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1

Deep water offshore jacket removal  

SciTech Connect

After an oil or gas field is no longer economically exploitable, the offshore structure is no longer of any use. This means that a solution must be found for the platform abandonment. There are two options to choose from: leave the platform in place or remove the platform. In this paper the second option is further investigated.

Herel, E.C.P. van; Wijninckx, A. [HeereMac VOF, Leiden (Netherlands); Wardenier, J. [Delft Univ. of Technology (Netherlands)

1995-12-31

2

Method and apparatus for positioning an offshore platform jacket  

Microsoft Academic Search

A method is described of positioning an offshore platform jacket comprising the steps of: loading and securing the platform jacket onto a tension leg barge; towing the tension leg barge to a predetermined offshore location; laying anchors on the floor of the ocean at the predetermined offshore location; attaching lines between the anchors and the tension leg barge to position

Oksuzler

1987-01-01

3

Method and apparatus for positioning an offshore platform jacket  

SciTech Connect

A method is described of positioning an offshore platform jacket comprising the steps of: loading and securing the platform jacket onto a tension leg barge; towing the tension leg barge to a predetermined offshore location; laying anchors on the floor of the ocean at the predetermined offshore location; attaching lines between the anchors and the tension leg barge to position and maintain the barge above the predetermined offshore location; partially submerging the tension leg barge by shortening the lines between the anchors and the tension leg barge; completing the submerging of the tension leg barge by flooding the barge with seawater; and releasing the platform jacket from the tension leg barge and towing the jacket off the barge while the barge is submerged.

Oksuzler, Y.

1987-09-01

4

Sliding mode control for offshore steel jacket platforms  

Microsoft Academic Search

This paper is concerned with sliding mode control of offshore steel jacket platforms subject to nonlinear wave-induced forces. Two sliding mode control schemes are proposed to reduce the oscillation amplitudes of the platforms. One scheme is that a conventional sliding mode controller (SMC) is designed, under the SMC the oscillation amplitudes of the platform are effectively reduced; however, a very

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

2010-01-01

5

Pitting corrosion on weld joints of offshore structure jackets  

SciTech Connect

During underwater inspection, pitting corrosion was observed on weld joints of offshore structure jackets. A detailed investigation was carried out to find the cause of the pitting. Pitting and galvanic corrosion studies and cathodic protection experiments were carried out in synthetic seawater and in 3.5% sodium chloride (NaCl) solution. Field exposure studies also were carried out. Remedial measures are described.

Anto, P.F.

2000-04-01

6

Pitting corrosion on weld joints offshore structure jackets  

SciTech Connect

During underwater inspection, pitting corrosion was observed on various weld joints of offshore structure jackets. For this purpose, during underwater inspection surveys cathodic protection potentials were measured at different locations on the jackets. The position and condition of anodes were also examined. Pitting and galvanic corrosion studies and cathodic protection experiments were carried out in synthetic sea water and in 3.5% NaCl solution. Field exposure studies were also carried out. The present paper describes the investigations carried out to determine reasons for pitting corrosion on weld joints and remedial measures.

Anto, P.F. [Oil and Natural Gas Corp. Ltd., Panvel (India). Inst. of Engineering and Ocean Technology

1999-11-01

7

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

8

A Probabilistic Deformation Demand Model and Fragility Estimates for Asymmetric Offshore Jacket Platforms  

E-print Network

to assess the deformation demand on asymmetric offshore jacket platforms subject to wave and current loadings. The probabilistic model is constructed by adding correction terms and a model error to an existing deterministic deformation demand model...

Fallon, Michael Brooks

2012-11-12

9

SUBSPACE-BASED DETECTION OF FATIGUE DAMAGE ON JACKET SUPPORT STRUCTURES OF OFFSHORE WIND TURBINES  

E-print Network

SUBSPACE-BASED DETECTION OF FATIGUE DAMAGE ON JACKET SUPPORT STRUCTURES OF OFFSHORE WIND TURBINES structures of wind energy turbines. Based on results of an experimental fatigue test on a steel frame damage in real size structural components of offshore wind turbines. KEYWORDS : Damage detection

Paris-Sud XI, Université de

10

Grouting of offshore jackets to distribute forces among the anchoring piles  

Microsoft Academic Search

An offshore jacket is provided which comprises a plurality of main hollow pile sleeves and a plurality of secondary hollow pile sleeves of shorter height than the main sleeves and connected thereto by framing. A plurality of main piles and secondary piles are disposed within the main sleeves and secondary sleeves, respectively, and project downwardly therebeyond into the seabed. The

Weidler

1981-01-01

11

Finite element simplified fatigue analysis method for a non-tubular joint of an offshore jacket platform  

NASA Astrophysics Data System (ADS)

This paper proposes the finite element simplified fatigue analysis method for fatigue evaluation of the composite non-tubular joint structure of an offshore jacket subjected to wave loads. The skirt pile sleeve of the offshore jacket, which had been in service, was taken as an example of the non-tubular joint structure. SACS software was used for global analysis of multi-directional wave loads for the jacket platform, and ALGOR software was used to build a finite element model, perform finite element analysis, post-process stress results for acquiring the stress range, and perform fatigue evaluation. The analysis results indicate that the extreme stress range is within the allowable stress range and meets the requirements of DNV code. That means the simplified fatigue analysis method is effective and can be used in fatigue design for the non-tubular joint structure of an offshore jacket.

Bao, Qinghua; Feng, Heng

2011-09-01

12

Network-based modelling and active control for offshore steel jacket platform with TMD mechanisms  

NASA Astrophysics Data System (ADS)

The network-based modelling and active control for an offshore steel jacket platform with an active tuned mass damper mechanism is investigated. A network-based dynamic model of the offshore platform is first established. A network-based state feedback control scheme is developed. Under this scheme, the corresponding closed-loop system is modelled by a system with an artificial interval time-varying delay. Then, a delay-dependent stability criterion for the corresponding closed-loop system is derived. Based on this stability criterion, a sufficient condition on the existence of the network-based controller is obtained. It is found through simulation results that (i) both the oscillation amplitudes of the offshore platform and the required control force under the network-based state feedback controller are smaller than those under the nonlinear controller and the dynamic output feedback controller; (ii) the oscillation amplitudes of the offshore steel jacket platform under the network-based feedback controller are almost the same as the ones under the integral sliding mode controller, while the required control force by the former is smaller than the one by the latter.

Zhang, Bao-Lin; Han, Qing-Long

2014-12-01

13

Differentiating between Underwater Construction Noise of Monopile and Jacket Foundations for Offshore Windmills: A Case Study from the Belgian Part of the North Sea  

PubMed Central

Steel monopiles, jackets requiring four steel pinpiles, and gravity-based foundations were applied in offshore wind farms in the Belgian part of the North Sea. This paper compares the underwater noise generated during the piling activities of steel monopiles at the Belwind wind farm (Blighbank) with that of jacket pinpiles at the C-Power project (Thorntonbank). Underwater noise was measured at various distances from the pile driving location. The underwater noise was quantified by its zero to peak sound pressure level (Lz?p), unweighted sound exposure level (SEL), cumulative SEL, and 1/3 octave spectra. No significant differences in Lz?p could be demonstrated (monopile Lz?p: 179–194?dB?re 1??Pa, jacket Lz?p: 172–189?dB?re 1??Pa). SEL showed no statistical difference between monopile and jacket and varied between 145 and 168?dB?re 1??Pa2s. Furthermore, near identical spectra were measured for both types of piling. Piling of the jacket pinpiles took, however, about 2.5 times the time of the monopile. When standardised to megawatt installed per foundation both types of piling scored near equally. As an illustration, the radius of major behavioural disturbance (Lp?p = 155?dB?re 1??Pa) in the harbour porpoise Phocoena phocoena was estimated by a model at 16?km for monopiles and at 8?km for jacket. PMID:23576910

Norro, Alain Michel Jules; Rumes, Bob; Degraer, Steven Johan

2013-01-01

14

Differentiating between underwater construction noise of monopile and jacket foundations for offshore windmills: a case study from the Belgian part of the North Sea.  

PubMed

Steel monopiles, jackets requiring four steel pinpiles, and gravity-based foundations were applied in offshore wind farms in the Belgian part of the North Sea. This paper compares the underwater noise generated during the piling activities of steel monopiles at the Belwind wind farm (Blighbank) with that of jacket pinpiles at the C-Power project (Thorntonbank). Underwater noise was measured at various distances from the pile driving location. The underwater noise was quantified by its zero to peak sound pressure level (L(z-p)), unweighted sound exposure level (SEL), cumulative SEL, and 1/3 octave spectra. No significant differences in L(z-p) could be demonstrated (monopile L(z-p): 179-194?dB? re 1? ?Pa, jacket L(z-p): 172-189?dB? re 1? ?Pa). SEL showed no statistical difference between monopile and jacket and varied between 145 and 168?dB? re 1? ?Pa(2)s. Furthermore, near identical spectra were measured for both types of piling. Piling of the jacket pinpiles took, however, about 2.5 times the time of the monopile. When standardised to megawatt installed per foundation both types of piling scored near equally. As an illustration, the radius of major behavioural disturbance (L(p-p) = 155?dB? re 1? ?Pa) in the harbour porpoise Phocoena phocoena was estimated by a model at 16?km for monopiles and at 8?km for jacket. PMID:23576910

Norro, Alain Michel Jules; Rumes, Bob; Degraer, Steven Johan

2013-01-01

15

The role of redundancy in jacket-type offshore platforms  

E-print Network

. The reliability of a structure is influenced by its ability to redistribute and carry load after the failure of a component or components. The reliability of the structure, in fact, increases as the ability to redis- tribute load increases. The ability... to redistribute load is dependant upon the redundancy of the structure and the strength remaining in the system. Clearly, if all of the members in a highly redundant system are simultaneously loaded to their maximum strength, the structure will collapse if a...

