These are representative sample records from Science.gov related to your search topic.
For comprehensive and current results, perform a real-time search at Science.gov.
1

Cost of Offshore Wind Energy Charlene Nalubega  

E-print Network

Cost of Offshore Wind Energy and Industrial Engineering The focus of my research is to estimate the cost of floating offshore wind turbines water as well as on land based wind farms. The specific offshore wind energy case under consideration

Mountziaris, T. J.

2

Handling Uncertainty in Activity Based Costing Systems  

Microsoft Academic Search

Development of an activity based costing (ABC) system requires extensive data collection and analysis. ABC data are often estimated due to cost and time constraints, which leads to inherent imprecision and uncertainty. The focus of this paper is to discuss two methods for handling uncertain data in ABC systems. Handling the uncertainty and imprecision inherent in ABC systems can provide

Heather Nachtmann; Kim LaScola Needy

3

FUZZY ACTIVITY BASED COSTING: A METHODOLOGY FOR HANDLING UNCERTAINTY IN ACTIVITY BASED COSTING SYSTEMS  

Microsoft Academic Search

Activity based costing (ABC) systems are often developed using estimated input data. A methodology based on fuzzy set theory has been developed to handle estimation imprecision and uncertainty in ABC systems. This methodology creates a new type of ABC system; a fuzzy activity based costing (FABC) system. This paper introduces the concepts behind FABC, discusses the FABC system development process,

HEATHER NACHTMANN; KIM LASCOLA NEEDY

2001-01-01

4

Introduction to Activity Based Costing (ABC)  

NSDL National Science Digital Library

Narcyz Roztocki, staff member at the University of Pittsburgh, presents this Introduction to Activity Based Costing (ABC) in slide presentation format. Topics include "a typical situation in a small manufacturing firm," "major factors for determination of market price," and "traditional cost accounting (TCA)" among others. Participants may respond to the presentation via a questionnaire and a webliography of other ABC and Equal Value Added (EVA) sites is annotated for further research.

Roztocki, Narcyz

2007-05-27

5

Activity-Based Costing: A Cost Management Tool.  

ERIC Educational Resources Information Center

In college and university administration, overhead costs are often charged to programs indiscriminately, whereas the support activities that underlie those costs remain unanalyzed. It is time for institutions to decrease ineffective use of resources. Activity-based management attributes costs more accurately and can improve efficiency. (MSE)

Turk, Frederick J.

1993-01-01

6

Activity-Based Costing Systems for Higher Education.  

ERIC Educational Resources Information Center

Examines traditional costing models utilized in higher education and pinpoints shortcomings related to proper identification of costs. Describes activity-based costing systems as a superior alternative for cost identification, measurement, and allocation. (MLF)

Day, Dennis H.

1993-01-01

7

The case for implementing activity based costing.  

PubMed

ABC identifies profitable volumes to give managers information to better manage volumes. Managers must balance the demand for service while maintaining a reasonable profit margin. Disparate systems work extremely well for their intended purposes, but they do not communicate with one another. The strength of the data they hold individually may be leveraged when implementing ABC methodology. Mayo Clinic in Rochester, Minnesota implemented a pilot of ABC to evaluate CT services where there is a high volume, multiple service location for cost comparison, variety of patient acuity and service mix, and large capital investments.The goal was to reveal the actual cost of CT services at the procedural level. PMID:23270120

Monge, Paul H; Bolinger-Perez, Nicole; Boysen, Kent

2012-01-01

8

An activity-based methodology for operations cost analysis  

NASA Technical Reports Server (NTRS)

This report describes an activity-based cost estimation method, proposed for the Space Exploration Initiative (SEI), as an alternative to NASA's traditional mass-based cost estimation method. A case study demonstrates how the activity-based cost estimation technique can be used to identify the operations that have a significant impact on costs over the life cycle of the SEI. The case study yielded an operations cost of $101 billion for the 20-year span of the lunar surface operations for the Option 5a program architecture. In addition, the results indicated that the support and training costs for the missions were the greatest contributors to the annual cost estimates. A cost-sensitivity analysis of the cultural and architectural drivers determined that the length of training and the amount of support associated with the ground support personnel for mission activities are the most significant cost contributors.

Korsmeyer, David; Bilby, Curt; Frizzell, R. A.

1991-01-01

9

METHODS FOR HANDLING UNCERTAINTY IN ACTIVITY BASED COSTING SYSTEMS  

Microsoft Academic Search

Activity based costing (ABC) systems are implemented with the purpose of obtaining accurate product and process cost information. Due to extensive data requirements, ABC input data are often estimated which leads to inherent imprecision and uncertainty in these systems. The objective of this research is to develop and compare methods for handling this inherent data imprecision and uncertainty within ABC

HEATHER NACHTMANN; KIM LASCOLA NEEDY

2003-01-01

10

Vendor selection and evaluation an Activity Based Costing approach  

Microsoft Academic Search

In this paper we propose an Activity Based Costing approach for vendor selection and evaluation. This system allows us to compute total costs caused by a supplier in a firm's production process, thereby increasing the objectivity in the selection process. We further show that for vendor evaluation purposes the difference between the budgeted and actual total vendor score can be

Filip Roodhooft; Jozef Konings

1997-01-01

11

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

12

The ABCs of Activity-Based Costing: A Cost Containment and Reallocation Tool.  

ERIC Educational Resources Information Center

This article describes activity-based costing (ABC) and how this tool may help management understand the costs of major activities and identify possible alternatives. Also discussed are the traditional costing systems used by higher education and ways of applying ABC to higher education. (GLR)

Turk, Frederick J.

1992-01-01

13

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

14

A new costing model in hospital management: time-driven activity-based costing system.  

PubMed

Traditional cost systems cause cost distortions because they cannot meet the requirements of today's businesses. Therefore, a new and more effective cost system is needed. Consequently, time-driven activity-based costing system has emerged. The unit cost of supplying capacity and the time needed to perform an activity are the only 2 factors considered by the system. Furthermore, this system determines unused capacity by considering practical capacity. The purpose of this article is to emphasize the efficiency of the time-driven activity-based costing system and to display how it can be applied in a health care institution. A case study was conducted in a private hospital in Cyprus. Interviews and direct observations were used to collect the data. The case study revealed that the cost of unused capacity is allocated to both open and laparoscopic (closed) surgeries. Thus, by using the time-driven activity-based costing system, managers should eliminate the cost of unused capacity so as to obtain better results. Based on the results of the study, hospital management is better able to understand the costs of different surgeries. In addition, managers can easily notice the cost of unused capacity and decide how many employees to be dismissed or directed to other productive areas. PMID:23364414

Öker, Figen; Özyap?c?, Hasan

2013-01-01

15

[Cost management: the implementation of the activity-based costing method in sterile processing department].  

PubMed

This exploratory case study was performed aiming at implementing the Activity-based Costing (ABC) method in a sterile processing department (SPD) of a major teaching hospital. Data collection was performed throughout 2006. Documentary research techniques and non participant closed observation were used. The ABC implementation allowed for learning the activity-based costing of both the chemical and physical disinfection cycle/load: (dollar 9.95) and (dollar 12.63), respectively; as well as the cost for sterilization by steam under pressure (autoclave) (dollar 31.37) and low temperature steam and gaseous formaldehyde sterilization (LTSF) (dollar 255.28). The information provided by the ABC method has optimized the overall understanding of the cost driver process and provided the foundation for assessing performance and improvement in the SPD processes. PMID:20964053

Jericó, Marli de Carvalho; Castilho, Valéria

2010-09-01

16

The Cost of Library Services: Activity-Based Costing in an Australian Academic Library.  

ERIC Educational Resources Information Center

Explains activity-based costing (ABC), discusses the benefits of ABC to library managers, and describes the steps involved in implementing ABC in an Australian academic library. Discusses the budgeting process in universities, and considers benefits to the library. (Author/LRW)

Robinson, Peter; Ellis-Newman, Jennifer

1998-01-01

17

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

18

Filmless versus film-based systems in radiographic examination costs: an activity-based costing method  

PubMed Central

Background Since the shift from a radiographic film-based system to that of a filmless system, the change in radiographic examination costs and costs structure have been undetermined. The activity-based costing (ABC) method measures the cost and performance of activities, resources, and cost objects. The purpose of this study is to identify the cost structure of a radiographic examination comparing a filmless system to that of a film-based system using the ABC method. Methods We calculated the costs of radiographic examinations for both a filmless and a film-based system, and assessed the costs or cost components by simulating radiographic examinations in a health clinic. The cost objects of the radiographic examinations included lumbar (six views), knee (three views), wrist (two views), and other. Indirect costs were allocated to cost objects using the ABC method. Results The costs of a radiographic examination using a filmless system are as follows: lumbar 2,085 yen; knee 1,599 yen; wrist 1,165 yen; and other 1,641 yen. The costs for a film-based system are: lumbar 3,407 yen; knee 2,257 yen; wrist 1,602 yen; and other 2,521 yen. The primary activities were "calling patient," "explanation of scan," "take photographs," and "aftercare" for both filmless and film-based systems. The cost of these activities cost represented 36.0% of the total cost for a filmless system and 23.6% of a film-based system. Conclusions The costs of radiographic examinations using a filmless system and a film-based system were calculated using the ABC method. Our results provide clear evidence that the filmless system is more effective than the film-based system in providing greater value services directly to patients. PMID:21961846

2011-01-01

19

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

20

IVF cycle cost estimation using Activity Based Costing and Monte Carlo simulation.  

PubMed

The Authors present a new methodological approach in stochastic regime to determine the actual costs of an healthcare process. The paper specifically shows the application of the methodology for the determination of the cost of an Assisted reproductive technology (ART) treatment in Italy. The reason of this research comes from the fact that deterministic regime is inadequate to implement an accurate estimate of the cost of this particular treatment. In fact the durations of the different activities involved are unfixed and described by means of frequency distributions. Hence the need to determine in addition to the mean value of the cost, the interval within which it is intended to vary with a known confidence level. Consequently the cost obtained for each type of cycle investigated (in vitro fertilization and embryo transfer with or without intracytoplasmic sperm injection), shows tolerance intervals around the mean value sufficiently restricted as to make the data obtained statistically robust and therefore usable also as reference for any benchmark with other Countries. It should be noted that under a methodological point of view the approach was rigorous. In fact it was used both the technique of Activity Based Costing for determining the cost of individual activities of the process both the Monte Carlo simulation, with control of experimental error, for the construction of the tolerance intervals on the final result. PMID:24752546

Cassettari, Lucia; Mosca, Marco; Mosca, Roberto; Rolando, Fabio; Costa, Mauro; Pisaturo, Valerio

2014-04-22

21

Activity-based cost management for design and development stage  

Microsoft Academic Search

The fierce global competition in the international markets forces manufacturers to compete in quality, cost, and the time to market aspects of their products. Knowing the cost of the manufactured components is essential for efficient operation and competitive production.The current evolution of competitive manufacturing requires a shorter market life span of products—emphasizing the design and development phase of the product

David Ben-Arieh; Li Qian

2003-01-01

22

Activity-Based Costing Model for Assessing Economic Performance.  

ERIC Educational Resources Information Center

An economic model for evaluating the cost performance of academic and administrative programs in higher education is described. Examples from its application at Indiana University-Purdue University Indianapolis are used to illustrate how the model has been used to control costs and reengineer processes. (Author/MSE)

DeHayes, Daniel W.; Lovrinic, Joseph G.

1994-01-01

23

The Role of Activity Based Costing (ABC) in Educational Support Services: A White Paper.  

ERIC Educational Resources Information Center

Many front-line managers who are assuming more financial responsibility for their organizations find traditional cost accounting inadequate for their needs and are turning to Activity Based Costing (ABC). ABC is not a financial reporting system to serve the needs of regulatory agencies, but a tool that tracks costs from the general ledger…

Edds, Daniel B.

24

The integrated activity-based costing and economic value-added system for the service sector  

Microsoft Academic Search

Abstract This paper examines,the implementation,of the Integrated Activity-Based Costing and Economic Value Added System in the service sector. This system is intended for use by those service companies,for which,the traditional costing system,is not adequate. Motivations for tracing overhead cost as well as capital cost, using the integrated system, are discussed. Resulting improvements,in the reliability of product cost information are illustrated

Narcyz Roztocki

2003-01-01

25

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

26

Activity-Based Costing in User Services of an Academic Library.  

ERIC Educational Resources Information Center

The rationale for using Activity-Based Costing (ABC) in a library is to allocate indirect costs to products and services based on the factors that most influence them. This paper discusses the benefits of ABC to library managers and explains the steps involved in implementing ABC in the user services area of an Australian academic library.…

Ellis-Newman, Jennifer

2003-01-01

27

THE INTEGRATED ACTIVITY-BASED COSTING AND ECONOMIC VALUE ADDED INFORMATION SYSTEM  

Microsoft Academic Search

This paper examines the implementation of an integrated Activity-Based Costing and Economic Value Added system, using a database approach. The proposed database approach allows the creation of a costing and performance measure system which provides decision-makers with up-to-date, complete, and reliable cost information. The steps for designing and implementing this integrated information system are illustrated with data from a real

Narcyz Roztocki

28

INTEGRATING ACTIVITY-BASED COSTING AND ECONOMIC VALUE ADDED IN MANUFACTURING  

Microsoft Academic Search

This article presents a cost and performance measurement system that integrates activity-based costing (ABC) with the economic value added financial performance measure. This proposed ABC-and-EVA system is a management support tool for managing cost and capital. The integrated ABC-and-EVA system includes the rate of resource consumption (as in a traditional ABC system), but it also includes capital demand. A traditional

Narcyz Roztocki; Kim LaScola Needy

29

The Integrated Activity-Based Costing and Economic Value Added System as a Strategic Management Tool: A Field Study  

Microsoft Academic Search

This paper describes a field study which examines the implementation of an integrated Activity- Based Costing and Economic Value Added System in two small manufacturing firms. The results of this study suggest that this integrated approach outperforms both traditional cost accounting and standard Activity-Based Costing methods. Furthermore, the findings from two small companies show that the reliability of cost information

Narcyz Roztocki

2000-01-01

30

Activity Based Costing as a method for assessing the economics of modularization a case study and beyond  

E-print Network

........................................................... 4 2.1 Cost effects of modularization........................................................................................... 5 2.1.4 Resuming cost effects The paper accounts for an Activity Based Costing (ABC) analysis performed in a case company ­ Martin Group A

Hansen, René Rydhof

31

Using the Integrated Activity-Based Costing and Economic Value Added Information System for Project Management  

Microsoft Academic Search

This paper examines the use of the Integrated ABC-and-EVA Information System for the management of new technology projects. The advantages of integrating the Activity-Based Costing system with the Economic Value Added financial performance measure and the positive impacts of this integration on project costing are presented. The effect of the Integrated Information System on overall project performance is discussed. Finally,

Narcyz Roztocki

2001-01-01

32

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

33

A survey of activity-based costing in the U.K.'s largest companies  

Microsoft Academic Search

This paper contains the results of a 1994 survey of activity-based costing (ABC) in the U.K.'s largest 1000 companies. The survey was designed to ascertain the adoption rate of ABC in these companies, the specific application of ABC, the views of users on the success and importance of ABC, the views of non-ABC users on ABC and the possibilities for

John Innes; Falconer Mitchell

1995-01-01

34

Operations Assessment of Launch Vehicle Architectures using Activity Based Cost Models  

NASA Technical Reports Server (NTRS)

The growing emphasis on affordability for space transportation systems requires the assessment of new space vehicles for all life cycle activities, from design and development, through manufacturing and operations. This paper addresses the operational assessment of launch vehicles, focusing on modeling the ground support requirements of a vehicle architecture, and estimating the resulting costs and flight rate. This paper proposes the use of Activity Based Costing (ABC) modeling for this assessment. The model uses expert knowledge to determine the activities, the activity times and the activity costs based on vehicle design characteristics. The approach provides several advantages to current approaches to vehicle architecture assessment including easier validation and allowing vehicle designers to understand the cost and cycle time drivers.

Ruiz-Torres, Alex J.; McCleskey, Carey

2000-01-01

35

The use of activity-based cost estimation as a management tool for cultural change  

NASA Technical Reports Server (NTRS)

It will be shown that the greatest barrier to American exploration of the planet Mars is not the development of the technology needed to deliver humans and return them safely to earth. Neither is it the cost of such an undertaking, as has been previously suggested, although certainly, such a venture may not be inexpensive by some measures. The predicted costs of exploration have discouraged serious political dialog on the subject. And, in fact, even optimistic projections of the NASA budget do not contain the resources required, under the existing development and management paradigm, for human space exploration programs. It will be demonstrated that the perception of the costs of such a venture, and the cultural responses to the perceptions are factors inhibiting American exploration of the moon and the planet Mars. Cost models employed in the aerospace industry today correctly mirror the history of past space programs, and as such, are representative of the existing management and development paradigms. However, if, under this current paradigm no major exploration programs are feasible, then cost analysis methods based in the past may not have great utility in exploring the needed cultural changes. This paper explores the use of a new type of model, the activity based cost model, which will treat management style as an input variable, in a sense providing a tool whereby a complete, affordable program might be designed, including both the technological and management aspects.

Mandell, Humboldt; Bilby, Curt

1991-01-01

36

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

37

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

38

AN INTEGRATED ACTIVITY-BASED COSTING AND ECONOMIC VALUE ADDED SYSTEM AS AN ENGINEERING MANAGEMENT TOOL FOR MANUFACTURERS  

Microsoft Academic Search

This paper presents a cost and performance measurement system that integrates the Activity-Based Costing (ABC) method with the Economic Value Added value-based financial performance measure. This proposed ABC-and- EVA system is an engineering management tool that helps to successfully manage cost and capital. It allows enterprise leaders to create shareholder value through cost structure improvement. In the ABC-and-EVA system, the

Narcyz Roztocki; Kim LaScola Needy

39

Low-cost farm equipment aids cuttings disposal offshore  

SciTech Connect

Tommeliten field is situated in the Ekofisk area offshore Norway in 243 ft of water. The field was drilled and completed subsea. Six wells were drilled through the template and connected to the Edda platform, where gas and condensate are processed. The first five wells were drilled without collecting the cuttings. The 26-in. holes drilled were down to about 3,300 ft without a riser and all the soft, wet clay and loose sand were pumped out on the seabed. The 26-in. sections were drilled with seawater and viscous gel sweeps. Cuttings volume in the 26-in. section was around 9,535 cu ft, or half of the total well cuttings volume. Since returns from the 20-in. casing cement jobs were pumped on top of the cuttings from earlier drilling, it was thought the cuttings piles might cause problems. On top of these cuttings/cement piles, the remainder of the cuttings from the five wells were dropped from the rig. Average TD of the wells was around 11,319 ft. Sized at 137.8 ft by 82 ft, the template was more or less completely covered with cuttings after only a few wells were drilled. This paper discusses how a special operation was initiated to eliminate the continued buildup of the subsea cuttings pile.

Sirevag, G. (Statoil, Stavanger (NO))

1990-10-01

40

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

41

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

42

Research on Supervising Performance Assessment Method of Public Projects under the Ideas of Activity-Based Cost  

Microsoft Academic Search

Structuring a corresponding performance assessment index system by dividing the responsibility main body,and selecting a performance assessment index according to the principal component analysis. Then basing on a comprehensive performance assessment which is obtained by fuzzy comprehensive evaluation method, to structure a performance assessment model of supervising public projects that is perfect and based on the ideas of activity-based cost,

Yang Hong-xiong; Liu Yi-liu; Sun Chun-ling

2010-01-01

43

Status of costing hospital nursing work within Australian casemix activity-based funding policy.  

PubMed

Australia has a long history of patient level costing initiated when casemix funding was implemented in several states in the early 1990s. Australia includes, to some extent, hospital payment based on nursing intensity adopted within casemix funding policy and the Diagnostic Related Group system. Costing of hospital nursing services in Australia has not changed significantly in the last few decades despite widespread introduction of casemix funding policy at the state level. Recent Commonwealth of Australia National Health Reform presents change to the management of the delivery of health care including health-care costing. There is agreement for all Australian jurisdictions to progress to casemix-based activity funding. Within this context, nurse costing infrastructure presents contemporary issues and challenges. An assessment is made of the progress of costing nursing services within casemix funding models in Australian hospitals. Valid and reliable Australian-refined nursing service weights might overcome present cost deficiencies and limitations. PMID:22257324

Heslop, Liza

2012-02-01

44

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.

45

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

E-print Network

to develop the scope of time-cost optimization in this research. Optimization tools, such as neural networks, genetic algorithms, and simulation methods were analyzed to determine an effective tool for the optimization based on the planning and execution...

Son, Junghye

1999-01-01

46

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

47

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

48

Ecological and economic cost-benefit analysis of offshore wind energy  

Microsoft Academic Search

Wind energy has experienced dramatic growth over the past decade. A small fraction of this growth has occurred offshore, but as the best wind resources become developed onshore, there is increasing interest in the development of offshore winds. Like any form of power production, offshore wind energy has both positive and negative impacts. The potential negative impacts have stimulated a

Brian Snyder; Mark J. Kaiser

2009-01-01

49

A fuzzy goal programming approach for green supply chain optimisation under activity-based costing and performance evaluation with a value-chain structure  

Microsoft Academic Search

Supply chain operation with sustainable consideration has become an increasingly important issue in recent years. However, the decision framework with integrated costing and performance evaluation for green supply chain (GSC) has not been well developed so far in the literature. For this reason, this paper is aimed to propose a fuzzy goal programming (FGP) approach that integrates activity-based costing (ABC)

W.-H. Tsai; Shih-Jieh Hung

2009-01-01

50

This is a preprint of the following article, which is available from http://mdolab.engin.umich.edu/content/ multidisciplinary-design-optimization-offshore-wind-turbines-minimum-levelized-cost-energy. The published  

E-print Network

://mdolab.engin.umich.edu/content/ multidisciplinary-design-optimization-offshore-wind-turbines-minimum-levelized-cost-energy. The published article.A.M. van Kuik. Multidisciplinary Design Optimization of Offshore Wind Turbines for Minimum Levelized Cost of Energy. Renewable Energy (In press), 2014 Multidisciplinary Design Optimization of Offshore Wind Turbines

Papalambros, Panos

51

ABC's of Higher Education. Getting Back to the Basics: An Activity-Based Costing Approach to Planning and Financial Decision Making. AIR 1999 Annual Forum Paper.  

ERIC Educational Resources Information Center

This paper describes the activity-based costing approach used to report and capture the time spent by faculty for specified activities at one Midwestern university. For each department, four major areas (instruction, research, public service, and administration) and 14 activities were identified. During the annual goal-setting period, each faculty…

Cox, Kelline S.; Downey, Ronald G.; Smith, Laurinda G.

