA Astrophysics Data System (ADS)

Seventy-six million cases of foodborne disease occur each year in the United States alone. Medical and lost productivity costs of the most common pathogens are estimated to be 5.6-9.4 billion. Product recalls, whether from foodborne illness or spoilage, result in added costs to manufacturers in a variety of ways. These may include expenses associated with lawsuits from real or allegedly stricken individuals and lawsuits from shorted customers. Other costs include those associated with efforts involved in finding the source of the contamination and eliminating it and include time when lines are shut down and therefore non-productive, additional non-routine testing, consultant fees, time and personnel required to overhaul the entire food safety system, lost market share to competitors, and the cost associated with redesign of the factory and redesign or acquisition of more hygienic equipment. The cost associated with an effective quality assurance plan is well worth the effort to prevent the situations described.

Kornacki, Jeffrey L.

349

Assessment of economic impact of offshore and coastal discharge requirements on present and future operations in the Gulf of Mexico. Final report  

SciTech Connect

The high potential costs of compliance associated with new effluent guidelines for offshore and coastal oil and gas operations could significantly affect the economics of finding, developing, and producing oil and gas in the Gulf of Mexico. This report characterizes the potential economic impacts of alternative treatment and discharge regulations for produced water on reserves and production in Gulf of Mexico coastal, territorial and outer continental shelf (OCS) waters, quantifying the impacts of both recent regulatory changes and possible more stringent requirements. The treatment technologies capable of meeting these requirements are characterized in terms of cost, performance, and applicability to coastal and offshore situations. As part of this analysis, an extensive database was constructed that includes oil and gas production forecasts by field, data on existing platforms, and the current treatment methods in place for produced water treatment and disposal on offshore facilities. This work provides the first comprehensive evaluation of the impacts of alternative regulatory requirements for produced water management and disposal in coastal and offshore areas of the Gulf of Mexico.

Lindsey, R. [Bartlesville Project Office, OK (United States)

1996-06-01

350

Unusual earthquake sequence at offshore Boryeong, Korea  

NASA Astrophysics Data System (ADS)

An unusual earthquake sequence starts to occur on June 4, 2013 at offshore area of which distance about 40 km to the west of Boryeong, Korea. This sequence lasts for two months and is very unusual case regarding current seismic activity in Korea. Korea Institute of Geoscience and Mineral Resources (KIGAM) catalog lists 144 events of the sequence with the magnitude range of ML 1.2 to 3.8, whereas Korea Meteorological Agency (KMA) catalog assigned 93 events the magnitude range of ML 0.7 to 3.5. The sequence consists of small repeating clusters over 20 km by 10 km area instead of a large mainshock preceding a series of small aftershocks. The hypocenter locations of the events are relocated by double-difference algorithm to identify potential caustic fault. Focal mechanism of the largest event ML 3.8 on 12 July show predominant strike-slip faulting and P-axis is horizontal ENE-WSW direction. The solution is compatible to the direction of main stress field in and around the Korean peninsula.

Cho, H.; Shin, J.

2013-12-01

351

Data warehouse manages offshore project information  

SciTech Connect

A data warehouse adopted from the POSC/Caesar data model will manage the life-cycle information for the offshore Norway Aasgard project. The Aasgard project comprises the Midgard, Smorbukk, and Smorbukk South fields, which lie in 780--985 ft of water. A semisubmersible production facility will handle gas exports, scheduled to begin in 2000. Statoil estimates that recoverable reserves in the fields are 7.5 tcf of gas and 780 million bbl of oil. Notia software components include: the Intergraph asset and information management (AIM) product; the P/C PDM and P/C RDL models; a data mapping, translation, and import toolkit; the application programming interface (API); and query and browser clients. Intergraph describes AIM, with its object management framework (OMF) from metaphase technology, as the engine upon which Notia is based. The P/C PDM defines the data terminology and structure. A dictionary of standard petrochemical data items, the P/C RDL, defines the various activities, materials, components, and relationships among these items. The API allows users to develop additional functionality, and the toolkit provides resources for translating and mapping data from existing sources into a neutral format so that administrators can prepopulate the data warehouse. A worldwide web browser client allows users to query the data warehouse and display results in a variety of configurable formats, including virtual data sheets.

NONE

1998-05-04

352

Ubarana Oil Field, offshore Brazil: case history  

SciTech Connect

Ubarana is the first commercial oil field on the northern continental shelf of Brazil. Discovery well No. 1-RNS-3, drilled in 1973, was located on a seismic structural high in the offshore extension of the Potiguar Basin, about 13 km from the coast and 160 km northwest of Natal. The well penetrated oil-bearing, fluvio-deltaic sandstones of the Cretaceous acu formation. Five outpost wells, also located on the mapping of seismic horizons adjacent to the producing interval, helped to extend the limits of the accumulation. A total of 1.4 million cu m of oil has been produced between 1976 and Oct. 1980. The surface area of Ubarana Field is approximately 35 sq km with oil-bearing reservoirs at an average depth of approximately 2400 m. Permeability and porosity of the sandstones generally are poor. Pressure is normal and the main production mechanism is solution gas drive. The volume of oil in place is approximately 37 million cu m; estimated recovery factor is 29%. There are presently 4 platforms in the Ubarana Field active in drilling and production with 32 producing wells, and 14 locations to be drilled.

Chagas, L.S.; Stringhini, A.V.; Gontijo, J.E.

1981-05-01

353

Exploration and development offshore southern Vietnam  

SciTech Connect

In Vietnam, the major focus of the oil and gas industry is on the Nam Con Son and Cuu Long Basins in the southern offshore area. Major licensing first occurred here in the early 1970s. Some exploration was also undertaken by foreign companies in the early 1980s. In 1981, the Soviet Union undertook to assist Vietnam with the development of oil and gas. Vietsovpetro, a joint venture between the then Soviet Oil and Gas Ministry and the Vietnam Oil and Gas Corporation was formed. Most of Vietsovpetro's efforts have been to develop the Bach Ho field in the Cuu Long Basin. This now produces [approximately]130000 bopd. The most recent large scale licensing round occurred in 1992, and, at present, there are over thirty foreign companies active in these Basins' blocks . The first phase of exploration is ending and successes in the Nam Con Son Basin include the BP-led Lan Tay/Lan Do gas discoveries and Pedco's gas discoveries. Mitsubishi's and Petronas' oil discoveries in the Cuu Long Basin have attracted much attention also. The Dai Hung oil field (BHP-operated) has been producing since late 1994. Certain blocks are being appraised, and exploration work is also continuing. Areas of the Cuu Long Basin that were part of Vietsovpetro's acreage, but which may soon be re-licensed, have generated keen interest. The presence of an active upstream industry - exploring, appraising, developing and producing - indicates the emergence of Vietnam as an important East Asian oil and gas player.

Ferguson, A.M. (BP, Hanoi (Viet Nam))

1996-01-01

354

Psychosocial burden among offshore drilling platform employees.  

PubMed

Conditions of work on offshore drilling platforms are particularly hard due to extreme environmental situations created both by nature and technological processes. Oil drilling workers employed on the open sea are potentially exposed to permanently high stress. Apart from the obvious objective factors affecting drilling platform employees, a great role in the general work-related stress level is played by the working conditions and work-related psychosocial factors, defined according to Karask's concept as demands, control, and social support. A total of 184 drill platform workers were examined using objective and subjective research methods. The level of subjective stress among drilling platform workers is lower than the level of objective stress and the stress resulting from prognoses related with specificity of work in extremely hard conditions (audit). The examinations of drilling platform workers reveal a positive role of stress in psychological adaptation, being a special case of the "work ethos" and attachment to the firm. In such investigations of work-related stress on drilling platforms, which are very specific workplaces, a multi-aspect character, sociological and economic aspects, organizational culture conditions in the firm, and a tendency to conceal ailments and the stress experienced should be taken into account. It is important to apply measures referring to at least three different types of evidence (objective demands, subjective stress, health problems reported). Otherwise, the result reflecting work-related stress may not be objective and far from the truth. PMID:21154303

Leszczy?ska, Irena; Je?ewska, Maria

2010-01-01

355

Use of pollen and ancient DNA as conservation baselines for offshore islands in New Zealand.  

PubMed

Islands play a key role globally in the conservation of endemic species. Many island reserves have been highly modified since human colonization, and their restoration and management usually occur without knowledge of their prehuman state. However, conservation paleoecology is increasingly being recognized as a tool that can help to inform both restoration and conservation of island reserves by providing prehuman vegetation baselines. Many of New Zealand's mammal-free offshore islands are foci for biological diversity conservation and, like many islands in the Polynesian region, were deforested following initial human settlement. Therefore, their current restoration, replanting, and management are guided either by historic vegetation descriptions or the occurrence of species on forested islands. We analyzed pollen and ancient DNA in soil cores from an offshore island in northern New Zealand. The result was a 2000-year record of vegetation change that began >1200 years before human settlement and spanned 550 years of human occupation and 180 years of forest succession since human occupation ceased. Between prehuman and contemporary forests there was nearly a complete species turnover including the extirpation of a dominant conifer and a palm tree. The podocarp-dominated forests were replaced by a native but novel angiosperm-dominated forest. There is no modern analog of the prehuman forests on any northern New Zealand island, and those islands that are forested are dominated by angiosperms which are assumed to be climax forests. The pollen and DNA evidence for conifer- and palm-rich forests in the prehuman era challenge this climax forest assumption. Prehuman vegetation records can thus help to inform future restoration of degraded offshore islands by informing the likely rate and direction of successional change; helping to determine whether natural rates of succession are preferable to more costly replanting programs; and providing past species lists if restoration replanting is desired. PMID:24024911

Wilmshurst, Janet M; Moar, Neville T; Wood, Jamie R; Bellingham, Peter J; Findlater, Amy M; Robinson, James J; Stone, Clive

2014-02-01

356

Geological characterization of selected offshore sand resources on the OCS, offshore Alabama, for beach nourishment  

USGS Publications Warehouse

Most Alabama Gulf and estuarine shoreline is undergoing long-term erosion; threatened shorelines will need programs of replenishment and maintenance if they are to be even temporarily stabilized. Highest priority beach replenishment areas include eastern Dauphin Island; west of Perdido Pass; and west of the inlet at Little Lagoon. There are no appropriate local onshore sand sources available for any such large scale program. Sediments in the Federal waters of the EEZ were evaluated for possible sources of sand for beach nourishment. Six lithofacies were delineated based on sediment characterization, spatial framework, and environment of deposition; of these, two (Clean Sands and Graded Shelly Sands) were deemed to have highest potential as beach nourishment sources. Five offshore target areas were delineated as potential sand sources. Criteria included sand aesthetics, estimated sand volume, and sand distributions. Preliminary environmental analyses included impacts of offshore sand dredging on shelf circulation; on economic activities; and on local benthic biota. Dredging may not significantly alter background wave regimes; however, data are insufficient to model effects of major storms on a modified shelf morphology. Dredging would avoid areas of current economic activity. There would like be little long-term impact on benthic biota in the target areas. Additional work will be required to confirm or refute these preliminary findings.

Davies, David J.; Parker, Steven J.; Smith, W. Everett

1993-01-01

357

Fluorescent nanosensor for probing histone acetyltransferase activity based on acetylation protection and magnetic graphitic nanocapsules.  