Womble, J'nina Elaine

2012-06-07

16

Jacketed lamp bulb envelope  

DOEpatents

A jacketed lamp bulb envelope includes a ceramic cup having an open end and a partially closed end, the partially closed end defining an aperture, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material at least partially covering a portion of the bulb not abutting the aperture. The reflective ceramic material may substantially fill an interior volume of the ceramic cup not occupied by the bulb. The ceramic cup may include a structural feature for aiding in alignment of the jacketed lamp bulb envelope in a lamp. The ceramic cup may include an external flange about a periphery thereof. One example of a jacketed lamp bulb envelope includes a ceramic cup having an open end and a closed end, a ceramic washer covering the open end of the ceramic cup, the washer defining an aperture therethrough, a lamp bulb positioned inside the ceramic cup abutting the aperture, and a reflective ceramic material filling an interior volume of the ceramic cup not occupied by the bulb. A method of packing a jacketed lamp bulb envelope of the type comprising a ceramic cup with a lamp bulb disposed therein includes the steps of filling the ceramic cup with a flowable slurry of reflective material, and applying centrifugal force to the cup to pack the reflective material therein.

MacLennan, Donald A. (Gaithersburg, MD); Turner, Brian P. (Damascus, MD); Gitsevich, Aleksandr (Gaithersburg, MD); Bass, Gary K. (Mt. Airy, MD); Dolan, James T. (Frederick, MD); Kipling, Kent (Gaithersburg, MD); Kirkpatrick, Douglas A. (Great Falls, VA); Leng, Yongzhang (Damascus, MD); Levin, Izrail (Silver Spring, MD); Roy, Robert J. (Frederick, MD); Shanks, Bruce (Gaithersburg, MD); Smith, Malcolm (Alexandria, VA); Trimble, William C. (Columbia, MD); Tsai, Peter (Olney, MD)

2001-01-01

17

The tension raft jacket concept  

SciTech Connect

Concept level engineering has been performed for a promising new deepwater platform design. The tension raft jacket (TRJ) employs a fairly conventional fixed platform-type jacket and deck supported by a deeply submerged buoyant concrete raft. The raft is founded to the sea bottom by vertically tensioned tendons similar to conventional TLPs. Tensioned drilling and production risers are used. A TRJ design is discussed for a medium-size deck payload and a water depth of about 1,500 feet. Work to date includes preliminary sizing of the deck, jacket, raft and tendons; global response analysis; development of potential fabrication and installation methods; and development of preliminary schedules and costs. The TRJ concept is expected to compete with compliant tower platforms in shallow water depths and with large drilling TLPs in deep water. The primary benefits of the TRJ concept are simplicity of design, constructability with existing Gulf of Mexico (GOM) infrastructure, lower capital costs, and shorter development schedules.

Abbott, P.; Nygaard, C.; Greiner, W.; Johnson, B.; Datta, B.; Dove, P.G.S.; Souza, R.D.

1995-05-01

18

Variable pressure thermal insulating jacket  

DOEpatents

A device for controlled insulation of a thermal device. The device includes a thermal jacket with a closed volume able to be evacuated to form an insulating jacket around the thermal source. A getter material is in communcation with the closed volume of the thermal jacket. The getter material can absorb and desorb a control gas to control gas pressure in the volume of the thermal jacket to control thermal conductivity in the thermal jacket.

Nelson, Paul A. (Wheaton, IL); Malecha, Richard F. (Naperville, IL); Chilenskas, Albert A. (Chicago, IL)

1994-01-01

19

Regeneratively Cooled Porous Media Jacket  

NASA Technical Reports Server (NTRS)

The fluid and heat transfer theory for regenerative cooling of a rocket combustion chamber with a porous media coolant jacket is presented. This model is used to design a regeneratively cooled rocket or other high temperature engine cooling jacket. Cooling jackets comprising impermeable inner and outer walls, and porous media channels are disclosed. Also disclosed are porous media coolant jackets with additional structures designed to transfer heat directly from the inner wall to the outer wall, and structures designed to direct movement of the coolant fluid from the inner wall to the outer wall. Methods of making such jackets are also disclosed.

Mungas, Greg (Inventor); Fisher, David J. (Inventor); London, Adam Pollok (Inventor); Fryer, Jack Merrill (Inventor)

2013-01-01

20

Development of the floating structure for the Sailing-type Offshore Wind Farm  

Microsoft Academic Search

Feasibility studies for the sailing-type offshore wind farm have been carried out by National Institute for Environmental Studies. This system is composed of a very large floating offshore structure with sails and a lot of wind turbines on the structure. Conventional catenary mooring system is no longer practical for station-keeping a kilometer sized floating structures in over hundreds meters of

H. Manabe; T. Uehiro; M. Utiyama; H. Esaki; T. Kinoshita; K. Takagi; H. Okamura; M. Satou

2008-01-01

21

[Sunrise gold foil jacket crown].  

PubMed

This technique permits the preparation of ceramic jacket crowns made on Sunrise laminated precious metal alloy. The Sunrise foil is gold-colored, made of 99% of precious metals and is 50 microns thick. The die is prepared in order to display a moderate and regular undercut beyond the cervical limit. The margin will be underlined with a red pencil. The Sunrise foil is cut according to predetermined templates. Then the foil is applied without burnishing, according to the technique of jacket crowns on platinum foil only by finger pressure. The double folding on closure is preferably done distally or mesially. Then, the metal base is disinserted, sandblasted with 100 microns aluminum oxide, replaced on its die, and placed in a rubber casing before being placed in the isostatic press, to be subjected to a pressure of 2,000 TSI (14 kg par cm2). Sunrise's orange color reinforces rather subtetly the overall color, making these reconstructions particularly esthetic. The color of the Sunrise metal does not require, therefore a too thick opaque. Any ceramic intended to be fired on a metal base, may be used in respecting its firing protocol. Sunrise, as any other technique of this type, require a careful preparation with a shoulder that has a rounded gingivoaxial line angle. Bridges may be built on the "thimbles" crowns, fitted on Sunrise cores, the pontics being made as a ceramo-metal framework. PMID:2700672

Lecardonnel, A

1989-09-01

22

FRP jacketed concrete under uniaxial compression  

Microsoft Academic Search

The purpose of this investigation was to develop experimental data and check the validity of existing analytical models for the behaviour of concrete members jacketed (i.e., laterally confined) with fibre-reinforced plastic (frp) materials. The test specimens consisted of 150 × 300 mm cylinders of normal weight, normal strength concrete. Specimens loaded statically under uniaxial compression were studied. Three different types

Antonio Nanni; Nick M. Bradford

1995-01-01

23

46 CFR 117.71 - Life jackets.  

Code of Federal Regulations, 2013 CFR

...Shipping 4 2013-10-01 2013-10-01 false Life jackets. 117.71 Section 117.71 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.71 Life jackets. (a) An...

2013-10-01

24

46 CFR 117.71 - Life jackets.  

Code of Federal Regulations, 2011 CFR

...Shipping 4 2011-10-01 2011-10-01 false Life jackets. 117.71 Section 117.71 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.71 Life jackets. (a) An...

2011-10-01

25

46 CFR 117.71 - Life jackets.  

Code of Federal Regulations, 2010 CFR

...Shipping 4 2010-10-01 2010-10-01 false Life jackets. 117.71 Section 117.71 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.71 Life jackets. (a) An...

2010-10-01

26

46 CFR 117.71 - Life jackets.  

Code of Federal Regulations, 2012 CFR

...Shipping 4 2012-10-01 2012-10-01 false Life jackets. 117.71 Section 117.71 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.71 Life jackets. (a) An...

2012-10-01

27

Life Jacket Policy Study 15 Jan 2012  

E-print Network

Life Jacket Policy Study 15 Jan 2012 #12;2 TABLE OF CONTENTS I. INTRODUCTION.........................................................................18 APPENDICES: A...........................LIFE JACKET MANDATE STUDY INTERIM REPORT B...........................RESERVED G...........................LIFE JACKET LOANER PROGRAM GUIDELINES H

US Army Corps of Engineers

28

Vacuum-jacketed line spacer  

NASA Technical Reports Server (NTRS)

Device has three integral, equally spaced leaf springs. Springs separate outer vacuum jacket from fluid carrying line, yet minimize conductive heat leaks and liquid boiloff. One-piece heat spring has sufficient flexibility to accommodate differential thermal expansion of inner and outer line.

Houte, F. A.; Mckee, H. B.; Patten, T. C.