52

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

53

CONGRESSIONAL BRIEFING Offshore Wind  

E-print Network

CONGRESSIONAL BRIEFING Offshore Wind Lessons Learned from Europe: Reducing Costs and Creating Jobs Thursday, June 12, 2014 Capitol Visitors Center, Room SVC 215 Enough offshore wind capacity to power six the past decade. What has Europe learned that is applicable to a U.S. effort to deploy offshore wind off

Firestone, Jeremy

54

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

55

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

56

Offshore Wind Energy Systems  

ERIC Educational Resources Information Center

Explores the possibility of installing offshore windmills to provide electricity and to save fuel for the United Kingdom. Favors their deployment in clusters to facilitate supervision and minimize cost. Discusses the power output and the cost involved and urges their quick development. (GA)

Musgrove, P.

1978-01-01

57

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.

58

ORIGINAL PAPER Review of Methodologies for Offshore Wind Resource  

E-print Network

ORIGINAL PAPER Review of Methodologies for Offshore Wind Resource Assessment in European Seas A. M installation, operation and maintenance costs associated with offshore wind parks. Successful offshore wind. Keywords Wind energy Á Offshore Á Resources assessment Á European seas Á Wind mapping Á Wind climatology Á

Pryor, Sara C.

59

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

60

Activity-based therapies  

Microsoft Academic Search

Summary  Therapeutic activity is a mainstay of clinical neurorehabilitation, but is typically unstructured and directed at compensation\\u000a rather than restoration of central nervous system function. Newer activity-based therapies (ABTs) are in early stages of development\\u000a and testing. The ABTs attempt to restore function via standardized therapeutic activity based on principles of experimental\\u000a psychology, exercise physiology, and neuroscience. Three of the best

Alexander W. Dromerick; Peter S. Lum; Joseph Hidler

2006-01-01

61

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

62

Activity-Based Physics  

NSDL National Science Digital Library

Activity-Based Physics aims to sustain and enhance efforts to render introductory physics courses more effective and exciting at both the secondary and college level. It uses the outcomes of physics education research along with flexible computer tools to promote activity-based models of physics instruction. This program includes the refinement of existing written materials, apparatus, instructional techniques, and computer software and hardware; the creation of new instructional materials and approaches; and dissemination. This work will be informed by a comprehensive program of classroom testing and educational research.

Hammer, David; Redish, Joe; Van Zee, Emily

2009-05-04

63

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 The availability of offshore wind resources in coastal regions makes offshore wind energy an attractive opportunity. There are, however, significant challenges in realizing offshore wind energy with an acceptable cost

64

Dresser-Rand Offshore Baseplate Project Project Summary  

E-print Network

the cost. The project focused on reevaluating the baseplate design using modern analysis toolsDresser-Rand Offshore Baseplate Project Project Summary Baseplates are utilized in offshore, with recent rises in material and manufacturing costs, there is a desire to minimize the excess and reduce

Demirel, Melik C.

65

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

66

Offshore Wind Geoff Sharples  

E-print Network

Offshore Wind Geoff Sharples geoff@clearpathenergyllc.com #12;Frequently Unanswered Ques?ons · Why don't "they" build more offshore wind? · Why not make States Cape Wind PPA at 18 c/kWh #12;The cycle of non-innova?on Offshore

Kammen, Daniel M.

67

A Predictive Maintenance Policy Based on the Blade of Offshore Wind Wenjin Zhu, Troyes University of Technology  

E-print Network

A Predictive Maintenance Policy Based on the Blade of Offshore Wind Turbine Wenjin Zhu, Troyes onshore to offshore locations [1]. As offshore wind turbines are located at remote sites withlimited]. Operation and maintenance (O&M) costs of off-shore wind turbines contribute about 25-30% to the total energy

McCalley, James D.

68

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

69

www.cesos.ntnu.no Author Centre for Ships and Ocean Structures Offshore Wind Turbine Operation  

E-print Network

1 www.cesos.ntnu.no Author ­ Centre for Ships and Ocean Structures Offshore Wind Turbine Operation Structures Deep Water Offshore Wind Economic Production Cost WT Life Time : 20 Years Introduction Vast icing for offshore Wind Turbines ? · Wherever there is sea icing ! · Temperature bellow zero degree

Nørvåg, Kjetil

70

Influence of Nonlinear Irregular Waves on the Fatigue Loads of an Offshore Wind Turbine  

E-print Network

Influence of Nonlinear Irregular Waves on the Fatigue Loads of an Offshore Wind Turbine Michiel B-mail: michiel van.der.meulen@siemens.com Abstract. In order to make offshore wind power a cost effective load calculations by using a more advanced model for wave kinematics. As offshore wind turbines

Papalambros, Panos

71

Loading and Response of Offshore Wind Turbine Support Structures: Prediction with Comparison to Measured Data  

E-print Network

Loading and Response of Offshore Wind Turbine Support Structures: Prediction with Comparison, offshore wind support platforms differ from oil platforms is several important ways: First, wind platforms turbines, combined with the relatively slender profit margins in the offshore wind business, makes cost

Sweetman, Bert

72

Synthetic Aperture Radar for Offshore Wind Resource Assessment and Wind Farm Development in the UK  

Microsoft Academic Search

The UK has an abundant offshore wind resource with offshore wind set to grow rapidly over the coming years. Optimisation of energy production is of the utmost importance given the high installation and maintenance costs of offshore turbines; accurate estimates of wind speed characteristics are critical during the planning process. While operational assessment methods which rely upon in-situ observations or

Iain Cameron; Parivash Lumsdon; Nick Walker; Iain Woodhouse

2006-01-01

73

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

74

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

75

Rubber in offshore engineering  

Microsoft Academic Search

The offshore oil and gas industries have been turning increasingly to natural and synthetic rubbers for a very wide variety of uses, since they are flexible and highly corrosion-resistant in hostile marine environments, and exhibit predictable and reproducible behaviour under a wide range of physical conditions. This book considers the growing popularity of rubber as an offshore material, providing a

Stevenson

1984-01-01

76

Offshore Renewable Energy Solutions  

E-print Network

and maximising energy extraction. Offshore understanding Our long track record working with the oil and gasOffshore Renewable Energy Solutions #12;Cefas: meeting complex requirements The Centre and fisheries data. We also work collaboratively, with cross-cutting project teams, innovators in the supply

77

Unraveling Higher Education's Costs.  

ERIC Educational Resources Information Center

The activity-based costing (ABC) method of analyzing institutional costs in higher education involves four procedures: determining the various discrete activities of the organization; calculating the cost of each; determining the cost drivers; tracing cost to the cost objective or consumer of each activity. Few American institutions have used the…

Gordon, Gus; Charles, Maria

1998-01-01

78

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

79

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

80

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

81

Electrical Collection and Transmission Systems for Offshore Wind Power: Preprint  

SciTech Connect

The electrical systems needed for offshore wind farms to collect power from wind turbines--and transmit it to shore--will be a significant cost element of these systems. This paper describes the development of a simplified model of the cost and performance of such systems.

Green, J.; Bowen, A.; Fingersh, L.J.; Wan, Y.

2007-03-01

82

California offshore wind energy potential  

Microsoft Academic Search

This study combines multi-year mesoscale modeling results, validated using offshore buoys with high-resolution bathymetry to create a wind energy resource assessment for offshore California (CA). The siting of an offshore wind farm is limited by water depth, with shallow water being generally preferable economically. Acceptable depths for offshore wind farms are divided into three categories: ?20m depth for monopile turbine

Michael J. Dvorak; Cristina L. Archer; Mark Z. Jacobson

2010-01-01

83

Image processing in offshore engineering  

SciTech Connect

The technological progress which has taken place during the last decade introduced a totally new outlook regarding the professional computational environment in general, and regarding the engineering profession in particular. During many years engineering computing was performed based on large computer centers, getting bigger and bigger all the time, going from mainframes to super computers, essentially producing numerical results on paper media. Lately, however, it has been realized that a much more productive computational environment can be implemented using an open architecture of client/server type, based on smaller lower cost equipment including workstations and PC`s, and considering engineering information in a broader sense. This papers reports briefly the experience of the Production Department of Petrobras in transforming its centralized, mainframe based, computational environment into a open distributed client/server computational environment, focusing on the problem of handling technical graphics information regarding its more than 70 fixed offshore platforms.

Rodriguez, M.V.R.; A. Oliveira, M. de; Almeida, M.E.T. de; Lorenzoni, C. [Petrobras-DEPRO, Rio de Janeiro (Brazil); Ferrante, A.J. [ISC Italia, Milano (Italy)

1995-12-31

84

What Does it Really Cost? Allocating Indirect Costs.  

ERIC Educational Resources Information Center

Better managerial control in terms of decision making and understanding the costs of a system/service result from allocating indirect costs. Allocation requires a three-step process: selecting cost objectives, pooling related overhead costs, and selecting costs bases to connect the objectives to the pooled costs. Argues that activity-based costing…

Snyder, Herbert; Davenport, Elisabeth

1997-01-01

85

Kentish Flats Offshore Wind Farm  

E-print Network

Kentish Flats Offshore Wind Farm #12;By August 2005 the offshore wind farm at Kentish Flats and offshore wind energy will contribute sig- nificantly to achieving this target. The Kentish Flats alone plateau just outside the main Thames shipping lanes. The Kentish Flats wind farm will comprise 30

Firestone, Jeremy

86

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

87

Titanium offers offshore advantages  

SciTech Connect

Titanium is slowly becoming the answer to many of the corrosion problems associated with offshore drilling and sour hydrocarbons. The possible implications of titanium's resistance to hypochlorite solutions is still under study. Various tests have been run on this and its alloys. A growing number of applications will also take advantage of the strength to weight ratio of titanium.

Gilbert, R.

1984-04-01

88

Evaluating offshore and domestic production in the apparel industry: The small firm’s perspective  

Microsoft Academic Search

This paper extends the existing literature on the potential advantages and drawbacks of domestic and offshore manufacturing\\u000a strategies to a small firm perspective. The advantages of offshore production to the large corporation have received much\\u000a attention in recent years, particularly with regards to the apparel industry. The key advantages of offshore production are\\u000a obvious for the large firm: cost reductions

Leo Paul Dana; Robert T. Hamilton; Brooke Pauwels

2007-01-01

89

Proposing a Formalised Model for Mindful Information Systems Offshoring  

NASA Astrophysics Data System (ADS)

The central thesis of this chapter is that mathematical economics can provide a novel approach to the examination of offshoring business decisions and provide an impetus for future research in the area. A growing body of research indicates that projected cost savings from IT offshoring projects are not being met. Furthermore, evidence suggests that decision-making processes have been more emotional than rational, and that many offshoring arrangements have been rushed into without adequate analysis of the true costs involved. Building on the concept of mindfulness and mindlessness introduced to the IS literature by Swanson and Ramiller, a cost equation is developed using “deductive reasoning rather than inductive study” in the tradition of mathematical economics. The model endeavours to capture a wide range of both the quantitative and qualitative parameters. Although the economic model is illustrated against the background of a European scenario, the theoretical framework is generic and applicable to organisations in any global location.

Costello, Gabriel J.; Coughlan, Chris; Donnellan, Brian; Gadatsch, Andreas

90

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

91

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

92

Activity-Based Management System Implementation in Higher Education Institution: Benefits and Challenges  

ERIC Educational Resources Information Center

Purpose: The purpose of this paper is to discuss how activity-based costing (ABC) technique can be applied in the context of higher education institutions. It also discusses the obstacles and challenges to the successful implementation of activity-based management (ABM) in the higher education environment. Design/methodology/approach: This paper…

Ismail, Noor Azizi

2010-01-01

93

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

94

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

95

Activity-based costing in services: literature bibliometric review.  

PubMed

This article is aimed at structuring a bibliography portfolio to treat the application of the ABC method in service and contribute to discussions within the scientific community. The methodology followed a three-stage procedure: Planning, execution and Synthesis. Also, the process ProKnow-C (Knowledge Process Development - Constructivist) was used in the execution stage. International databases were used to collect information (ISI Web of Knowledge and Scopus). As a result, we obtained a bibliography portfolio of 21 articles (with scientific recognition) dealing with the proposed theme. PMID:23518506

Stefano, Nara Medianeira; Filho, Nelson Casarotto

2013-12-01

96

Arctic offshore platform  

SciTech Connect

An offshore structure is disclosed for use in drilling and producing wells in arctic regions having a conical shaped lower portion that extends above the surface of the water and a cylindrical upper section. The conical portion is provided with a controlled stiffness outer surface for withstanding the loads produced by ice striking the structure. The stiffness properties of the outer shell and flexible members are designed to distribute the load and avoid high local loads on the inner parts of the structure.

Bhula, D.N.

1984-01-24

97

Offshore wind energy potential in China: Under technical, spatial and economic constraints  

Microsoft Academic Search

This paper investigates available offshore wind energy resources in China’s exclusive economic zone (EEZ) with the aid of a Geographical Information System (GIS), which allows the influence of technical, spatial and economic constraints on offshore wind resources being reflected in a continuous space. Geospatial supply curves and spatial distribution of levelised production cost (LPC) are developed, which provide information on

Lixuan Hong; Bernd Möller

2011-01-01

98

Offshoring Technology Innovation: A Case Study of Rare-earth Technology  

E-print Network

markets, little is known about the longer term effect of offshoring on the rate of innovation of home-skilled labor- intensive manufacturing positions to other countries, especially in the developing world (Mills and information technology, comprise offshoring of service positions, mostly to countries with large labor cost

Veloso, Francisco

99

The Future of Offshore Wind Energy  

E-print Network

1 The Future of Offshore Wind Energy #12;2 #12;3 Offshore Wind Works · Offshore wind parks: 28 in 10 countries · Operational since 1991 · Current installed capacity: 1,250 MW · Offshore wind parks in the waters around Europe #12;4 US Offshore Wind Projects Proposed Atlantic Ocean Gulf of Mexico Cape Wind

Firestone, Jeremy

100

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

101

Offshore outlook: the American Arctic  

SciTech Connect

Offshore areas in the American Arctic are highlighted and the development of the area is compared with other offshore areas where the required technology is more readily available. Principal areas are shown in which new concepts are being put to practice. Canada's east coast is examined. Several technological trends are reviewed to help operators accelerate the discovery and development of arctic petroleum reserves.

Jahns, M.O.

1985-05-01

102

Offshore oil prospects improve  

NASA Astrophysics Data System (ADS)

The issues, prospects, and environmental concerns about drilling for offshore oil and gas are being seen in a different light than at any other time during the past decade. Exploration drilling on offshore locations is proceeding at a high rate, and environmental concerns, while recognized as real, appear to be a lot less worrisome than might have been predicted a decade ago. Part of the reason for the changes in levels of concern results from the close monitoring programs that have been in effect for the past few years. Paul R. Ryan of the Woods Hole Oceanographic Institution recently described exploration activities on Georges Bank: “We now have the results of the first year of monitoring, and, although eight wells are considered a minimal observational test, there were no biological changes in the benthic community that could be attributed to drilling activity.” (Oceanus, 26, 2, 1983). The U.S. Geological Survey studied the Georges Bank drilling activities as well. Barium from drilling muds was detected at the sites, but in decreasing concentrations at distances away from drilling rigs. There was no evidence that the discharges caused biological changes. According to Ryan: “Postdrilling concentrates of barium were found to be within the range of predilling concentrations measured at other locations on the Bank. Concentrations of other metals measured were low and characteristic of unpolluted, coarse-grained sediment in other Continental Shelf areas.”

103

Pioneering offshore excellence  

SciTech Connect

Hibernia Management and Development Company Ltd. (HMDC) was formed in 1990 by a consortium of oil companies to develop their interests in the Hibernia and Avalon reservoirs offshore Newfoundland in a safe and environmentally responsible manner. The reservoirs are located 315km ESE of St. John`s in the North Atlantic. The water depth is about 80m. The entire Hibernia field is estimated to contain more than three billion barrels of oil in place and the owners development plan area is estimated to contain two billion barrels. Recoverable reserves are estimated to be approximately 615 million barrels. The Hibernia reservoir, the principle reservoir, is located at an average depth of 3,700m. HMDC is building a large concrete gravity based structure (GBS) that which will support the platform drilling and processing facilities and living quarters for 280 personnel. In 1997 the platform will be towed to the production site and production will commence late 1997. Oil will be exported by a 2 km long pipeline to an offshore loading system. Dynamically positioned tankers will then take the oil to market. Average daily production is expected to plateau between 125,000 and 135,000 BOPD. It will be the first major development on the east coast of Canada and is located in an area that is prone to pack ice and icebergs.

Kent, R.P.; Grattan, L.

1996-11-01

104

Fair shares: a preliminary framework and case analyzing the ethics of offshoring.  

PubMed

Much has been written about the offshoring phenomenon from an economic efficiency perspective. Most authors have attempted to measure the net economic effects of the strategy and many purport to show that "in the long run" that benefits will outweigh the costs. There is also a relatively large literature on implementation which describes the best way to manage the offshoring process. But what is the morality of offshoring? What is its "rightness" or "wrongness?" Little analysis of the ethics of offshoring has been completed thus far. This paper develops a preliminary framework for analyzing the ethics of offshoring and then applies this framework to basic case study of offshoring in the U.S. The paper following discusses the definition of offshoring; shifts to the basic philosophical grounding of the ethical concepts; develops a template for conducting an ethics analysis of offshoring; applies this template using basic data for offshoring in the United States; and conducts a preliminary ethical analysis of the phenomenon in that country, using a form of utilitarianism as an analytical baseline. The paper concludes with suggestions for further research. PMID:19629753

Gordon, Cameron; Zimmerman, Alan

2010-06-01

105

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

106

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

107

Ice interaction with offshore structures  

SciTech Connect

Oil platforms and other offshore structures being built in the arctic regions must be able to withstand icebergs, ice islands, and pack ice. This reference explain the effect ice has on offshore structures and demonstrates design and construction methods that allow such structures to survive in harsh, ice-ridden environments. It analyzes the characteristics of sea ice as well as dynamic ice forces on structures. Techniques for ice modeling and field testing facilitate the design and construction of sturdy, offshore constructions. Computer programs included.

Cammaert, A.B.; Muggeridge, D.B.

1988-01-01

108

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

109

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....

110

Hybrid offshore structure  

SciTech Connect

An articulated offshore structure is described for use in a body of water, the structure comprising: a substantially rigid lower section, the lower section extending upwardly from the bottom of the body of water to a pivot point located intermediate the bottom and the surface of the body of water; a compliant upper section extending upwardly from the pivot point to a position at or above the surface of the body of water; pivot means located proximate pivot point, the pivot means interposed between and connected to the lower section and upper section and adapted to permit the upper section to pivot laterally relative to the lower section; torsion means connected to the upper section and the lower section, the torsion means adapted to transmit torsional loads from the upper section to the lower section; the pivot means being positioned above the bottom of the body of water a distance of between about 10 percent and about 50 percent of the total depth of the body of water so as to substantially minimize the weight of the structure while maintaining the flexural vibration period of the structure at or below a preselected maximum flexural vibration period.

Finn, L.D.; Maus, L.D.

1986-09-09

111

What can wave energy learn from offshore oil and gas?  

PubMed

This title may appear rather presumptuous in the light of the progress made by the leading wave energy devices. However, there may still be some useful lessons to be learnt from current 'offshore' practice, and there are certainly some awful warnings from the past. Wave energy devices and the marine structures used in oil and gas exploration as well as production share a common environment and both are subject to wave, wind and current loads, which may be evaluated with well-validated, albeit imperfect, tools. Both types of structure can be designed, analysed and fabricated using similar tools and technologies. They fulfil very different missions and are subject to different economic and performance requirements; hence 'offshore' design tools must be used appropriately in wave energy project and system design, and 'offshore' cost data should be adapted for 'wave' applications. This article reviews the similarities and differences between the fields and highlights the differing economic environments; offshore structures are typically a small to moderate component of field development cost, while wave power devices will dominate overall system cost. The typical 'offshore' design process is summarized and issues such as reliability-based design and design of not normally manned structures are addressed. Lessons learned from poor design in the past are discussed to highlight areas where care is needed, and wave energy-specific design areas are reviewed. Opportunities for innovation and optimization in wave energy project and device design are discussed; wave energy projects must ultimately compete on a level playing field with other routes to low CO? energy and/or energy efficiency. This article is a personal viewpoint and not an expression of a ConocoPhillips position. PMID:22184670

Jefferys, E R

2012-01-28

112

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

113

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

114

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

115

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

E-print Network

Offshore Coastal Wind Speed Gradients: issues for the design and development of large offshore@globalnet.co.uk · WEB SITE: www.multi-science.co.uk #12;Offshore Coastal Wind Speed Gradients: issues for the design-situ and remote sensing data from offshore wind farms in Denmark, are used to examine both horizontal and vertical

Pryor, Sara C.

116

Maritime and offshore structure maintenance  

SciTech Connect

This volume provides the most up-to date material available on methods of keeping maritime installations operational. It also draws out the exceptionally valuable expertise that has been gained from servicing the major installations in the North Sea and elsewhere in the world. Subjects cover maintenance and repair including a detailed analysis of structural maintenance on specific structures. Papers include expertise in North Sea structures, corrosion protection of a North Sea platform, maintenance of ports overseas, East Africa, low maintenance concrete and maintenance of steel offshore structures. Guidelines are also included for the inspection and maintenance of marine facilities and offshore installations.

Not Available

1986-01-01

117

Offshore wind resource assessment through satellite images  

E-print Network

1 Slide no. 4 Offshore wind resource assessment through satellite images Charlotte Bay Hasager images for offshore wind ressource assessment in lieu of in-situ mast observations #12;4 Slide no Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps in the North

118

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 2004 #12;Offshore Wind Farms: Guidance Note for Environmental Impact Assessment in Respect of FEPA

119

Offshore Wind Power Farm Environmental Impact Assessment  

E-print Network

Horns Rev Offshore Wind Power Farm Environmental Impact Assessment on Water Quality #12;Prepared with a planned 150 MW offshore wind farm at Horns Rev, an assessment was made of the effects the wind farm would for the preparation of EIA studies for offshore wind farms." Horns Rev is situated off Blåvands Huk, which is Denmark

120

Eighteenth annual offshore technology conference. Volume 1  

SciTech Connect

These sixty papers were given at a conference on offshore technology. Topics covered include friction effects of driving piles into sea beds of various compositions, wave forces on offshore platforms, stability, materials testing of various components such as plates, legs, wellheads, pipe joints, and protection of offshore platforms against ice and collision with icebergs.