PubMed

Protein acetylation catalyzed by histone acetyltransferases (HATs) is significant in biochemistry and pharmacology because of its crucial role in epigenetic gene regulations. Herein, an antibody-free fluorescent nanosensor is developed for the facile detection of HAT activity based on acetylation protection against exopeptidase cleavage and super-quenching ability of nanomaterials. It is shown for the first time that HAT-catalyzed acetylation could protect the peptide against exopeptidase digestion. FITC-tagged acetylated peptide causes the formation of a nano-quenchers/peptide nano-complex resulting in fluorescence quenching, while the unacetylated peptide is fully degraded by exopeptidase to release the fluorophore and restore fluorescence. Four kinds of nano-quenchers, including core-shell magnetic graphitic nanocapsules (MGN), graphene oxide (GO), single-walled carbon nanotubes (SWCNTs), and gold nanoparticles (AuNPs), are comprehensively compared. MGN shows the best selectivity to recognize the acetylated peptide and the lowest detection limit because of its excellent quenching efficiency and magnetic enrichment property. With this MGN-based nanosensor, HAT p300 is detected down to 0.1 nM with wide linear range from 0.5 to 100 nM. This sensor is feasible to assess HAT inhibition and detect p300 activity in cell lysate. The proposed nanosensor is simple, sensitive, and cost-effective for HAT assay, presenting a promising toolkit for epigenetic research and HAT-targeted drug discovery. PMID:25277402

Han, Yitao; Li, Pei; Xu, Yiting; Li, Hao; Song, Zhiling; Nie, Zhou; Chen, Zhuo; Yao, Shouzhuo

2015-02-01

358

Adolescent activity-based anorexia increases anxiety-like behavior in adulthood  

Microsoft Academic Search

Activity-based anorexia is a paradigm that induces increased physical activity, reduced food intake, and heightened activity of the hypothalamic-pituitary-adrenal axis in adult rats. To investigate whether experience with activity-based anorexia produced enduring effects on brain and behavior, female adolescent rats experienced activity-based anorexia during adolescence and were tested in adulthood for anxiety-like behavior on an elevated plus maze and in

Kimberly P. Kinzig; Sara L. Hargrave

2010-01-01

359

Cost Comparisons  

NSDL National Science Digital Library

Students learn about the many types of expenses associated with building a bridge. Working like engineers, they estimate the cost for materials for a bridge member of varying sizes. After making calculations, they graph their results to compare how costs change depending on the use of different materials (steel vs. concrete). They conclude by creating a proposal for a city bridge design based on their findings.

Integrated Teaching and Learning Program,

360

Reducing the cost of top-drive installation  

SciTech Connect

To equip an older jackup, the Offshore Mercury, with a completely workable and reliable top drive at minimum cost and without sacrificing performance, Sonat Offshore Drilling installed a power-swivel drilling system that did not require heightening or strengthening the derrick. An electronic crown protection system was installed to allow the driller use of all available reduced crown clearance, thereby increasing drilling safety by reducing the probability of accidentally running the traveling block into the crown. In addition, they modified the DC-DC drilling power equipment to create a completely functional and low-cost alternative to installing additional AC power-generating capacity and an SCR system. When planning a cost-effective top-drive installation on the Offshore Mercury, they recognized that the rig did not fit the average jackup profile: It has a DC-DC electric power drilling system and only a 140-ft (43-m) derrick, rather than the more common SCR system and 147-ft (45-m) derrick. From costs studies made up to the middle of 1991, they believed they could save a significant amount if it were possible to install and use a top drive in a 147-ft (45-m) or even a 140-ft (43-m) derrick without having to extend and strengthen the derrick. This paper reviews the design of this system and the effectiveness of its performance.

Hock, C.J. (Sonat Offshore Drilling Inc., Houston, TX (United States))

1993-09-01

361

\\\\server05\\productn\\C\\CJP\\14-1\\CJP102.txt unknown Seq: 1 24-FEB-05 17:48 REGULATING OFFSHORE WIND POWER AND  

E-print Network

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 R A. OFFSHORE AQUACULTURE (MARICULTURE) . . . . . . . . . . . 74 R B. OFFSHORE WIND POWER PRODUCTION . . . . . . . . . . . . . . . 75 R C. POTENTIAL CONNECTIONS AMONG OFFSHORE WIND POWER, MARINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 R A. OFFSHORE WIND POWER IN EUROPE . . . . . . . . . . . . . . . . . 96 R B. BEST PRACTICES

Firestone, Jeremy

362

Installation of a production manifold in 2000 ft water depth offshore Brazil  

SciTech Connect

This paper describes the installation and related analyses of a subsea production manifold in 620 meters water depth at Campos basin, offshore Brazil. A pre-installed mooring system was used to moor the crane barge which lowered the structure. Time domain and frequency domain computer programs were used to evaluate the response of the system. A sensitivity study was conducted in order to assess the added mass, damping, stiffness and excitation forces influences on the system response and the importance of such parameters in the computer model calibration is discussed. Model tests were performed in order to determine the manifold hydrodynamic coefficients to be input to a computer program to evaluate the displacements and forces during the descent of the structure. Offshore measurements were performed on the hoist forces, vessel motions, crane boom tip vertical motions and manifold vertical motions. The anticipated responses are compared with some of these measurements. The method used for lowering the manifold, the mooring system and the manifold orientation and strategy considered to adapt a conventional crane barge for installation beyond its nominal specifications, but considering safety and cost-effectiveness, are also described.

Roveri, F.E.; Oliveira, M.C. de; Moretti, M.J.

1996-12-31

363

Offshore cathodic protection design, inspection, and computer modeling: Innovations from the 1980s  

SciTech Connect

Throughout the 1980s, equipment was used increasingly to monitor electric fields (EF) strength/current density in CP surveys of North Sea structures. Probes for remote-operated vehicle (ROV) and diver operations are used to measure simultaneously the potential and the EF strength at exposed steel, at typical stand-off anodes, at sacrificial bracelet anodes on pipelines, and so on. A sensitive system for such purposes is based on a pair of electrodes at the tips of a T-shaped spindle rotating at a known frequency. The 1980s saw several innovations in the field of offshore cathodic protection (CP). The increasing use of organic coatings on offshore structures is more or less a result of the need to reduce the number of anodes. In a design incorporating coatings, coating breakdown plays a key role. In later years, aluminum-coated structures have been introduced for submerged conditions. It seems that in the future, aluminum coatings will be used merely as barrier coatings. The bare aluminum coating has a very low current demand on the order or 10 mA/m[sup 2] or less. Emphasis is now on CP design by computer modeling and on data retrieved during inspections using sophisticated equipment and procedures. The effect of the innovations on traditional design, on design verification, and on retrofitting is discussed in relation to relevant cases and field work. Future applications that may give better insight into CP system performance at reduced cost are also suggested.

Gartland, P.O.; Strommen, R.D.; Osvoll, H.; Johnsen, R. (CorrOcean as, Trondheim (Norway))

1993-12-01

364

Sedimentary sequence of offshore southeastern US: preliminary study based on exploration wells  

SciTech Connect

In 1982, geologic data from the exploratory wells in the offshore southeastern US were released to the public. Prior to this time, well data were limited the the COST (Continental Offshore Stratigraphic Test) GE-1 well, the first deep-penetration well, which was completed in 1977. Six additional exploration wells were completed thereafter. Although these wells were dry holes, information provided by them has contributed to the geologic interpretation of the Atlantic margin. The oldest rocks penetrated by these wells are Paleozoic indurated shale and argillite, sandstone and weakly metamorphosed quartzite, and igneous rocks. The post-Paleozoic section ranges from 2220 to 3660 m (7280 to 12,000 ft) thick at the well sites, but seismic data indicate that equivalent section thickens to 10-12 km (6-7 mi) beneath the Blake plateau. The Lower Cretaceous through Cenozoic section represents a progression from nonmarine and marginal marine to marine sedimentation. Three main units are recognized: lower siliciclastic, middle calcareous mudstone, and upper limestone. The siliciclastic unit consists of interbedded gray to red-brown sandstone, siltstone, and shale with some conglomerate, coal, evaporites, and carbonate rocks. Based on petrographic examination, the sandstone compositions, vary between arkose, litharenite, and quartz arenite. Calcareous clay and shale (grading to shaly limestone) overlie the siliciclastic rocks. The upper limestone contains chert, oolites, and shell fragments and ranges in composition from micrite to sparite. By comparing these units to the onshore Georgia sedimentary section, regional lithofacies trends that can be useful for future exploration are recognized.

Libby-French, J.

1984-04-01

365

Sanaga Sud field - Offshore Cameroon, west Africa  

SciTech Connect

The Sanaga Sud field, offshore Cameroon, is located just northwest of the coastal town of Kribi in the northern part of the Douala basin. The discovery well, Sanaga Sud A-1, was drilled in 1979 to test an apparent horst block that contained a prominent horizontal seismic amplitude. The Douala basin is one of a series of passive margin basins located along the coastline of central and southern Africa, and formed during the rifting of Africa and South America during the Early Cretaceous. Drilling results showed that the amplitude was a gas/water contact. Two appraisal wells, SSA-2 and SSA-3, were drilled in 1981. All three wells tested gas and condensate. Total recoverable hydrocarbons for the field are estimated to be approximately 1 tcf of gas. The trap in this field is composed of tilted and rotated fault blocks composed of interbedded Aptian to Albian sandstones, siltstones, and shales. The fault blocks were truncated by erosion (breakup unconformity) and later buried by a considerable thickness of onlapping Upper Cretaceous and Tertiary shale. The late Albian erosional unconformity forms the top of the trap over most of the field. Geochemical studies indicate a Lower Cretaceous source for the hydrocarbons. The gross pay thickness averages 250 m with an average porosity of 23% and an average permeability of 142 md. Reservoir lithologies range from well-sorted, massive sandstones to poorly sorted fine sandstones and siltstones containing shaly laminations that are carbonaceous and micaceous. The field is located predominantly in Block PH-38, but part of the field is in the Londji concession. Mobil Producing Cameroon, Inc., is the operator of PH-38 and Total Exploration and Production Cameroon is the operator of the Londji concession.

Pauken, R.J. (Mobil New Exploration Ventures Co., Dallas, TX (USA))

1990-09-01

366

Exploration and development offshore southern Vietnam  

SciTech Connect

In Vietnam, the major focus of the oil and gas industry is on the Nam Con Son and Cuu Long Basins in the southern offshore area. Major licensing first occurred here in the early 1970s. Some exploration was also undertaken by foreign companies in the early 1980s. In 1981, the Soviet Union undertook to assist Vietnam with the development of oil and gas. Vietsovpetro, a joint venture between the then Soviet Oil and Gas Ministry and the Vietnam Oil and Gas Corporation was formed. Most of Vietsovpetro`s efforts have been to develop the Bach Ho field in the Cuu Long Basin. This now produces {approximately}130000 bopd. The most recent large scale licensing round occurred in 1992, and, at present, there are over thirty foreign companies active in these Basins` blocks . The first phase of exploration is ending and successes in the Nam Con Son Basin include the BP-led Lan Tay/Lan Do gas discoveries and Pedco`s gas discoveries. Mitsubishi`s and Petronas` oil discoveries in the Cuu Long Basin have attracted much attention also. The Dai Hung oil field (BHP-operated) has been producing since late 1994. Certain blocks are being appraised, and exploration work is also continuing. Areas of the Cuu Long Basin that were part of Vietsovpetro`s acreage, but which may soon be re-licensed, have generated keen interest. The presence of an active upstream industry - exploring, appraising, developing and producing - indicates the emergence of Vietnam as an important East Asian oil and gas player.

Ferguson, A.M. [BP, Hanoi (Viet Nam)

1996-12-31

367

Building the Hibernia: Newfoundland's huge offshore platform  

SciTech Connect

It seems most of the world is cooperating in the construction of one of the largest offshore oil platforms ever built. Steels are coming into Newfoundland, where final assembly is being conducted, from Belgium, Italy, Germany; stainless steels from Sweden; and titanium from the US. Welding electrodes are being shipped in from Montreal, from Holland, even from Cleveland. The objective is to tap the 615 million barrels (bbl) of oil that lie in the Hibernia field on the Grand Banks, some 195 miles (315 km) east southeast of St. John's, Newfoundland. Actual welding is going on in numerous locations. Although the platform is a concrete base structure, 37,000 metric tons of structural steel is being welded in order to complete the topsides assembly. In charge of all construction work is the Hibernia Management and Development Co., Ltd. (HMDC), an operating company formed by the four owner companies. The topsides segment of the Hibernia platform is divided into five major modules. It consists of five super modules and seven topside-mounted structures (TMS). One super module is being built in Bull Arm in Newfoundland. The process module and the living quarters module are being built by Hyundai Heavy Industries, South Korea, while the mud and utility modules are being fabricated by Belleli, s.p.a., Italy. The five super modules and the seven TMS will be brought together in Newfoundland where they will be welded together. All seven of the topside-mounted structures are being fabricated in Newfoundland. The assembled topsides will be towed to the site where they will be mated to the gravity base structure (GBS).

Irving, B.

1994-10-01

368

Shift work at a modern offshore drilling rig.  