1976-01-01

29

THE JACKET LAYER IN SASSAFRAS  

Microsoft Academic Search

In the ovules of some angiosperms a definite nutritive tissue invests the embryo-sac, while in others no such layer exists. This nutritive jacket appears in all cases to be simply a modifica- tion of one or more layers of cells on the inner wall of the ovule. It is purely a physiological tissue and is usually described as consisting of

JOHN H. SCHAFFNER

30

Life Jacket Mandate Study Interim Report  

E-print Network

Life Jacket Mandate Study Interim Report 2 May 2008 #12;TABLE OF CONTENTS I. INTRODUCTION............................................................................................18 XI. LIFE JACKET STUDY PRODUCT DELIVERY TEAM (PDT) PARTICIPANTS..19 2 #12;I. INTRODUCTION. A Life 327 that would require members of the public to wear a life jacket while recreating on Corps waters

US Army Corps of Engineers

31

The Seismic Reliability of Offshore Structures Based on Nonlinear Time History Analyses  

SciTech Connect

Regarding the past earthquakes damages to offshore structures, as vital structures in the oil and gas industries, it is important that their seismic design is performed by very high reliability. Accepting the Nonlinear Time History Analyses (NLTHA) as the most reliable seismic analysis method, in this paper an offshore platform of jacket type with the height of 304 feet, having a deck of 96 feet by 94 feet, and weighing 290 million pounds has been studied. At first, some Push-Over Analyses (POA) have been preformed to recognize the more critical members of the jacket, based on the range of their plastic deformations. Then NLTHA have been performed by using the 3-components accelerograms of 100 earthquakes, covering a wide range of frequency content, and normalized to three Peak Ground Acceleration (PGA) levels of 0.3 g, 0.65 g, and 1.0 g. By using the results of NLTHA the damage and rupture probabilities of critical member have been studied to assess the reliability of the jacket structure. Regarding that different structural members of the jacket have different effects on the stability of the platform, an 'importance factor' has been considered for each critical member based on its location and orientation in the structure, and then the reliability of the whole structure has been obtained by combining the reliability of the critical members, each having its specific importance factor.

Hosseini, Mahmood [Associate Professor, Civil Engineering Department, Graduate School, Tehran South Branch of the Islamic Azad University (IAU), Jamalzadeh St., Keshsavarz Blvd, Tehran 14187 (Iran, Islamic Republic of); Karimiyani, Somayyeh [Graduate Student, Civil Engineering Department, Graduate School, Tehran South Branch of the Islamic Azad University (IAU), Jamalzadeh St., Keshsavarz Blvd, Tehran 14187 (Iran, Islamic Republic of); Ghafooripour, Amin [Assistant Professor, Civil Engineering Department, Tehran Central Branch of the Islamic Azad University (IAU), Tehran (Iran, Islamic Republic of); Jabbarzadeh, Mohammad Javad [PhD Student, Graduate Program, International Institute of Earthquake Engineering and Seismology (IIEES), P.O. Box 19395/3913, Tehran (Iran, Islamic Republic of)

2008-07-08

32

46 CFR 180.78 - Stowage of life jackets.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Stowage of life jackets. 180.78 Section 180.78 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.78 Stowage of life jackets....

2010-10-01

33

46 CFR 117.78 - Stowage of life jackets.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Stowage of life jackets. 117.78 Section 117.78 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.78 Stowage of life jackets....

2012-10-01

34

46 CFR 180.75 - Life jacket lights.  

Code of Federal Regulations, 2012 CFR

...Shipping 7 2012-10-01 2012-10-01 false Life jacket lights. 180.75 Section 180.75 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.75 Life jacket lights....

2012-10-01

35

46 CFR 180.75 - Life jacket lights.  

Code of Federal Regulations, 2011 CFR

...Shipping 7 2011-10-01 2011-10-01 false Life jacket lights. 180.75 Section 180.75 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.75 Life jacket lights....

2011-10-01

36

46 CFR 117.78 - Stowage of life jackets.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Stowage of life jackets. 117.78 Section 117.78 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.78 Stowage of life jackets....

2011-10-01

37

46 CFR 180.78 - Stowage of life jackets.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Stowage of life jackets. 180.78 Section 180.78 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.78 Stowage of life jackets....

2011-10-01

38

46 CFR 117.78 - Stowage of life jackets.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Stowage of life jackets. 117.78 Section 117.78 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.78 Stowage of life jackets....

2010-10-01

39

46 CFR 180.75 - Life jacket lights.  

Code of Federal Regulations, 2013 CFR

...Shipping 7 2013-10-01 2013-10-01 false Life jacket lights. 180.75 Section 180.75 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.75 Life jacket lights....

2013-10-01

40

46 CFR 180.78 - Stowage of life jackets.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Stowage of life jackets. 180.78 Section 180.78 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.78 Stowage of life jackets....

2012-10-01

41

46 CFR 117.78 - Stowage of life jackets.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Stowage of life jackets. 117.78 Section 117.78 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.78 Stowage of life jackets....

2013-10-01

42

46 CFR 117.75 - Life jacket lights.  

Code of Federal Regulations, 2012 CFR

...Shipping 4 2012-10-01 2012-10-01 false Life jacket lights. 117.75 Section 117.75 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.75 Life jacket lights....

2012-10-01

43

46 CFR 117.75 - Life jacket lights.  

Code of Federal Regulations, 2011 CFR

...Shipping 4 2011-10-01 2011-10-01 false Life jacket lights. 117.75 Section 117.75 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.75 Life jacket lights....

2011-10-01

44

46 CFR 117.75 - Life jacket lights.  

Code of Federal Regulations, 2010 CFR

...Shipping 4 2010-10-01 2010-10-01 false Life jacket lights. 117.75 Section 117.75 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.75 Life jacket lights....

2010-10-01

45

46 CFR 117.75 - Life jacket lights.  

Code of Federal Regulations, 2013 CFR

...Shipping 4 2013-10-01 2013-10-01 false Life jacket lights. 117.75 Section 117.75 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.75 Life jacket lights....

2013-10-01

46

46 CFR 180.75 - Life jacket lights.  

Code of Federal Regulations, 2010 CFR

...Shipping 7 2010-10-01 2010-10-01 false Life jacket lights. 180.75 Section 180.75 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.75 Life jacket lights....

2010-10-01

47

46 CFR 180.78 - Stowage of life jackets.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Stowage of life jackets. 180.78 Section 180.78 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.78 Stowage of life jackets....

2013-10-01

48

JOHN GLENN CENTER FOR SCIENCE EDUCATION JACKET  

NSDL National Science Digital Library

100% nylon, water repellent Taslan Jacket. Taffeta mesh lined jacket and sleeves, with 2 front zip pockets. Embroidered with the JOHN GLENN CENTER FOR SCIENCE EDUCATION logo. Available in Adult sizes: Small, Medium, Large, X Large, XX Large. All proceeds from the sale of this item go to fund the JOHN GLENN CENTER FOR SCIENCE EDUCATION .

1900-01-01

49

OMAE 1995 -- Proceedings of the 14. international conference on offshore mechanics and arctic engineering. Volume 1, Part B: Offshore technology  

SciTech Connect

This conference proceeding represents the second part of the volume of papers related to offshore technology as it relates to design of offshore structures, jacket and floating structures, tension leg platforms, mooring systems, risers, and cables. It also contains papers relating to structural and geotechnical mechanics. Separate abstracts were prepared for 48 papers in this report for inclusion in the information retrieval system.

Chakrabarti, S.K. [ed.] [Chicago Bridge and Iron Technical Services, Plainfield, IL (United States); Gudmestad, O.T. [ed.] [Statoil, Stavanger (Norway); Sparks, C. [ed.] [Inst. Francais du Petrole, Rueil-Malmaison (France); Morrison, D.G. [ed.] [Shell E and P Technology Co., Houston, TX (United States)

1995-12-31

50

Design of acoustical jackets for machines  

SciTech Connect

This work was carried out in cooperation with a Swedish machine manufacturer. The aim was to give design rules for acoustic jackets, an acoustic radiation shield mounted on a machine, close to its surface.

Boden, H.; Abom, M.

1982-01-01

51

Discharge lamp with reflective jacket  

DOEpatents

A discharge lamp includes an envelope, a fill which emits light when excited disposed in the envelope, a source of excitation power coupled to the fill to excite the fill and cause the fill to emit light, and a reflector disposed around the envelope and defining an opening, the reflector being configured to reflect some of the light emitted by the fill back into the fill while allowing some light to exit through the opening. The reflector may be made from a material having a similar thermal index of expansion as compared to the envelope and which is closely spaced to the envelope. The envelope material may be quartz and the reflector material may be either silica or alumina. The reflector may be formed as a jacket having a rigid structure which does not adhere to the envelope. The lamp may further include an optical clement spaced from the envelope and configured to reflect an unwanted component of light which exited the envelope back into the envelope through the opening in the reflector. Light which can be beneficially recaptured includes selected wavelength regions, a selected polarization, and selected angular components.