Not Available

1986-01-01

121

Potential threats to offshore platforms  

Microsoft Academic Search

Increasingly spectacular acts of terrorism have led to growing concern that terrorists will move beyond the symbols of society and directly attack its technological and industrial vulnerabilities. Offshore platforms have been frequently mentioned among the potential targets terrorists might attack. This concern, however, has not resulted in extensive research like that devoted to possible threats to nuclear facilities, which have

1988-01-01

122

Offshore gas compression lags behind  

Microsoft Academic Search

Potentially vast oil and gas reserves exist in deeper water, discovered but inaccessible because present production technology has only reached the halfway point. Needs for gas compression offshore are similar to onshore: to compress natural casinghead (off separator) gas to transmission line pressures, to gas-lift wells incapable of flowing into limited flexibility gathering systems, and to compress for injection into

E. C. Jr

1969-01-01

123

Harmonic filtering for offshore industry  

Microsoft Academic Search

The application of a large number of Adjustable Speed Drives (ASDs) operating Electric Submersible Pumps (ESPs) on two separate offshore platforms, connected to a limited electrical power system on a tanker feeding power to the platforms via subsea power cables, presents technical problems involving high levels of harmonic distortions that experience shows can impact the overall system reliability. Here such

S. J. Merhej; W. H. Nichols

2009-01-01

124

Foundations for offshore wind turbines.  

PubMed

An important engineering challenge of today, and a vital one for the future, is to develop and harvest alternative sources of energy. This is a firm priority in the UK, with the government setting a target of 10% of electricity from renewable sources by 2010. A component central to this commitment will be to harvest electrical power from the vast energy reserves offshore, through wind turbines or current or wave power generators. The most mature of these technologies is that of wind, as much technology transfer can be gained from onshore experience. Onshore wind farms, although supplying 'green energy', tend to provoke some objections on aesthetic grounds. These objections can be countered by locating the turbines offshore, where it will also be possible to install larger capacity turbines, thus maximizing the potential of each wind farm location. This paper explores some civil-engineering problems encountered for offshore wind turbines. A critical component is the connection of the structure to the ground, and in particular how the load applied to the structure is transferred safely to the surrounding soil. We review previous work on the design of offshore foundations, and then present some simple design calculations for sizing foundations and structures appropriate to the wind-turbine problem. We examine the deficiencies in the current design approaches, and the research currently under way to overcome these deficiencies. Designs must be improved so that these alternative energy sources can compete economically with traditional energy suppliers. PMID:14667305

Byrne, B W; Houlsby, G T

2003-12-15

125

Activity Based Physics Alternative Homework Assignments  

NSDL National Science Digital Library

This resource is a collection of introductory physics homework assignments developed as an alternative to traditional textbook exercises. These assignments were designed for use with the Activity-Based Physics instructional method (ABP). Students use observational skills and mathematical modeling, combined with basic physics, to solve problems related to a single situation, such as riding a bicycle or tailgating while driving. Each assignment integrates a variety of concepts and requires students to establish cause and effect relationships. Assignments are available in the following subject categories: mechanics, electricity and magnetism, and waves.

Vick, K.; Redish, Edward F.; Cooney, Patrick

2008-11-21

126

The influence of humidity fluxes on offshore wind speed profiles  

NASA Astrophysics Data System (ADS)

Wind energy developments offshore focus on larger turbines to keep the relative cost of the foundation per MW of installed capacity low. Hence typical wind turbine hub-heights are extending to 100 m and potentially beyond. However, measurements to these heights are not usually available, requiring extrapolation from lower measurements. With humid conditions and low mechanical turbulence offshore, deviations from the traditional logarithmic wind speed profile become significant and stability corrections are required. This research focuses on quantifying the effect of humidity fluxes on stability corrected wind speed profiles. The effect on wind speed profiles is found to be important in stable conditions where including humidity fluxes forces conditions towards neutral. Our results show that excluding humidity fluxes leads to average predicted wind speeds at 150 m from 10 m which are up to 4% higher than if humidity fluxes are included, and the results are not very sensitive to the method selected to estimate humidity fluxes.

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

2010-05-01

127

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

128

Offshore petroleum security: Analysis of offshore security threats, target attractiveness, and the international legal framework for the protection and security of offshore petroleum installations.  

E-print Network

??The offshore petroleum industry is of critical importance to the global economy. Offshore petroleum installations are considered elements of critical national infrastructure in many nation-States… (more)

Kashubsky, Mikhail

2011-01-01

129

Gas lift systems make ideal offshore workers  

SciTech Connect

With a low initial installation cost and small footprint, gas lift systems are well suited for offshore installations where compressed gas is usually already available. These systems are used on multiple and slimhole completions and handle sandy conditions well. They are also used to kick off wells that will flow naturally once the heavier completion fluids leave the production string. Gas lift itself is a mature workaday technology. Measurement and control of gas flow is an area of intense development in gas lift technology. One new control method involves production of multiple completions through a single wellbore. Typically, gas lift valves are opened and closed through tubing pressure. But downhole measurement technology does not yet yield information good enough for stable gas lift control of multiple completions. Gas lift is proving to be a useful AL technique in conjunction with electric submersible pumps (ESP). Located above the ESP pump, the gas lift can reduce the head and allow greater flow. This is helpful when small casing restricts the size of the downhole ESP pump. Wells can usually be produced by the gas lift alone in case of ESP failure, or by replacing the ESP where schedules, high repair costs or low prices rule out repair.

NONE

1999-05-01

130

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

131

Pipelaying in artic offshore waters  

SciTech Connect

The present invention provides a method and apparatus for constructing pipelines in Arctic offshore waters by a directional drilling technique, thereby minimizing exposure to ice gouging and eliminating the hazards associated with unstable permafrost. A special drilling-pipe-line construction vessel is also provided which has a conical shape with reinforced outer walls to resist ice forces, which vessel includes means to install deep underground pipeline segments and means to connect and protect the pipe ends.

Langner, C. G.

1985-11-19

132

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

133

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

134

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

135

Infauna Monitoring Horns Rev Offshore Wind Farm  

E-print Network

#12;Infauna Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2004 Published: 21 April-2004................................................. 48 Wind farm area (Turbine), Reference area (Ref

136

Elements of designing for cost  

NASA Technical Reports Server (NTRS)

During recent history in the United States, government systems development has been performance driven. As a result, systems within a class have experienced exponentially increasing cost over time in fixed year dollars. Moreover, little emphasis has been placed on reducing cost. This paper defines designing for cost and presents several tools which, if used in the engineering process, offer the promise of reducing cost. Although other potential tools exist for designing for cost, this paper focuses on rules of thumb, quality function deployment, Taguchi methods, concurrent engineering, and activity-based costing. Each of these tools has been demonstrated to reduce cost if used within the engineering process.

Dean, Edwin B.; Unal, Resit

1992-01-01

137

Elements of Designing for Cost  

NASA Technical Reports Server (NTRS)

During recent history in the United States, government systems development has been performance driven. As a result, systems within a class have experienced exponentially increasing cost over time in fixed year dollars. Moreover, little emphasis has been placed on reducing cost. This paper defines designing for cost and presents several tools which, if used in the engineering process, offer the promise of reducing cost. Although other potential tools exist for designing for cost, this paper focuses on rules of thumb, quality function deployment, Taguchi methods, concurrent engineering, and activity based costing. Each of these tools has been demonstrated to reduce cost if used within the engineering process.

Dean, Edwin B.; Unal, Resit

1992-01-01

138

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

E-print Network

exploration, drilling and related maintenance tasks. Hercules Offshore operates in key oil producing sitesAbout Hercules Offshore Headquartered in Houston, Texas, Hercules Offshore serves the oil and gas industry with the largest fleet of mobile drilling platforms in the U.S. Gulf of Mexico, and the fourth

Fisher, Kathleen

139

76 FR 11503 - National Offshore Safety Advisory Committee; Vacancies  

Federal Register 2010, 2011, 2012, 2013

...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

140

78 FR 18618 - National Offshore Safety Advisory Committee; Vacancies  

Federal Register 2010, 2011, 2012, 2013

...in support of the exploration of offshore mineral and energy resources insofar...or similar entities engaged in offshore drilling; (c) One member representing...entities engaged in the support, by offshore supply vessels or other...

2013-03-27

141

76 FR 62817 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...support of the exploration of offshore mineral and energy resources...operate large OSVs. (6) Offshore Operators Committee (OOC...Team for DEEPWATER HORIZON drilling rig explosion and sinking...connection with the development of offshore renewable energy on the...

2011-10-11

142

78 FR 63233 - National Offshore Safety Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...Foreign Flag Mobile Offshore Drilling Units. (4) Safety...Foreign Flag Mobile Offshore Drilling Units (MODUs...International Association of Drilling Contractors discussion...International and National offshore oil exploration...

2013-10-23

143

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Mobile offshore drilling units. 15.520 Section...Vessels § 15.520 Mobile offshore drilling units. (a) The requirements in this section for mobile offshore drilling units (MODUs)...

2011-10-01

144

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Mobile offshore drilling units. 15.520 Section...Vessels § 15.520 Mobile offshore drilling units. (a) The requirements in this section for mobile offshore drilling units (MODUs)...

2013-10-01

145

77 FR 26562 - Mobile Offshore Drilling Unit Dynamic Positioning Guidance  

Federal Register 2010, 2011, 2012, 2013

...USCG-2011-1106] Mobile Offshore Drilling Unit Dynamic Positioning Guidance...emergency procedures on a Mobile Offshore Drilling Unit. We received comments...particularly true for Mobile Offshore Drilling Units (MODUs), where a...

2012-05-04

146

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Mobile offshore drilling units. 15.520 Section...Vessels § 15.520 Mobile offshore drilling units. (a) The requirements in this section for mobile offshore drilling units (MODUs)...

2010-10-01

147

78 FR 18614 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...in support of the exploration of offshore mineral and energy resources insofar...Hazardous Areas on Foreign Flag Mobile Offshore Drilling Units (MODUs); (c) Safety...Register notices that affect the offshore industry; (4) USCG Outer...

2013-03-27

148

76 FR 39410 - National Offshore Safety Advisory Committee; Vacancies  

Federal Register 2010, 2011, 2012, 2013

...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

149

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Mobile offshore drilling units. 15.520 Section...Vessels § 15.520 Mobile offshore drilling units. (a) The requirements in this section for mobile offshore drilling units (MODUs)...

2012-10-01

150

77 FR 17491 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...and Federal Register notices that affect the offshore industry. (7) Offshore Operators Committee (OOC) update regarding...the industry comments received from the Mobile Offshore Drilling Unit Guidance Policy, Notice of...

2012-03-26

151

47 CFR 22.1007 - Channels for offshore radiotelephone systems.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Channels for offshore radiotelephone systems...Offshore Radiotelephone Service § 22.1007 Channels for offshore radiotelephone systems. The channels listed in this section are...

2013-10-01

152

47 CFR 22.1007 - Channels for offshore radiotelephone systems.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Channels for offshore radiotelephone systems...Offshore Radiotelephone Service § 22.1007 Channels for offshore radiotelephone systems. The channels listed in this section are...

2012-10-01

153

How Much? Cost Models for Online Education.  

ERIC Educational Resources Information Center

Reviews some of the research being done in the area of cost models for online education. Describes a cost analysis handbook; an activity-based costing model that was based on an economic model for traditional instruction at the Indiana University Purdue University Indianapolis; and blending other costing models. (LRW)

Lorenzo, George

2001-01-01

154

Recommendations for dealing with asphaltene or wax problems in offshore production facilities  

SciTech Connect

Many production facilities around the world suffer from either asphaltene or wax deposition. Asphaltene and wax problems are seriously threatening the economic production from many offshore reservoirs due to the high cost of remedial measures. Offshore production facilities are especially susceptible to asphaltene or wax deposition for a number of reasons. One indispensable requirement for dealing with these problems, that offshore production facilities usually lack, is extra storage capacity for temporarily storing asphaltene or wax cuttings and washings away from inflicted equipment. The cuttings and washings, even if temporary storage were available, need to be dealt with nearly on a daily basis. Providing equipment to process the slop offshore is expensive and messy (environmentally). Hence, the cuttings and washings, in many cases, must be carried away to onshore slop processing facilities. The above discussion assumes, of course, that the operator has already found the best technology (e.g., tools, chemicals, etc.) for removing the deposits from the offshore equipment, which in itself is another challenge that precedes the disposal problem. All of the above considerations underscore the fact that the best way of dealing with the asphaltene and wax problems is to prevent them, where possible. This paper presents ideas and methodologies on how to predict, diagnose, prevent, or mitigate problems caused by organic deposition in offshore production facilities. In one facility where these ideas were put to use, despite the debilitating magnitude of the asphaltene problems encountered, the field has been successfully produced for over 14 years with minimum environmental impact.

Leontaritis, K.J. [AsphWax Inc., Sugar Land, TX (United States)

1996-09-01

155

Offshore drilling and production structure  

SciTech Connect

The invention relates to an off-shore marine structure that provides an elevated support for a drilling and/or production platform. A structure comprised of three interlocking components is provided, the first component being a large foundation base installed on the sea bed; the second being a conical shaped support component which is engagable with the foundation base and which, releasably carries the third platform supporting component. In the preferred form, the platform supporting component comprises a centrally-disposed vertical column, means being provided to facilitate engagement of the column with the platform and the second component and to subsequently elevate the platform to an operating height above sea level.

Crockett, R.K.; Palmer, H.E.; Stenning, D.G.

1982-02-09

156

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

157

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

158

Powering the World: Offshore Oil & Gas Production  

E-print Network

Powering the World: Offshore Oil & Gas Production Macondo post-blowout operations Tad Patzek;Talk Outline. . . Fuels that run the U.S. and world Drilling and fracturing primer Complexity and risks, not resources or energy potentially available Offshore fields will be producing an increasing portion of global

Patzek, Tadeusz W.

159

CONMOW: Condition Monitoring for Offshore Wind Farms  

E-print Network

1 CONMOW: Condition Monitoring for Offshore Wind Farms Edwin Wiggelinkhuizen, Theo Verbruggen, Henk in practice the European project CONMOW (Condition Monitoring for Offshore Wind Farms) was started in November 2002. A small wind farm of five turbines has been instrumented with several condition monitoring

160

Corrosion control survey methods for offshore pipelines  

Microsoft Academic Search

Construction, operation, and maintenance of offshore pipelines and other facilities are expensive. The consequences of an offshore corrosion failure can be devastating. For these reasons, cathodic protection (CP) has become a universally applied technique for mitigating corrosion. Marine pipelines are typically provided with CP by bracelet anodes of zinc or aluminum. Impressed current systems at platforms or onshore are also

C. P. Weldon; D. Kroon

1992-01-01

161

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

162

Economics, new technology improve Danish offshore oil recovery  

SciTech Connect

Cost-efficient development concepts and technologies, such as horizontal wells and water injection, have almost tripled the expected ultimate oil recovery from Danish offshore fields. All currently produced Danish oil and gas is from chalk reservoirs. The Danish Energy Agency`s strategies for research and development of improved recovery techniques is related to classifying Danish calk fields into three different reservoir types according to flow characteristics and initial oil saturation. This paper reviews these classification techniques and the methods of extraction for each.

Mortensgaard, A. [Danish Energy Agency, Copenhagen (Denmark)

1996-06-10

163

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

164

Offshore propagation of coastal precipitation  

NASA Astrophysics Data System (ADS)

This work focuses on the seaward propagation of coastal precipitation with or without mountainous terrain nearby. Offshore of India, diurnal propagation of precipitation is observed in the Bay of Bengal. On the eastern side of the Bay a diurnal but non-propagating signal is observed near the west coast of Burma. This asymmetry suggests that the propagating mechanism is inertio-gravity waves. Perturbations generated by the diurnal heating over the coastal mountains of India propagate offshore, amplify in the upwind direction and dissipate in the downwind direction owing to critical level consideration. A linear model is applied to study these gravity waves. Analytical analysis is performed for various heating depths, mountain widths, stability, Coriolis effect, background mean wind, and friction. We assess how these affect the amplitude, dissipation, initiation phase, and propagation speed of the diurnal disturbance. The propagation of precipitation triggered by land/sea breeze, are distinguishable from a mountain-plain circulation. For mountain breeze, convection from mountain heating starts earlier; propagates slower; and damps faster than that of the land breeze. For mountains near the coast, the slower propagation and stronger earlier convection are due to the combination of two dynamical mechanisms. The propagation of precipitation is initially triggered by mountain breeze near the coastal mountain. Over the open ocean, the dominant signal propagates as that of the land breeze but with stronger convection.

Li, Yanping; Carbone, Rit

2013-04-01

165

Cold box shuttle - a system for the recovery of offshore gas - applied to Sweden  

SciTech Connect

The recovery of offshore gas as LNG, by heat exchange on an LNG carrier with liquid nitrogen, was studied in the context of a North Sea gas source and a Swedish market. The technical suitability of each component of this cold-box shuttle system was examined and the capital and operating costs were estimated. It was concluded that the system is technically robust and flexible and that, for the case studied, gas could be landed at a competitive cost.

Smith, D.; Eriksson, L.; Pehrsson, L.O.; Strom-Olsen, H.

1982-01-01

166

Segmentation of the transportation market with regard to activity-based freight transport modelling  

Microsoft Academic Search

Transport models are used to estimate the expected effects of policy measures—such as infrastructure building, upgrading or the introduction of a highway toll—on the users of a transport system. The results of transport models are a necessary input for cost–benefit analyses, which answer the question of whether a policy measure improves the economic welfare. In passenger transport modelling, the activity-based

G. Liedtke; H. Schepperle

2004-01-01

167

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

168

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

169

Riser and wellhead monitoring for improved offshore drilling operations  

E-print Network

Riser and wellhead monitoring for improved offshore drilling operations Gullik A. Jensen, Ph ­ Offshore drilling with riser ­ On the riser and the riser joints ­ On damage and consequences · Operational · Two systems delivered. #12;Offshore drilling with riser ...a quick introduction #12;Offshore drilling

Nørvåg, Kjetil

170

OFFSHORE WIND FARM LAYOUT OPTIMIZATION (OWFLO) PROJECT: AN INTRODUCTION  

E-print Network

OFFSHORE WIND FARM LAYOUT OPTIMIZATION (OWFLO) PROJECT: AN INTRODUCTION C. N. Elkinton* , J. F focused on land-based wind farms, rather than on offshore farms. The conventional method used to lay out that distinguish offshore wind farms from their onshore counterparts, the Offshore Wind Farm Layout Optimization

Massachusetts at Amherst, University of

171

Offshore Series Wind Turbine Variable Hub heights & rotor diameters  

E-print Network

3.6MW Offshore Series Wind Turbine GE Energy #12;Feature Variable Hub heights & rotor diameters-savings feature, considering the rigors of offshore power generation. The 3.6 MW offshore wind turbine also, for both on and offshore use. Special features include... As the world's first commercially available wind

Firestone, Jeremy

172

Quantifying the hurricane risk to offshore wind turbines  

E-print Network

Quantifying the hurricane risk to offshore wind turbines Stephen Rosea , Paulina Jaramilloa,1. Turbine tower buckling has been observed in typhoons, but no offshore wind turbines have yet been built be destroyed by hurricanes in an offshore wind farm. We apply this model to estimate the risk to offshore wind

Jaramillo, Paulina

173

Certification of offshore mooring steel wire ropes  

SciTech Connect

The trend to produce oil in increasingly deeper water has led to the development of floating production solutions for the exploitation of the energy resources in these areas. It is a fact that steel wire ropes have been used and are being proposed as line segments in the majority of the mooring systems of these units/ships. This paper specifies requirements for the materials, design, manufacture and testing of large diameter offshore mooring steel wire ropes and may serve as a technical reference document in contractual matters between the purchaser and the manufacturer. Typical applications covered are permanently moored floating production systems (FPS), offshore loading systems and mobile offshore units.

Lohne, P.W. [Det Norske Veritas AS, Oslo (Norway)

1996-12-31

174

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

175

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

176

Cost Management of Medical Equipment Maintenance  

Microsoft Academic Search

In the present study we combine Activity Based Costing (ABC) with a microprocess-based custom-made management system used to control of the medical equipment maintenance service performed by a clinical engineering group in a public health institution in Brazil. Results show the cost of service orders calculated through the allocation of the expenditure per cost center to activities performed during the

L. S. Rocha; J. W. M. Bassani

2004-01-01

177

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

178

Engineering Challenges for Floating Offshore Wind Turbines  

SciTech Connect

The major objective of this paper is to survey the technical challenges that must be overcome to develop deepwater offshore wind energy technologies and to provide a framework from which the first-order economics can be assessed.

Butterfield, S.; Musial, W.; Jonkman, J.; Sclavounos, P.

2007-09-01

179

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

180

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

181

Future characteristics of Offshore Support Vessels  

E-print Network

The objective of this thesis is to examine trends in Offshore Support Vessel (OSV) design and determine the future characteristics of OSVs based on industry insight and supply chain models. Specifically, this thesis focuses ...

Rose, Robin Sebastian Koske

2011-01-01

182

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

183

31 CFR 595.407 - Offshore transactions.  

Code of Federal Regulations, 2013 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM SANCTIONS REGULATIONS Interpretations § 595.407 Offshore transactions. The prohibitions contained in §...

2013-07-01

184

Research misconduct oversight: defining case costs.  

PubMed

This study uses a sequential mixed method study design to define cost elements of research misconduct among faculty at academic medical centers. Using time driven activity based costing, the model estimates a per case cost for 17 cases of research misconduct reported by the Office of Research Integrity for the period of 2000-2005. Per case cost of research misconduct was found to range from $116,160 to $2,192,620. Research misconduct cost drivers are identified. PMID:24551963

Gammon, Elizabeth; Franzini, Luisa

2013-01-01

185

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

186

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

187

From covalent glycosidase inhibitors to activity-based glycosidase probes.  

PubMed

Activity-based protein profiling has emerged as a powerful discovery tool in chemical biology and medicinal chemistry research. Success of activity-based protein profiling hinges on the presence of compounds that can covalently and irreversibly bind to enzymes, do so selectively in the context of complex biological samples, and subsequently report on the selected pool of proteins. Such tagged molecules featuring an electrophilic trap, termed activity-based probes, have been developed with most success for serine hydrolases and various protease families (serine proteases, cysteine proteases, proteasomes). This concept presents the current progress and future directions in the design of activity-based probes targeting retaining glycosidases, enzymes that employ a double displacement mechanism in the hydrolysis of glycosidic bonds with overall retention. In contrast to inverting glycosidases, retaining glycosidases form a covalent intermediate with their substrates during the catalytic process and are therefore amenable to activity-based protein profiling studies. PMID:25100671

Willems, Lianne I; Jiang, Jianbing; Li, Kah-Yee; Witte, Martin D; Kallemeijn, Wouter W; Beenakker, Thomas J N; Schröder, Sybrin P; Aerts, Johannes M F G; van der Marel, Gijsbert A; Codée, Jeroen D C; Overkleeft, Hermen S

2014-08-25

188

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

189

Slow motion responses of compliant offshore structures  

E-print Network

SLOW MOTION RESPONSES OF COMPLIANT OFFSHORE STRUCTURES A Thesis by PEIMIN CAO Submitted to the Office of Gradnate Stndies of Texas AM'I University in partial fnliillment of the requirements for the degree of hiIASTER OF SCIENCE December... 1996 Major Subject: Ocean Engineering SLOW MOTION RESPONSES OF COMPLIANT OFFSHORE STRUCTURES A Thesis by PEIMIN CAO Submitted to Texas AEcM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved...