PubMed

The oil and gas exploration and production offshore units are classified as hazardous installations. Work in these facilities is complex, confined and associated with a wide range of risks. The continuous operation is secured by various shift work patterns. The objective of this study was to evaluate how offshore drilling workers perceived shift work at high seas and its impacts on their life and working conditions. The main features of the studied offshore shift work schedules are: long time on board (14 to 28 days), extended shifts (12 hours or more per day), slow rotation (7 to 14 days in the same shift), long sequence of days on the night shift (7 to 14 days in a row) and the extra-long extended journey (18 hours) on shift change and landing days. Interviews revealed a wide range of stressors caused by the offshore shift work, as well as difficulties to conciliate work with family life. It was observed that changes of the family model, leading to role conflicts and social isolation, work in a hazardous environment, perceiving poor sleep when working at night shifts and the imbalance between the expected and actual rewards are the major stressors for the offshore drilling workers. PMID:14564877

Rodrigues, V F; Fischer, F M; Brito, M J

2001-12-01

369

Quantifying the hurricane risk to offshore wind turbines.  

PubMed

The U.S. Department of Energy has estimated that if the United States is to generate 20% of its electricity from wind, over 50 GW will be required from shallow offshore turbines. Hurricanes are a potential risk to these turbines. Turbine tower buckling has been observed in typhoons, but no offshore wind turbines have yet been built in the United States. We present a probabilistic model to estimate the number of turbines that would be destroyed by hurricanes in an offshore wind farm. We apply this model to estimate the risk to offshore wind farms in four representative locations in the Atlantic and Gulf Coastal waters of the United States. In the most vulnerable areas now being actively considered by developers, nearly half the turbines in a farm are likely to be destroyed in a 20-y period. Reasonable mitigation measures--increasing the design reference wind load, ensuring that the nacelle can be turned into rapidly changing winds, and building most wind plants in the areas with lower risk--can greatly enhance the probability that offshore wind can help to meet the United States' electricity needs. PMID:22331894

Rose, Stephen; Jaramillo, Paulina; Small, Mitchell J; Grossmann, Iris; Apt, Jay

2012-02-28

370

Quantifying the hurricane risk to offshore wind turbines  

PubMed Central

The U.S. Department of Energy has estimated that if the United States is to generate 20% of its electricity from wind, over 50 GW will be required from shallow offshore turbines. Hurricanes are a potential risk to these turbines. Turbine tower buckling has been observed in typhoons, but no offshore wind turbines have yet been built in the United States. We present a probabilistic model to estimate the number of turbines that would be destroyed by hurricanes in an offshore wind farm. We apply this model to estimate the risk to offshore wind farms in four representative locations in the Atlantic and Gulf Coastal waters of the United States. In the most vulnerable areas now being actively considered by developers, nearly half the turbines in a farm are likely to be destroyed in a 20-y period. Reasonable mitigation measures—increasing the design reference wind load, ensuring that the nacelle can be turned into rapidly changing winds, and building most wind plants in the areas with lower risk—can greatly enhance the probability that offshore wind can help to meet the United States’ electricity needs. PMID:22331894

Rose, Stephen; Jaramillo, Paulina; Small, Mitchell J.; Grossmann, Iris; Apt, Jay

2012-01-01

371

Globalization of environmental regulations for offshore E & P operations  

SciTech Connect

One of the enduring legacies of the Rio Environmental Summit of 1992 (United Nations Conference on Environment and Development, UNCED) is Agenda 21 (Chapter 17 - Protection of the Oceans), which among other things called for the assessment of the need for a global authority to regulate offshore Exploration & Production (E&P) discharges, emissions and safety. Despite advice to the contrary from the International Maritime Organization (IMO), interest is building within the European community for the standardization of regulations for offshore E&P activities. Several international of regulations for offshore E&P activities. Several international frameworks or forums have been mentioned as possible candidates. These include the United Nations Convention on the Law of the Sea, 1982 (UNCLOS); London Convention 1972 (LC 1972) and the International Convention for the Prevention of Pollution from Ships, 1973, as modified by the Protocol of 1978 (MARPOL) 73/78. International offshore oil and gas operators operate within requirements of regional conventions under the United Nations Environmental Program`s (UNEP) - Regional Seas Program. Domestic offshore operations are undertaken under the auspices of the U.S. Environmental Protection Agency and Minerals Management Service.

Shannon, B.E.

1995-12-31

372

Geophysical - new technology, lower cost gearing search  

SciTech Connect

Seismic companies will remain competitive only if they reduce costs and at the same time increase the technological capabilities of their products. Overcapacity and lower prices plague geophysical films. Several key improvements in offshore seismic data collection were made during 1985, e.g., wide-tow seismic source arrays that improve the signal-to-noise ratio of the data by reducing various unwanted noise compounds have become standard and seismic source levels have also been increased by a wider variety of air and water gun offering. These improvement in data collection are discussed.

Heitman, L.B.

1985-12-01

373

Federal offshore statistics: 1992. Leasing, exploration, production, and revenues as of December 31, 1992  

SciTech Connect

The Outer Continental Shelf Lands Act, enacted in 1953 and amended several times, charges the Secretary of the Interior with the responsibility for administering and managing mineral exploration and development of the outer continental shelf, as well as for conserving its natural resources. This report documents the following: Federal offshore lands; offshore leasing activity and status; offshore development activity; offshore production of crude oil and natural gas; Federal offshore oil and natural gas sales volume and royalties; revenue from Federal offshore leases; disbursement of Federal offshore revenue; reserves and resource estimates of offshore oil and natural gas; oil pollution in US and international waters; and international activities and marine minerals. 11 figs., 83 tabs.

Francois, D.K.

1993-12-31

374

78 FR 47723 - Information Collection: Forms for Oil Spill Financial Responsibility for Offshore Facilities...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Information Collection: Forms for Oil Spill Financial Responsibility for Offshore...paperwork requirements under 30 CFR 553, Oil Spill Financial Responsibility for Offshore...1010-0106. Title: 30 CFR 553, Oil Spill Financial Responsibility for...

2013-08-06

375

78 FR 25472 - Information Collection: Oil Spill Financial Responsibility for Offshore Facilities; Proposed...  

Federal Register 2010, 2011, 2012, 2013, 2014

...1010-0106] Information Collection: Oil Spill Financial Responsibility for Offshore...paperwork requirements for 30 CFR 553, Oil Spill Financial Responsibility for Offshore...1010-0106. Title: 30 CFR Part 553, Oil Spill Financial Responsibility for...

2013-05-01

376

75 FR 37783 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013, 2014

...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire and oil spill and develop options to guard...

2010-06-30

377

75 FR 21648 - MMS Information Collection Activity: 1010-0106, Oil Spill Financial Responsibility for Offshore...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Collection Activity: 1010-0106, Oil Spill Financial Responsibility for Offshore...regulations under ``30 CFR Part 253, Oil Spill Financial Responsibility for Offshore...INFORMATION: Title: 30 CFR Part 253, Oil Spill Financial Responsibility for...

2010-04-26

378

40 CFR 112.11 - Spill Prevention, Control, and Countermeasure Plan requirements for offshore oil drilling...  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Spill Prevention, Control...requirements for offshore oil drilling, production...Vegetable Oils (Including Oils from Seeds, Nuts, Fruits...Kernels) § 112.11 Spill Prevention, Control...requirements for offshore oil drilling,...

2010-07-01

379

78 FR 66763 - Information Collection: Oil Spill Financial Responsibility for Offshore Facilities; Submitted for...  

Federal Register 2010, 2011, 2012, 2013, 2014

...MMAA104000] Information Collection: Oil Spill Financial Responsibility for Offshore...paperwork requirements for 30 CFR 553, Oil Spill Financial Responsibility for Offshore...1010-0106. Title: 30 CFR 553, Oil Spill Financial Responsibility for...

2013-11-06

380

75 FR 39518 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling; Correction  

Federal Register 2010, 2011, 2012, 2013, 2014

...ENERGY National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling; Correction AGENCY: Office of...of the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling, (75 FR 37783). This...

2010-07-09

381

40 CFR 112.11 - Spill Prevention, Control, and Countermeasure Plan requirements for offshore oil drilling...  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Spill Prevention, Control...requirements for offshore oil drilling, production...Vegetable Oils (Including Oils from Seeds, Nuts, Fruits...Kernels) § 112.11 Spill Prevention, Control...requirements for offshore oil drilling,...

2011-07-01

382

Large-Scale Offshore Wind Power in the United States: Executive Summary  

SciTech Connect

This document provides a summary of a 236-page NREL report that provides a broad understanding of today's offshore wind industry, the offshore wind resource, and the associated technology challenges, economics, permitting procedures, and potential risks and benefits.

Musial, W.; Ram, B.

2010-09-01

383

33 CFR 334.905 - Pacific Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area.  

Code of Federal Regulations, 2014 CFR

...Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area. 334...Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area. (a...the Pacific Ocean, San Diego County, California. The center of the restricted area...

2014-07-01

384

33 CFR 334.905 - Pacific Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area.  

Code of Federal Regulations, 2012 CFR

...Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area. 334...Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area. (a...the Pacific Ocean, San Diego County, California. The center of the restricted area...

2012-07-01

385

Development of Offshore Wind Recommended Practice for U.S. Waters: Preprint  

SciTech Connect

This paper discusses how the American Petroleum Institute oil and gas standards were interfaced with International Electrotechnical Commission and other wind turbine and offshore industry standards to provide guidance for reliable engineering design practices for offshore wind energy systems.

Musial, W. D.; Sheppard, R. E.; Dolan, D.; Naughton, B.

2013-04-01

386

76 FR 14681 - Commercial Leasing for Wind Power on the Outer Continental Shelf (OCS) Offshore Massachusetts...  

Federal Register 2010, 2011, 2012, 2013, 2014

...BOEM-2010-0063] Commercial Leasing for Wind Power on the Outer Continental Shelf (OCS...for Interest (RFI) in Commercial Wind Energy Leasing Offshore Massachusetts...comment period on the RFI in Commercial Wind Energy Leasing Offshore...

2011-03-17

387

Evidence of offshore lake trout reproduction in Lake Huron  

USGS Publications Warehouse

Six Fathom Bank-Yankee Reef, an offshore reef complex, was an historically important spawning area believed to represent some of the best habitat for the rehabilitation of lake trout Salvelinus namaycush in Lake Huron. Since 1986, lake trout have been stocked on these offshore reefs to reestablish self-sustaining populations. We sampled with beam trawls to determine the abundance of naturally reproduced age-0 lake trout on these offshore reefs during May-July in 1994-1998 and 2000-2002. In total, 123 naturally reproduced lake trout fry were caught at Six Fathom Bank, and 2 naturally reproduced lake trout fry were caught at nearby Yankee Reef. Our findings suggest that this region of Lake Huron contains suitable habitat for lake trout spawning and offers hope that lake trout rehabilitation can be achieved in the main basin of Lake Huron.

DeSorcie, Timothy J.; Bowen, Charles A., II

2003-01-01

388

In Brief: Environmental standards needed for offshore marine aquaculture  

NASA Astrophysics Data System (ADS)

The U.S. Congress should enact legislation that sets strong environmental standards for offshore marine aquaculture, the Marine Aquaculture Task Force recommended in a recent report. Aquaculture now accounts for about half of all seafood consumed in the world, and the industry is rapidly growing and expanding into regions offshore (more than 3 nautical miles from the coast) that are controlled by the federal government. The task force, which was organized by researchers from the Woods Hole Oceanographic Institution, examined the risks and benefits of marine aquaculture. They proposed that the U.S. National Oceanic and Atmospheric Administration be appointed the lead agency responsible for regulation of offshore marine aquaculture and for providing incentives for research and development. The main environmental standard proposed by the task force was to limit farming only to native species with local genetics unless the potential harm of escaped fish to local populations would be negligible.