MacLennan, Donald A. (Gaithersburg, MD); Turner, Brian P. (Damascus, MD); Kipling, Kent (Gaithersburg, MD)

2001-01-01

52

Extending cable life with better jackets  

SciTech Connect

Better materials may result from a $1.1 million research program funded by the Electric Power Research Institute, Palo Alto, California and awarded to Southwire Co., Carrollton, Ga. The University of Connecticut`s Electrical Insulation Center (EIRC) will assist Southwire in testing the results of a recent study that found a promising new way to improve the protective jackets on underground power cables. EIRC`s Director Matthew Mashikian said, {open_quotes}Extending the life of power cables with a better jacket is worth millions to utility companies and their customers.{close_quotes} EIRC has a patent pending on a method of using chemical scavengers to reduce the presence of ions in groundwater that can penetrate a power cable`s jacket and invade the insulation.

NONE

1995-05-01

53

Shift type and season affect adaptation of the 6-sulphatoxymelatonin rhythm in offshore oil rig workers  

Microsoft Academic Search

Previously we have shown that the 6-sulphatoxymelatonin rhythm of oil rig workers on a 2-week night shift (1800–0600 h) adapts to the shift via a phase delay. We now report the findings of a study on two offshore drill crews working a 1 week day (1200–0000 h), 1 week night (0000–1200 h) swing shift. Urine samples were collected every 2–3

R. G Barnes; M. J Forbes; J Arendt

1998-01-01

54

Proceedings of the 22nd annual offshore technology conference  

SciTech Connect

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

Not Available

1990-01-01

55

Tensile test of SS 316LN jacket with different conditions  

NASA Astrophysics Data System (ADS)

316LN stainless steel is selected as a material for Toroidal-field (TF) conductor jacket of International Thermonuclear Experimental Reactor (ITER). When energized, the ITER TF coils experience large pulsed electromagnetic forces that the conductor jacket itself must withstand. The conductor will be compacted, spooled and aged at approximately 650 °C during manufacture. Therefore, the sample jackets were prepared under compaction, stretching and annealing to simulate the manufacturing process and operation of TF coils. The present Chinese TF jacket has good performance under standard conditions. In order to investigate more mechanical properties of 316LN jacket, the different cold working and annealing were applied to the raw materials. The samples were measured at 4.2 K, 77 K and 300 K. Youngs modulus, yield strength (0.2% offset), elongation at failure and SEM images are reported. There is no big deviation among different conditions. The test results show that Chinese TF jacket has good performance.

Qin, Jinggang; Dai, Chao; Liao, Guojun; Wu, Yu; Zhu, Xiaofeng; Huang, Chuanjun; Li, Laifeng; wang, Kun; Shen, Xiaogang; Tu, Zhengpin; Ji, Hui

2014-11-01

56

Insitu expanding foam based carbon/epoxy sandwich jackets for column retrofit  

E-print Network

foam core sandwich panel jacket applied to the two (2) reinforced concretefoam core sandwich panel jacket applied to each of the continuously reinforced flexure concretefoam core sandwich panel jacket applied to each of the lapped reinforced flexure concrete

Danyeur, Alicia

2008-01-01

57

JOHN GLENN CENTER FOR SCIENCE EDUCATION JACKET (Size: X Large)  

NSDL National Science Digital Library

100% nylon, water repellent Taslan Jacket. Taffeta mesh lined jacket and sleeves, with 2 front zip pockets. Embroidered with the JOHN GLENN CENTER FOR SCIENCE EDUCATION logo. Available in Adult sizes: Small, Medium, Large, X Large, XX Large. All proceeds from the sale of this item go to fund the JOHN GLENN CENTER FOR SCIENCE EDUCATION .

1900-01-01

58

JOHN GLENN CENTER FOR SCIENCE EDUCATION JACKET (Size: XX Large)  

NSDL National Science Digital Library

100% nylon, water repellent Taslan Jacket. Taffeta mesh lined jacket and sleeves, with 2 front zip pockets. Embroidered with the JOHN GLENN CENTER FOR SCIENCE EDUCATION logo. Available in Adult sizes: Small, Medium, Large, X Large, XX Large. All proceeds from the sale of this item go to fund the JOHN GLENN CENTER FOR SCIENCE EDUCATION .

1900-01-01

59

JOHN GLENN CENTER FOR SCIENCE EDUCATION JACKET (Size: Small)  

NSDL National Science Digital Library

100% nylon, water repellent Taslan Jacket. Taffeta mesh lined jacket and sleeves, with 2 front zip pockets. Embroidered with the JOHN GLENN CENTER FOR SCIENCE EDUCATION logo. Available in Adult sizes: Small, Medium, Large, X Large, XX Large. All proceeds from the sale of this item go to fund the JOHN GLENN CENTER FOR SCIENCE EDUCATION .

1900-01-01

60

JOHN GLENN CENTER FOR SCIENCE EDUCATION JACKET (Size: Large)  

NSDL National Science Digital Library

100% nylon, water repellent Taslan Jacket. Taffeta mesh lined jacket and sleeves, with 2 front zip pockets. Embroidered with the JOHN GLENN CENTER FOR SCIENCE EDUCATION logo. Available in Adult sizes: Small, Medium, Large, X Large, XX Large. All proceeds from the sale of this item go to fund the JOHN GLENN CENTER FOR SCIENCE EDUCATION .

1900-01-01

61

JOHN GLENN CENTER FOR SCIENCE EDUCATION JACKET (Size: Medium)  

NSDL National Science Digital Library

100% nylon, water repellent Taslan Jacket. Taffeta mesh lined jacket and sleeves, with 2 front zip pockets. Embroidered with the JOHN GLENN CENTER FOR SCIENCE EDUCATION logo. Available in Adult sizes: Small, Medium, Large, X Large, XX Large. All proceeds from the sale of this item go to fund the JOHN GLENN CENTER FOR SCIENCE EDUCATION .

1900-01-01

62

Smart Jacket Design for Neonatal Monitoring with Wearable Sensors  

Microsoft Academic Search

Critically ill new born babies admitted at the Neonatal Intensive Care Unit (NICU) are extremely tiny and vulnerable to external disturbance. Smart Jacket proposed in this paper is the vision of a wearable unobtrusive continuous monitoring system realized by body sensor networks (BSN) and wireless communication. The smart jacket aims for providing reliable health monitoring as well as a comfortable

Sibrecht Bouwstra; Wei Chen; Loe M. G. Feijs; Sidarto Bambang-oetomo

2009-01-01

63

Use of the air-inflated jacket in football  

Microsoft Academic Search

Injuries to the rib cage are common in football, but little has been done to protect this area. This paper discusses the effectiveness and usefulness of a pro tective jacket in football. The jacket is highly durable, constructed of urethane-coated nylon, and heat- sealed to take on the shape of several cylinders inter connected by fabric valves which constrict in

Thomas E. Cain; Byron Donzis; Jerry Meins

1981-01-01

64

Ported jacket for use in deformation measurement apparatus  

DOEpatents

A device for allowing deformation measurement of a jacketed specimen when the specimen is loaded includes an elastomeric specimen container or jacket surrounding a specimen while the specimen is being loaded by a test apparatus. The specimen jacket wall is compressible, and the wall follows and allows deformation of the specimen. The jacket wall of compressible material is provided with at least one opening and a thin layer or shim of substantially non-compressible (metal) material which covers and seals this opening. An extensometer is then positioned with its specimen engaging contact members engaging the substantially non-compressible material to measure the deformation of the specimen when the specimen is loaded, without compressibility effects of the jacket. 9 figs.

Wagner, L.A.; Senseny, P.E.; Mellegard, K.D.; Olsberg, S.B.

1990-03-06

65

Ported jacket for use in deformation measurement apparatus  

DOEpatents

A device for allowing deformation measurement of a jacketed specimen when the specimen is loaded includes an elastomeric specimen container or jacket surrounding a specimen while the specimen is being loaded by a test apparatus. The specimen jacket wall is compressible, and the wall follows and allows deformation of the specimen. The jacket wall of compressible material is provided with at least one opening and a thin layer or shim of substantially non-compressible (metal) material covers and seals this opening. An extensometer is then positioned with its specimen engaging contact members engaging the substantially non-compressible material to measure the deformation of the specimen when the specimen is loaded, without compressibility effects of the jacket.

Wagner, Leslie A. (Rapid City, SD); Senseny, Paul E. (Rapid City, SD); Mellegard, Kirby D. (Rapid City, SD); Olsberg, Steven B. (Rapid City, SD)

1990-01-01

66

Offshore structures  

SciTech Connect

This monograph provides a comprehensive coverage of the engineering concepts and design of offshore structures for the exploration for and production of offshore oil. Although offshore structural engineering is a relatively new field, the literature contains thousands of papers and a few books addressing various aspects of the discipline. The purpose of this treatise is to offer a general conspectus and a state-of-the-art picture, with emphasis on pragmatic engineering applications, to all those associated with offshore structural design, research, and development.

Reddy, D.V.; Arockiasamy, M. (Florida Atlantic Univ., Boca Raton, FL (United States))

1991-01-01

67

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.