Cao, Peimin

2012-06-07

190

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

191

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

192

Horns RevHorns Rev Offshore Wind FarmOffshore Wind Farm  

E-print Network

Horns RevHorns Rev Offshore Wind FarmOffshore Wind Farm #12;Prepared for: ELSAM A/S, Overgade 45......................................................................................................6-1 Annex 6.1. Wind Farm Area. Spring 2001.............................................................................6-1 Annex 6.2. Wind Farm Area. Autumn 2001

193

Using airborne and satellite SAR for wake mapping offshore  

NASA Astrophysics Data System (ADS)

Offshore wind energy is progressing rapidly around Europe. One of the latest initiatives is the installation of multiple wind farms in clusters to share cables and maintenance costs and to fully exploit premium wind resource sites. For siting of multiple nearby wind farms, the wind turbine wake effect must be considered. Synthetic aperture radar (SAR) is an imaging remote sensing technique which offers a unique opportunity to describe spatial variations of wind speed offshore. For the first time an airborne SAR instrument was used for data acquisition over a large offshore wind farm. The aim was to identify the turbine wake effect from SAR-derived wind speed maps as a downstream region of reduced wind speed. The aircraft SAR campaign was conducted on 12 October 2003 over the wind farm at Horns Rev in the North Sea. Nearly simultaneous measurements were acquired over the area by the SAR on board the ERS-2 satellite. In addition, meteorological data were collected. Both aircraft and satellite SAR-derived wind speed maps showed significant velocity deficits downstream of the wind farm. Wind speed maps retrieved from aircraft SAR suggested deficits of up to 20% downstream of the last turbine, whereas satellite SAR-derived maps showed deficits of the order of 10%. The difference originated partly from the two different reference methods used for normalization of measured wind speeds. The detected region of reduced wind speed had the same width as the wind turbine array, indicating a low degree of horizontal wake dispersion. The downstream wake extent was approximately 10 km, which corresponds well with results from previous studies and with wake model predictions. Copyright

Christiansen, Merete B.; Hasager, Charlotte B.

2006-09-01

194

Application of low density foam pigs offshore Brazil  

SciTech Connect

In complex offshore installations, such as in the Campos Basin, it is relatively common to encounter pipeline systems where conventional pigs can not be run due to several factors. Changing pipe diameters, and presence of wet X-mas trees and manifolds are the most troublesome ones. In this work a new successful concept of using low cost and low density foam pigs for both liquid removal in wet-gas pipelines, and paraffin removal in oil and multiphase flow pipelines, is presented. Experimental work conducted in a 4 in laboratory facility, including a small scale glass manifold and a 6 in steel manifold, proved these pigs to be very effective. The performance of almost all kind of flexible polyurethane foams manufactured in Brazil is evaluated. Three field tests are also reported. The first low density foam pig operation was performed on a 127 mile long, 16 in diameter wet-gas offshore pipeline where the foam pig showed even higher liquid removal efficiency than the conventional inflatable spheres. The second operation was performed on a 6 mile long, 12 in diameter multiphase production offshore pipeline, which has never been pigged during its 9 year operation, and resulted in the removal of approximately 200 tons of paraffin. Finally, the third successful case is the cleaning of a 2 mile long flexible flow line of a subsea completed satellite well, in which the foam pigs were sent through a 2.5 in gas lift line, through a wet x-mas tree, not designed to be pigged, and then back through the 4 in production flow line. In spite of the fact that this paper is focusing on condensate and paraffin removal in pipeline, the basic principles can be applied to several kinds of operations: general pipeline cleaning; products separation in pipeline; corrosion evaluation; chemical product application.

Lima, P.C.R.; Alves, S.J. [Petrobras, Rio de Janeiro (Brazil)

1995-12-31

195

Connecting onshore and offshore near-surface geology: Delaware's sand inventory project  

USGS Publications Warehouse

Beginning in 1988, the Delaware Geological Survey began a program to inventory on-land sand resources suitable for beach nourishment. The inventory included an assessment of the native beach textures using existing data and developing parameters of what would be considered suitable sand textures for Delaware's Atlantic beaches. An assessment of the economics of on-land sand resources was also conducted, and it was determined that the cost of the sand was competitive with offshore dredging costs. In addition, the sand resources were put into a geologic context for purposes of predicting which depositional environments and lithostratigraphic units were most likely to produce suitable sand resources. The results of the work identified several suitable on-land sand resource areas in the Omar and Beaverdam formations that were deposited in barrier-tidal delta and fluvial-estuarine environments, respectively. The identified on-land resources areas have not been utilized due to difficulties of truck transport and development pressures in the resource areas. The Delaware Geological Survey's participation in years 8, 9, and 10 of the Continental Margins Program was developed to extend the known resource areas onshore to offshore Delaware in order to determine potential offshore sand resources for beach nourishment. Years 8 and 9 involved primarily the collection of all available data on the offshore geology. These data included all seismic lines, surface grab samples, and cores. The data were filtered for those that had reliable locations and geologic information that could be used for geologic investigations. Year 10 completed the investigations onshore by construction of a geologic cross-section from data along the coast of Delaware from Cape Henlopen to Fenwick. This cross section identified the geologic units and potential sand resource bodies as found immediately along the coast. These units and resources are currently being extended offshore and tied to known and potential sand resources as part of the continuing cooperative effort between the Delaware Geological Survey and the Minerals Management Service's INTERMAR office as sand resources are identified in federal waters off Delaware. Offshore sand resources are found in the Pliocene Beaverdam Formation offshore where overlying Quaternary units have been stripped, in the tidal delta complexes of several Quaternary units likely equivalent to the onshore Omar Formation, and in late Pleistocene- and Holocene-age shoal complexes. Onshore lithostratigraphic units can be traced offshore and show another reason for continued geologic mapping both onshore and offshore.The Delaware Geological Survey's participation in years 8, 9, and 10 of the Continental Margins Program was developed to extend the known resource areas onshore to offshore Delaware in order to determine potential offshore sand resources for beach nourishment. Years 8 and 9 involved primarily the collection of all available data on the offshore geology. These data included all seismic lines, surface grab samples, and cores. The data were filtered for those that had reliable locations and geologic information that could be used for geologic investigations. Year 10 completed the investigations onshore by construction of a geologic cross-section from data along the coast of Delaware from cape Henlopen to Fenwick.

Ramsey, K.W.; Jordan, R.R.; Talley, J.H.

1999-01-01

196

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

197

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

198

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

199

Offshore wind resource mapping using satellite observations  

NASA Astrophysics Data System (ADS)

Offshore wind mapping using satellite observations has been developed in the last decade. The archives of scatterometer and SAR images useful for ocean wind mapping contain data from around 8 to 15 years. For the statistical analysis it is important to include high numbers of observations. For scatterometer the wind resource analysis can be done based on around 6.500 individual readings, i.e. two observations daily since July 1999. Comparison results between meteorological observations at the Horns Rev offshore wind farm has been shown to compare well with QuikSCAT winds. Also SAR-based wind mapping has been compared to the same observations with good results. At present new analysis using more observations, available through the ESA EO Scandia-SAR project, show new maps of offshore winds in the North Sea and Baltic Sea. During year 2009 the first analysis for the new EU-Norsewind project (2008-2012) will be conducted. This project aims to map wind resource for a large offshore region in Northern Europe based on satellite, lidar and masts offshore.

Hasager, C. B.; Badger, M.

2009-04-01

200

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

201

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

202

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

203

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

204

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.

205

46 CFR 15.520 - Mobile offshore drilling units (MODUs).  

... 2014-10-01 2014-10-01 false Mobile offshore drilling units (MODUs). 15.520 Section 15.520...Requirements; Inspected Vessels § 15.520 Mobile offshore drilling units (MODUs). (a) The requirements in...

2014-10-01

206

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 Bottom Substrate Monitoring Horns Rev Offshore Wind Farm Annual Status Report 2003 Published: 14 May 2004

207

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.

208

Plastic Limit Analysis of Offshore Foundation and Anchor  

E-print Network

This study presents the applications of plastic limit analysis to offshore foundations and anchors, including the drag embedment anchors (DEAs) for mobile offshore drilling units (MODU’s) and spudcan foundations for jack-up platforms. In deep waters...

Chi, Chao-Ming

2010-10-12

209

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

210

Exploration potential of offshore northern California basins  

SciTech Connect

A series of exploratory wells was drilled in the northern California offshore basins in the 1960s following leasing of federal tracts off northern California, Oregon, and Washington. The drilling, although encountering numerous oil shows, was considered at the time to indicate low prospectivity in an area that extended as far south as the offshore Santa Maria basin. However, subsequent major discoveries in this decade in the offshore Santa Maria basin, such as the Point Arguello field, indicate that these offshore basins may be highly prospective exploration targets. Many of the key features of Monterey production in central and southern California are also present in the offshore basins of northern California. A new 5-year leasing plan has scheduled leasing in the northern California OCS starting in early 1989. The first basins on the schedule, the Point Arena and Eel River basins, differ in some respects. The Point Arena basin is more typical of a Monterey basin, with the potential for fractured chert reservoirs and organic-rich sections, deep burial of basinal sections to enhance the generation of higher gravity oils, and complex folding and faulting. The Eel River basin is more clastic-rich in its gas-producing, onshore extension. Key questions in the Eel River basin include whether the offshore, more distal stratigraphy will include Monterey-like biogenic sediments, and whether the basin has oil potential in addition to its proven gas potential. The Outer Santa Cruz basin shares a similar stratigraphy, structure, and hydrocarbon potential with the Point Arena basin. The Santa Cruz-Bodega basin, also with a similar stratigraphy, may have less exploration potential because erosion has thinned the Monterey section in parts of the basin.

Bachman, S.B.; Crouch, J.K.

1988-01-01

211

Marine gravity measurments offshore Sumatra  

NASA Astrophysics Data System (ADS)

Gravimetric measurements were carried out offshore Sumatra and Western Java by BGR during several expeditions with R.V. SONNE in 2005/2006 (cruises SO-186 and SO-189) and 1998/1999 (cruises SO-137 and SO-138). Gravity data were collected along profiles with a total length of nearly 33000 kilometers covering the area between Aceh in the north and the Sunda Strait in the south. The oceanic crust is characterized by slightly positive free-air gravity anomalies resulting from the influence of the subduction bulge due to the downgoing lithosphere. Additionally, there are N-S striking gravity anomalies on the oceanic crust, which can be correlated with a series of transform faults. Landward, an about 50 km wide negative anomaly runs from NW to SE, whereby the gravity values increase from about -160 mGal to about -40 mGal. They reflect the Sunda trench with water depths of 6500 m off the Sunda Strait decreasing to 4000 m off Aceh. This suggests that the thickness of the trench fill with sediments increases considerably from South to North. Landward, the gravity anomalies increase and reach a zone of relative maxima from +60 to +160 mGal in the outer arc high. This zone is about 120 km wide, whereby the outer arc high is less pronounced in the South than in the North. North of 2°N the outer arc high moves very close to the trench, reaching its maximum values already in the slope area. This indicates the recent accretion of large volumes of sediments. Further to the NE an elongated negative anomaly follows with values even lower than the minima associated with the trench. It corresponds to forearc basins filled with light sediments of up to 7 km thickness. Around the equator no basin has been developed. The EW striking gravity high in this area shows an obvious geographical correlation between with high free-air gravity associated with the Investigator Fracture Zone on the oceanic plate to the South. A causal link between the two seems likely. Subduction of the fracture zone is a possible cause for both the change in strike of the trench and forearc north of Nias. This would imply an eastward bend of the N-S trending ridge during the subduction process. Isostatic residual anomalies were calculated and a 3D density model of the subduction zone off Sumatra was developed, using BGR multi-channel seismic and refraction seismic as constraints.

Heyde, I.; Franke, D.; Schnabel, M.

2006-12-01

212

Profiling native kinases by immuno-assisted activity-based profiling.  

PubMed

The protocols in this unit describe efficient and cost-effective approaches to determine the interaction of small-molecule inhibitors with native kinases, and also analyze the interactions between kinases and their binding partners in a cellular setting. The combined attributes of activity-based probes and western blotting procedures provide for quantitative measurement of inhibitor efficacy, isoform selectivity, and post-translational modifications. We further demonstrate the ability to identify protein-protein interactions between a probe-labeled protein and its noncovalent binding partners. PMID:24391084

Okerberg, Eric; Shih, Ann; Brown, Heidi; Alemayehu, Senait; Aban, Arwin; Nomanbhoy, Tyzoon K

2013-01-01

213

Activity-based funding model provides foundation for province-wide best practices in renal care.  

PubMed

British Columbia has a unique funding model for renal care in Canada. Patient care is delivered through six health authorities, while funding is administered by the Provincial Renal Agency using an activity-based funding model. The model allocates funding based on a schedule of costs for every element of renal care, excluding physician fees. Accountability, transparency of allocation and tracking of outcomes are key features that ensure successful implementation. The model supports province-wide best practices and equitable care and fosters innovation. Since its introduction, the outpatient renal services budget has grown less than the population, while maintaining or improving clinical outcomes. PMID:24485244

Levin, Adeera; Lo, Clifford; Noel, Kevin; Djurdjev, Ogjnenka; Amano, Erlyn C

2013-01-01

214

75 FR 23582 - Annular Casing Pressure Management for Offshore Wells  

Federal Register 2010, 2011, 2012, 2013

...develop the industry standard. Offshore Operators Committee (OOC...Casing Pressure Management for Offshore Wells (74 FR 38147, July...annular casing pressure in offshore wells. (4) This final rule...Gas Extraction, and 213111, Drilling Oil and Gas Wells. For...

2010-05-04

215

Extreme Loads for an Offshore Wind Turbine using Statistical  

E-print Network

Extreme Loads for an Offshore Wind Turbine using Statistical Extrapolation from Limited Field Data,itiscommontoeithercarry out extensive simulation studies or undertake a field measurement campaign. At the Blyth offshore wind here is to estimate extreme loads for an offshore wind turbine for which the environmental and load

Manuel, Lance

216

Scour around an offshore wind turbine W.F. Louwersheimer  

E-print Network

Scour around an offshore wind turbine MSc Thesis W.F. Louwersheimer January, 2007 Delft University #12;Scour around an offshore wind turbine Delft University of Technology Ballast Nedam - Egmond iii Scour around an offshore wind turbine W.F. Louwersheimer Student number 1067419 January, 2007

Langendoen, Koen

217

REVIEW Open Access Assessing environmental impacts of offshore wind  

E-print Network

REVIEW Open Access Assessing environmental impacts of offshore wind farms: lessons learned and recommendations for the future Helen Bailey1* , Kate L Brookes2 and Paul M Thompson3 Abstract Offshore wind power literature and our experience with assessing impacts of offshore wind developments on marine mammals

Aberdeen, University of

218

Challenges in Predicting Power Output from Offshore Wind Farms  

E-print Network

Challenges in Predicting Power Output from Offshore Wind Farms R. J. Barthelmie1 and S. C. Pryor2 Abstract: Offshore wind energy is developing rapidly in Europe and the trend is towards large wind farms an offshore wind farm, accurate assessment of the wind resource/power output from the wind farm is a necessity

Pryor, Sara C.

219

Offshore Wind Farm Layout Optimization (OWFLO) Project: Preliminary Results  

E-print Network

Offshore Wind Farm Layout Optimization (OWFLO) Project: Preliminary Results Christopher N. Elkinton the layout of an offshore wind farm presents a significant engineering challenge. Most of the optimization literature to date has focused on land-based wind farms, rather than on offshore farms. Typically, energy

Massachusetts at Amherst, University of

220

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. These wave modeling assumptions do not adequately represent waves in shallow waters where most offshore wind for estimating loads on the support structure (monopile) of an offshore wind turbine. We use a 5MW utility

Manuel, Lance

221

Using satellite data for mapping offshore wind resources and wakes  

E-print Network

Using satellite data for mapping offshore wind resources and wakes Charlotte Bay Hasager, Merete Energy Department, Denmark Copenhagen Offshore Wind, Conference and Exhibition 26-28 October 2005, Copenhagen, Denmark #12;· Offshore winds from satellites · Wind ressource estimation · Wake estimation

222

Quantifying Offshore Wind Resources from Satellite Wind Maps  

E-print Network

Quantifying Offshore Wind Resources from Satellite Wind Maps: Study Area the North Sea C. B National Laboratory, Roskilde, Denmark Offshore wind resources are quantified from satellite synthetic the spatial extent of the wake behind large offshore wind farms. Copyright © 2006 John Wiley & Sons, Ltd

Pryor, Sara C.

223

Ris National Laboratory Satellite SAR applied in offshore wind  

E-print Network

Risø National Laboratory Satellite SAR applied in offshore wind ressource mapping: possibilities is to quantify the regional offshore wind climate for wind energy application based on satellite SAR ·Study of 85SAR(m/s) Hasager, Dellwik, Nielsen and Furevik, 2004, Validation of ERS-2 SAR offshore wind-speed maps

224

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 regional estimate, Kempton et al. (2) calculated that two-thirds of the offshore wind power off the U in the U.S. Atlantic region is already underway. Fig. 1 shows as black squares offshore wind developments

Firestone, Jeremy

225

Assessing Novel Foundation Options for Offshore Wind Turbines  

E-print Network

Assessing Novel Foundation Options for Offshore Wind Turbines B.W. Byrne, BE(Hons), BCom, MA, DPhil G.T. Houlsby, MA, DSc, FREng, FICE Oxford University, UK SYNOPSIS Offshore wind farms, and of these wind power is the only one to be exploited on a commercial scale at present. Three major offshore

Byrne, Byron

226

Boundary Spanning in Offshored Information Systems Development Projects  

ERIC Educational Resources Information Center

Recent growth in offshore outsourcing of information systems (IS) services is accompanied by managing the offshore projects successfully. Much of the project failures can be attributed to geographic and organizational boundaries which create differences in culture, language, work patterns, and decision making processes among the offshore project…

Krishnan, Poornima

2010-01-01

227

Review report 2004 The Danish Offshore Wind Farm  

E-print Network

- 1 - Review report 2004 The Danish Offshore Wind Farm Demonstration Project: Horns Rev and Nysted Offshore Wind Farms Environmental impact assessment and monitoring Prepared for The Environmental Group By Elsam Engineering and ENERGI E2 October 2005 #12;- 2 - Review Report 2004 The Danish Offshore Wind Farm

228

Hydroacoustic Monitoring of Fish Communities in Offshore Wind Farms  

E-print Network

#12;Hydroacoustic Monitoring of Fish Communities in Offshore Wind Farms Annual Report 2004 Horns Rev Offshore Wind Farm Published: May 2005 Prepared by: Christian B. Hvidt Lars Brünner Frank Reier farms Horns Rev Offshore Wind Farm 2004 2519-03-003-rev3.doc TABLE OF CONTENTS PAGE 1. Introduction

229

Ris-R-1407(EN) Efficient Development of Offshore  

E-print Network

, Roskilde April 2003 #12;Abstract Europe has large offshore wind energy potential that is poised energy supply. Offshore wind energy developments are underway in many European countries with planned the impact of thermal flows, roughness and orography on offshore wind speeds. The model hierarchy developed

230

Offshore safety case approach and formal safety assessment of ships  

Microsoft Academic Search

Problem: Tragic marine and offshore accidents have caused serious consequences including loss of lives, loss of property, and damage of the environment. Method: A proactive, risk-based “goal setting” regime is introduced to the marine and offshore industries to increase the level of safety. Discussion: To maximize marine and offshore safety, risks need to be modeled and safety-based decisions need to

J Wang

2002-01-01

231

E2I EPRI Assessment Offshore Wave Energy Conversion Devices  

E-print Network

E2I 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 Assessment - Offshore Wave Energy Conversion Devices Introduction E2I EPRI is leading a U.S. nationwide

232

International Offshore Students' Perceptions of Virtual Office Hours  

ERIC Educational Resources Information Center

Purpose: The main aim of this study is to gauge international offshore students' perceptions of virtual office hours (VOH) to consult with their offshore unit coordinators in Australia. Design/methodology/approach: This paper employs a quantitative and qualitative approach where data was sourced from three offshore campuses over a 12-month period…

Wdowik, Steven; Michael, Kathy

2013-01-01

233

Quantitative CMMI Assessment for Offshoring through the Analysis of Project Management Repositories  

NASA Astrophysics Data System (ADS)

The nature of distributed teams and the existence of multiple sites in offshore software development projects pose a challenging setting for software process improvement. Often, the improvement and appraisal of software processes is achieved through a turnkey solution where best practices are imposed or transferred from a company’s headquarters to its offshore units. In so doing, successful project health checks and monitoring for quality on software processes requires strong project management skills, well-built onshore-offshore coordination, and often needs regular onsite visits by software process improvement consultants from the headquarters’ team. This paper focuses on software process improvement as guided by the Capability Maturity Model Integration (CMMI) and proposes a model to evaluate the status of such improvement efforts in the context of distributed multi-site projects without some of this overhead. The paper discusses the application of quantitative CMMI assessment through the collection and analysis of project data gathered directly from project repositories to facilitate CMMI implementation and reduce the cost of such implementation for offshore-outsourced software development projects. We exemplify this approach to quantitative CMMI assessment through the analysis of project management data and discuss the future directions of this work in progress.

Sunetnanta, Thanwadee; Nobprapai, Ni-On; Gotel, Olly

234

Activity-Based Protein Profiling of Protein Tyrosine Phosphatases  

PubMed Central

Summary The ability to accurately monitor the dynamics involved with the activity and state of a specific protein population in a complex biological system represents one of the major technological challenges in studying systems biology. Over the past several years a number of groups have attempted to spearhead this new frontier of systems biology by developing enzyme family-specific activity-based chemical probes linked to appropriate reporter groups that by nature only target and subsequently tag the active form of these enzymes. In this work, we will highlight the methods used to characterize activity-based probes as to their utility in biological contexts. Specifically, we will address activity-based protein profiling of the protein tyrosine phosphatases, a highly conserved enzyme family responsible for the phospho-tyrosine hydrolysis reaction, a ubiquitous reaction that is absolutely essential to the regulation of a myriad of cellular processes. PMID:19381599

Walls, Chad; Zhou, Bo; Zhang, Zhong-Yin

2009-01-01

235

Large enigmatic crater structures offshore southern California  

Microsoft Academic Search

Digital mosaics of swath and conventional bathymetry data reveal large, distinct near-circular crater structures in the Inner Continental Borderland offshore southern California. Two have maximum crater diameters that exceed 30 km and a third has a crater diameter of approximately 12 km. All three features exhibit the morphology of large complex craters (raised outer rim, ring moat and central uplift)

Mark R. Legg; Craig Nicholson; Chris Goldfinger; Randall Milstein; Marc J. Kamerling

2004-01-01

236

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

237

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

238

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

239

Sea loads on ships and offshore structures  

Microsoft Academic Search

The book introduces the theory of the structural loading on ships and offshore structures caused by wind, waves and currents, and goes on to describe the applications of this theory in terms of real structures. The main topics described are linear-wave induced motions, loads on floating structures, numerical methods for ascertaining wave induced motions and loads, viscous wave loads and

O. M. Faltinsen

1990-01-01

240

Are Offshoring and Immigration Substitutes for Canada?  