Zielinski, Sarah

2007-01-01

389

Thermodynamic design of natural gas liquefaction cycles for offshore application  

NASA Astrophysics Data System (ADS)

A thermodynamic study is carried out for natural gas liquefaction cycles applicable to offshore floating plants, as partial efforts of an ongoing governmental project in Korea. For offshore liquefaction, the most suitable cycle may be different from the on-land LNG processes under operation, because compactness and simple operation are important as well as thermodynamic efficiency. As a turbine-based cycle, closed Claude cycle is proposed to use NG (natural gas) itself as refrigerant. The optimal condition for NG Claude cycle is determined with a process simulator (Aspen HYSYS), and the results are compared with fully-developed C3-MR (propane pre-cooled mixed refrigerant) JT cycles and various N2 (nitrogen) Brayton cycles in terms of efficiency and compactness. The newly proposed NG Claude cycle could be a good candidate for offshore LNG processes.

Chang, Ho-Myung; Lim, Hye Su; Choe, Kun Hyung

2014-09-01

390

OCD: The offshore and coastal dispersion model. Volume 2. Appendices  

SciTech Connect

The Offshore and Coastal Dispersion (OCD) Model has been developed to simulate the effect of offshore emissions from point, area, or line sources on the air quality of coastal regions. The OCD model was adapted from the EPA guideline model MPTER (EPA, 1980). Modifications were made to incorporate overwater plume transport and dispersion as well as changes that occur as the plume crosses the shoreline. This is a revised OCD model, the fourth version to date. The volume is an appendices for the OCD documentation, included are three appendices: Appendix A the OCD computer program, Appendix B an Analysis Post-processor, Appendix C Offshore Meteorological data Collection Instrumentation, also included are general References.

DiCristofaro, D.C.; Hanna, S.R.

1989-11-01

391

Acoustic emission of offshore structures, attenuation - noise - crack monitoring  

SciTech Connect

No NDT crack detection methods have up to now proved to be the method which can overrule the others. We shall probably in the future in the offshore industry see a combination of various structure monitoring systems, remotely operated vehicles (ROV) with NDT-equipment and also the use of divers. The author believes that in some 5 - 10 years ROVs will perform much of the routine inspection, and mobile monitoring instrumentation will be concentrated to some hot spot areas, already detected defects or any repairs. The main areas for AE are monitoring of pressure vessels and fibre reinforced plastics. For application on offshore structures some fullscale trials have been performed (with practical problems) as well as some laboratory studies. Norwegian institutions seem to have a leading role today in the research of offshore applications. Norsk Hydro participated in a signature analysis project at Sintef/Veritas some years ago.

Lovaas, S.

1985-01-01

392

The Future of Offshore Wind Energy  

E-print Network

and state pollution laws raise price of fossil electricity #12;9 Market Drivers · Rising and highly volatile energy prices · Increasing demand for energy and RECs · Aging fleet of coal and nuclear plants not easily · Future carbon and pollution costs covered #12;13 Economic Development: Delaware 450 MW Example ·$1

Firestone, Jeremy

393

As Easy as ABC: Re-engineering the Cost Accounting System.  

ERIC Educational Resources Information Center

To be useful for management decision making, the college or university's cost accounting system must capture and measure improvements. Activity-based costing (ABC), which determines more accurately the full costs of services and products, tracks improvements and should proceed alongside reengineering of institutional accounting. Guidelines are…

Trussel, John M.; Bitner, Larry N.

1996-01-01

394

External costs of coastal beach pollution: an hedonic approach  

SciTech Connect

A technique for inputing a monetary value to the loss in beach recreational services that would result from a hypothetical oil spill in the Georges Bank area combines an oil-spill risk analysis model with a hedonic pricing model of the market for tourist accommodations on Cape Cod and Martha's Vineyard. The estimate of beach pollution costs associated with offshore oil development allows a rational judgment of whether the benefits of developing offshore oil outweigh the costs. The method is an effort to improve the economic efficiency of coastal zone management. The report concludes with a discussion of the many sources of uncertainty and suggestions for overcoming them. Five appendices present information on the models, variables, questionnaire responses, beaches, and factor patterns. 7 figures, 27 tables.

Wilman, E.A.

1984-01-01

395

Review of technology for Arctic offshore oil and gas recovery  

SciTech Connect

The technical background briefing report is the first step in the preparation of a plan for engineering research oriented toward Arctic offshore oil and gas recovery. A five-year leasing schedule for the ice-prone waters of the Arctic offshore is presented, which also shows the projected dates of the lease sale for each area. The estimated peak production rates for these areas are given. There is considerable uncertainty for all these production estimates, since no exploratory drilling has yet taken place. A flow chart is presented which relates the special Arctic factors, such as ice and permafrost, to the normal petroleum production sequence. Some highlights from the chart and from the technical review are: (1) in many Arctic offshore locations the movement of sea ice causes major lateral forces on offshore structures, which are much greater than wave forces; (2) spray ice buildup on structures, ships and aircraft will be considerable, and must be prevented or accommodated with special designs; (3) the time available for summer exploratory drilling, and for deployment of permanent production structures, is limited by the return of the pack ice. This time may be extended by ice-breaking vessels in some cases; (4) during production, icebreaking workboats will service the offshore platforms in most areas throughout the year; (5) transportation of petroleum by icebreaking tankers from offshore tanker loading points is a highly probable situation, except in the Alaskan Beaufort; and (6) Arctic pipelines must contend with permafrost, making instrumentation necessary to detect subtle changes of the pipe before rupture occurs.

Sackinger, W. M.

1980-08-01

396

Investigation of an Activity-Based Text-Processing Strategy in Mixed-Age Child Dyads  

ERIC Educational Resources Information Center

The authors examined an activity-based listening strategy with first- and third-grade children in mixed-grade dyads. On the basis of theories of cognitive development and previous research, the authors predicted the following: (a) children in an activity-based strategy would recall more story events compared with those in a repetition strategy and…

Marley, Scott C.; Szabo, Zsuzsanna; Levin, Joel R.; Glenberg, Arthur M.

2011-01-01

397

Learning Activity-Based Ground Models from a Moving Helicopter Platform  

E-print Network

Learning Activity-Based Ground Models from a Moving Helicopter Platform Andrew Lookingbill, David a number of potential benefits. In this paper we demonstrate the ability of activity-based models of individual moving objects, as we shall show in this paper. The acquisition of activity-related models has

Thrun, Sebastian

398

The folly of using RCCs and RVUs for intermediate product costing.  

PubMed

Two measures for computing the cost of intermediate projects--a ratio of cost to charges and relative value units--are highly flawed and can have serious financial implications for the hospitals that use them. Full-cost accounting, using the principles of activity-based costing, enables hospitals to measure their costs more accurately, both for competitive bidding purposes and to manage them more effectively. PMID:17427470

Young, David W

2007-04-01

399

Direct costing  

E-print Network

~ ~ ~ ~ Q ~ ~ 4 ~ 2X XV. Rergalxemeate ef the k. X. C. P. k. the S. Z. C. aal Pmotioes of QyerstLag Ceayeaies Coasting wisest Costi' ~ . 4l 7 %ax keyeots of 2Kreot Costiag . . ~ ~ . SV VXy Coaolasioas ~ ~ ~ ~ e ~ ~ ~ ~ ~ ~ ~ ~ ~ 73 R@iogssphge ~ ~ a...~ methods, Moluding direst oosting, produoe this vaLue. ~ ~Xb d, 2~Hielson, Gswald ~ "How Zireot Costing Works XutexnaXXy and Externally i'or a 8mall ~securer The Journal aa ~naaounaena, Auhuoa, 1953, vahuno 9a, y. 204 ~ a conference on lireot costing...

Browning, Donald Bullock

1960-01-01

400

Brazil`s offshore potential extends beyond the Campos basin  

SciTech Connect

This paper briefly reviews the distribution of oil and gas basins in Brazil and the percentage of offshore versus onshore sites. It reviews the exploration and development history of the industry and the historical production and reserves estimates. The paper goes on to review the geopolitical aspects of oil and gas in the region which is primarily a state-owned industry. It analyzes the market conditions which are creating pressures to allow competition within the oil and gas industry in Brazil. Finally, the paper provides a geologic analysis of the various offshore basins and the resource potential of these basins.

Becker, R.G. [Gustavson Associates Inc., Boulder, CO (United States)

1996-01-08

401

California State Waters Map Series: offshore of Refugio Beach, California  

USGS Publications Warehouse

The offshore part of the map area consists of relatively flat and shallow continental shelf, which dips gently seaward (about 0.8° to 1.0°) so that water depths at the shelf break, roughly coincident with the California’s State Waters limit, are about 80 to 100 m. This part of the Santa Barbara Channel is relatively well protected from large Pacific swells from the north and northwest by Point Conception and from the south and southwest by offshore islands and banks. The shelf is underlain by variable amounts of upper Quaternary marine and fluvial sed

Johnson, Samuel Y.; Dartnell, Peter; Cochrane, Guy R.; Golden, Nadine E.; Phillips, Eleyne L.; Ritchie, Andrew C.; Krigsman, Lisa M.; Dieter, Bryan E.; Conrad, James E.; Greene, H. Gary; Seitz, Gordon G.; Endris, Charles A.; Sliter, Ray W.; Wong, Florence L.; Erdey, Mercedes D.; Gutierrez, Carlos I.; Yoklavich, Mary M.; East, Amy E.; Hart, Patrick E.

2015-01-01

402

Offshore and coastal dispersion (OCD) model. Users guide  

SciTech Connect

The Offshore and Coastal Dispersion (OCD) model was adapted from the EPA guideline model MPTER to simulate the effect of offshore emissions from point sources in coastal regions. Modifications were made to incorporate overwater plume transport and dispersion as well as changes that occur as the plume crosses the shoreline. Hourly meteorological data are needed from overwater and overland locations. Turbulence intensities are used but are not mandatory. For overwater dispersion, the turbulence intensities are parameterized from boundary-layer similarity relationships if they are not measured. Specifications of emission characteristics and receptor locations are the same as for MPTER; 250 point sources and 180 receptors may be used.

Hanna, S.R.; Schulman, L.L.; Paine, R.J.; Pleim, J.E.

1984-09-01

403

Offshore and coastal dispersion (OCD) model. User's guide  

SciTech Connect

The Offshore Coastal Dispersion (OCD) model was adapted from the EPA guideline model MPTER to simulate the effect of offshore emissions from point sources in coastal regions. Modifications were made to incorporate overwater plume transport and dispersion as well as changes that occur as the plume crosses the shoreline. Hourly meteorological data are needed from overwater and overland locations. For overwater dispersion, the turbulence intensities are parameterized from boundary layer similarity relationships if they are not measured. A virtual source technique is used to change the rate of plume growth as the overwater plume intercepts the overland internal boundary layer.

Hanna, S.R.; Schulman, L.L.; Paine, R.J.; Pleim, J.E.

1984-09-01

404

Nonlinear stochastic approach to relative motion for offshore structures  

E-print Network

of relat. ive motion on two ri sers at several water depths of practical i nterest. The mari ne ri ser s were modelled us i ng a pin-pi nned boundary condi ti on. Being a more flexible structure, a marine riser should be more susceptible to the effects... Chairman Of Advisory Committee: Dr. John M. Niedzwecki As offshore industry moves into deepwater areas, the linear analysis of an offshore structure becomes suspect. The structure becomes flexible and the structural response due to the forces creating a...

Sandt, Eric William

1985-01-01

405

Structural option design in JZ20-2 offshore project  

SciTech Connect

In the JZ20-2 Project, ice and earthquakes are the main loads which determine the member sizes of offshore structures. UQ and W platforms are located at same field. The vertical loads of an UQ platform are about two times as much as a W platform, but structural steel weight used by two platforms is about the same. This paper describes the results to be acquired and how to determine reasonably the standard of ice load and the resistance to earthquakes with less stiffness and large mass. This paper presents some useful principles and enlightenment for offshore engineering.