68

Lightweight Vacuum Jacket for Cryogenic Insulation. Volume 1  

NASA Technical Reports Server (NTRS)

The feasibility of producing a lightweight vacuum jacket using state-of-the-art technology and materials was examined. Design and analytical studies were made on a full-scale, orbital maneuvering system fuel tank. Preliminary design details were made for the tank assembly, including an optimized vacuum jacket and multilayer insulation system. A half-scale LH2 test model was designed and fabricated, and a force/stiffness proof test was conducted on the vacuum jacket. A vacuum leak rate of .000001 atmosphere ml of helium per second was measured, approximately 1500 hours of vacuum pressure were sustained, and 29 vacuum-pressure cycles were experienced prior to failure.

Barclay, D. L.; Bell, J. E.; Brogren, E. W.; Straayer, J. W.

1975-01-01

69

Optical fiber magnetic field sensors with ceramic magnetostrictive jackets.  

PubMed

Optical fibers coated by magnetostrictive ceramic films were tested with a Mach-Zehnder interferometer in an open-loop mode. The sensors exhibited excellent linearity and good sensitivity. The response of ceramic-jacketed fibers was not affected by small dc fluctuations that are due to the linear behavior of tested ceramic coatings in low magnetic fields. Tested ceramic materials included magnetite, ?-Fe(2) O(3), nickel ferrite, and cobalt-doped nickel ferrite (NCF2) jackets. The latter showed the best performance. A minimum detectable field of 3.2 × 10(-3) A/m for optical fiber jacketed with 2-?m-thick and 1-m-long NCF2 material has been achieved. The capability of detecting magnetic fields as low as 2.6 × 10(-7) A/m with a 10-?m-thick cobalt-doped nickel ferrite jacket is proposed. PMID:21127528

Sedlar, M; Paulicka, I; Sayer, M

1996-09-20

70

Turbulator for a liner cooling jacket  

NASA Technical Reports Server (NTRS)

A turbulator for a liner cooling jacket includes a metal panel which is suitable to be coiled into a generally cylindrical shape so as to be placed in a relief area between an engine cylinder block and a cylinder liner. The relief area may be machined into either the block or the cylinder liner and the metal panel is formed with a pattern of protuberances shaped like corrugations. In one embodiment, the corrugations have a shape similar to a sine wave and are arranged in a plurality of generally parallel axial segments. The corrugation wave pattern of one segment may be the same as its adjacent segment or may be staggered by one corrugation which would mean one-half of a full wave cycle. The corrugation pattern in the turbulator panel may be created by any one of various stamping or forming operations and when placed between the cylinder liner and block, increases turbulence of the cooling liquid in order to enhance heat transfer.

Hoag, Kevin L. (Inventor)

1995-01-01

71

Calibration and Validation of a Spar-Type Floating Offshore Wind Turbine Model using the FAST Dynamic Simulation Tool: Preprint  

SciTech Connect

In 2007, the FAST wind turbine simulation tool, developed and maintained by the U.S. Department of Energy's (DOE's) National Renewable Energy Laboratory (NREL), was expanded to include capabilities that are suitable for modeling floating offshore wind turbines. In an effort to validate FAST and other offshore wind energy modeling tools, DOE funded the DeepCwind project that tested three prototype floating wind turbines at 1/50th scale in a wave basin, including a semisubmersible, a tension-leg platform, and a spar buoy. This paper describes the use of the results of the spar wave basin tests to calibrate and validate the FAST offshore floating simulation tool, and presents some initial results of simulated dynamic responses of the spar to several combinations of wind and sea states.

Browning, J. R.; Jonkman, J.; Robertson, A.; Goupee, A. J.

2012-11-01

72

46 CFR 180.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2013 CFR

... Personal flotation devices carried in addition to life jackets. 180.72 Section 180.72 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.72 Personal flotation devices...

2013-10-01

73

46 CFR 180.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2010 CFR

... Personal flotation devices carried in addition to life jackets. 180.72 Section 180.72 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.72 Personal flotation devices...

2010-10-01

74

46 CFR 117.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2010 CFR

... Personal flotation devices carried in addition to life jackets. 117.72 Section 117.72 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.72 Personal flotation devices...

2010-10-01

75

46 CFR 117.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2011 CFR

... Personal flotation devices carried in addition to life jackets. 117.72 Section 117.72 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.72 Personal flotation devices...

2011-10-01

76

46 CFR 180.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2012 CFR

... Personal flotation devices carried in addition to life jackets. 180.72 Section 180.72 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.72 Personal flotation devices...

2012-10-01

77

46 CFR 117.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2013 CFR

... Personal flotation devices carried in addition to life jackets. 117.72 Section 117.72 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.72 Personal flotation devices...

2013-10-01

78

46 CFR 117.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2012 CFR

... Personal flotation devices carried in addition to life jackets. 117.72 Section 117.72 Shipping...PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 117.72 Personal flotation devices...

2012-10-01

79

46 CFR 180.72 - Personal flotation devices carried in addition to life jackets.  

Code of Federal Regulations, 2011 CFR

... Personal flotation devices carried in addition to life jackets. 180.72 Section 180.72 Shipping...TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Ring Life Buoys and Life Jackets § 180.72 Personal flotation devices...

2011-10-01

80

Development, analysis and design of a 292 ft tall self-erecting flare tower for offshore application  

SciTech Connect

This paper describes the development of a 292 ft tall flare tower applicable for large offshore production facilities. First of its kind in a flare tower design, an innovative but well proven self-erecting technique is used. The technique aimed eliminating the transportation and erection costs. The structural concept is known as Self-Erecting Flare Tower (SEFT). In SEFT concept, the tower is segmented into a number of small manageable sections. A jacket type bottom section is used to support telescoping the tower sections. The design erection procedure, technical and functional feasibility of SEFT concept are discussed. At the end of this paper, a cost comparison study with conventional flare tower is given.

Desai, V.; Srinivasan, N. [Dreco, Houston, TX (United States)

1995-12-31

81

Red Jacket and the Decolonization of Republican Virtue  

ERIC Educational Resources Information Center

History has not always been kind to Sagoyewatha, or, as he is more commonly known, Red Jacket. One of the most eloquent spokesmen for Native sovereignty in the early national period, Sagoyewatha was nonetheless accused by his peers of cowardice, alcoholism, and egotism. Fortunately, this picture is beginning to change. Christopher Densmore's…

Ganter, Granville

2007-01-01

82

Welding vacuum jacketed piping at the Kennedy Space Center  

NASA Technical Reports Server (NTRS)

The present work describes fabrication, welding, and repair procedures and specifications for the vacuum jacketed piping used for conveying cryogenic fuels at space vehicle launch sites. The weld inspection procedures are described, and some examples of modifications of the piping are presented.

Clautice, W. E.

1975-01-01

83

Discrimination of bullet types using analysis of lead isotopes deposited in gunshot entry wounds.  

PubMed

In order to discriminate bullet types used in firearms, of which the victims died, the authors investigated lead isotope ratios in gunshot entry wounds from nine lead (unjacketed) bullets, 15 semi-jacketed bullets, and 14 full-jacketed bullets by inductively coupled plasma-mass spectrometry. It was found that the lead isotope ratio of 207/206 in gunshot entry wounds was the highest with lead bullets, and it decreased in order from full-jacketed to semi-jacketed bullets. Lead isotope ratios of 208/206 or 208/207 to 207/206 at the gunshot entry wound were able to discriminate semi-jacketed bullets from lead and full-jacketed ones, but it was difficult to discriminate between lead and full-jacketed bullets. However, a combination of element and lead isotope ratio analyses in gunshot entry wounds enabled discrimination between lead, semi-jacketed, and full-jacketed bullets. PMID:19129983

Wunnapuk, Klintean; Minami, Takeshi; Durongkadech, Piya; Tohno, Setsuko; Ruangyuttikarn, Werawan; Moriwake, Yumi; Vichairat, Karnda; Sribanditmongkol, Pongruk; Tohno, Yoshiyuki

2009-01-01

84

Method of preventing leakage of a fluid along and through an insulating jacket of a thermocouple  

DOEpatents

A thermocouple assembly includes a thermocouple; a plurality of lead wires extending from the thermocouple; an insulating jacket extending along and enclosing the plurality of leads; and at least one internally sealed area within the insulating jacket to prevent fluid leakage along and within the insulating jacket. The invention also provides a method of preventing leakage of a fluid along and through an insulating jacket of a thermocouple including the steps of a) attaching a plurality of lead wires to a thermocouple; b) adding a heat sensitive pseudo-wire to extend along the plurality of lead wires; c) enclosing the lead wires and pseudo-wire inside an insulating jacket; d) locally heating axially spaced portions of the insulating jacket to a temperature which melts the pseudo-wire and fuses it with an interior surface of the jacket.

Thermos, Anthony Constantine (Greer, SC); Rahal, Fadi Elias (Easley, SC)

2002-01-01

85

Optimal startup control of a jacketed tubular reactor.  

NASA Technical Reports Server (NTRS)

The optimal startup policy of a jacketed tubular reactor, in which a first-order, reversible, exothermic reaction takes place, is presented. A distributed maximum principle is presented for determining weak necessary conditions for optimality of a diffusional distributed parameter system. A numerical technique is developed for practical implementation of the distributed maximum principle. This involves the sequential solution of the state and adjoint equations, in conjunction with a functional gradient technique for iteratively improving the control function.