Microsoft Academic Search

SUMMARY NDUSTRY CANADA ORIGINALLY PROPOSED the question in the title as the basis for a research paper. Because of the lack of data suitable for framing and testing a quantitative model, the resulting paper instead provides some tentative estimates of the relative sizes of immigration and offshoring in the Canadian context, specifically in the context of skilled services. Very approximate

John F. Helliwell

241

High-Alloy Materials for Offshore Applications  

Microsoft Academic Search

High-alloy materials possessing good corrosion resistance in hot, sour brines are being seriously considered for offshore applications. These alloys are available in a wide range of strength levels which can be attained by the methods of cold working or precipitation hardening. Results of testing INCONEL alloys 625 and 718 and INCOLOY alloys 825 and 925 for resistance to general corrosion,

T. F. Lemke; J. A. Harris

1983-01-01

242

Distributed computer control for an offshore platform  

Microsoft Academic Search

Mobil Exploration Norway Inc.'s Condeep offshore platform Statfjord A, in the North Sea, which has facilities for drilling, production, crude oil storage, gas compression, and custody-transfer to tankers through an articulated loading platform, as well as a 60 Mw electrical generator and distribution system, is fully instrumented via a Supervisory Control and Data Acquisition (SCADA) system. The SCADA system is

1978-01-01

243

Assessing offshore wind resources: An accessible methodology  

Microsoft Academic Search

This paper describes a method for assessing the electric production and value of wind resources, specifically for the offshore environment. Three steps constitute our method. First, we map the available area, delimiting bathymetric areas based on turbine tower technology, then assess competing uses of the ocean to establish exclusion zones. From exclusion zones, bathymetry, and turbine tower water depth limitations,

Amardeep Dhanju; Phillip Whitaker; Willett Kempton

2008-01-01

244

Assessing offshore wind resources: An accessible methodology  

Microsoft Academic Search

This paper describes a method for assessing the electric production and value of wind resources, specifically for the offshore environment. Three steps constitute our method. First, we map the available area, delimiting bathymetric areas based on turbine tower technology, then assess competing uses of the ocean to establish exclusion zones. From exclusion zones, bathymetry, and turbine tower water depth limitations,

Amardeep Dhanju; Phillip Whitaker; Willett Kempton

2007-01-01

245

Marine Fisheries On the cover: Offshore  

E-print Network

Marine Fisheries ~~WD~W On the cover: Offshore charter boats at Islamorada, Fla. See the article Fish Technology and Marine Pollution 32 u.s. DEPARTMENT OF COMMERCE Malcolm Baldrige, Secretary NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION John V. Byrne, Administrator National Marine Fisheries

246

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...

247

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....

248

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...

249

Supplier selection using activity-based costing and fuzzy present-worth techniques  

Microsoft Academic Search

The relationship between a supplier and a purchaser is one of the most essential issues for viability of both sides. The well-built relationship is especially related to the healthy selection of suppliers. The changing customer preferences also make this selection process important. Many different selection approaches have been published in the purchasing literature. In these studies, the working conditions of

Ibrahim Dogan; Ugur Sahin

2003-01-01

250

Activity-Based Costing Models for Alternative Modes of Delivering On-Line Courses  

ERIC Educational Resources Information Center

In recent years there has been growth in online distance learning courses. This has been prompted by; new technology such as the Internet, mobile learning, video and audio conferencing: the explosion in student numbers in Higher Education, and the need for outreach to a world wide market. Web-based distance learning is seen as a solution to…

Garbett, Chris

2011-01-01

251

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

252

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

253

Recent developments in welding consumables for offshore structures  

SciTech Connect

The submerged arc, manual metal arc and flux cored arc welding processes are used extensively in the fabrication of fixed offshore oil and gas production platforms. The development of submerged arc wire and flux combinations for the high deposition rate welding of both conventional and higher strength steels is described. In order to optimize the weld metal mechanical properties an investigation has been undertaken into the effect of nitrogen on the tensile and toughness properties. Welds have been deposited using wires with varying levels of nitrogen. The influence of nitrogen on the weld metal tensile, impact toughness and CTOD toughness properties has been examined together with its effect on the weld deposit microstructure. The implications of these results for commercial consumables have been assessed. The requirement to reduce the weight and cost of offshore structures has led to the increasing use of higher strength steels. The development of submerged arc wire and flux combinations for higher strength steels is described together with the tensile and toughness properties of the deposited welds. Manual metal arc electrodes and flux cored wires are both widely used in many applications. Weld metal alloy systems for manual metal arc electrodes have been investigated to produce weldments exhibiting both higher levels of strength together with retaining good low temperature impact toughness properties. The influence of these alloying elements on the resultant weld deposit strength and toughness properties is described. For manual metal arc electrodes raw materials and manufacturing conditions play a significant role in influencing the resultant weld deposit hydrogen content. The development of a packaging system which enables basic electrodes to be used without the need for onsite baking is described, together with its successful adoption on fabrication sites.

Thornton, C.E. [Oerlikon Welding Ltd., Glossop (United Kingdom)

1994-12-31

254

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

255

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

256

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

257

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

258

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

259

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

260

Automatic welding comes of age. [Offshore  

Microsoft Academic Search

Automatic pipe welding systems today fall into three main categories: gas metal arc welding, gas-tungsten arc welding, and flash-butt welding. The first automatic welding devices used offshore were the CRC and H.C. Price systems. Both use gas metal arc welding with a consumable steel filler wire. The recently developed McDermott flash-butt welding system is described. (DLC)

D. L. Jr

1981-01-01

261

Protective riser-conductor for offshore structures  

SciTech Connect

A protective sleeve for fitting about the periphery of the leg of an offshore structure. The sleeve comprises means for carrying and enclosing a plurality of conductors. It further includes one or more inner rings; an outer jacket is fixedly spaced from the rings to define longitudinal passages within which the respective conductors are fixedly positioned. The sleeve is capable of deflecting packed ice and floating objects which represent possible sources of damage to the structure or to conductors.

Rutherford, D. A.; Albers, G. P.

1985-07-09

262

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

263

Offshore Essaouira basin: Geology and hydrocarbon potential  

SciTech Connect

The study area lies in the offshore extension of the onshore Essaouria basin. The Mesozoic development of the Essaouira margin was largely controlled by Late Triassic to Mid-Jurassic rifting and subsequent opening of the Central Atlantic, with the evolution of a typical passive, opening of the Central Atlantic, with the evolution of a typical passive, continental margin. Diapiric salt structure recognized on seismic defines a Late Triassic-Early Jurassic salt basin in the offshore area initiated during early rifting. Subsidence and sea-level rise during Jurassic resulted in carbonate platform development. This was followed during Cretaceous and Tertiary time by the deposition of a prograding siliciclastic system. Only three wells have been drilled in this basin. Although drilled on poorly defined prospects, these wells encountered gas and oil shows. Fairly extensive seismic coverage of good quality data is now available. A study based on an integrated approach involving seismic facies definition and mapping, correlation with well data, identification of the principal control on sedimentation, and basin modeling in conjunction with source rock prediction and maturity modeling has been carried out. Results have shown that hydrocarbon potential in the offshore Essaouira basin has not yet been substantiated by drilling. Attractive structural and stratigraphic prospects exist in the shelf, shelf edge, and the slope, and await confirmation by drilling.

Jabour, H.; Ait Salem, A. (ONAREP, Rabat (Morocco))

1991-03-01

264

Caisson shield for arctic offshore production platform  

SciTech Connect

A caisson shield for the protection of an offshore production platform and, more particularly, a caisson shield for use in an arctic environment for the protection of the offshore structure in iceberg-infested waters which is capable of absorbing the destructive forces of an impact produced by a large iceberg. The caisson shield consists of an essentially annular concrete structure encircling at least the submerged support section of the offshore production platform including vertically upstanding concentrically spaced, annular side walls, a horizontal slab base resting on the marine bottom on which the side walls are supported, and a slab top supported on the side walls, and including annularly spaced internal radial partition walls whereby the entire overall caisson shield structure provides a generally toroidal configuration incorporating a plurality of closed compartments. In one embodiment of the invention, located along the outer annular wall is a plurality of arcuate wall sections forming a series of arches and enclosed compartments between each arcuate wall section and the outer annular wall, which impart a ''scallop-like'' configuration to the outer circumference of the caisson shield. The ''scallop-like'' outer walls are capable of resisting and absorbing extremely high ice loads by being adapted to progressively crush the leading edge of an impacting iceberg and to thereby minimize the crush of the iceberg against the caisson shield before coming to rest against the shield.

Clinton, J. D.; Reusswig, G. H.

1985-03-12

265

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

266

Activity-based proteomic and metabolomic approaches for understanding metabolism.  

PubMed

There are an increasing number of human pathologies that have been associated with altered metabolism, including obesity, diabetes, atherosclerosis, cancer, and neurodegenerative diseases. Most attention on metabolism has been focused on well-understood metabolic pathways and has largely ignored most of the biochemical pathways that operate in (patho)physiological settings, in part because of the vast landscape of uncharacterized and undiscovered metabolic pathways. One technology that has arisen to meet this challenge is activity-based protein profiling (ABPP) that uses activity-based chemical probes to broadly assess the functional states of both characterized and uncharacterized enzymes. This review will focus on how ABPP, coupled with inhibitor discovery platforms and functional metabolomic technologies, have led to discoveries that have expanded our knowledge of metabolism in health and disease. PMID:24594637

Hunerdosse, Devon; Nomura, Daniel K

2014-08-01

267

How Much Does Instruction and Research Really Cost?  

ERIC Educational Resources Information Center

Describes an institution-wide activity-based costing study conducted at a large, urban, public university. The program cost study provides campus-, school-, and department-level cost information for the full range of mission-critical activities in teaching, research, and service. It also includes allocation of all levels of overhead to…

Rooney, Patrick M.; Borden, Victor M. H.; Thomas, Timothy J.

1999-01-01

268

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

269

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

270

Horns Rev Offshore Wind Farm Environmental Impact Assessment  

E-print Network

Horns Rev Offshore Wind Farm Environmental Impact Assessment of Sea Bottom and Marine Biology #12 Design ApS 01.03.2000 #12;Bio/consult A/S Horns Rev. Offshore Wind Farm Doc. No. 1680-1-02-03-003 rev. 1........................................................................................................................................................... 36 #12;Bio/consult A/S ELSAM Horns Rev. Offshore Wind Farm Doc. No. 1680-1-02-03-003 rev. 1 Page 4

271

The submerged offshore breakwater and its effects on seafloor topography  

E-print Network

/B for the emergent offshore breakwater. It has been postulated that tombolo formation cannot occur in the case of the submerged offshore breakwater. However, the spit-growth/relative d1stance from shore relationship is expected to be similar. The beach...THE SUBMERGED OFFSHORE BREAKWATER AND ITS EFFECTS ON SEAFLOOR TOPOGRAPHY A Thesis by JAMES RUSSELL TALLENT Submitted to the Graduate College of Texas AGM University in partial fulfillment of the requirements for the degree of MASTER...

Tallent, James Russell

2012-06-07

272

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

273

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

274

The outsourcing and offshoring competitive landscape and its uncertainties  

E-print Network

The outsourcing and offshoring competitive landscape is rapidly and constantly evolving, presenting new challenges and opportunities for providers and customers alike. Outsourcing providers are pressured to increase the ...

Sultan, Ziad R. (Ziad Raymond)

2005-01-01

275

Integral sliding mode control for offshore steel jacket platforms  

NASA Astrophysics Data System (ADS)

This paper is concerned with robust integral sliding mode control for an offshore steel jacket platforms subject to nonlinear wave-induced force and parameter perturbations. A robust integral sliding mode controller is designed to stabilize the dynamic model of the offshore steel jacket platform. It is shown through simulation results that the robust integral sliding mode control scheme can reduce the internal oscillations of the offshore steel jacket platform dramatically; and the performance of the offshore steel jacket platform under the robust integral sliding mode control scheme is better than the ones under the nonlinear control scheme and the dynamic output feedback control scheme.

Zhang, Bao-Lin; Han, Qing-Long; Zhang, Xian-Ming; Yu, Xinghuo

2012-07-01

276

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

277

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

278

Apparel sourcing: assessing the true operational cost  

Microsoft Academic Search

In a earlier debate, it was suggested that for many reasons, the decision by a retailer to source low-cost clothing offshore from low-wage suppliers may be ill-advised. We were able to show that using lower priced textiles and apparel manufactured by foreign sources could be sub-optimal operations strategy. In numerous cases, those relying upon this form of procurement failed to

Robert H. Lowson

2003-01-01

279

75 FR 60097 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013

...Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department of Energy...Deepwater Horizon Oil Spill and Offshore Drilling (the Commission). The Commission...any oil spills associated with offshore drilling in the future. The...

2010-09-29

280

46 CFR 11.468 - Officer endorsements for mobile offshore drilling units.  

Code of Federal Regulations, 2012 CFR

...Officer endorsements for mobile offshore drilling units. 11.468 Section...Officer endorsements for mobile offshore drilling units. Officer endorsements for service on mobile offshore drilling units (MODUs)...

2012-10-01

281

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

Code of Federal Regulations, 2013 CFR

...Countermeasure Plan requirements for offshore oil drilling, production, or workover...Countermeasure Plan requirements for offshore oil drilling, production, or workover...the owner or operator of an offshore oil drilling, production, or...

2013-07-01

282

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

Code of Federal Regulations, 2011 CFR

...Countermeasure Plan requirements for offshore oil drilling, production, or workover...Countermeasure Plan requirements for offshore oil drilling, production, or workover...the owner or operator of an offshore oil drilling, production, or...

2011-07-01

283

77 FR 71607 - Mobile Offshore Drilling Unit (MODU) Electrical Equipment Certification Guidance  

Federal Register 2010, 2011, 2012, 2013

...USCG-2012-0839] Mobile Offshore Drilling Unit (MODU) Electrical Equipment...on foreign-flagged Mobile Offshore Drilling Units (MODUs) that have never...Construction and Equipment of Mobile Offshore Drilling Units (2009 IMO MODU...

2012-12-03

284

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

...Countermeasure Plan requirements for offshore oil drilling, production, or workover...Countermeasure Plan requirements for offshore oil drilling, production, or workover...the owner or operator of an offshore oil drilling, production, or...

2014-07-01

285

75 FR 65309 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013

...Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department of Energy...Deepwater Horizon Oil Spill and Offshore Drilling (the Commission). The Commission...any oil spills associated with offshore drilling in the future. The...

2010-10-22

286

76 FR 39885 - Risk-Based Targeting of Foreign Flagged Mobile Offshore Drilling Units (MODUs)  

Federal Register 2010, 2011, 2012, 2013

...Targeting of Foreign Flagged Mobile Offshore Drilling Units (MODUs) AGENCY: Coast...Targeting of Foreign Flagged Mobile Offshore Drilling Units (MODUs). This policy...every foreign-flagged mobile offshore drilling unit (MODU) must undergo...

2011-07-07

287

75 FR 69652 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013

...Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department of Energy...Deepwater Horizon Oil Spill and Offshore Drilling (the Commission). The Commission...any oil spills associated with offshore drilling in the future. The...

2010-11-15

288

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

Code of Federal Regulations, 2012 CFR

...Countermeasure Plan requirements for offshore oil drilling, production, or workover...Countermeasure Plan requirements for offshore oil drilling, production, or workover...the owner or operator of an offshore oil drilling, production, or...

2012-07-01

289

46 CFR 2.10-130 - Fees for examination of foreign mobile offshore drilling units.  

...Fees for examination of foreign mobile offshore drilling units. 2.10-130 Section 2...Fees for examination of foreign mobile offshore drilling units. Each foreign mobile offshore drilling unit must pay: (a) For...

2014-10-01

290

46 CFR 11.468 - Officer endorsements for mobile offshore drilling units.  

Code of Federal Regulations, 2013 CFR

...Officer endorsements for mobile offshore drilling units. 11.468 Section...Officer endorsements for mobile offshore drilling units. Officer endorsements for service on mobile offshore drilling units (MODUs)...

2013-10-01

291

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

Federal Register 2010, 2011, 2012, 2013

...Deepwater Horizon Oil Spill and Offshore Drilling By the authority vested in me...Deepwater Horizon Oil Spill and Offshore Drilling (the ``Commission...oil spills associated with offshore drilling, taking into...

2010-05-26

292

46 CFR 2.10-130 - Fees for examination of foreign mobile offshore drilling units.  

Code of Federal Regulations, 2013 CFR

...Fees for examination of foreign mobile offshore drilling units. 2.10-130 Section 2...Fees for examination of foreign mobile offshore drilling units. Each foreign mobile offshore drilling unit must pay: (a) For...

2013-10-01

293

46 CFR 2.10-130 - Fees for examination of foreign mobile offshore drilling units.  

Code of Federal Regulations, 2010 CFR

...Fees for examination of foreign mobile offshore drilling units. 2.10-130 Section 2...Fees for examination of foreign mobile offshore drilling units. Each foreign mobile offshore drilling unit must pay: (a) For...

2010-10-01

294

46 CFR 2.10-130 - Fees for examination of foreign mobile offshore drilling units.  

Code of Federal Regulations, 2012 CFR

...Fees for examination of foreign mobile offshore drilling units. 2.10-130 Section 2...Fees for examination of foreign mobile offshore drilling units. Each foreign mobile offshore drilling unit must pay: (a) For...

2012-10-01

295

33 CFR 147.T08-849 - DEEPWATER HORIZON Mobile Offshore Drilling Unit Safety Zone.  

Code of Federal Regulations, 2010 CFR

...false DEEPWATER HORIZON Mobile Offshore Drilling Unit Safety Zone. 147.T08-849...T08-849 DEEPWATER HORIZON Mobile Offshore Drilling Unit Safety Zone. (a) Location...DEEPWATER HORIZON, a Mobile Offshore Drilling Unit (MODU), that...

2010-07-01

296

76 FR 78938 - Carpinteria Offshore Field Redevelopment Project-Developmental Drilling Into the Carpinteria...  

Federal Register 2010, 2011, 2012, 2013

...Management Carpinteria Offshore Field Redevelopment...Developmental Drilling Into the Carpinteria Offshore Field Oil and Gas...Description of the Area Drilling will take place from...Channel, 3.7 miles offshore of the City of...

2011-12-20

297

75 FR 47584 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013

...Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department of Energy...Deepwater Horizon Oil Spill and Offshore Drilling (the Commission). The Commission...any oil spills associated with offshore drilling in the future. The...

2010-08-06

298

75 FR 56526 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling  

Federal Register 2010, 2011, 2012, 2013

...Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department of Energy...Deepwater Horizon Oil Spill and Offshore Drilling (the Commission). The Commission...any oil spills associated with offshore drilling in the future. The...

2010-09-16

299

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

Code of Federal Regulations, 2010 CFR

...Countermeasure Plan requirements for offshore oil drilling, production, or workover...Countermeasure Plan requirements for offshore oil drilling, production, or workover...the owner or operator of an offshore oil drilling, production, or...

2010-07-01

300

46 CFR 2.10-130 - Fees for examination of foreign mobile offshore drilling units.  

Code of Federal Regulations, 2011 CFR

...Fees for examination of foreign mobile offshore drilling units. 2.10-130 Section 2...Fees for examination of foreign mobile offshore drilling units. Each foreign mobile offshore drilling unit must pay: (a) For...

2011-10-01

301

46 CFR 11.468 - Officer endorsements for mobile offshore drilling units.  

Code of Federal Regulations, 2011 CFR

...Officer endorsements for mobile offshore drilling units. 11.468 Section...Officer endorsements for mobile offshore drilling units. Officer endorsements for service on mobile offshore drilling units (MODUs)...

2011-10-01

302

46 CFR 11.468 - Officer endorsements for mobile offshore drilling units.  

Code of Federal Regulations, 2010 CFR

...Officer endorsements for mobile offshore drilling units. 11.468 Section...Officer endorsements for mobile offshore drilling units. Officer endorsements for service on mobile offshore drilling units (MODUs)...

2010-10-01

303

UNDERLYING MOTIVATIONS FOR DELAWARE PUBLIC PARTICIPATION IN SUPPORT OF OFFSHORE WIND  

E-print Network

UNDERLYING MOTIVATIONS FOR DELAWARE PUBLIC PARTICIPATION IN SUPPORT OF OFFSHORE WIND: IMPLICATIONS PARTICIPATION IN SUPPORT OF OFFSHORE WIND: IMPLICATIONS FOR STATE ENERGY POLICY by Jacqueline D Piero Approved ................................................................................................. 3 Offshore wind: a new option in the United States.............................................. 4

Firestone, Jeremy

304

78 FR 16529 - Notice of Determination of No Competitive Interest, Offshore Virginia  

Federal Register 2010, 2011, 2012, 2013

...of No Competitive Interest, Offshore Virginia AGENCY: Bureau of...Shelf (OCS) Research Lease Offshore Virginia...the Outer Continental Shelf Offshore Virginia, that BOEM published...to acquire an OCS lease for wind energy research...

2013-03-15

305

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

Federal Register 2010, 2011, 2012, 2013

...Interest (RFI) in Commercial Wind Energy Leasing Offshore Massachusetts...period on the RFI in Commercial Wind Energy Leasing Offshore Massachusetts...Register the RFI in Commercial Wind Energy Leasing Offshore...

2011-03-17

306

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

... 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

307

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

308

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

309

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

Code of Federal Regulations, 2010 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...

2010-07-01

310

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

311

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

312

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

313

Enzyme inhibitor discovery by activity-based protein profiling.  