Wang Lianqi [COODEC, Beijing (China)

1993-12-31

406

Troll: Norway's giant offshore gas field  

SciTech Connect

Troll, a giant gas field underlain by an oil rim of variable thickness, is located around 80 km offshore Norway on the northwestern edge of the Horda Platform and adjacent to the eastern margin of the Viking Graben in waters between 300 and 355 m deep. The field extends over four Norwegian Blocks (31/2, 31/3, 31/5, and 31/6) and covers an area of 710 km{sup 2}. Hydrocarbons are trapped in three easterly tilted fault blocks capped by Upper Jurassic to Paleocene clays. The reservoir comprises sediments of the Fensfjord, middle Heather, Sognefjord, and upper Heather formations of the Jurassic Viking Group. Deposition took place as a cyclic shallow-marine sandstone sequence with alternations of transgressive sands and silts and progradational shoreface facies induced by regional sea level fluctuations. The field is split into three communicating hydrocarbon provinces, which coincide with the major fault blocks. In Troll East, a gas cap of up to 250 m overlies a 0-4-m-thin oil rim. In Troll West gas, a maximum gas cap of 210 m covers an oil rim of some 12 m thickness. In Troll West oil, a modest gas column of 43 m caps up to 28 m of oil. The reservoir rock exhibits excellent properties With porosities up to 35%, permeabilities up in the darcy range, and no shale interbeddings. Since the discovery in 1979, 25 exploration and appraisal wells delineated initial in place volumes of 1670 {times} 10{sup 9} Sm{sup 3} free gas and 615 {times} 10{sup 6} m{sup 3} Oil. The field development envisages exploitation of the main gas accumulation in Troll East from a concrete gravity structure as phase one with first gas planned for 1996. Successive development of Troll West Oil could require subsea completions on horizontal wells feeding a floating production platform. The independent Troll-Oseberg gas injection scheme will export first gas in 1991 from a subsea six-slot template located in the south of Troll East for injection in the Oseberg field.

Bolle, L.; Henningfeld, H. (Shell Norsk A.S., Tananger (Norway))

1990-09-01

407

Copper-nickel piping reduces costs, biofouling/corrosion  

SciTech Connect

Seawater piping systems for offshore drilling rigs and platforms are typically plagued by biofouling and/or corrosion, with piping failures occurring in only a few years. Discussed are alternate pipe materials with the emphasis on the testing of a copper-nickel alloy in the Gulf of Mexico. Results show that although initially more expensive, use of this alloy can extend system life to 20 years or more while improving productivity and reducing overall costs when compared to a comparable steel system.

Albaugh, E.K.

1984-11-01

408

Exploring Flexible Strategies in Engineering Systems Using Screening Models Applications to Offshore Petroleum Projects  

E-print Network

to Offshore Petroleum Projects by Jijun Lin B.E., Mechanical Engineering, Beijing University of Aeronautics Flexible Strategies in Engineering Systems Using Screening Models Applications to Offshore Petroleum, such as offshore petroleum exploration and production systems, generally require a significant amount of capital

de Weck, Olivier L.

409

33 CFR 334.905 - Pacific Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Pacific Ocean, offshore of Camp Pendleton, California...AREA REGULATIONS § 334.905 Pacific Ocean, offshore of Camp Pendleton, California...offshore of Camp Pendleton in the Pacific Ocean, San Diego County, California. The...

2011-07-01

410

33 CFR 334.905 - Pacific Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Pacific Ocean, offshore of Camp Pendleton, California...AREA REGULATIONS § 334.905 Pacific Ocean, offshore of Camp Pendleton, California...offshore of Camp Pendleton in the Pacific Ocean, San Diego County, California. The...

2010-07-01

411

33 CFR 334.905 - Pacific Ocean, offshore of Camp Pendleton, California; Fallbrook restricted area.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Pacific Ocean, offshore of Camp Pendleton, California...AREA REGULATIONS § 334.905 Pacific Ocean, offshore of Camp Pendleton, California...offshore of Camp Pendleton in the Pacific Ocean, San Diego County, California. The...

2013-07-01

412

Photoresponses of larval Atlantic menhaden ( Brevoortia tyrannus Latrobe) in offshore and estuarine waters: implications for transport  

Microsoft Academic Search

This study tested the hypothesis that Atlantic menhaden (Brevoortia tyrannus Latrobe) larvae have separate behaviors in offshore and estuarine waters that are evoked by chemical cues in these waters. Atlantic menhaden spawn offshore, and larvae are transported shoreward where they metamorphose after entering estuaries. Field studies suggest that during the day larvae are at moderate depths offshore and less abundant

Richard B. Forward; John S. Burke; Daniel Rittschof; James M. Welch

1996-01-01

413

75 FR 17755 - Certificate of Alternative Compliance for the Offshore Supply Vessel GULF TIGER  

Federal Register 2010, 2011, 2012, 2013, 2014

...Compliance for the Offshore Supply Vessel GULF TIGER AGENCY: Coast Guard, DHS. ACTION: Notice...issued for the offshore supply vessel GULF TIGER as required by 33 U.S.C. 1605(c...issued for the h offshore supply vessel GULF TIGER. Full compliance with 72 COLREGS and...

2010-04-07

414

Three-Dimensional Seismic Study of Pluton Emplacement, Offshore Northwestern New Zealand  

E-print Network

Three-Dimensional Seismic Study of Pluton Emplacement, Offshore Northwestern New Zealand Jason A Emplacement, Offshore Northwestern New Zealand Jason A. Luke Department of Geological Sciences Master of Science Detailed 3D seismic images of a volcano-plutonic complex offshore northwestern New Zealand

Seamons, Kent E.

415

75 FR 17755 - Certificate of Alternative Compliance for the Offshore Supply Vessel C-ATLAS  

Federal Register 2010, 2011, 2012, 2013, 2014

...Compliance for the Offshore Supply Vessel C-ATLAS AGENCY: Coast Guard, DHS. ACTION: Notice...issued for the offshore supply vessel C-ATLAS as required by 33 U.S.C. 1605(c...issued for the offshore supply vessel C-ATLAS. Full compliance with 72 COLREGS and...

2010-04-07

416

BIOLOGY OF OFFSHORE HAKE, MERLUCCIUS ALBIDUS, IN THE GULF OF MEXICO!  

E-print Network

BIOLOGY OF OFFSHORE HAKE, MERLUCCIUS ALBIDUS, IN THE GULF OF MEXICO! BENNIE A. ROHR AND ELMER J. GUTHERZ2 ABSTRACT Biological data of the offshore hake, Merluccius albidus, in the Gulf of MexicoM. albidus suggests that offshore hake do not move far off the bottom in pursuit of prey. Density estimates

417

75 FR 26783 - Certificate of Alternative Compliance for the Offshore Supply Vessel JOSHUA CANDIES  

Federal Register 2010, 2011, 2012, 2013, 2014

...for the Offshore Supply Vessel JOSHUA CANDIES AGENCY: Coast Guard, DHS. ACTION...for the offshore supply vessel JOSHUA CANDIES as required by 33 U.S.C. 1605(c...for the offshore supply vessel JOSHUA CANDIES, O.N. 1219732. Full compliance...

2010-05-12

418

75 FR 26783 - Certificate of Alternative Compliance for the Offshore Supply Vessel PEYTON CANDIES  

Federal Register 2010, 2011, 2012, 2013, 2014

...for the Offshore Supply Vessel PEYTON CANDIES AGENCY: Coast Guard, DHS. ACTION...for the offshore supply vessel PEYTON CANDIES as required by 33 U.S.C. 1605(c...for the offshore supply vessel PEYTON CANDIES, O.N. 1219737. Full compliance...

2010-05-12

419

75 FR 32802 - Certificate of Alternative Compliance for the Offshore Supply Vessel ROSS CANDIES  

Federal Register 2010, 2011, 2012, 2013, 2014

...Compliance for the Offshore Supply Vessel ROSS CANDIES AGENCY: Coast Guard, DHS. ACTION...issued for the offshore supply vessel ROSS CANDIES as required by 33 U.S.C. 1605(c...issued for the offshore supply vessel ROSS CANDIES, O.N. 1222260. Full compliance...

2010-06-09

420

A joint location and outsourcing sustainability analysis for a strategic offshoring decision  

Microsoft Academic Search

With economic globalisation and the emergence of extended enterprises derived from interrelationships among organisations, there has been a steady increase in offshore outsourcing activities. Subsequently, the strategic importance of offshoring decisions is important. Traditional offshoring decisions mainly emphasise outsourcee (supplier) selection problems, with their focus upon economic factors. Sustainability, which has recently been regarded as a competitive necessity in most

Yijie Dou; Joseph Sarkis

2010-01-01

421

Moving Cages Further Offshore: Effects on Southern Bluefin Tuna, T. maccoyii, Parasites, Health and Performance  

Microsoft Academic Search

The effects of offshore aquaculture on SBT health (particularly parasitic infections and haematology) and performance were the main aim of this study. Two cohorts of ranched Southern Bluefin tuna (SBT) (Thunnus maccoyii) were monitored throughout the commercial season, one maintained in the traditional near shore tuna farming zone and one maintained further offshore. SBT maintained offshore had reduced mortality, increased

Nicole T. Kirchhoff; Kirsty M. Rough; Barbara F. Nowak; Howard Browman

2011-01-01

422

Trophic connections in Lake Superior Part I: The offshore fish community  

Microsoft Academic Search

Detailed diet linkages within the offshore (>80m bathymetric depth) food web of Lake Superior are currently not well identified. We used analyses of fish stomach contents to create an empirically based food web model of the Lake Superior offshore fish community. Stomachs were collected seasonally (spring, summer, and fall) from nine offshore locations in 2005, using bottom and midwater trawls.

Allison E. Gamble; Thomas R. Hrabik; Jason D. Stockwell; Daniel L. Yule

2011-01-01

423

Outsourcing and Offshoring of Business Services: Challenges to Theory, Management and Geography of Innovation  

Microsoft Academic Search

Massini S. and Miozzo M. Outsourcing and offshoring of business services: challenges to theory, management and geography of innovation, Regional Studies. Drawing on an original survey, this paper discusses the trends and challenges posed by the outsourcing and offshoring of business services. It documents and analyses the increasing offshoring of business services (administrative services, call centres, information technology services, procurement,

Silvia Massini; Marcela Miozzo

2010-01-01

424

Project GOSAP (PP-USA.1): Gulf offshore satellite applications project  

NASA Technical Reports Server (NTRS)

The Gulf offshore satellite applications project (GOSAP) was carried out in order to determine how best to use remote sensing technology to address offshore problems and operations faced by marine engineering organizations. The potentials of satellite-based offshore exploration, ocean engineering and environmental applications using combined satellite and airborne measurements are investigated. The applications include the detection of oil slicks.

Biegert, E. K.; Baker, R. N.; Sailor, R. V.; Shaudt, K. E.; MacDonald, I. R.; Tapley, B.; Shum, C. K.; Amos, J.; Berry, J. L.; Hess, J.

1996-01-01

425

Offshore Wind Power: Science, engineering, and policy MAST 628-010, Fall 2008  

E-print Network

Offshore Wind Power: Science, engineering, and policy MAST 628-010, Fall 2008 Revised 10 October, plan, regulate, and develop offshore wind resources for large-scale power production. Offshore wind and mechanical engineering aspects of wind turbines and power transmission; · Connecting wind electricity

Firestone, Jeremy

426

| | | | |Monday, July 16, 2012 Three Northeast Ohio offshore wind power projects  

E-print Network

| | | | |Monday, July 16, 2012 Home Three Northeast Ohio offshore wind power projects secure federal money By SCOTT SUTTELL 1:52 pm, September 9, 2011 Three Northeast Ohio offshore wind power." Three Northeast Ohio offshore wind power projects secure federal money... http

Rollins, Andrew M.

427

Offshore Wind Jobs and Economic Development Impact: Four Regional Scenarios (Presentation)  

SciTech Connect

NREL's Jobs and Economic Development Impact (JEDI) Model for Offshore Wind, is a computer tool for studying the economic impacts of fixed-bottom offshore wind projects in the United States. This presentation provides the results of an analysis of four offshore wind development scenarios in the Southeast Atlantic, Great Lakes, Mid-Atlantic, and Gulf of Mexico regions.

Tegen, S.

2014-11-01

428

75 FR 12560 - Certificate of Alternative Compliance for the Offshore Supply Vessel BUMBLE BEE  

Federal Register 2010, 2011, 2012, 2013, 2014

...Compliance for the Offshore Supply Vessel BUMBLE BEE AGENCY: Coast Guard, DHS. ACTION: Notice...issued for the offshore supply vessel BUMBLE BEE as required by 33 U.S.C. 1605(c...issued for the offshore supply vessel BUMBLE BEE, O.N. 1218416. Full compliance...