Hahn, D. R.; Fan, L. T.; Hwang, C. L.

1971-01-01

86

Changing life jacket wearing behavior: an evaluation of two approaches.  

PubMed

In the United States during 1999-2012, about 4 per cent of adults wore life jackets while engaged in recreation on powerboats. Educational campaigns have promoted life jacket use. Mandatory use regulations target primarily children or boaters on personal watercrafts or water skiing. We describe findings from two interventions - 'Wear It California!', a targeted marketing campaign in the California Delta region and mandatory wear regulations at four US Army Corps of Engineers (USACE) lakes in the state of Mississippi. Before the campaign in the Delta, adult wear was 8.5 per cent, increasing to 12.1 per cent during the first year, dipping to 9.4 per cent during the second year, and rising slightly to 10.5 per cent 3 plus years after the campaign. Before mandatory regulations at USACE lakes, adult wear was 13.7 per cent, increasing to 75.6 per cent during the first year, 70.1 per cent during the second year, and remaining high at 68.1 per cent in the third year. Policymakers should consider these findings when choosing how to increase life jacket use. PMID:24430805

Mangione, Thomas; Chow, Wendy

2014-05-01

87

Judging a movie by its cover: A content analysis of sexual portrayals on video rental jackets  

Microsoft Academic Search

A content analysis of video rental jackets was conducted to examine the prevalence and nature of sexual portrayals. While\\u000a sexuality in the general photo themes and written descriptions (teasers) on the jackets was relatively uncommon, attractive\\u000a characters and characters in sexy clothing and with skin exposed were more frequently observed. Female characters on the jackets\\u000a were more likely than male

Mary Beth Oliver; Omotayo Banjo; Jinhee Kim

2003-01-01

88

Domestic Options to Offshore Oil and Gas.  

ERIC Educational Resources Information Center

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

Kash, Don E.

1983-01-01

89

Research on smart control tests of ice-induced vibration control of offshore platform  

Microsoft Academic Search

This paper proposes a smart control system to reduce ice-induced motions in the offshore jacket platform structure subjected to ice-induced vibration. Magnetorheological (MR) dampers are applied as smart control devices and the control input determination is based on a clipped-optimal control algorithm which uses absolute displacement and acceleration feedback. The performance of this method is studied experimentally by means of

Jigang Zhang; Bin Wu

2010-01-01

90

MusicJacket -Combining Motion Capture and Vibrotactile Feedback to Teach Violin Bowing  

E-print Network

1 MusicJacket - Combining Motion Capture and Vibrotactile Feedback to Teach Violin Bowing Janet van--We describe MusicJacket, a wearable system to support the teaching of good posture and bowing technique group who only received conventional teaching. We found that vibrotactile feedback is effective

91

THE MAN’S JACKET DESIGN FOR DISASSEMBLY: AN IMPLEMENTATION OF C2CAD FRAMEWORK  

EPA Science Inventory

The C2CAD model served as the basis in the man’s jacket design and production. In man’s jackets, both natural and synthetic materials are commonly used for fabrics, threads, and buttons. To promote disassembly and value retention, we minimized material diversity an...

92

Pore Type Classification on Carbonate Reservoir in Offshore Sarawak using Rock Physics Model and Rock Digital Images  

NASA Astrophysics Data System (ADS)

It has been recognized that carbonate reservoirs are one of the biggest sources of hydrocarbon. Clearly, the evaluation of these reservoirs is important and critical. For rigorous reservoir characterization and performance prediction from geophysical measurements, the exact interpretation of geophysical response of different carbonate pore types is crucial. Yet, the characterization of carbonate reservoir rocks is difficult due to their complex pore systems. The significant diagenesis process and complex depositional environment makes pore systems in carbonates far more complicated than in clastics. Therefore, it is difficult to establish rock physics model for carbonate rock type. In this paper, we evaluate the possible rock physics model of 20 core plugs of a Miocene carbonate platform in Central Luconia, Sarawak. The published laboratory data of this area were used as an input to create the carbonate rock physics models. The elastic properties were analyzed to examine the validity of an existing analytical carbonate rock physics model. We integrate the Xu-Payne Differential Effective Medium (DEM) Model and the elastic modulus which was simulated from a digital carbonate rock image using Finite Element Modeling. The results of this integration matched well for the separation of carbonate pore types and sonic P-wave velocity obtained from laboratory measurement. Thus, the results of this study show that the integration of rock digital image and theoretical rock physics might improve the elastic properties prediction and useful for more advance geophysical techniques (e.g. Seismic Inversion) of carbonate reservoir in Sarawak.

Lubis, L. A.; Harith, Z. Z. T.

2014-03-01

93

High-level GPU computing with jacket for MATLAB and C/C++  

NASA Astrophysics Data System (ADS)

We describe a software platform for the rapid development of general purpose GPU (GPGPU) computing applications within the MATLAB computing environment, C, and C++: Jacket. Jacket provides thousands of GPU-tuned function syntaxes within MATLAB, C, and C++, including linear algebra, convolutions, reductions, and FFTs as well as signal, image, statistics, and graphics libraries. Additionally, Jacket includes a compiler that translates MATLAB and C++ code to CUDA PTX assembly and OpenGL shaders on demand at runtime. A facility is also included to compile a domain specific version of the MATLAB language to CUDA assembly at build time. Jacket includes the first parallel GPU FOR-loop construction and the first profiler for comparative analysis of CPU and GPU execution times. Jacket provides full GPU compute capability on CUDA hardware and limited, image processing focused compute on OpenGL/ES (2.0 and up) devices for mobile and embedded applications.

Pryor, Gallagher; Lucey, Brett; Maddipatla, Sandeep; McClanahan, Chris; Melonakos, John; Venugopalakrishnan, Vishwanath; Patel, Krunal; Yalamanchili, Pavan; Malcolm, James

2011-06-01

94

Problems in offshore measurement  

SciTech Connect

Problems associated with offshore measurement are discussed here. There is no substitute for the human element on offshore platforms. Most problems in offshore measurement do have solutions. The sooner the problem is recognized and corrected can depend on how frequently a station can be visited. Advanced planning, good design, safe work practices and a realistic approach are the only solutions to offshore measurement problems. Good work practices, with well trained personnel can avert many problems and offer smooth safe operations.

Bitterly, D.G.

1984-04-01

95

Types of potential effects of offshore oil and gas development on marine mammals and endangered species of the northern Bering Sea and Arctic Ocean. Technical paper no. 9 (final)  

SciTech Connect

The report summarizes information on the types of potential effects on marine mammals, endangered species, and rare plants which may be associated with oil and gas lease sales pending for the northern Bering Sea and arctic regions. The discussion does not imply that any specific level of impact will be sustained but rather identifies the various potential effects associated with offshore exploration, development, and production of petroleum hydrocarbon resources in the Alaska arctic regions.

Cowles, C.J.; Hansen, D.J.; Hubbard, J.D.

1981-12-01

96

The indirect transfer of glass fragments to a jacket and their subsequent persistence.  

PubMed

Experiments were conducted to investigate a scenario sometimes encountered in casework, where a police officer has attended a scene and shortly afterwards arrested a suspect. The experiments involve the transfer of glass fragments from a surface scattered with broken glass to a hand, and then from the hand to the sleeve of a poorly retaining jacket. The persistence of the transferred fragments was studied by collecting the glass fragments as they fell off the jacket, whilst the wearer was walking on the spot. The recovery regime allowed the number and proportion of fragments picked up and transferred to the jacket from the hand to be determined, and the rate at which they were lost from the jacket to be monitored. The results show that large numbers of glass fragments can be picked up on a hand from a suitable surface. A subsequent firm grip to a poorly retaining jacket was found to transfer a significant proportion of the glass fragments from the hand to the jacket. In seven of nine tests performed, ten or more glass fragments were recovered from the jacket 60 minutes after the original contact between the hand and the broken glass. More than twenty fragments were recovered in three of these tests. Consequently, where possible and appropriate, the full circumstances of a case should be considered carefully before indirect transfer is ruled out as a possible explanation for recovered "matching" glass. This is the case even for poorly retaining clothing. PMID:23601724

Cooper, Guy

2013-06-01

97

Infrared detector Dewars - Increased LN2 hold time and vacuum jacket life spans  

NASA Technical Reports Server (NTRS)

IR detector Dewars commonly suffer from shorter than desired LN2 hold times and insulation jacket vacuum corruption over relatively short time periods. In an attempt to solve this problem for a 9144 detector Dewar, small 1 liter/s appendage ion pumps were selected for continuous pumping of the vacuum jackets. This procedure extended LN2 hold times from 20 to 60 h and virtually eliminated vacuum jacket corruption. Thus the detector systems are usable continuously over periods of 6 months or more.

Jennings, D. E.; Boyd, W. J.; Blass, W. E.