PubMed

Eukaryotic and prokaryotic organisms possess huge numbers of uncharacterized enzymes. Selective inhibitors offer powerful probes for assigning functions to enzymes in native biological systems. Here, we discuss how the chemical proteomic platform activity-based protein profiling (ABPP) can be implemented to discover selective and in vivo-active inhibitors for enzymes. We further describe how these inhibitors have been used to delineate the biochemical and cellular functions of enzymes, leading to the discovery of metabolic and signaling pathways that make important contributions to human physiology and disease. These studies demonstrate the value of selective chemical probes as drivers of biological inquiry. PMID:24905785

Niphakis, Micah J; Cravatt, Benjamin F

2014-01-01

314

Motion performance and mooring system of a floating offshore wind turbine  

NASA Astrophysics Data System (ADS)

The development of offshore wind farms was originally carried out in shallow water areas with fixed (seabed mounted) structures. However, countries with limited shallow water areas require innovative floating platforms to deploy wind turbines offshore in order to harness wind energy to generate electricity in deep seas. The performances of motion and mooring system dynamics are vital to designing a cost effective and durable floating platform. This paper describes a numerical model to simulate dynamic behavior of a new semi-submersible type floating offshore wind turbine (FOWT) system. The wind turbine was modeled as a wind block with a certain thrust coefficient, and the hydrodynamics and mooring system dynamics of the platform were calculated by SESAM software. The effect of change in environmental conditions on the dynamic response of the system under wave and wind loading was examined. The results indicate that the semi-submersible concept has excellent performance and SESAM could be an effective tool for floating wind turbine design and analysis.

Zhao, Jing; Zhang, Liang; Wu, Haitao

2012-09-01

315

Offshore single point mooring systems for import of hazardous liquid cargoes  

SciTech Connect

The goal of this project was the determination of feasibility of single point mooring systems (SPMS) for use as deepwater ports for the import of hazardous liquid cargoes offshore southern California. The use of deepwater ports is advocated because it has been determined by the U.S. Coast Guard that they represent the least risky form of crude oil import, lessening the likelihood of occurrence and environmental impact severity of accidents. Two configurations of SPMS were examined as deepwater ports in this project: catenary anchor leg mooring (CALM) and single anchor leg mooring (SALM). Two sites for these systems were chosen offshore southern California by the California State Lands commission: El Segundo and Morro Bay. The project examined the environmental conditions at both sites, developed analytical models with which to evaluate the suitability of SPMS to these environmental conditions, determined the reliability of the systems by use of state-of-the-art reliability methods, and evaluated the feasibility of the systems by comparing reliability to system costs. The results of this project indicate that SPMS for offshore southern California conditions are feasible and do not require major technological developments to allow such systems to be designed, constructed, and operated. Use of these systems should lower the number of accidents due to hazardous liquid cargo import, as well as reduce the impact of those accidents which do occur.

Salancy, A.M.; Bea, R.G.

1994-09-01

316

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

317

Review of Methodologies for Offshore Wind Resource Assessment in European Seas  

NASA Astrophysics Data System (ADS)

The wind resource offshore is generally larger than at geographically nearby onshore sites, which can offset the higher installation, operation and maintenance costs associated with offshore wind parks. Successful offshore wind energy development relies to 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. Accordingly, one can conceptualize the wind resource assessment process as a two-phase activity: ( i) an evaluation of wind resources at the regional scale to locate promising wind farm sites and ( ii) a site specific evaluation of wind climatology and vertical profiles of wind and atmospheric turbulence, in addition to an assessment of historical and possibly future changes due to climate non-stationarity. Phase ( i) of the process can involve use of in situ observations of opportunity derived from ships, lighthouses and buoys in conjunction with model tools and remote sensing products. The reliability of such data sources has been extensively investigated in different national and European projects especially in Northern Europe, and the results are summarized herein. Phase ( ii) of the project often still requires in situ observations (which may or may not be supplemented with ground-based remote sensing technologies) and application of tools to provide a climatological context for the resulting measurements. Current methodologies for undertaking these aspects of the resource assessment are reviewed.

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

2008-12-01

318

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

319

High-alloy materials for offshore applications  

SciTech Connect

High-alloy materials possessing good corrosion resistance in hot, sour brines are being seriously considered for offshore applications. These alloys are available in a wide range of strength levels which can be attained by the methods of cold working or precipitation hardening. Results of testing INCONEL alloys 625 and 718 and INCOLOY alloys 825 and 925 for resistance to general corrosion, hydrogen embrittlement, and stress-corrosion cracking (SCC) are presented. This paper also contrasts the range of mechanical properties available in precipitation-hardened materials with properties of cold-worked alloys.

Lemke, T.F.; Harris, J.A.

1983-05-01

320

Endowments of undiscovered conventionally recoverable and economically recoverable oil and gas in the Alaska federal offshore as of January 1995. Final report  

SciTech Connect

The report summarizes the Minerals Management Service assessment of the quantities of undiscovered oil and gas that lie beneath submerged Federal lands offshore of Alaska. Resource estimates include both the geologic endowment, consisting of conventionally recoverable resources unconstrained by economics, as well as the more modest quantities of oil and gas that can be recovered profitably, considering the costs associated with producing the resource.

Sherwood, K.W.; Craig, J.D.; Cooke, L.W.

1996-05-01

321

Proceedings of the nineteenth annual offshore technology conference. Vol. 3  

SciTech Connect

This book presents the papers given at a conference on offshore platforms. Topics considered at the conference included grouted pile-sleeve connections, tanker ships, mooring systems, offshore drilling, drill pipes, subsea control valves, thermal insulation coatings, submarine pipeline stability, computerized simulation, hydrodynamics, pipe-soil interactions, wellhead performance, marine risers, directional drilling, vibration monitoring, welding, economics, tension leg platforms, and storage facilities.

Not Available

1987-01-01

322

Advances in offshore oil and gas pipeline technology  

SciTech Connect

This book examines the problems involved in the offshore transport of petroleum and natural gas. Topics considered include geotechnical considerations, pipeline lay-stress analysis, pipeline reeling, buckling, pipeline trenching by ploughing, the automated connection of offshore pipelines, concrete coatings, cathodic protection, spanning problems, inspection, emergency repair, safety, reliability, pressure effects, marine risers, and single point mooring systems.

delaMare, R.F.

1985-01-01

323

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.

324

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

325

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

326

COMPOSITES & NANOCOMPOSITES in CIVIL, OFFSHORE and MINING INFRASTRUCTURE  

E-print Network

ACUN-6 COMPOSITES & NANOCOMPOSITES in CIVIL, OFFSHORE and MINING INFRASTRUCTURE 14­16November2012 Lunch, Tea and Drinks Western Foyer #12;ACUN6 ­ Composites and Nanocomposites in Civil, Offshore Director of ARC Centre of Excellence of Non-Ferrous Metals, UNSW 9:50 ­ 10:00 Prof. Sami Rizkalla

327

Improvement of Offshore Wind Resource Modeling in the Mid-  

E-print Network

Improvement of Offshore Wind Resource Modeling in the Mid- Atlantic Bight Wind Energy Symposium Sienkiewicz , Chris Hughes 26 February 2013 #12;Improving Atmospheric Models for Offshore Wind Resource Interaction Tower ­ 23 m NOAA Buzzard's Bay Tower ­ 25 m Cape Wind Tower (60 m from 2003-2011; just platform

Firestone, Jeremy

328

RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT)  

E-print Network

RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT) Yizhou Lu, T. M. Delorm, A. Christou of survivor functions R(t) of drive-trains, after 1 year of operation, between Offshore Wind Turbine (OWT) vs of the reliability of these 5 Types Surrogate failure rate data Onshore wind turbines (OT) 1-1.5MW CONCLUSIONS

Bernstein, Joseph B.

329

Expansion analysis of offshore pipelines close to restraints  

SciTech Connect

A comprehensive review of offshore pipeline expansion due to thermal and pressure change is presented. An iterative method is introduced to model the interaction of off-shore pipeline expansion and restraining forces at the end of the pipeline. The effects of thermal gradients and restraining forces are studied to provide accurate pipeline design criteria. Numerical calculations are performed for various sizes of pipes.

Choi, H.S. [Hudson Engineering Corp., Houston, TX (United States)

1995-12-31

330

Aspects of Relevance in Offshore Wind Farm Reliability Assessment  

Microsoft Academic Search

The worldwide increase of installed wind power capacity demands the inclusion of wind farm (WF) models into power system reliability assessment. This paper looks at this issue from available literature, and presents a list of factors that highly influence offshore WF generation. An example of sequential Monte Carlo simulation applied to an offshore WF is described using a new synthetic

Nicola Barberis Negra; O. Holmstrom; Birgitte Bak-Jensen; Poul Sorensen

2007-01-01

331

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

332

Hydraulics in oil drilling from offshore mobile platforms  

Microsoft Academic Search

Because of the requirement for rapid operation of subsea safety equipment when drilling from offshore mobile platforms, special hydraulic equipment is required. This paper discusses the features of hydraulic control systems used for operation of subsea blowout preventer equipment from offshore floating drilling rigs. Special features of the hydraulic equipment are discussed along with specific requirements which influence component designs

1982-01-01

333

Ris-R-1298(EN) Validation of Satellite SAR Offshore  

E-print Network

.4 Acknowledgements 10 2 Offshore wind energy 10 2.1 Socio-economic context 10 2.2 Wind energy resources 11 2.3 Offshore wind resources 12 2.4 Wind energy resources in the coastal zone 13 2.5 The need for remote sensing impact on wind speed distributions of sam

334

Anchoring systems for marine renewable energies offshore platforms  

Microsoft Academic Search

At present no specific methodologies have been developed for the design of the anchoring systems of offshore moored platforms, individual and in farm configuration, for obtaining renewable energy. This paper presents a R&D project whose objective is to cover this lack of knowledge. The scope of the project involves several areas of scientific expertise such as Soil Mechanics, Hydrodynamics, Offshore

R. Rodriguez; I. Gorrochategui; C. Vidal; R. Guanche; J. Canizal; J. A. Fraguela; V. Diaz

2011-01-01

335

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

336

Offshore Heavy Oil in Campos Basin: The Petrobras Experience  

Microsoft Academic Search

This paper was selected for presentation by an OTC Program Committee following review of information contained in an abstract submitted by the author(s). Contents of the paper, as presented, have not been reviewed by the Offshore Technology Conference and are subject to correction by the author(s). The material, as presented, does not necessarily reflect any position of the Offshore Technology

A. C. Capeleiro Pinto; C. C. M. Branco; J. S. de Matos; P. M. Vieira; S. da Silva Guedes; C. Pedroso Jr; A. C. Decnop Coelho; M. M. Ceciliano

2003-01-01

337

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

338

Current developments in activity-based protein profiling.  

PubMed

Activity-based protein profiling (ABPP) has emerged as a powerful strategy to study the activity of enzymes in complex proteomes. The aim of ABPP is to selectively visualize only the active forms of particular enzymes using chemical probes termed activity-based probes (ABPs). These probes are directed to the active site of a particular target protein (or protein family) where they react in a mechanism-based manner with an active site residue. This results in the selective labeling of only the catalytically active form of the enzyme, usually in a covalent manner. Besides the monitoring of a specific enzymatic activity, ABPP strategies have also been used to identify and characterize (unknown) protein functions, to study up- and down-regulation of enzymatic activity in various disease states, to discover and evaluate putative new enzyme inhibitors, and to identify the protein targets of covalently binding natural products. In this Topical Review we will provide a brief overview of some of the recent developments in the field of ABPP. PMID:24946272

Willems, Lianne I; Overkleeft, Herman S; van Kasteren, Sander I

2014-07-16

339

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

340

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

341

Cost goals  

NASA Technical Reports Server (NTRS)

Cost goal activities for the point focusing parabolic dish program are reported. Cost goals involve three tasks: (1) determination of the value of the dish systems to potential users; (2) the cost targets of the dish system are set out; (3) the value side and cost side are integrated to provide information concerning the potential size of the market for parabolic dishes. The latter two activities are emphasized.

Hoag, J.

1981-01-01

342

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

343

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

344

The sea bottom temperature offshore southwestern Taiwan  

NASA Astrophysics Data System (ADS)

The sea bottom temperature (SBT) is important to apply to the heat flow estimation by BSR. Also the SBT may response the fluid migration near subsurface. Here we present 150 measurements of SBT offshore southwestern Taiwan where abundant gas hydrates has been evaluated. The SBT data were acquired by the heat probe with high resolution up to 0.0001°C. Thermal gradients were determined from several temperature sensors installed in different depth in the heat probe and then the SBT could be calculated by extrapolation. The results show that the SBT are between 2.23 and 10.14°C in water depth within the range of 409 to 3248 meters. Basically, the SBT is inversely hyperbolic proportional to the water depth for those 132 measurements the water depth are shallower than 2650 meters. The product of SBT and water depth has an average of 4419 m-°C and a standard deviation of 402 m-°C. However the SBT of others 18 measurements in the deep water region are scattered without any significant trend. Some measurements near mud diapirs in the shallow water have high anomaly SBT. It is suggested that the fluid from deep underground may migrate along the fractures or faults related to the movements of the mud volume.; The sea bottom temperature offshore southwestern Taiwan

Chiang, H.; Shyu, C.; Peng, Y.; Chang, H.; Chen, S.; Chung, S.; Wang, Y.

2012-12-01

345

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

346

Nonlinear system identification in offshore structural reliability  

SciTech Connect

Nonlinear forces acting on offshore structures are examined from a system identification perspective. The nonlinearities are induced by ocean waves and may become significant in many situations. They are not necessarily in the form of Morison`s equation. Various wave force models are examined. The force function is either decomposed into a set of base functions or it is expanded in terms of the wave and structural kinematics. The resulting nonlinear system is decomposed into a number of parallel no-memory nonlinear systems, each followed by a finite-memory linear system. A conditioning procedure is applied to decouple these linear sub-systems; a frequency domain technique involving autospectra and cross-spectra is employed to identify the linear transfer functions. The structural properties and those force transfer parameters are determine with the aid of the coherence functions. The method is verified using simulated data. It provides a versatile and noniterative approach for dealing with nonlinear interaction problems encountered in offshore structural analysis and design.

Spanos, P.D. [Rice Univ., Houston, TX (United States); Lu, R. [Hudson Engineering Corporation, Houston, TX (United States)

1995-08-01

347

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

348

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

349

Activity Based Physics Alternative Homework Assignments: Rocket Motion  

NSDL National Science Digital Library

This web page contains a homework assignment that asks the student to solve problems based on the launch and flight of a rocket. Developed as an alternative to traditional textbook homework, this item is based on the work of the Activity Based Physics project (ABP). Students must make estimations and build their own mathematical models to determine which concepts of classical mechanics apply to each section of the problem set. Topics covered include kinematics, Newton's second law, conservation of energy, and projectile motion. This item is part of a larger collection of alternative homework assignments designed for introductory physics students. Each assignment poses a series of questions about a single context. To successfully complete assignments, students must think critically about how the physical situation could be represented by mathematics.

Redish, Edward F.; Cooney, Patrick; Vick, K.

2008-11-26

350

Phosphoramidates as novel activity-based probes for serine proteases.  

PubMed

Activity-based probes (ABPs) are small molecules that exclusively form covalent bonds with catalytically active enzymes. In the last decade, they have especially been used in functional proteomics studies of proteases. Here, we present phosphoramidate peptides as a novel type of ABP for serine proteases. These molecules can be made in a straightforward manner by standard Fmoc-based solid-phase peptide synthesis, allowing rapid diversification. The resulting ABPs covalently bind different serine proteases, depending on the amino acid recognition element adjacent to the reactive group. A reporter tag enables downstream gel-based analysis or LC-MS/MS-mediated identification of the targeted proteases. Overall, we believe that these readily accessible probes will provide new avenues for the functional study of serine proteases in complex proteomes. PMID:24817682

Haedke, Ute R; Frommel, Sandra C; Hansen, Fabian; Hahne, Hannes; Kuster, Bernhard; Bogyo, Matthew; Verhelst, Steven H L

2014-05-26

351

Women's responses to an activity-based introductory physics program  

NASA Astrophysics Data System (ADS)

It has been said that women ought to like science courses that are hands-on, collaborative, and afford a high degree of personal attention. In this article we examine this assumption by considering some women's responses to Workshop Physics—a calculus-based introductory course sequence in which lectures are abandoned in favor of activity-based collaborative work enhanced by the use of integrated computer tools. Early in the development of the Workshop curriculum an attitude survey revealed that pre-medical junior and senior women were more negative about their experience than either their male counterparts or freshmen and sophomore students. We explored reasons for this phenomenon by interviewing a group of women who had enrolled in Workshop Physics courses.

Laws, Priscilla W.; Rosborough, Pamela J.; Poodry, Frances J.

1999-07-01

352

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

353

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

354

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.

355

Storage of carbon dioxide in offshore sediments.  

PubMed

The battle to reduce greenhouse gas emissions and prevent the most dangerous consequences of climate change will be waged across multiple fronts, including efforts to increase energy efficiency; efforts to deploy nonfossil fuel sources, including renewable and nuclear energy; and investment in adaptation to reduce the impacts of the climate change that will occur regardless of the actions we take. But with more than 80% of the world's energy coming from fossil fuel, winning the battle also requires capturing CO2 from large stationary sources and storing that CO2 in geologic repositories. Offshore geological repositories have received relatively little attention as potential CO2 storage sites, despite their having a number of important advantages over onshore sites, and should be considered more closely. PMID:19779191

Schrag, Daniel P

2009-09-25

356

Offshore platform structure for artic waters  

SciTech Connect

An offshore platform structure of the gravity type intended to be installed on a sea bed in artic or corresponding waters. The platform structure comprises a substructure intended to be completely submerged and supported by the sea bed when in installed position, a superstructure extending up from the substructure and up above the sea bed and a deck superstructure supported by the superstructure above the sea level. A fender is provided intended to protect the superstructure against drifting ice and icebergs, the substructure being provided with a preferably horizontal top support slab supporting the fender, the fender being movably arranged on said support slab and comprising a preferably compartmented cylindrical ring-shaped body with a large weight resting preferably freely on the substructure, intended to be arranged apart from the superstructure when in normal position.

Einstabland, T.

1984-11-27

357

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

358

Lifting equipment for an offshore construction  

SciTech Connect

An offshore construction in which a floatable platform is supported through raisable and lowerable support legs directly or indirectly on the sea bed. At least two cable winches for each support leg are arranged as lifting equipment on the platform. One cable winch is connected through a single cable line with the lower end of a support leg. The other cable winch displays a multiple cable line guided around two pulley blocks. One of these pulley blocks is arranged on the support leg. In order to be able to employ the lifting equipment even in the case of great support leg lengths, the other pulley block is arranged on a ring. This ring surrounds the support leg and is detachably connected through a locking device with the platform.

Mayr, H.

1984-01-24

359

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

360

California offshore wind energy potential Michael J. Dvorak a,*, Cristina L. Archer b  

E-print Network

California offshore wind energy potential Michael J. Dvorak a,*, Cristina L. Archer b , Mark Z December 2009 Keywords: Offshore wind energy California Resource assessment MM5 Bathymetry Mesoscale offshore buoys with high- resolution bathymetry to create a wind energy resource assessment for offshore

361

Method for computing efficient electrical indicators for offshore wind turbine monitoring  

E-print Network

Method for computing efficient electrical indicators for offshore wind turbine monitoring Georgia.cablea, pierre.granjon, christophe.berenguer} @gipsa-lab.grenoble-inp.fr Abstract Offshore wind turbines by offshore deployment of wind farms. The offshore turbines have much lower accessibility(1) so maintenance

Paris-Sud XI, Université de

362

Proceedings of the fifth international offshore mechanics and Arctic engineering (OMAE) symposium. Volume 4  

SciTech Connect

This book presents the papers given at a symposium on offshore platforms. Topics considered at the symposium included climates, Arctic regions, hydrate formation, the buckling of heated oil pipelines in frozen ground, icebergs, concretes, air cushion vehicles, mobile offshore drilling units, tanker ships, ice-induced dynamic loads, adfreeze forces on offshore platforms, and multiyear ice floe collision with a massive offshore structure.

Lunardini, V.J.; Wang, Y.S.; Ayorinde, O.A.; Sodhi, D.V.

1986-01-01

363

Incorporating Irregular Nonlinear Waves in Coupled Simulation of Offshore Wind Turbines  

E-print Network

, and Environmental Engineering The University of Texas, Austin, TX 78712 Design of an offshore wind turbine requires for design of offshore wind turbines. Response of an offshore wind turbine to the input wind and waves, bothIncorporating Irregular Nonlinear Waves in Coupled Simulation of Offshore Wind Turbines Puneet

Manuel, Lance

364

Time Dependent Fluid Occurrence Offshore Taiwan  

NASA Astrophysics Data System (ADS)

Time Dependent Fluid Occurrence Offshore Taiwan Liwen Chenab, Wu-Cheng Chia, Char-Shine Liuc (mma@earth.sinica.edu.tw)(wchi@gate.sinica.edu.tw) ; aInstitute of Earth Sciences, Academia Sinica, Taipei, Taiwan bInstitute of Geosciences, National Taiwan University, Taipei, Taiwan ; cInstitute of Oceanography, National Taiwan University, Taipei, Taiwan Earthquake-induced groundwater flows have been observed recently. Such fluid flow might temporarily change the temperature field in the crust. Here we used seismically detected gas hydrate under seafloor to study the temperature fields at a few hundred meters subbottom depth before, and after the 2006 Henchuan earthquake (Mw7.0). We used the hydrate-related bottom-simulating-reflector (BSR) in seismic profiles to study the effects of gas/fluid migration on the BSR attributes. We have conducted two seismic experiments before and after the earthquake across the same transects near the hypocenter of the earthquake using similar air gun arrays and streamers. By analyzing this unique dataset, we found enhanced BSR reflectivity in average after the earthquake (~0.03), but the Sea-floor reflectivity is very similar (~0.5). We also found changed amplitudes versus offset (AVO) in the dataset (the gradient of reflection coefficient versus the angles was ~-0.34). We interpret these results as a consequence of earthquake-induced gas and fluid migration, bringing the gases underneath the BSR, thus the enhanced reflection coefficients. Next we will explore new methods to use the BSR as a flow meter. Using time-dependent seismic attribute analyses across transects before and after a large earthquake, we found strong evidences of earthquake-related fluid migrations and possibly associated temperature perturbations. This is among the first studies to document such feature in the offshore region.

Chen, L.

2010-12-01

365

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

366

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

367

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

368

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

369

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

370

Activity-based protein profiling of protein arginine methyltransferase 1.  

PubMed

The protein arginine methyltransferases (PRMTs) are SAM-dependent enzymes that catalyze the mono- and dimethylation of peptidyl arginine residues. PRMT1 is the founding member of the PRMT family, and this isozyme is responsible for methylating ?85% of the arginine residues in mammalian cells. Additionally, PRMT1 activity is aberrantly upregulated in heart disease and cancer. As a part of a program to develop isozyme-specific PRMT inhibitors, we recently described the design and synthesis of C21, a chloroacetamidine bearing histone H4 tail analogue that acts as an irreversible PRMT1 inhibitor. Given the covalent nature of the interaction, we set out to develop activity-based probes (ABPs) that could be used to characterize the physiological roles of PRMT1. Herein, we report the design, synthesis, and characterization of fluorescein-conjugated C21 (F-C21) and biotin-conjugated C21 (B-C21) as PRMT1-specific ABPs. Additionally, we provide the first evidence that PRMT1 activity is negatively regulated in a spatial and temporal fashion. PMID:21838253

Obianyo, Obiamaka; Causey, Corey P; Jones, Justin E; Thompson, Paul R

2011-10-21

371

Activity-based kinase profiling of approved tyrosine kinase inhibitors.  