2010-03-16

429

75 FR 20371 - Certificate of Alternative Compliance for the Offshore Supply Vessel LEBOUEF TIDE  

Federal Register 2010, 2011, 2012, 2013, 2014

...for the Offshore Supply Vessel LEBOUEF TIDE AGENCY: Coast Guard, DHS. ACTION: Notice...for the offshore supply vessel LEBOUEF TIDE as required by 33 U.S.C. 1605(c...for the offshore supply vessel LEBOUEF TIDE. The horizontal distance between the...

2010-04-19

430

A Matter of Coherence: The Effects of Offshoring of Intangibles on Firm Performance  

Microsoft Academic Search

Offshoring of intangibles is a global production strategy based on the decision to externalize intangible activities to foreign countries. In the present work we test the existence of a positive relationship between offshoring intangibles and firm performance. To reap the full benefit of offshoring, firms are required to integrate and coordinate activities and knowledge; integration and coordination become difficult when

Federica Ceci; Francesca Masciarelli

2010-01-01

431

St h ti d i l i fStochastic dynamic analysis of offshore wind turbines  

E-print Network

1 St h ti d i l i fStochastic dynamic analysis of offshore wind turbines ­ with emphasis on fatigue analysis of offshore bottom-fixed wind turbines · Modelling and dynamic analysis of floating wind turbines ­ Stochastic dynamic analysis of offshore wind turbines; mooring system for wave energy converters · 2010 8

Nørvåg, Kjetil

432

Tectonic wedging along the rear of the offshore Taiwan accretionary prism  

E-print Network

Tectonic wedging along the rear of the offshore Taiwan accretionary prism Wu-Cheng Chia,b,*, Donald the rear of the offshore Taiwan accretionary prism were studied using seismic reflection profiling and gravity modeling. Deformation between the offshore prism and forearc basin at the point of incipient

Chi, Wu-Cheng

433

History of Oceanography in the Offshore Waters of the Gulf of Maine  

E-print Network

6 History of Oceanography in the Offshore Waters of the Gulf of Maine by John B. Colton, Jr. McKeman, Dnpcio, History of Oceanography in the Offshore Waters of the Gulf of Maine by JOHN B Acknowledgments. Literature cited ·· 111 Page 2 13 13 13 #12;History of Oceanography In the Offshore Waters

434

75 FR 53323 - Certificate of Alternative Compliance for the Offshore Supply Vessel LYMAN MARTIN  

Federal Register 2010, 2011, 2012, 2013, 2014

...Compliance for the Offshore Supply Vessel LYMAN MARTIN AGENCY: Coast Guard, DHS. ACTION...issued for the offshore supply vessel LYMAN MARTIN as required by 33 U.S.C. 1605(c...issued for the offshore supply vessel LYMAN MARTIN, O.N. 11227085. The horizontal...

2010-08-31

435

Cost Control  

ERIC Educational Resources Information Center

Education administrators involved in construction initiatives unanimously agree that when it comes to change orders, less is more. Change orders have a negative rippling effect of driving up building costs and producing expensive project delays that often interfere with school operations and schedules. Some change orders are initiated by schools…

Foreman, Phillip

2009-01-01

436

Determination of VA health care costs.  

PubMed

In the absence of billing data, alternative methods are used to estimate the cost of hospital stays, outpatient visits, and treatment innovations in the U.S. Department of Veterans Affairs (VA). The choice of method represents a trade-off between accuracy and research cost. The direct measurement method gathers information on staff activities, supplies, equipment, space, and workload. Since it is expensive, direct measurement should be reserved for finding short-run costs, evaluating provider efficiency, or determining the cost of treatments that are innovative or unique to VA. The pseudo-bill method combines utilization data with a non-VA reimbursement schedule. The cost regression method estimates the cost of VA hospital stays by applying the relationship between cost and characteristics of non-VA hospitalizations. The Health Economics Resource Center uses pseudo-bill and cost regression methods to create an encounter-level database of VA costs. Researchers are also beginning to use the VA activity-based cost allocation system. PMID:15095549

Barnett, Paul G

2003-09-01

437

MARINE INSTITUTE Offshore Safety and Survival Centre (OSSC)  

E-print Network

MARINE INSTITUTE Offshore Safety and Survival Centre (OSSC) Fisheries and Marine Institute Memorial[ ] No [ ] Have you ever attended Marine Institute or Memorial University of Newfoundland? Yes[ ] No[ ] Please [ ] Specialized Oil Tanker Safety [ ] WHMIS [ ] Marine Basic First Aid (MBFA) [ ] Oil & Chemical Tanker

Oyet, Alwell

438

A conceptual offshore oil and gas process accident model  

Microsoft Academic Search

The purpose of this paper is to present and discuss an accident prevention model for offshore oil and gas processing environments. The accidents that are considered in this work relate specifically to hydrocarbon release scenarios and any escalating events that follow. Using reported industry data, the elements to prevent an accident scenario are identified and placed within a conceptual model

M. F. Kujath; P. R. Amyotte; F. I. Khan

2010-01-01

439

Offshore Petroleum Resource Development and Marine Mammals: A Review and  

E-print Network

Offshore Petroleum Resource Development and Marine Mammals: A Review and Research Recommendations J with all phases of petroleum exploration and production. The physical, physiological, and behavioral ef to cause acute toxicity. However, the long- term effects of accumulation of petroleum basic data needed

440

LATE QUATERNARY EVOLUTION OF THE NORTHEAST FAN, OFFSHORE NOVA SCOTIA  

E-print Network

LATE QUATERNARY EVOLUTION OF THE NORTHEAST FAN, OFFSHORE NOVA SCOTIA Matthew Robichaud Submitted of Earth Sciences Dalhousie University, Halifax, Nova Scotia March 2006 #12;jt Dalhousie University Department of Earth Sciences Halifax, Nova Scotia Canada B3H 3|5 (902) 494-2358 FAX 1902) 494-f>8«9 DATE

Beaumont, Christopher

441

GEOPHYSICAL CORRELATION OF ONSHORE AND OFFSHORE GEOLOGY, SOUTHWESTERN NOVA SCOTIA  

E-print Network

GEOPHYSICAL CORRELATION OF ONSHORE AND OFFSHORE GEOLOGY, SOUTHWESTERN NOVA SCOTIA by Virginia I, Honours at Dalhousie University Halifax, Nova Scotia March 2006 #12;- i - ABSTRACT The geology of southwestern Nova Scotia is characterized by plutons of varying compositions intruding a Meguma host rock

Beaumont, Christopher

442

Northwest Sumatra and Offshore Islands Field Survey after the December  

E-print Network

Northwest Sumatra and Offshore Islands Field Survey after the December 2004 Indian Ocean Tsunami as much as 10 m at 1,500 m inland. Extensive tsunami deposits, primarily composed of sand and typically 5,200­1,300 km segment of inter- a United States Geological Survey Pacific Science Center, 400 Natural Bridges

443

Offshore Hedge Funds: Survival and Performance 1989-1995  

Microsoft Academic Search

We examine the performance of the offshore hedge fund industry over the period 1989 through 1995 using a database that includes defunct as well as currently operating funds. The industry is characterized by high attrition rates of funds and little evidence of differential manager skill. We develop endogenous style categories for relative fund performance measures and find that repeat-winner and

Stephen J. Brown; William N. Goetzmann; Roger G. Ibbotson

1997-01-01

444

Anchor deployment for deep water floating offshore equipments  

Microsoft Academic Search

In this work a planning methodology for deep water anchor deployment in offshore platforms and floating production systems aiming at operational resources optimization is explored, by minimizing a multi criteria objective function. As an additional advantage provided by the proposed methodology, planning automation is achieved. Planning automation overcomes the traditional way, using a trial error basis. With it, an engineer,

O. B. Augusto; B. L. Andrade

2003-01-01

445

MELTING OF NORM - CONTAMINATED EQUIPMENT OF AN OFFSHORE OIL PLATFORM  

Microsoft Academic Search

About 6000 offshore plants for oil and natural gas exploration are world wide in operation. 640 are located in the North Sea and North Atlantic area, 60 of which have been shut down so far. The contamination of these installations with heavy metals e. g. mercury and NORM requires an ecologically disposal concept. The Continental Netherlands Oil Company B. V.

M. Sappok; U. Quade; T. Kluth

446

4. LIGHTHOUSE SITE OFFSHORE AT MOUTH OF FEDERAL CHANNEL, AND ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

4. LIGHTHOUSE SITE OFFSHORE AT MOUTH OF FEDERAL CHANNEL, AND WEST END OF NORTH TRAINING WALL, LOOKING SOUTHEAST FROM THE WATER TOWARD THE BUILDINGS OF THE FORMER ALAMEDA NAVAL AIR STATION, ALONG THE SOUTH SIDE. - Oakland Harbor Training Walls, Mouth of Federal Channel to Inner Harbor, Oakland, Alameda County, CA

447

Higher Skills and the Knowledge Economy: The Challenge of Offshoring  

ERIC Educational Resources Information Center

Recent economics literature on offshoring highlights the trend towards the relocation of high-skill jobs to emerging economies. This evolution presents a challenge to the established knowledge economy discourse on which the relationship between higher education, higher skills, higher productivity and higher incomes has been based. This paper…

Craig, John; Gunn, Andrew

2010-01-01

448

Measurement and Reduction of Offshore Wind Turbine Construction Noise  

Microsoft Academic Search

Summary Both operation and construction of offshore wind turbines induce underwater noise. While it is not yet clear if operating noise affects the behavior of marine animals, construction noise is considered crucial. Common foundation techniques require to drive steel tubes up to 30 m into the seabed. In general, hydraulic pile hammers are used for this purpose. During the erection

Karl-Heinz Elmer; Wolf-Jürgen Gerasch

2006-01-01

449

Measurement and Reduction of Offshore Wind Turbine Construction Noise  

Microsoft Academic Search

Summary Both operation and construction of offshore wind turbines induce underwater noise. While it is not yet clear if operating noise affects the behavior of marine animals, construction noise is considered crucial. Common foun- dation techniques require to drive steel tubes up to 30 m into the seabed. In general, hydraulic pile hammers are used for this purpose. During the

Externer Artikel

450

10 Solar powerplants. gas turbines packaged for offshore gas platform  

Microsoft Academic Search

Weatherby Engineering Co. neared completion recently of 8 modules mounting a total of 9 gas turbine engines, all destined for an offshore gas injection platform. The platform capacity is 80 MMcfd. The inlet pressure on the platform is 45 psig and the discharge pressure is 3,410 psig. The system constitutes a complete gas dehydration and compressor station and the modules

Alberte

1976-01-01

451

Finite element analysis of tensegrity structures in offshore aquaculture installations  

Microsoft Academic Search

Aquaculture is the fastest growing food producing sector in the world. Considerable interest exists in developing open ocean aquaculture in response to a shortage of suitable, sheltered inshore locations and possible husbandry advantages of oceanic sites such as increased water quality and oxygen supply, which improve production efficiency and the quality of fish. The extreme weather conditions experienced offshore leads

Østen Jensen; Anders Sunde Wroldsen; Pål Furset Lader; Arne Fredheim; Mats Heide

2007-01-01

452

A remote acoustic monitoring system for offshore aquaculture fish cage  

Microsoft Academic Search

Offshore fish cage culture is being popularized in China. However, it is difficult to observe fish activity and the status of the net cage by naked eye because of the deep and turbid sea water. Aquaculture farmers, therefore, need a way to remotely observe fish activity and the status of the net cage on a regular basis without having to

Xiaomei Xu; Xiaokang Zhang

2007-01-01

453

ENVIRONMENTAL ISSUES ASSOCIATED WITH OFFSHORE AQUACULTURE & MODELING POTENTIAL IMPACT  

Microsoft Academic Search

ABSTRACT Real and perceived aquaculture environmental impacts that must be considered prior to expansion to open ocean locations include: 1) benthic carbon loading, 2) water column nutrification, 3) stim- ulation of harmful algal blooms, and 4) escapement and implications to wild populations. Asim- ulation model was developed for predicting the benthic impacts from offshore cage culture. The model simulates the