1976-01-01

98

Lightweight Vacuum Jacket for Cryogenic Insulation - Appendices to Final Report. Volume 2  

NASA Technical Reports Server (NTRS)

The feasibility is demonstrated of producing a lightweight vacuum jacket using state-of-the-art technology and materials. Design and analytical studies were made on an orbital maneuvering system fuel tank. Preliminary design details were completed for the tank assembly which included an optimized vacuum jacket and multilayered insulation system. A half-scale LH2 test model was designed and fabricated and a force/stiffness proof test was conducted on the vacuum jacket. A vacuum leak rate of 0.00001 was measured, approximately 1500 hours of vacuum pressure was sustained, and 29 vacuum pressure cycles were experienced prior to failure. For vol. 1, see N75-26192.

Barclay, D. L.; Bell, J. E.; Brogren, E. W.; Straayer, J. W.

1975-01-01

99

Evaluation of sleeve-pile set models used in docking jacket operation simulation  

SciTech Connect

This work deals with the behavior of sleeve-pile set models used in the simulation of docking jacket operations. The adopted strategy involves the comparison of three-dimensional dynamic analysis with complete models, where docking pile and marine soil are considered. This dynamic analysis is performed in the time domain, including all the environmental loads and ship motions, using a substructure technique. The main discussion is focused in appropriate modeling the sleeve-pile set. Two propositions were examined: in the first one, the nonlinear docking spring takes into account the sleeve, pile and nonlinear soil contributions; in the second, the docking sleeve characteristics were added to the jacket model. To reach the objectives a real docking operation case was selected. A typical Campos Basin jacket was modeled with fine discretization of all details to access precisely the sleeve-pile set interaction. The obtained results can establish practical conclusions to docking jacket analysis.

Cyranka, C.; Mourelle, M.M. [Petrobras R and D Center, Rio de Janeiro (Brazil); Ebecken, N.F.F. [Federal Univ. of Rio de Janeiro (Brazil)

1995-12-31

100

A Simple, Inexpensive Water-Jacketed Cuvette for the Spectronic 20  

ERIC Educational Resources Information Center

The construction of a simple and inexpensive water-jacketed cuvette for the Spectronic 20 is described. This cuvette is utilized to determine the activation energy of the reaction between crystal violet and hydroxide ion spectrophotomerically.

Thompson, Jonathan E.; Ting, Jason

2004-01-01

101

Experimental Investigation on Thermal Properties of a Steel-jacketed Steam Heating Pipeline with Vacuum Insulation  

E-print Network

The steel-jacketed steam heating pipeline employs vacuum insulation to improve the insulating effect and reduce the corrosion, and hence increases the heat transfer efficiency of the heating network and building energy efficiency. It is important...

Na, W.; Zou, P.

2006-01-01

102

Skin, bone and muscle collagen extraction from the trash fish, leather jacket (Odonus niger) and their characterization.  

PubMed

Acid soluble (ASC) and pepsin soluble (PSC) collagens were extracted from the skin, bone and muscle of a trash fish, leather jacket (Odonus niger) by three different extraction methods. Method I gave 46-50% yield for ASC, Method II gave 49-58% yield for both ASC and PSC and Method III gave 64-71% yield for PSC. The addition of pepsin had increased the yield by 30-45%. The yields of collagen from skin and bone were higher than muscle. SDS-PAGE pattern revealed that skin and bone collagen as Type I collagen with a typical (?1)2?2 chains and muscle collagen as Type V collagen with a typical ?1?3?2 chains. Td values of bone and muscle collagen were high (30-32 °C) compared to skin collagen (27-28 °C). The higher imino acids (190 residues/1,000 residues) were found responsible for the higher Td values. The trash fish, leather jacket can therefore be exploited effectively for collagen as it has got good thermal properties for pharmaceutical and biomedical applications. PMID:24426022

Muralidharan, Nagarajan; Jeya Shakila, Robinson; Sukumar, Durairaj; Jeyasekaran, G

2013-12-01

103

Classification of offshore mass movements  

SciTech Connect

More than 100 offshore mass-movement deposits have been studied in Holocene and Pleistocene sediments. The processes can be divided into three main types: slides/slumps, plastic flows, and turbidity currents, of which 13 main varieties have been recognized. The three types are differentiated mainly by motion, architecture, and shape of failure surface. For slides, the morphology of deposits can usually be linked to a process, but for plastic flows and turbidity currents, information about the motion is mainly provided by the sedimentary record. A static classification based on these features is given, and is related to a dynamic classification system to try to underline the morphological transformation of an offshore event from initiation to deposition.

Mulder, T. [Inst. Francais de Recherches pour l`Exploitation de la Mer, Plouzane (France). Dept. de Geosciences Marines]|[Ecole Nationale Superieure de Geologie, Vandeuvre-les-Nancy (France). Lab. de Geomecanique; Cochonat, P. [Inst. Francais de Recherches pour l`Exploitation de la Mer, Plouzane (France). Dept. de Geosciences Marines

1996-01-01

104

Evaluation of the Use of Primate Undershirts as a Refinement Practice for Jacketed Rhesus Macaques (Macaca mulatta)  

PubMed Central

Jacketing of nonhuman primates (NHP) is a commonly used practice in the laboratory animal setting to support data collection with reduced direct human-to-animal interaction. NHP often wear jackets for several weeks, potentially leading to the formation of dermal lesions ranging from mild alopecia to severe full-thickness ulceration. We sought to evaluate the addition of a commercially available undershirt for primates as a possible refinement practice for our jacketed rhesus macaques. In this study, we compared the lesion count, location, and severity and differences in rectal body temperature between jacketed NHP with undershirts with those wearing the jackets alone. In both groups, most lesions (75%) were located at either the underarm or shoulder. The percentages of total lesions in the back and neck were lower in jacketed NHP that wore undershirts than in those that did not. In addition, the estimated odds of increased severity scores in jacketed NHP without undershirts was 1.80 times that for NHP that wore both jackets and undershirts. Both groups of NHP showed a significant decrease in dermal scores with time, indicating adaptation to the jackets with or without undershirts. However, there was no statistically significant decrease in lesion count, severity, or location in jacketed NHP that wore undershirts compared with those that did not. PMID:24827568

Carlson, Amy; Kern, Steven J; Field, Amy; Marko, Shannon; Bailey, Emily; Norris, Sarah; Honko, Anna; Rico, Pedro

2014-01-01

105

Offshore wind energy prospects  

Microsoft Academic Search

In last two years offshore wind energy is becoming a focal point of national and non national organizations particularly after the limitations of fossil fuel consumption, adopted by many developed countries after Kyoto conference at the end of 1997 on global climate change. North Europe is particularly interested in offshore for the limited land areas still available, due to the

Gaetano Gaudiosi

1999-01-01

106

Structure of Offshore Flow  

Microsoft Academic Search

The horizontal and vertical structure of the mean flow and turbulent fluxes are examined using aircraft observations taken near a barrier island on the east coast of the United States during offshore flow periods. The spatial structure is strongly influenced by the surface roughness and surface temperature discontinuities at the coast. With offshore flow of warm air over cool water,

Dean Vickers; L. Mahrt; Jielun Sun; Tim Crawford

2001-01-01

107

Drag Measurements of a Protruding .50-caliber Machine Gun with Barrel Jacket Removed  

NASA Technical Reports Server (NTRS)

Tests were made in 8-ft high-speed wind tunnel to determine the drag reduction possible by eliminating the barrel jacket of a protruding 50-caliber aircraft gun. It was found that the drag of a standard aircraft gun protruding into the air stream at right angles to the flow can be reduced by 23% by discarding the barrel jacket. At 300 mph and sea-level conditions, this amounts to a decrease in drag of from 83 to 64 pounds. A rough surface finish on the barrel was found to have no adverse effects on the drag of the barrel, the drag being actually less at high Mach Numbers.

Luoma, Arvo A.

1943-01-01

108

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

109

R & D on Offshore Wind Power Generation System in Japan  

NASA Astrophysics Data System (ADS)

Offshore wind energy has been widely exploited in Europe. Having a long coastline, the offshore wind energy will be the one of the important solutions for the increase of renewable energy in Japan. However, due to the difference in wind and marine condition between Japan and Europe, the safety, the environmental impact and the economical feasibility of the offshore wind power generation system have to be investigated in Japan. According to the data observed offshore, the wind speed is enough higher than that on land and the wind energy is economically feasible. In order to utilize the energy, the design method of the foundation against very high waves in typhoon storm should be established. For shallow offshore coastal area, gravity foundation type has been improved by hydraulic experiment. Additionally, for deeper ocean, floating types such as semi-submersible float and spar-buoy have been researched.