PubMed

The specificities of nine approved tyrosine kinase inhibitors (imatinib, dasatinib, nilotinib, gefitinib, erlotinib, lapatinib, sorafenib, sunitinib, and pazopanib) were determined by activity-based kinase profiling using a large panel of human recombinant active kinases. This panel consisted of 79 tyrosine kinases, 199 serine/threonine kinases, three lipid kinases, and 29 disease-relevant mutant kinases. Many potential targets of each inhibitor were identified by kinase profiling at the K(m) for ATP. In addition, profiling at a physiological ATP concentration (1 mm) was carried out, and the IC(50) values of the inhibitors against each kinase were compared with the estimated plasma-free concentration (calculated from published pharmacokinetic parameters of plasma C(trough) and C(max) values). This analysis revealed that the approved kinase inhibitors were well optimized for their target kinases. This profiling also implicates activity at particular off-target kinases in drug side effects. Thus, large-scale kinase profiling at both K(m) and physiological ATP concentrations could be useful in characterizing the targets and off-targets of kinase inhibitors. PMID:23279183

Kitagawa, Daisuke; Yokota, Koichi; Gouda, Masaki; Narumi, Yugo; Ohmoto, Hiroshi; Nishiwaki, Eiji; Akita, Kensaku; Kirii, Yasuyuki

2013-02-01

372

49 CFR 195.57 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Filing offshore pipeline condition reports. 195.57 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF...

2011-10-01

373

49 CFR 191.27 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Filing offshore pipeline condition reports. 191.27 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF NATURAL...

2012-10-01

374

49 CFR 195.57 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Filing offshore pipeline condition reports. 195.57 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF...

2013-10-01

375

49 CFR 195.57 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Filing offshore pipeline condition reports. 195.57 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF...

2010-10-01

376

49 CFR 191.27 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Filing offshore pipeline condition reports. 191.27 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF NATURAL...

2013-10-01

377

49 CFR 191.27 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Filing offshore pipeline condition reports. 191.27 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF NATURAL...

2010-10-01

378

49 CFR 191.27 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Filing offshore pipeline condition reports. 191.27 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF NATURAL...

2011-10-01

379

49 CFR 195.57 - Filing offshore pipeline condition reports.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Filing offshore pipeline condition reports. 195.57 Section...Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION...DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF...

2012-10-01

380

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

381

Multi-hazard Reliability Assessment of Offshore Wind Turbines  

E-print Network

A probabilistic framework is developed to assess the structural reliability of offshore wind turbines. Probabilistic models are developed to predict the deformation, shear force and bending moment demands on the support structure of wind turbines...

Mardfekri Rastehkenari, Maryam 1981-

2012-12-04

382

Articulation Work in Small-Scale Offshore Software Development Projects  

E-print Network

Articulation Work in Small-Scale Offshore Software Development Projects Alexander Boden Institute. Such practices can be described as a combination of formal coordination and informal articulation work competencies when neglecting articulation work and hint at mismatches between scientific recommendations

383

"Design of Offshore Wind Turbines for Hurricane Resilience" Graduate Seminar  

E-print Network

"Design of Offshore Wind Turbines for Hurricane Resilience" Graduate Seminar Thursday, December 5 of designing a Convention Center Hotel in an Urban Setting " Undergraduate Seminar Tuesday October 08, 2013, 12

Connor, Ed

384

Evaluating Shoreline Response to Offshore Sand Mining for Beach Nourishment  

Microsoft Academic Search

KELLEY, S.W.; RAMSEY, J.S., and BYRNES, M.R., 2004. Evaluating shoreline response to offshore sand mining for beach nourishment. Journal of Coastal Research, 20(1), 89-100. West Palm Beach (Florida), ISSN 0749-0208. An analytical approach that incorporates analysis of nearshore wave transformation and wave-induced longshore sediment transport was developed to quantify the significance of potential physical environmental impacts associated with offshore sand

Sean W. Kelley; John S. Ramsey; Mark R. Byrnes

2004-01-01

385

Evaluation of offshore stocking of Lake Trout in Lake Ontario  

USGS Publications Warehouse

Restoration stocking of hatchery-reared lake trout Salvelinus namaycush has occurred in Lake Ontario since 1973. In U.S. waters, fish stocked through 1990 survived well and built a large adult population. Survival of yearlings stocked from shore declined during 1990–1995, and adult numbers fell during 1998–2005. Offshore stocking of lake trout was initiated in the late 1990s in response to its successful mitigation of predation losses to double-crested cormorants Phalacrocorax auritus and the results of earlier studies that suggested it would enhance survival in some cases. The current study was designed to test the relative effectiveness of three stocking methods at a time when poststocking survival for lake trout was quite low and losses due to fish predators was a suspected factor. The stocking methods tested during 2000–2002 included May offshore, May onshore, and June onshore. Visual observations during nearshore stockings and hydroacoustic observations of offshore stockings indicated that release methods were not a direct cause of fish mortality. Experimental stockings were replicated for 3 years at one site in the southwest and for 2 years at one site in the southeast. Offshore releases used a landing craft to transport hatchery trucks from 3 to 6 km offshore out to 55–60-m-deep water. For the southwest site, offshore stocking significantly enhanced poststocking survival. Among the three methods, survival ratios were 1.74 : 1.00 : 1.02 (May offshore : May onshore : June onshore). Although not statistically significant owing to the small samples, the trends were similar for the southeast site, with survival ratios of 1.67 : 1.00 : 0.72. Consistent trends across years and sites indicated that offshore stocking of yearling lake trout during 2000–2002 provided nearly a twofold enhancement in survival; however, this increase does not appear to be great enough to achieve the 12-fold enhancement necessary to return population abundance to restoration targets.

Lantry, B.F.; O'Gorman, R.; Strang, T.G.; Lantry, J.R.; Connerton, M.J.; Schanger, T.

2011-01-01

386

Offshore LNG (liquefied natural gas) production and storage systems  

Microsoft Academic Search

A barge, outfitted with gas liquefaction processing equipment and liquefied natural gas (LNG) storage tanks, is suggested as a possible way to exploit remote offshore gas production. A similar study with a barge-mounted methanol plant was conducted several years ago, also using remote offshore feed gas. This barge-mounted, LNG system is bow-moored to a single point mooring through which feed

Barden

1982-01-01

387

Offshore oil production not significant polluter, says government report  

Microsoft Academic Search

Only 0.0028% of the oil produced in the Gulf of Mexico from 1971 through 1975 was spilled. World-wide, natural seeps introduce nearly 7 times more oil into the sea than offshore activity, while transportation, the worst offender, puts in 25 times more than offshore oil. The report includes data for spills of 50 bbl or less; about 85.5% of the

Danenberger

1977-01-01

388

[Spectral response analysis of offshore thin oil slicks].  

PubMed

Hyperspectral data of thin oil slicks have some spectral response characteristics, and an experiment of offshore thin oil slicks was designed to measure and analyze their reflectance by using ASD hyperspectral instrument. With the oil slick thickness changing, its color varied from rainbow sheen slick to fuchsine sheen slick, kelly sheen slick, aqua sheen slick, silver sheen slick and light sheen slick. The result suggested that different thin oil slicks have different characteristics, some thin oil slicks could change the reflectance at 440 nm which is the spectral absorption peak value of chlorophyll, and the best hyperspectral band to distinguish the different offshore thin oil slicks is located in the range between 350 and 440 nm. The reflectance of thin oil slicks is higher than that of seawater in the hyperspectral data range from 440 to 900 nm, but has no absorption or reflection characteristics compared to seawater's. It could not be detected in the range of near infrared from 900 to 2,500 nm of offshore thin oil slicks because of high noise, low signal and influence of the atmosphere. Finally, the spectral response theory of offshore thin oil slicks was analyzed, and the results indicated that the interference phenomenon of offshore thin oil slicks could add reflected light and change the reflectance of seawater, hence, increase the feasibility of offshore oil slick remote sensing. PMID:19626887

Lu, Ying-cheng; Tian, Qing-jiu; Qi, Xiao-ping; Wang, Jing-jing; Wang, Xiang-cheng

2009-04-01

389

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

390

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

391

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

392

Offshore oil and gas pipeline technology  

SciTech Connect

This volume is a ''total-systems'' approach to offshore pipeline design, operation, and maintenance. The volume comprises 17 contributed sections reviewing the most important developments in the field over the last few years. The contributors are all internationally recognized experts, and the papers present a broad yet complete review of all aspects of pipeline integrity. Although each topic is treated in depth, the work has been edited with both beginning engineers and experts in mind. Contents include: Deepwater soil analysis for pipelines. The buckling of submarine pipelines. Pipelines lay-stress analysis. Advances in submarine pipeline trenching by ploughing. The remove connection of submarine pipelines. Controlling the internal corrosion of pipelines. Controlling the external corrosion of pipelines using cathodic protection. Pipeline stability and spanning. Pipeline span detection, assessment and correction. Recent developments in pipeline inspection by side-scan sonar. Pipeline safety analysis. Pipeline reliability. A case in pipeline design. Riser design. The operation of gaslines at high pressure. Single point mooring systems-an alternative to pipelines.

Mare, R.F.

1985-01-01

393

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

394

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

395

Activity-based mission planning and plan management for autonomous vehicles  

Microsoft Academic Search

This paper presents an activity-based mission planning and plan management framework that has been developed at the Charles Stark Draper Laboratory. The main contributions of this paper are definition of this activity-based implementation and comparison with other planning implementation approaches (e.g., behavior-based); and explanation of how planning, execution, monitoring, and replanning are implemented within this activity-based approach. One of the

W. D. Hall; J. A. Farrell

1994-01-01

396

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

397

Activity-based Refinement for Abstraction-guided Debapriya Chatterjee, Valeria Bertacco  

E-print Network

Activity-based Refinement for Abstraction-guided Simulation Debapriya Chatterjee, Valeria Bertacco Department of Computer Science and Engineering University of Michigan {dchatt, valeria}@umich.edu ABSTRACT

Bertacco, Valeria

398

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

399

30 CFR 250.417 - What must I provide if I plan to use a mobile offshore drilling unit (MODU)?  

Code of Federal Regulations, 2013 CFR

...plan to use a mobile offshore drilling unit (MODU)? 250...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND...SHELF Oil and Gas Drilling Operations Applying...plan to use a mobile offshore drilling unit (MODU)?...

2013-07-01

400

30 CFR 250.417 - What must I provide if I plan to use a mobile offshore drilling unit (MODU)?  

Code of Federal Regulations, 2012 CFR

...plan to use a mobile offshore drilling unit (MODU)? 250...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND...SHELF Oil and Gas Drilling Operations Applying...plan to use a mobile offshore drilling unit (MODU)?...

2012-07-01

401

30 CFR 250.417 - What must I provide if I plan to use a mobile offshore drilling unit (MODU)?  

Code of Federal Regulations, 2011 CFR

...plan to use a mobile offshore drilling unit (MODU)? 250...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND...SHELF Oil and Gas Drilling Operations Applying...plan to use a mobile offshore drilling unit (MODU)?...

2011-07-01

402

30 CFR 250.417 - What must I provide if I plan to use a mobile offshore drilling unit (MODU)?  

...plan to use a mobile offshore drilling unit (MODU)? 250...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND...SHELF Oil and Gas Drilling Operations Applying...plan to use a mobile offshore drilling unit (MODU)?...

2014-07-01

403

30 CFR 250.417 - What must I provide if I plan to use a mobile offshore drilling unit (MODU)?  

Code of Federal Regulations, 2010 CFR

...plan to use a mobile offshore drilling unit (MODU)? 250...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND...SHELF Oil and Gas Drilling Operations Applying...plan to use a mobile offshore drilling unit (MODU)?...

2010-07-01

404

Framework for assessing impacts of pile-driving noise from offshore wind farm construction on a harbour seal population  

E-print Network

Framework for assessing impacts of pile-driving noise from offshore wind farm construction Keywords: EU habitats directive Appropriate assessment Population consequences Disturbance Offshore wind farm Marine mammal Offshore wind farm developments may impact protected marine mammal populations

Aberdeen, University of

405

30 CFR 285.116 - Requests for information on the state of the offshore renewable energy industry.  

Code of Federal Regulations, 2011 CFR

...on the state of the offshore renewable energy industry. 285.116 Section...OF THE INTERIOR OFFSHORE RENEWABLE ENERGY ALTERNATE USES OF EXISTING...on the state of the offshore renewable energy industry. (a) The...

2011-07-01

406

30 CFR 585.116 - Requests for information on the state of the offshore renewable energy industry.  

Code of Federal Regulations, 2013 CFR

...on the state of the offshore renewable energy industry. 585.116 Section...OF THE INTERIOR OFFSHORE RENEWABLE ENERGY AND ALTERNATE USES OF EXISTING...on the state of the offshore renewable energy industry. (a)...

2013-07-01

407

30 CFR 585.116 - Requests for information on the state of the offshore renewable energy industry.  

Code of Federal Regulations, 2012 CFR

...on the state of the offshore renewable energy industry. 585.116 Section...OF THE INTERIOR OFFSHORE RENEWABLE ENERGY AND ALTERNATE USES OF EXISTING...on the state of the offshore renewable energy industry. (a)...

2012-07-01

408

30 CFR 285.116 - Requests for information on the state of the offshore renewable energy industry.  

Code of Federal Regulations, 2010 CFR

...on the state of the offshore renewable energy industry. 285.116 Section...OF THE INTERIOR OFFSHORE RENEWABLE ENERGY ALTERNATE USES OF EXISTING...on the state of the offshore renewable energy industry. (a)...

2010-07-01

409

30 CFR 585.116 - Requests for information on the state of the offshore renewable energy industry.  

...on the state of the offshore renewable energy industry. 585.116 Section...OF THE INTERIOR OFFSHORE RENEWABLE ENERGY AND ALTERNATE USES OF EXISTING...on the state of the offshore renewable energy industry. (a)...

2014-07-01

410

Coupled Dynamic Analysis of Large-Scale Mono-Column Offshore Wind Turbine with a Single Tether Hinged in Seabed  

E-print Network

The increased interest in the offshore wind resource in both industry and academic and the extension of the wind field where offshore wind turbine can be deployed has stimulated quite a number of offshore wind turbines concepts. This thesis presents...

Chen, Jieyan

2012-10-19

411

76 FR 22130 - Commercial Leasing for Wind Power on the Outer Continental Shelf Offshore New Jersey-Call for...  

Federal Register 2010, 2011, 2012, 2013

...on the Outer Continental Shelf Offshore New Jersey--Call for Information and Nominations...on the Outer Continental Shelf Offshore New Jersey...Outer Continental Shelf (OCS) offshore New Jersey. Although this announcement is...

2011-04-20

412

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

413

A LONGITUDINAL CASE-BASED ASSESSMENT OF SUPPLY CHAIN TIME & COST  

Microsoft Academic Search

This paper explores the issue of costing non value added time with a longitudinal case study in a major international food company over a four year period. A method has been developed for supply chain analysis that uniquely combines existing time and cost tools and techniques, namely Time Based Process Mapping and Activity Based Costing. This paper will demonstrate that

L. Whicker; C. O'Brien

414

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

415

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

416

Detection of wind wakes offshore from satellite SAR  

NASA Astrophysics Data System (ADS)

A study is presented on the mapping of ocean wind fields for detection of wind wakes downstream of an offshore wind farm. The study is based on ERS-2 Synthetic Aperture Radar (SAR) scenes obtained in 2003 over Horns Reef in the North Sea. A large offshore wind farm (80 wind turbines) is located 14-20 km offshore of Denmark on this submerged reef. Meteorological observations are available from an offshore mast; wind speed is measured at four heights up to 62 m and wind direction is measured at 60 m. Maps of wind speed are generated from geophysical model functions (CMOD-4, CMOD-IFR2) with a resolution of 400 m by 400 m using wind direction obtained from in-situ measurements as model input. The wind maps display zones of reduced mean wind speed downstream of the wind farm compared to upwind conditions. The reduction is approximately 10 % immediately behind the wind farm and the wake effect is vanishing over distances in the order of 10 km downstream. This is consistent with wake model predictions. Satellite SAR provides a good estimate of the propagation of wind wakes. Information on how structures affect the local wind climate is useful for wind energy purposes, particularly for siting of future offshore wind farms.

Christiansen, M. B.; Hasager, C. B.

417

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

418

Tubal sterilization by laparoscopy or hysteroscopy: which is the most cost-effective procedure?  

PubMed

By using the activity-based cost/management (ABC/M) system we computed and compared costs needed for laparoscopic tubal sterilization (LTS) and Essure hysteroscopic tubal occlusion (EHTO). We found that total health costs related to consultation and presurgery did not differ between LTS and EHTO; EHTO has low recovery unit costs but is more costly for the operating theater, mainly due to Essure microinserts. PMID:18930457

Franchini, Mario; Cianferoni, Luciano; Lippi, Giuseppe; Calonaci, Francesco; Calzolari, Stefano; Mazzini, Massimo; Florio, Pasquale

2009-04-01

419

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

420

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

421

Modern Explosives - An Economical Offshore Tool  

Microsoft Academic Search

In this paper the limitations of present underwater tools and methods of accomplishing work is discussed and the need for a better system is presented. New cost-effective underwater devices and techniques which utilize modern explosive energy are described. The new technology of \\

J. Ridgeway

1976-01-01

422

Social Connection and Psychological Outcomes in a Physical Activity-Based Youth Development Setting  

ERIC Educational Resources Information Center

It is believed that the social connections formed by participating in physical activity-based positive youth development (PYD) programs contributes to building personal and social assets. In this study, we examined how changes in social connection over a physical activity-based PYD program for low-income youth were associated with changes in…

Ullrich-French, Sarah; McDonough, Meghan H.; Smith, Alan L.

2012-01-01

423

Activity Based Learning in a Freshman Global Business Course: Analyses of Preferences and Demographic Differences  

ERIC Educational Resources Information Center

The present study investigates pre-business students' reaction to Activity Based Learning in a lower division core required course entitled Introduction to Global Business in the business curriculum at California State University Chico. The study investigates students' preference for Activity Based Learning in comparison to a more traditional…

Levine, Mark F.; Guy, Paul W.

2007-01-01

424

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

425

Where the offshore search for oil and gas is headed  

SciTech Connect

This overview of the world's potential offshore oil and gas frontiers points out that although solutions to technical and political problems have opened up some promising areas for exploration, many key frontier basins have yet to be explored by modern technology. Long-standing disputes between bordering countries over offshore rights have deterred exploration activities in the Malvinas basin off Argentina and in the Gulf of Venezuela. Political problems have also slowed activity in the US Atlantic offshore, where Mesozoic reef trends may be related to Mexico's large oil fields. In Canada's Labrador Sea and Grand Banks, the problems are largely operational because of the inclement weather and threatening icebergs. The thick sediments off northern Norway remain untapped due to the deep water, Arctic conditions, and boundary disputes with the USSR. The main areas of active exploration are the Gulf of Thailand-Penyu-Natuna basin in Southeast Asia and Ireland's Porcupine Bight basin.

King, R.E.

1980-10-01

426

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

427

Offshore construction/LOOP (Louisiana Offshore Oil Port Inc. ) marine line system progressing  

SciTech Connect

A discussion of pipelines involved in the LOOP terminal i.e., the three 56 in. OD offloading pipelines, each 8000 ft long, that connect the three mooring systems and the pumping platform, and the 48 in. OD trunkline extending from the pumping platform 18 mi offshore to the Clovelly salt dome storage terminal near Galliano, La., covers the use of Grade X-60 line pipe; buckle arrestors; internal and external pipe coatings, including the 0.156 in. thick coal tar, glass mat reinforced corrosion protective coating on the 48 and 56 in. lines, which in addition were coated with concrete; and pipeline construction, including installation by the ETPM 1601 lay barge, and manual and automatic welding procedures.

Schultz, A.R.

1980-02-11

428

Proceedings of the seventh international conference on offshore mechanics and Arctic engineering  

SciTech Connect

These proceedings collect papers given at a conference on offshore engineering. Topics include: fracture mechanics, vibration testing, wave energy converters, ocean thermal energy converters, underwater pipelines, offshore platforms, and design and installation of permanent mooring systems for tankers.

Chung, J.S.; Sparks, C.P.; Brekke, J.N.; Clukey, E.C.; Penney, T.R.

1988-01-01

429

46 CFR 11.540 - Endorsements as engineers of mobile offshore drilling units (MODUs).  

...2014-10-01 false Endorsements as engineers of mobile offshore drilling units (MODUs). 11.540 Section 11.540... § 11.540 Endorsements as engineers of mobile offshore drilling units (MODUs). Endorsements as chief...

2014-10-01

430

46 CFR 11.540 - Endorsements for engineers of mobile offshore drilling units.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Endorsements for engineers of mobile offshore drilling units. 11.540 Section 11.540 Shipping...11.540 Endorsements for engineers of mobile offshore drilling units. Endorsements as chief engineer...

2012-10-01

431

46 CFR 11.540 - Endorsements for engineers of mobile offshore drilling units.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Endorsements for engineers of mobile offshore drilling units. 11.540 Section 11.540 Shipping...11.540 Endorsements for engineers of mobile offshore drilling units. Endorsements as chief engineer...

2011-10-01

432

46 CFR 11.540 - Endorsements for engineers of mobile offshore drilling units.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Endorsements for engineers of mobile offshore drilling units. 11.540 Section 11.540 Shipping...11.540 Endorsements for engineers of mobile offshore drilling units. Endorsements as chief engineer...

2013-10-01

433

46 CFR 11.540 - Endorsements for engineers of mobile offshore drilling units.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Endorsements for engineers of mobile offshore drilling units. 11.540 Section 11.540 Shipping...11.540 Endorsements for engineers of mobile offshore drilling units. Endorsements as chief engineer...

2010-10-01

434

75 FR 12734 - Taking and Importing Marine Mammals; Taking Marine Mammals Incidental to Operation of Offshore...  

Federal Register 2010, 2011, 2012, 2013

...include a continuation of drilling, production, and emergency...impacts of the planned offshore oil developments at...maintenance, and drilling, as well as vehicles...incidental to operation of offshore oil and gas facilities...production operations; drilling operations;...