Ralf Riedel; Christopher J. Bridger

454

Situation awareness and safety in offshore drill crews  

Microsoft Academic Search

In many industrial settings, the situation awareness (SA) of workers needs to be maintained at a high level to ensure the safety of their operation. This is particularly relevant to offshore oil-drilling and gas-drilling crews, given the interactive and hazardous nature of their work. This paper presents a review of SA in drilling incidents and results from interviews with oil

Anne Sneddon; Kathryn Mearns; Rhona Flin

2006-01-01

455

Prediction of Weather Operating Windows for Offshore Drilling Vessels  

Microsoft Academic Search

A management 'tool' for predicting Weather Operating Windows for offshore drilling operations has been developed and tested for the dynamic positioning drillship PETREL. It is shown that two measures are required in making such an assessment: the persistence of vessel heave response as it affects drilling operations and the probable downtimes with respect to each drilling operation throughout the year

J. G. Hayes; M. S. Hirt; D. G. McGillivray; Bill Nicholls; Robert Waymouth; Boris Weisman

1983-01-01

456

Method and system for escaping from an offshore drilling platform  

Microsoft Academic Search

Improvements in a system for escaping from an offshore drilling or production platform in an emergency situation which includes a stable floating structure forming a safe haven anchored near but at a safe distance from the platform, an aerial cableway extending between the platform and the haven, and a personnel carrier movable along the cableway. The principal improvement is that

R. A. Flautt; C. M. Leavitt; R. H. Reynoir

1981-01-01

457

Safety of dynamic positioning operations on mobile offshore drilling units  

Microsoft Academic Search

Dynamic positioning of mobile offshore drilling units for drilling operation (termed as DP drilling operation) is analyzed in this paper. A safety modeling approach based on the barrier concept is developed. Safety of DP drilling operation is modeled in terms of three main barrier functions, i.e. barrier functions to prevent loss of position, to arrest vessel movement and to prevent

Haibo Chen; Torgeir Moan; Harry Verhoeven

2008-01-01

458

Operators, service companies improve horizontal drilling accuracy offshore  

SciTech Connect

Continuing efforts to get more and better measurement and logging equipment closer to the bit improve accuracy in offshore drilling. Using current technology, both in measurement while drilling and logging while drilling, a target can consistently be hit within five vertical feet.

Lyle, D.

1996-04-01

459

76 FR 62817 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013, 2014

...related to safety of operations and other matters affecting the oil and gas offshore industry. The meeting will be open to the...The meeting will be held at Hilton Houston NASA Clear Lake, Discovery Ballroom, 3000 NASA Road One, Houston, Texas,...

2011-10-11

460

Development and evaluation of the offshore and coastal dispersion model  

SciTech Connect

The Offshore and Coastal Dispersion (OCD) model has been developed for the Minerals Management Service (MMS) to determine the impact of offshore and onshore emissions from point sources on the air quality of coastal regions. Constructed on the framework of the EPA guideline model MPTER, the OCD model incorporates overwater plume transport and dispersion as well as changes that occur as the plume crosses the shoreline. Hourly meteorological data are needed from both offshore and onshore locations, including wind direction and speed, mixing height, overwater air temperature and relative humidity, and the sea surface temperature. Observed turbulence intensities are preferred by the model but are not mandatory. Dispersion coefficients are proportional to turbulence intensities. A virtual source technique is used to change the rate of plume growth as the overwater plume intercepts the overland internal boundary layer. The continuous shoreline fumigation case is treated using an approach suggested by Deardorff and Willis. Calculation of plume reflection from elevated terrain follows the Rough Terrain Dispersion Model (RTDM). The OCD model and the modified EPA model used as an interim model for overwater applications by the MMS were tested with measurements from three offshore tracer experiments. The OCD model was shown to be a clear improvement over the EPA model and was officially approved by the MMS in March 1985.

Hanna, S.R.; Schulman, L.L.; Paine, R.J.; Pleim, J.E.; Baer, M.

1985-10-01

461

Offshore-windenergienutzung in Europa und vor deutschen Küsten  

NASA Astrophysics Data System (ADS)

Following several European countries, especially Denmark and the Netherlands, which are planning offshore wind parks of several 100 MW, also German private investors have started such initiatives. A particularly promising 500 MW project in the North Sea, near Helgoland, is in the planning stage. Especially approval-related questions are discussed here.

Carstensen, Uwe Thomas

1999-12-01

462

IN THE DESIGN OF SUPPORT STURCTURES FOR OFFSHORE WIND TURBINES  

Microsoft Academic Search

SUMMARY Aerodynamic damping can have a large impact on the lifetime of the support structure of an offshore wind turbine since it can reduce fatigue significantly. When performing fatigue calculations in the frequency domain, as proposed in another paper to this conference, the aerodynamic damping ratio is required as an input parameter. A theoretic approach that was developed for constant

D. J. Cerda Salzmann; J. van der Tempel

463

A drilling model for young offshore Louisiana and Texas trends  

SciTech Connect

A new type of model specifically designed to aid in the planning and drilling of young offshore Louisiana and Texas wells is presented. The model is composed of functions to represent changing drilling mechanics, as well as changing drillabilities with respect to depth, area, and formation type.

Smalling, D.A.; Meyers, R.L. II

1988-06-01

464

Bathymetry Offshore Sumatra First Comprehensive map of International Data Sets  

Microsoft Academic Search

Knowledge of the bathymetry offshore Sumatra is of great importance for geohazard risk assessment, modelling of tsunami runup heights and development of tsunami early warning systems as well as for the general understanding of plate boundary processes and morphotectonic features. Since the devastating December 26, 2004 Sumatra-Andaman Islands earthquake and tsunami a number of marine expeditions, funded by Canada, France,

C. Gaedicke; S. Ladage; W. Soh; W. Weinrebe; D. R. Tappin; T. Henstock; L. McNeill; J. Sibuet; F. Klingelhoefer; S. Singh; E. Flueh; Y. Djajadihardja

2006-01-01

465

Proceedings of the 22nd annual offshore technology conference  

SciTech Connect

This book contains the proceedings of the 22nd annual offshore technology conference, Volume 3. Topics covered include: Innovation in concrete gravity platform substructures; the Ravensburn north platform and beyond; Development of the ROV - replaceable control valves; Structure-induced seafloor scour; Vessel impact design for steel jackets; and A new approach for finger storage slug catcher design.

Not Available

1990-01-01

466

Offshore Oil Drilling: Buying Energy Independence or Buying Time?  

ERIC Educational Resources Information Center

This article addresses the issues and concerns about offshore oil drilling in the United States. The demand for energy is going up, not down, and for a long time, even as alternative sources of energy are developed, more oil will be needed. The strongest argument against drilling is that it could distract the country from the pursuit of…

Baird, Stephen L.

2008-01-01

467

U.S. Energy Demand, Offshore Oil Production and  

E-print Network

U.S. Energy Demand, Offshore Oil Production and BP's Macondo Well Spill Tad Patzek, Petroleum that run the U.S. Complexity, models, risks Gulf of Mexico's oil and gas production Conclusions ­ p.3/4 #12;Summary of Conclusions. . . The global rate of production of oil is peaking now, coal will peak in 2

Patzek, Tadeusz W.

468

The world's offshore continental margins contain vast reserves of  

E-print Network

The world's offshore continental margins contain vast reserves of gas hydrate, a frozen form of nat- tor of 2 or more. Understanding marine hydrate systems has become critical for long-term worldwide-seafloor geology. Increasing use of marine multicomponent seismic technol- ogy by oil and gas companies now allows

Texas at Austin, University of

469

Globalization and Offshoring of Software Moshe Y. Vardi  

E-print Network

with it. · It's like winter; you cannot stop it, but you can dress warmly. · It is easy to measureGlobalization and Offshoring of Software Moshe Y. Vardi Rice University #12;Whoosh . . . · 1992, Europeans 2 #12;Early Decisions · Co-chairs: Mayadas+Vardi. Editor: Aspray · Global perspective · Secondary

Vardi, Moshe Y.

470

Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm  

E-print Network

#12;Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm 2004 Survey Report No. 1 March : Simon B. Leonhard #12;Horns Rev. Hard Bottom Substrate Monitoring 2004 Survey Report No. 1. Page 3 Doc ........................................................................................................................ 15 #12;Horns Rev. Hard Bottom Substrate Monitoring 2004 Survey Report No. 1. Page 4 Doc. No. 2438

471

Innovative electric thrusters power a new ROV for offshore operations  

Microsoft Academic Search

A new electric work-class remotely operated vehicle (ROV) has been designed to provide the offshore industry with a more capable and less expensive alternative for performing deepwater construction, inspection and maintenance tasks. The ROV, coined the Quest, delivers equivalent or superior performance to current work-class systems, but is smaller and lighter and can be easily configured for a wide range

1999-01-01

472

Reliability data analysis and modelling of offshore oil platform plant  

Microsoft Academic Search

This paper reports on the reliability data analysis and modelling of offshore oil platform plant. We first analysed the effectiveness of preventive maintenance to the plant concerned, and then identified the key sub-units and major preventive maintenance activities to be modelled. A modelling technique called the delay time is then used to determine the optimal periodic inspection intervals. The analysis

W. Wang; H. B. A. Majid

2000-01-01

473

The maturation of the Russian offshore software industry  

Microsoft Academic Search

In the decade of the 1990s, India leapt ahead of all other competitors for offshore programming business, giving the impression that Russia had not lived up to its potential. This paper uses case studies of firms and clients and available literature to investigate what Russia has achieved so far, what bottlenecks and hindrances have prevented it from going further, and

Stephen Hawk; William McHenry

2005-01-01

474

Public opinion about large offshore wind power: Underlying factors  

Microsoft Academic Search

This paper address factors underlying public opinion regarding offshore wind power based on a survey of residents near a proposed development off Cape Cod, MA, USA. Supporters are found to be younger, better educated, and more likely to own their own home. Opponents are more likely to earn over $200,000\\/year, and more likely to expect to see the project from

Jeremy Firestone; Willett Kempton

2007-01-01

475

Managing Offshore Branch Campuses: An Analytical Framework for Institutional Strategies  

ERIC Educational Resources Information Center

The aim of this article is to develop a framework that encapsulates the key managerial complexities of running offshore branch campuses. In the transnational higher education (TNHE) literature, several managerial ramifications and impediments have been addressed by scholars and practitioners. However, the strands of the literature are highly…

Shams, Farshid; Huisman, Jeroen

2012-01-01

476

A power conversion system for offshore wind parks  

Microsoft Academic Search

This article presents a power conversion system for offshore wind parks based on a high voltage generation, high frequency AC link with bidirectional switches and DC power collection and transmission to shore. All the converters are located in the nacelle of the wind turbines and the turbines are connected in series on the output side of the AC\\/DC converter and

Anne Berit Mogstad; Marta Molinas; Paal Keim Olsen; Robert Nilsen

2008-01-01

477

Development of a mature giant offshore oil field  

SciTech Connect

The Teak field, a mature oil field offshore southeast Trinidad, has produced 266 million bbl oil since 1972. Production is from Pliocene sandstone reservoirs in a complexly faulted anticline. This paper summarizes the history and geology of Teak field, describes its oil-producing reservoirs, and discusses the mature-field development strategy used since 1988, including case histories of two 1989 development prospects.

Lantz, J.R.; Ali, N. (Amoco Production Co. (US))

1991-04-01

478

Offshore finfish mariculture in the Strait of Juan de Fuca  

SciTech Connect

Finfish mariculture has existed in the U.S. Pacific Northwest for over thirty years, but for the past 15 years most effort has focused on culture of Atlantic salmon in protected, inshore cage sites. The Strait of Juan de Fuca (the "Strait") is a large area with relatively sparce shoreline development and several apparent advantages for mariculture using offshore technology.

Rensel, Jack; Kiefer, Dale; Forster, John R.; Woodruff, Dana L.; Evans, Nathan R.