2010-03-17

435

46 CFR 11.468 - National officer endorsements for mobile offshore drilling units (MODUs).  

... false National officer endorsements for mobile offshore drilling units (MODUs). 11.468 Section 11.468...468 National officer endorsements for mobile offshore drilling units (MODUs). Officer endorsements for...

2014-10-01

436

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

Federal Register 2010, 2011, 2012, 2013

...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling; Correction AGENCY: Office of Fossil Energy, Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling, (75 FR 37783). This document makes several...

2010-07-09

437

Proceedings of OMAE2006: International Conference on Offshore Mechanics and Arctic Engineering  

E-print Network

of wave measurements made from a gas-drilling platform in South Indian Ocean, offshore from Mossel BayProceedings of OMAE2006: 25th International Conference on Offshore Mechanics and Arctic Engineering

438

78 FR 73882 - Notice of Determination of No Competitive Interest, Offshore Virginia  

Federal Register 2010, 2011, 2012, 2013

...of No Competitive Interest, Offshore Virginia AGENCY: Bureau of Ocean...Outer Continental Shelf (OCS) Wind Energy Research Lease Offshore Virginia...research activities, including wind turbine installation and...

2013-12-09

439

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

440

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

Federal Register 2010, 2011, 2012, 2013

...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

441

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

Federal Register 2010, 2011, 2012, 2013

...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

442

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

Federal Register 2010, 2011, 2012, 2013

...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

443

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

Federal Register 2010, 2011, 2012, 2013

...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

444

46 CFR 11.491 - Officer endorsements for service on offshore supply vessels.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Officer endorsements for service on offshore supply...SEAMEN REQUIREMENTS FOR OFFICER ENDORSEMENTS Professional Requirements for...Officers § 11.491 Officer endorsements for service on offshore...

2010-10-01

445

46 CFR 11.551 - Endorsements for service on offshore supply vessels.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Endorsements for service on offshore supply...SEAMEN REQUIREMENTS FOR OFFICER ENDORSEMENTS Professional Requirements for Engineer Officer § 11.551 Endorsements for service on offshore...

2010-10-01

446

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

447

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

448

33 CFR 147.1106 - Exxon Santa Ynez offshore storage and treatment vessel mooring safety zone.  

Code of Federal Regulations, 2010 CFR

...offshore storage and treatment vessel mooring safety zone. 147.1106 Section 147.1106... OUTER CONTINENTAL SHELF ACTIVITIES SAFETY ZONES § 147.1106 Exxon Santa Ynez...offshore storage and treatment vessel mooring safety zone. (a) Description: The area...

2010-07-01

449

Floating offshore wind farms : demand planning & logistical challenges of electricity generation  

E-print Network

Floating offshore wind farms are likely to become the next paradigm in electricity generation from wind energy mainly because of the near constant high wind speeds in an offshore environment as opposed to the erratic wind ...

Nnadili, Christopher Dozie, 1978-

2009-01-01

450

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

451

Numerical Investigation into the Performance of a Rarefaction Shock Wave Cutter for Offshore Oil-Gas Platform Removal  

NASA Astrophysics Data System (ADS)

The phase change in iron at 13 GPa results in the formation of rarefaction shock waves (RSWs) upon release. The interaction of multiple RSWs induces high tensile stresses within a narrow zone, causing smooth spall. This effect can be exploited to sever cylindrical cross-section pipes, such as those supporting decommissioned offshore oil and gas platforms, using a minimal amount of explosive. Consequently, costs can be reduced and environmental impact minimized. We discuss numerical techniques used to simulate RSWs and the damage to steel resulting from the interaction of multiple RSWs.

Morris, J. P.; Glenn, L. A.; Antoun, T. H.; Lomov, I. N.

2002-07-01

452

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

453

Organizational aspects of engineering system safety: the case of offshore platforms.  

PubMed

Organizational errors are often at the root of failures of critical engineering systems. Yet, when searching for risk management strategies, engineers tend to focus on technical solutions, in part because of the way risks and failures are analyzed. Probabilistic risk analysis allows assessment of the safety of a complex system by relating its failure probability to the performance of its components and operators. In this article, some organizational aspects are introduced to this analysis in an effort to describe the link between the probability of component failures and relevant features of the organizaton. Probabilities are used to analyze occurrences of organizational errors and their effects on system safety. Coarse estimates of the benefits of certain organizational improvements can then be derived. For jacket-type offshore platforms, improving the design review can provide substantial reliability gains, and the corresponding expense is about two orders of magnitude below the cost of achieving the same result by adding steel to structures. PMID:17829207

Paté-Cornell, M E

1990-11-30

454

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

455

Proceedings of the 21st annual offshore technology conference. Volume 1  

SciTech Connect

This book contains the proceedings of a conference on offshore technology. Topics covered include: underwater wet welding of higher strength offshore steels; the proposed extended-reach drilling project; North Sea experience with aluminum drillpipe; and load transfer mechanism to offshore jackets during pile driving.

Not Available

1989-01-01

456

TRANSMISSION OPTIONS FOR OFFSHORE WIND FARMS IN THE UNITED STATES Sally D. Wright, PE  

E-print Network

. The offshore gas and drilling industry uses lower power levels and low (under 10 kV) to medium voltage (10TRANSMISSION OPTIONS FOR OFFSHORE WIND FARMS IN THE UNITED STATES Sally D. Wright, PE Anthony L@ecs.umass.edu, rerl@ecs.umass.edu Abstract While offshore wind farms have been installed in Europe for over a decade

Massachusetts at Amherst, University of

457

OBSERVATIONS ON THE FISH FAUNA ASSOCIATED WITH OFFSHORE PLATFORMS IN THE NORTHEASTERN GULF OF MEXICO  

E-print Network

active only during the day, and others only at night. Offshore oil drilling platforms are known to atOBSERVATIONS ON THE FISH FAUNA ASSOCIATED WITH OFFSHORE PLATFORMS IN THE NORTHEASTERN GULF the summer and fall, but many species begin to move offshore or southward as the water temperature drops

458

Proceedings of the 27th International Conference on OFFSHORE MECHANICS AND ARTIC Engineering  

E-print Network

2008 June 15-20, 2008, Estoril, Portugal OMAE2008-57047 Offshore Drilling Riser VIV Suppression Devices operation in offshore drilling. Properly designed helical strakes are effective in the mitigation of VIVProceedings of the 27th International Conference on OFFSHORE MECHANICS AND ARTIC Engineering OMAE

459

Challenges in the reliability and maintainability data collection for offshore wind turbines  

Microsoft Academic Search

Wind energy is abundantly available both onshore and offshore. As a response to the present climate crisis focus on wind energy is increasing due to its renewable and environmentally friendly characteristics. Due to social and political reasons the trend has been shifted largely from onshore to offshore wind farms. Offshore wind energy production faces a wide range of new challenges

Z. Hameed; J. Vatn; J. Heggset

2011-01-01

460

MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND  

E-print Network

MODULAR MULTI-LEVEL CONVERTER BASED HVDC SYSTEM FOR GRID CONNECTION OF OFFSHORE WIND POWER PLANT U off-shore wind power plants. The MMC consists of a large number of simple voltage sourced converter offshore wind power plants (WPP) because they offer higher energy yield due to a superior wind profile

Chaudhary, Sanjay

461

Investigations of migratory birds during operation of Horns rev offshore wind  

E-print Network

Investigations of migratory birds during operation of Horns rev offshore wind farm: Preliminary analyses of bird studies conducted during spring 2004 in relation to the offshore wind farm at Horns Rev of the Horns Rev offshore wind farm - preliminary note on the issue of potential habitat loss. Christensen, T

462

AN EVALUATION OF THE WILDLIFE IMPACTS OF OFFSHORE WIND DEVELOPMENT RELATIVE TO FOSSIL FUEL  

E-print Network

AN EVALUATION OF THE WILDLIFE IMPACTS OF OFFSHORE WIND DEVELOPMENT RELATIVE TO FOSSIL FUEL POWER. Jarvis All Rights Reserved #12;AN EVALUATION OF THE WILDLIFE IMPACTS OF OFFSHORE WIND DEVELOPMENT in offshore wind energy. I would also like to thank my committee members, Dr. Jeremy Firestone

Firestone, Jeremy

463

1 1 1 1 1 1 2 2 Network of offshore wind farms connected by  

E-print Network

2 33 3 3 1 1 1 1 1 1 2 2 Network of offshore wind farms connected by gas insulated transmission, Germany Corresponding author: anja.drews@forwind.de Offshore wind parks in different stages.Green- in op - unknown Source:Siemens Cross-section of a GIL (one of three phases) 1 Future offshore wind power What

Heinemann, Detlev

464

MAST628 Syllabus-8/12/2014 p. 1 Offshore Wind Power: Science, engineering, and policy  

E-print Network

MAST628 Syllabus- 8/12/2014 p. 1 Offshore Wind Power: Science, engineering, and policy MAST 628-4842, dveron@udel.edu, Robinson 114B Class web site with lecture notes: www.udel.edu/sakai UD offshore wind the multiple disciplines required to understand, plan, regulate, and develop offshore wind resources for large

Delaware, University of

465

From%laggard%to%leader:%% Explaining%offshore%wind%developments%in%  

E-print Network

From%laggard%to%leader:%% Explaining%offshore%wind%developments%in% the%UK% Florian!laggard!to!leader:!Explaining! offshore!wind!developments!in!the!UK! Florian Kern1* , Adrian Smith1 , Chris Shaw1 , Rob Raven2 and Bram for publication in Energy Policy, 19 Feb 2014 Abstract Offshore wind technology has recently undergone rapid

Sussex, University of

466

GEOL 663 -GEOLOGICAL ASPECTS OF OFFSHORE WIND COURSE SYLLABUS 2014 Fall Semester  

E-print Network

GEOL 663 - GEOLOGICAL ASPECTS OF OFFSHORE WIND COURSE SYLLABUS ­ 2014 Fall Semester Course Meets will be designed around geological and geotechnical topics that are relevant to the development of offshore wind wind turbine foundations; 2) A review of existing, or under construction, offshore wind projects; and 3

Delaware, University of

467

A MODULAR SHM-SCHEME FOR ENGINEERING STRUCTURES UNDER CHANGING CONDITIONS: APPLICATION TO AN OFFSHORE WIND  

E-print Network

TO AN OFFSHORE WIND TURBINE Moritz W. H¨ackell1, Raimund Rolfes1 1 Institute of Structural Analysis, Leibniz in common. A shift from fossil to renewable energy source is the logical con- sequence. (Offshore) wind : Offshore Wind Turbine, Machine Learning, Condition Parameter, Control Charts, Affinity Propagation

Paris-Sud XI, Université de

468

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES  

E-print Network

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND important for offshore wind energy utilisation are discussed and tested: Four models for the surface tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

Heinemann, Detlev

469

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES  

E-print Network

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES important for offshore wind energy utilisation are discussed and tested: Four models for the surface that an important part of the future expansion of wind energy utilisation at least in Europe will come from offshore

Heinemann, Detlev

470

Analytical Modelling of Wind Speed Deficit in Large Offshore Wind Farms  

E-print Network

Analytical Modelling of Wind Speed Deficit in Large Offshore Wind Farms Sten Frandsen*, Rebecca areas.As is often the need for offshore wind farms, the model handles a regular array geometry for offshore wind farms, the model handles a priori a regular array geometry with straight rows of wind

Pryor, Sara C.

471

DATA NORMALIZATION FOR FOUNDATION SHM OF AN OFFSHORE WIND TURBINE : A REAL-LIFE CASE STUDY  

E-print Network

DATA NORMALIZATION FOR FOUNDATION SHM OF AN OFFSHORE WIND TURBINE : A REAL-LIFE CASE STUDY Wout the first results in the development of a SHM approach for the foun- dations of an offshore wind turbine the performance of the presented approach. KEYWORDS : Foundation Monitoring, Offshore Wind Turbine, Operational

Paris-Sud XI, Université de

472

Short-term Forecasting of Offshore Wind Farm Production Developments of the Anemos Project  

E-print Network

Short-term Forecasting of Offshore Wind Farm Production ­ Developments of the Anemos Project J to the large dimensions of offshore wind farms, their electricity production must be known well in advance that the accuracies of wind speed predictions for the offshore sites Horns Rev and FiNO1 are similar or better than

Paris-Sud XI, Université de

473

A FETCH DEPENDENT MODEL OF SEA SURFACE ROUGHNESS FOR OFFSHORE WIND POWER UTILISATION  

E-print Network

A FETCH DEPENDENT MODEL OF SEA SURFACE ROUGHNESS FOR OFFSHORE WIND POWER UTILISATION Bernhard Lange, Resources, Roughness, Coastal Sea Areas, Waves, Rødsand 1 INTRODUCTION Large offshore wind farms are being wind conditions of offshore sites, since the higher energy yield has to compensate the additional

Heinemann, Detlev

474

Offshore wind resources from satellite SAR Charlotte Bay Hasager, Merete Bruun Christiansen, Morten Nielsen,  

E-print Network

Offshore wind resources from satellite SAR Charlotte Bay Hasager, Merete Bruun Christiansen, Morten ocean wind maps were described. For offshore wind resource estimation based on satellite observations and the near-coastal zone (up to 40 km offshore) is not mapped. In contrast, Envisat ASAR wind maps can

475

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

E-print Network

From the SelectedWorks of George R. Parsons May 2011 Valuing the Visual Disamenity of Offshore Wind of Offshore Wind Power Projects at Varying Distances from the Shore: An Application on the Delaware Shoreline Andrew D. Krueger, George R. Parsons, and Jeremy Firestone ABSTRACT. Several offshore wind power projects

Delaware, University of

476

THE INFLUENCE OF WAVES ON THE OFFSHORE WIND Bernhard Lange, Jrgen Hjstrup*  

E-print Network

THE INFLUENCE OF WAVES ON THE OFFSHORE WIND RESOURCE Bernhard Lange, Jørgen Højstrup* Risø National and waves and thus in air-sea interaction in general. For predicting the offshore wind climate'8&7,21 The favourable wind resource at offshore compared to land sites is caused by the very low surface roughness

Heinemann, Detlev

477

Wind resources and wind farm wake effects offshore observed from satellite  

E-print Network

Wind resources and wind farm wake effects offshore observed from satellite Charlotte Bay Hasager to quantify the wake effect at two large offshore wind farms in Denmark. It is found that the wake velocity than for near-neutral conditions. Keywords: satellite, offshore wind resource, wake. 1 Introduction

478

The dynamics of the Mississippi River plume: Impact of topography, wind and offshore forcing  

E-print Network

The dynamics of the Mississippi River plume: Impact of topography, wind and offshore forcing), The dynamics of the Mississippi River plume: Impact of topography, wind and offshore forcing on the fate of topography, winddriven and eddydriven circulation on the offshore removal of plume waters. A realistically

Miami, University of

479

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES  

E-print Network

EVALUATION OF MODELS FOR THE VERTICAL EXTRAPOLATION OF WIND SPEED MEASUREMENTS AT OFFSHORE SITES important for offshore wind energy utilisation are discussed and tested: Four models for the surface tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

Heinemann, Detlev

480

GEOL 467/667/MAST 667 -GEOLOGICAL ASPECTS OF OFFSHORE WIND PROJECTS **TENTATIVE** COURSE SYLLABUS  

E-print Network

GEOL 467/667/MAST 667 - GEOLOGICAL ASPECTS OF OFFSHORE WIND PROJECTS **TENTATIVE** COURSE SYLLABUS Description: Investigation of the geological and geotechnical aspects of offshore wind projects. Emphasis will be designed around geological and geotechnical topics that are relevant to the development of offshore wind

Firestone, Jeremy

481

American Institute of Aeronautics and Astronautics Foundation Models for Offshore Wind Turbines  

E-print Network

American Institute of Aeronautics and Astronautics 1 Foundation Models for Offshore Wind Turbines of alternative models for monopile pile foundations for shallow-water offshore wind turbines has on extreme loads) is the most common type of foundation used today for offshore wind turbines; the support structure connects

Manuel, Lance

482

Influences of offshore environmental conditions on wind shear profile parameters in Nantucket Sound  

E-print Network

Influences of offshore environmental conditions on wind shear profile parameters in Nantucket Sound@ecs.umass.edu ABSTRACT Simultaneous wind resource and oceanographic data are available from an offshore monitoring tower how oceanographic data can be used to aid offshore wind resource assessment evaluations. This study

Massachusetts at Amherst, University of

483

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND FARM SITES  

E-print Network

MODELLING THE VERTICAL WIND SPEED AND TURBULENCE INTENSITY PROFILES AT PROSPECTIVE OFFSHORE WIND for conditions important for offshore wind energy utilisation are compared and tested: Four models tested with data from the offshore field measurement Rødsand by extrapolating the measured 10 m wind

Heinemann, Detlev

484

A FRESH LOOK AT OFFSHORE WIND OPPORTUNITIES IN MASSACHUSETTS Anthony L. Rogers, Ph.D.  

E-print Network

A FRESH LOOK AT OFFSHORE WIND OPPORTUNITIES IN MASSACHUSETTS Anthony L. Rogers, Ph.D. James F at Amherst Amherst, MA 01003 The utilization of offshore winds for generating electricity was first proposed that offshore wind development anywhere would be unlikely. More recently, a number of European countries have

Massachusetts at Amherst, University of

485

VALUING PUBLIC PREFERENCES FOR OFFSHORE WIND POWER: A CHOICE EXPERIMENT APPROACH  

E-print Network

VALUING PUBLIC PREFERENCES FOR OFFSHORE WIND POWER: A CHOICE EXPERIMENT APPROACH by Andrew D. Krueger All Rights Reserved #12;ii VALUING PUBLIC PREFERENCES FOR OFFSHORE WIND POWER: A CHOICE EXPERIMENT thank you for your perspective on offshore renewable energy regulation. As committee members, your

Firestone, Jeremy

486

PREDICTION OF WAVES, WAKES AND OFFSHORE WIND THE RESULTS OF THE POW'WOW PROJECT  

E-print Network

PREDICTION OF WAVES, WAKES AND OFFSHORE WIND ­ THE RESULTS OF THE POW'WOW PROJECT Gregor Giebel: The POWWOW project (Prediction of Waves, Wakes and Offshore Wind, a EU Coordination Action) aimed to develop. Keywords: Wind resource, wave resource, offshore, short-term prediction, wakes 1 Introduction The nearly

Paris-Sud XI, Université de

487

Mesoscale modelling for an offshore wind farm Jake Badger*, Rebecca Barthelmie, Sten Frandsen, Merete Bruun Christiansen  

E-print Network

Mesoscale modelling for an offshore wind farm Jake Badger*, Rebecca Barthelmie, Sten Frandsen for an offshore wind farm in a coastal location. Spatial gradients and vertical profiles between 25 m and 70 m offshore wind farms tend to be placed within the coastal zone, the region within around 50km from

488

RWT TOOL: OFFSHORE WIND ENERGY MAPPING FROM SAR C. B. Hasager, M. Nielsen, M. B. Christiansen  

E-print Network

RWT TOOL: OFFSHORE WIND ENERGY MAPPING FROM SAR C. B. Hasager, M. Nielsen, M. B. Christiansen Risø by Risoe National Laboratory, Dept. of Wind Energy for assessment of offshore wind resource maps based an alternative method for wind data input in offshore regions based on satellite SAR wind field observations

489

LEEDCo awarded $4 million to launch offshore wind development on Lake Erie  

E-print Network

LEEDCo awarded $4 million to launch offshore wind development on Lake Erie By Teresa Dixon Murray in the United States, the Lake Erie Energy Development Corp. of Cleveland will launch an offshore wind, Democrat of Ohio, who has pushed for such alternative energy projects for years, said offshore wind could

Rollins, Andrew M.

490

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.

491

Prof Choo in Standing Committee of International Ship and Offshore Structures Congress  

E-print Network

Prof Choo in Standing Committee of International Ship and Offshore Structures Congress WITH SINGAPORE newly elected to the International Ship and Offshore Structures Congress (ISSC), Prof Choo Yoo: Committee V.4 ­ Ocean Wave & Wind Energy Utilisation #12; The 17th International Ship and Offshore

Chaudhuri, Sanjay

492

77 FR 42467 - Special Local Regulations; Fajardo Offshore Festival II, Fajardo, PR  

Federal Register 2010, 2011, 2012, 2013

...during the Fajardo Offshore Festival II. C. Discussion of Proposed...sponsoring the Fajardo Offshore Festival II, a series of high-speed...Regulations; Fajardo Offshore Festival II, Rada Fajardo, Fajardo...All coordinates are North American Datum 1983. (1) Race...

2012-07-19

493

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

Federal Register 2010, 2011, 2012, 2013

...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

494

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

495

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

496

New report assesses offshore wind technology challenges and potential risks and benefits.  

E-print Network

New report assesses offshore wind technology challenges and potential risks and benefits tremendous benefits to the United States.Technological needs are generally focused on making offshore wind understanding of the offshore wind resource, and details the associated technology challenges, econom- ics

497

75 FR 29569 - Certificate of Alternative Compliance for the Offshore Supply Vessel JANSON R. GRAHAM  

Federal Register 2010, 2011, 2012, 2013

...Compliance for the Offshore Supply Vessel JANSON R. GRAHAM AGENCY: Coast Guard, DHS. ACTION...issued for the offshore supply vessel JANSON R. GRAHAM as required by 33 U.S.C. 1605...issued for the offshore supply vessel JANSON R. GRAHAM, O.N. 1222117. Full...

2010-05-26

498

Proceedings of the Conference Arctic '85; Civil Engineering in the Artic offshore  

Microsoft Academic Search

Topics of the 1985 Conference included: Arctic construction, Arctic foundation, Arctic structures, and ocean effects. Arctic terminals and coastal offshore bases, protecting the Arctic environment, and probabilistic methods in Arctic offshore engineering were also discussed. Ice mechanics, marine pipelines in the Arctic, and the role of universities in training civil engineers for Arctic offshore development were highlighted. Sessions on remote

F. L. Bennett; J. L. Machemehl

1985-01-01

499

Fluctuations of offshore wind generation -Statistical modelling , L.E.A. Christensen, H. Madsen  

E-print Network

, Lyngby, Denmark pp@imm.dtu.dk P.E. Sørensen Wind Energy Department, Risø National Laboratory, Roskilde of power fluctuations at large offshore wind farms has a significant impact on the control and management. An overview of offshore wind energy in Europe is given in [1]. Such large offshore wind farms concentrate

500

Modelling of offshore wind turbine wakes with the wind farm program FLaP  

E-print Network

from the Danish offshore wind farm Vindeby. Vertical wake profiles and mean turbulence intensities. The effect of the low turbulence intensity offshore on the wake development is modelled well for the Vindeby are not modelled satisfactorily. Keywords: Offshore, wind farm, wake model, Vindeby, turbulence intensity

Heinemann, Detlev