2007-10-07

479

Transnational Higher Education: Offshore Campuses in the Middle East  

ERIC Educational Resources Information Center

This paper maps the landscape of transnational higher education in the Middle East, focusing in particular on the recent expansion of satellite, branch, and offshore educational institutions and programs that foreign institutions have set up in the region. Of the estimated 100 branch campuses currently operating worldwide, over one-third are in…

Miller-Idriss, Cynthia; Hanauer, Elizabeth

2011-01-01

480

Water Transportation Demand and Berth Allocation of Offshore Airport  

Microsoft Academic Search

Constructing offshore airport is the development trend of coastal countries. Although this type of airport has advantages such as saving land resources, reducing urban pollution, improving takeoff and landing safety, the transportation connection between the airport and adjacent areas is weakened significantly, which affects the operational efficiency of the airport. Furthermore, the occurrence of natural disasters or certain extreme circumstances

Wang Nuo; Zhao Bing; Shi Lei; Yang Chunxia

2009-01-01

481

OFFSHORE OIL AND GAS EXTRACTION - AN ENVIRONMENTAL REVIEW  

EPA Science Inventory

Reported are the results of an environmental review of emission sources and emissions associated with U.S. offshore oil and gas exploration, drilling, and production. In the information reviewed, greatest environmental concern was with accidental spills of oil that can occur duri...

482

Software Development Offshoring Competitiveness: A Case Study of ASEAN Countries  

ERIC Educational Resources Information Center

With the success of offshoring within the American software industry, corporate executives are moving their software developments overseas. The member countries of the Association of Southeast Asian Nations (ASEAN) have become a preferred destination. However, there is a lack of published studies on the region's software competitiveness in…

Bui, Minh Q.

2011-01-01

483

Proceedings of the 22nd annual offshore technology conference  

SciTech Connect

This book contains the proceedings of the 22nd annual offshore technology conference, volume 4. Topics covered include: axial load capacity of steel piles in sand; hydrodynamic aspects of flexible riser; a deepwater test of subsea wirelining techniques; and soil reaction to axially loaded piles.

Not Available

1990-01-01

484

Routing helicopters for crew exchanges on off-shore locations  

Microsoft Academic Search

This paper deals with a vehicle routing problem with split demands, namely the problem of determining a flight schedule for helicopters to off-shore platform locations for exchanging crew people employed on these platforms. The problem is formulated as an LP model and solved by means of a column-generation technique including solving TSP problems. Since the final solution needs to be

Gerard Sierksma; Gert A. Tijssen

1998-01-01

485

Teachers' professional knowledge: Tensions within the accounts of offshore instruction  

Microsoft Academic Search

This paper comes from a larger study that seeks to develop understandings about the knowledge bases of eductors working in offshore contexts. In particular it focuses on interview accounts from teachers employed in Australian-owned institutions in Central Java, Indonesia. This paper highlights emerging tensions in these accounts as the teachers encounter multiple and sometimes conflicting expectations of the knowledge bases

Beryl Exley

2001-01-01

486

Silica Depletion in Lake Victoria: Sedimentary Signals at Offshore Stations  

Microsoft Academic Search

Six short sediment cores from offshore stations in Lake Victoria (East Africa) were analyzed for evidence of recent change in the lake's pelagic ecosystem. Three stations were located on a NW-SE transect between 48 m water depth, near the present upper limit of seasonal hypolimnetic oxygen depletion, and the deepest point of Lake Victoria at 68 m. Four stations formed

Dirk Verschuren; David N. Edgington; Hedy J. Kling; Thomas C. Johnson

1998-01-01

487

Sea ice and icing risk for offshore wind turbines  

Microsoft Academic Search

There are two important issues related to wind turbines performances in offshore sites that locate in cold cli- mates: sea ice (flows, driving ice, land-fast ice) and the presence of atmospheric icing (due to water in the air as in-cloud operation, rainfall and sea sprays) which may potentially lead to ice formation on turbines' struc- tures. Icing of rotor blades

L. Battisti; R. Fedrizzi; A. Brighenti; T. Laakso

488

Electric power from offshore wind via synoptic-scale interconnection  

E-print Network

Electric power from offshore wind via synoptic-scale interconnection Willett Kemptona,1 , Felipe M) World wind power resources are abundant, but their utilization could be limited because wind fluctuates rather than providing steady power. We hypothesize that wind power output could be stabilized if wind

Firestone, Jeremy

489

Taming Hurricanes With Arrays of Offshore Wind Turbines  

E-print Network

Taming Hurricanes With Arrays of Offshore Wind Turbines Mark Z. Jacobson Cristina Archer, Willet #12;Representation of a vertically-resolved wind turbine in model Lines are model layers are Saturated With Turbines, for Two Parameterizations Turbine parameterization reduces winds at hub height

Firestone, Jeremy

490

OFFSHORE BOUNDARY-LAYER MODELLING H. Bergstrm1  

E-print Network

for this are excluded. Field experiments in the Baltic Sea area, [1], have shown that the atmospheric boundary layer farOFFSHORE BOUNDARY-LAYER MODELLING H. Bergström1 and R. Barthelmie2 1) Uppsala Univ., Dept. of Earth and low-level jets. The paper describes results from the boundary-layer modelling work package (WP4

491

Offshore wind resource estimation from satellite SAR wind field maps  

Microsoft Academic Search

A wind resource estimation study based on a series of 62 satellite wind field maps is presented. The maps were retrieved from imaging synthetic aperture radar (SAR) data. The wind field maps were used as input to the software RWT, which calculates the offshore wind resource based on spatial averaging (footprint modelling) of the wind statistic in each satellite image.

C. B. Hasager; M. Nielsen; P. Astrup; R. Barthelmie; E. Dellwik; N. O. Jensen; B. H. Jørgensen; S. C. Pryor; O. Rathmann; B. R. Furevik

2005-01-01

492

Coupled dynamic analysis of floating offshore wind farms  

E-print Network

dynamic analysis of an offshore floating wind turbine system including blade-rotor dynamics and platform motions. As a test case, the TLP-type floater system with 3 blades of 70-m diameter designed by the National Renewable Energy Laboratory (NREL...

Shim, Sangyun

2009-05-15

493

Treatment and recycling system optimisation with activity-based costing in WEEE reverse logistics management: an environmental supply chain perspective  

Microsoft Academic Search

Waste electrical and electronic equipment (WEEE) reverse logistics management has increasingly received much attention in recent years not only because of the fast increase of WEEE but also the legislations in many developed countries. This paper focuses on the treatment and recycling system, and proposes a two-stage multi-objective decision framework. In the treatment stage, the responsible producer selects treatment suppliers

W.-H. Tsai; Shih-Jieh Hung

2009-01-01

494

Assessment of Offshore Wind Energy Potential in the United States (Poster)  

SciTech Connect

The development of an offshore wind resource database is one of the first steps necessary to understand the magnitude of the resource and to plan the distribution and development of future offshore wind power facilities. The U.S. Department of Energy supported the production of offshore wind resource maps and potential estimates for much of the United States. This presentation discusses NREL's 2010 offshore wind resources report; current U.S., regional, and state offshore maps; methodology for the wind mapping and validation; wind potential estimates; the Geographic Information Systems database; and future work and conclusions.

Elliott, D.; Schwartz, M.; Haymes, S.; Heimiller, D.; Musial, W.

2011-05-01

495

FRC: A low-cost service robot for subsea flexible risers  

Microsoft Academic Search

This paper presents the design and development of a semi-autonomous low-cost underwater service robot for subsea flexible risers, used for supplying oil from the deep sea to the offshore platforms and floating production, storage and offloading vessels (FPSO). The robot is designed in a modular way allowing flexibility and variety in use. It can provide various types of services according

D. Psarros; V. Papadimitriou; P. Chatzakos; V. Spais; K. Hrissagis

2009-01-01

496

Offshore underbalanced drilling system could revive field developments. Part 2: Making this valuable reservoir drilling/completion technique work on a conventional offshore drilling platform  

SciTech Connect

Part 1, presented in the July issue, discussed the emerging trend to move underbalanced drilling (UBD) operations into the offshore arena, following its successful application in many onshore areas. This concluding article delves into the details of applying UBD offshore. Starting with advantages the technique offers in many maturing or complex/marginal prospects, the UBD system for offshore platforms use is described. This involves conversion of the conventional rotary system, use of rotating diverters, design of the surface fluid separation system and the necessary gas (nitrogen or natural gas) injection system to lighten the fluid column. Commonly faced operational challenges for offshore UBD are listed along with recommended solutions.

Nessa, D.O.; Tangedahl, M.J.; Saponja, J.

1997-10-01

497

Effects of sea state on offshore wind resourcing in Florida  

NASA Astrophysics Data System (ADS)

Offshore resource assessment relies on estimating wind speeds at turbine hub height using observations typically made at substantially lower height. The methods used to adjust from observed wind speeds to hub height can impact resource estimation. The importance of directional sea state is examined, both as seasonal averages and as a function of the diurnal cycle. A General Electric 3.6 MW offshore turbine is used as a model for a power production. Including sea state increases or decreases seasonally averaged power production by roughly 1%, which is found to be an economically significant change. These changes occur because the sea state modifies the wind shear (vector wind difference between the buoy height and the moving surface) and therefore the extrapolation from the observation to hub height is affected. These seemingly small differences in capacity can alter profits by millions of dollars depending upon the size of the farm and fluctuations in price per kWh throughout the year. A 2% change in capacity factor can lead to a 10 million dollar difference from total kWh produced from a wind farm of 100 3.6MW turbines. These economic impacts can be a deciding factor in determining whether a resource is viable for development. Modification of power output due to sea states are shown for seasonal and diurnal time scales. Three regions are examined herein: West Florida, East Florida, and Nantucket Sound. The average capacity after sea state is included suggests areas around Florida could provide substantial amounts of wind power throughout three-fourths of the calendar year. At certain times of day winter average produced capacity factors in West Florida can be up to 45% more than in summer when sea state is included. Nantucket Sound capacity factors are calculated for comparison to a region near a planned United States offshore wind farm. This study provides evidence to suggest including sea state in offshore wind resource assessment causes economically significant differences for offshore wind power siting.

Collier, Cristina

498

The 3 Coastal Margins of Alaska - Stepping Offshore Geophysically  

NASA Astrophysics Data System (ADS)

Alaska has three distinctly different coastal margins with contrasting geophysical signatures that reflect different modes of origin and evolution. The North Slope of Alaska tapers topographically from the Brooks Range to the eroding shore of the Beaufort Sea. The modest surface geomorphology contrasts with tremendous pre-Carboniferous basement relief from the 12 km Colville basin low over the North Alaska deep magnetic high, rising to subsea exposure on the Barrow arch, and diving more than 13 km offshore into the deep Canada basin. Combined seismic and gravity interpretation allows us to model the complexity of the northern Alaska continental basement. Segmentation in the edge-effect Free Air gravity high provides clues to the lateral variations in extensional processes along this northern margin. Western Alaska connects offshore into the Bering Sea, whose shallow waters conceal the westward continuation of Alaska geologic trends. These trends are reflected in distinctive magnetic anomaly patterns that continue far off-shore. The southern Gulf of Alaska margin is the most active Alaska margin. Several large-scale geophysical elements (e.g., the South Alaska Magnetic High and the Gulf of Alaska Magnetic High) track key tectonic components of the margin. Gravity and geoid anomalies highlight the dynamic setting of Cook Inlet at the sharp bend in the Pacific/North America margin. Many of the major geophysical anomalies at the Alaska margins are better mapped onshore than they are offshore, highlighting the critical need for additional offshore data collection. It is important to combine terrestrial and (improved) marine data to fully interpret the origin and evolution of these margins.

Saltus, R. W.; Haeussler, P. J.; Bird, K. J.; Hudson, T.

2011-12-01

499

On Assessing the Accuracy of Offshore Wind Turbine Reliability-Based Design Loads from the Environmental Contour Method  

E-print Network

-regulated wind turbine located at two different Danish offshore sites. Even though applicationOn Assessing the Accuracy of Offshore Wind Turbine Reliability-Based Design Loads from to derive design loads for an active stall-regulated offshore wind turbine. Two different Danish offshore

Manuel, Lance

500

Copyright 2002, Offshore Technology Conference This paper was prepared for presentation at the 2002 Offshore Technology Conference held in  

E-print Network

Caspian Sea, offshore Azerbaijan, prove evidence for buried gas hydrates well- beneath the seafloor (~300 Caspian Sea may be stable in water depths as shallow as ~150 m, much shallower than other areas reported of the deepwater of the South Caspian Sea, buried deposits well beneath the seafloor, and accordingly, they may

Knapp, Camelia Cristina