Oishi, Kazuhito; Fukumoto, Yukinari

110

Behaviour of FRP-jacketed circular steel tubes and cylindrical shells under axial compression  

Microsoft Academic Search

Fibre-reinforced polymer (FRP) jackets have been widely used to confine reinforced concrete (RC) columns for enhancement in both strength and ductility. This paper presents the results of a recent study in which the benefit of FRP confinement of hollow steel tubes was explored. Axial compression tests on FRP-confined steel tubes are first described. Finite element modelling of these tests is

J. G. Teng; Y. M. Hu

2007-01-01

111

Arikan and Alamouti matrices based on fast block-wise inverse Jacket transform  

NASA Astrophysics Data System (ADS)

Recently, Lee and Hou (IEEE Signal Process Lett 13: 461-464, 2006) proposed one-dimensional and two-dimensional fast algorithms for block-wise inverse Jacket transforms (BIJTs). Their BIJTs are not real inverse Jacket transforms from mathematical point of view because their inverses do not satisfy the usual condition, i.e., the multiplication of a matrix with its inverse matrix is not equal to the identity matrix. Therefore, we mathematically propose a fast block-wise inverse Jacket transform of orders N = 2 k , 3 k , 5 k , and 6 k , where k is a positive integer. Based on the Kronecker product of the successive lower order Jacket matrices and the basis matrix, the fast algorithms for realizing these transforms are obtained. Due to the simple inverse and fast algorithms of Arikan polar binary and Alamouti multiple-input multiple-output (MIMO) non-binary matrices, which are obtained from BIJTs, they can be applied in areas such as 3GPP physical layer for ultra mobile broadband permutation matrices design, first-order q-ary Reed-Muller code design, diagonal channel design, diagonal subchannel decompose for interference alignment, and 4G MIMO long-term evolution Alamouti precoding design.

Lee, Moon Ho; Khan, Md Hashem Ali; Kim, Kyeong Jin

2013-12-01

112

Robust controller design for temperature tracking problems in jacketed batch reactors  

E-print Network

Robust controller design for temperature tracking problems in jacketed batch reactors Vishak for temperature tracking problems in batch reactors in the presence of parametric uncertainty. The controller has tracking 1. Introduction Batch reactors are frequently used in the production of ®ne chemicals. The batch

Palanki, Srinivas

113

Recombinant phospholipase A1 (Ves v 1) from yellow jacket venom for improved diagnosis of hymenoptera venom hypersensitivity  

PubMed Central

Background Hymenoptera venoms are known to cause life-threatening IgE-mediated anaphylactic reactions in allergic individuals. Proper diagnosis of hymenoptera venom allergy using venom extracts is severely affected by molecular cross-reactivities. Although non-glycosylated marker allergens would facilitate the identification of the culprit venom, the major allergen phospholipase A1 (Ves v 1) from yellow jacket venom (YJV) remained unavailable so far. Methods Expression of Ves v 1 as wild type and enzymatically inactivated mutant and Ves v 5 in insect cells yielded soluble proteins that were purified via affinity chromatography. Functionality of the recombinant allergens was assessed by enzymatic and biophysical analyses as well as basophil activation tests. Diagnostic relevance was addressed by ELISA-based analyses of sera of YJV-sensitized patients. Results Both major allergens Ves v 1 and Ves v 5 could be produced in insect cells in secreted soluble form. The recombinant proteins exhibited their particular biochemical and functional characteristics and were capable for activation of human basophils. Assessment of IgE reactivity of sera of YJV-sensitized and double-sensitized patients emphasised the relevance of Ves v 1 in hymenoptera venom allergy. In contrast to the use of singular molecules the combined use of both molecules enabled a reliable assignment of sensitisation to YJV for more than 90% of double-sensitised patients. Conclusions The recombinant availability of Ves v 1 from yellow jacket venom will contribute to a more detailed understanding of the molecular and allergological mechanisms of insect venoms and may provide a valuable tool for diagnostic and therapeutic approaches in hymenoptera venom allergy. PMID:20359368

2010-01-01

114

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

115

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

116

Current and future offshore activities in Canada  

SciTech Connect

The development of innovative exploratory drilling systems for Canada's harsh Arctic offshore areas over the past decade is described. Future activity in these areas, including possible production concepts, is also discussed. The results of the experience in Canadian waters can be applied in other Arctic areas of the world including offshore Alaska. This operating experience will serve to further advance the drilling technology and will serve as a basis for the design of Arctic offshore production and transportation systems. Artificial islands, first commenced in 1972, are still being constructed but with improved designs and equipment. A step forward has been the use of subsea berms on which concrete or steel segmented caissons have been placed. Integrated-type steel caissons have also been adapted for placement on subsea berms, one of which is half of a crude oil tanker and a second, a purpose-built steel caisson to be placed this summer.

Hnatiuk, J.

1984-05-01

117

Offshore Wind Geoff Sharples  

E-print Network

energy capture · Get to beYer resource · Reduce opera?ons cost · Increase turbine the blades bigger? · How big will turbines get? #12;Offshore Resource is Good #12 risk averse U?li?es are risk averse Human customers demand cheap

Kammen, Daniel M.

118

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

119

Offshore Renewable Energy Solutions  

E-print Network

and maximising energy extraction. Offshore understanding Our long track record working with the oil and gas and fisheries data. We also work collaboratively, with cross-cutting project teams, innovators in the supply chain and a range of international academic and industry players. Trusted advisors As scientific

120

The state of offshore  

SciTech Connect

In this book, the author explains the factors behind state involvement in offshore petroleum activities. From his analysis of government workings in Great Britain and Norway, he concludes that state intervention is determined by complex interactions among government officials, economic interests, and environmental pressures.

Nelson, B.F.

1991-01-01

121

Offshore space center (offshore launch site)  

SciTech Connect

Any activity requiring the development of the HLLV can benefit by operations from an offshore space center (OSC) since operating near the equator provides a twenty percent increase in payload in an ecliptic plan orbit. Some OSC concepts considered include a moored floating (semisubmersible) design, a stationary design supported by fixed piles, and a combination of these two. The facility supports: a 15,000 foot long, 300 foot wide runway, designed to accommodate a two staged winged launch vehicle, with a one million pound payload capacity to low earth orbit, an industrial area for HLLV maintenance, an airport terminal, control and operation center, and observation tower, liquid hydrogen and liquid oxygen production and storage, and fuel storage platforms, a power generation station, docks with an unloading area, two separate launch sites, and living accommodations for 10,000 people. Potential sites include the Paramount Seamount in the Pacific Ocean off the north coast of South America. Cost estimates are considered.

Harvey, D.G.

1980-07-01

122

Offshore Wind Research (Fact Sheet)  

SciTech Connect

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

Not Available

2011-10-01

123

The Teaching Artist in New Jersey: Full Metaphor Jacket  

ERIC Educational Resources Information Center

In this article, the author relates how his friends do not understand the type of work that he does as a poetry teacher. His friends know him as someone who cheers on the Yankees voraciously with them and will roll his sleeves up and stuff three knockwurst sandwiches down his throat, trying to explain how Walt Whitman would approve of this, that…

Ward, B. J.

2005-01-01

124

Differences in the element contents between gunshot entry wounds with full-jacketed bullet and lead bullet.  

PubMed

To elucidate characteristics of gunshot residues in gunshot entry wounds with full-jacketed and lead bullets, element contents in entry gunshot wounds and control skins were analyzed by inductively coupled plasma-atomic emission spectrometry (ICP-AES). It was found that a high content of Fe and Zn was deposited in the gunshot entry wounds with full-jacketed bullet, whereas a high content of Pb was deposited in the gunshot entry wounds with lead (unjacked) bullet. It should be noted that the content of Pb was significantly higher in the gunshot entry wounds with lead bullet than in those with full-jacketed bullet. Regarding the relationships among elements, it was found that there were significant direct correlations between Pb and either Sb or Ba contents in both gunshot entry wounds with full-jacketed and lead bullets. As Pb increased in both gunshot entry wounds, Sb and Ba also increased in the wounds. PMID:17916957

Wunnapuk, Klintean; Durongkadech, Piya; Minami, Takeshi; Ruangyuttikarn, Werawan; Tohno, Setsuko; Vichairat, Karnda; Azuma, Cho; Sribanditmongkol, Pongruk; Tohno, Yoshiyuki

2007-01-01

125

Full-Scale Measurements of Motions and Stresses on a 1600-t Jacket During Transportation  

Microsoft Academic Search

This paper presents the results of full scale measurements performed on a 1600-t jacket during its transportation on board a 7500-t towed barge along the Northeast coast of Brazil showing a comprehensive set of motion variables, forces and stresses on sea-fastening system. The response of kinematic variables and forces on the sea-fastening elements due to the wave action are correlated

C. P. Pesce; Danton Nunes; Mario Rubio; Toshi Tachibana; Arney Marques

1983-01-01

126

Tympanic temperature and heart rate changes in firefighters during treadmill runs performed with different fireproof jackets  

Microsoft Academic Search

Six well-trained firefighters performed six treadmill runs at 70% of the velocity at VO2max (Maximal aerobic velocity MAV = 13.26±0.3 km h). A recovery time of 1 week was allowed between trials. The first session was performed by subjects wearing only shorts (i.e. no fire jacket, J0). A similar protocol was applied subsequently to test the physiological eOEects associated with

Foued Ftaiti; Jean Claude Duflot; Caroline Nicol; Laurent GrÉlot

2001-01-01

127

Corrosion of aluminum jackets on aboveground heat-distribution systems. Final technical report  

SciTech Connect

Severe corrosion of aluminum sheet used as a protective jacket on aboveground heat distribution systems has occurred at several military installations. This study was conducted to determine the cause of this corrosion and to recommend revisions to guide specifications on the design, selection, and construction on insulation systems on aboveground systems. Used and virgin materials were tested to determine the source of failure. It was concluded that the pitting corrosion of the aluminum resulted from leachable chloride ion in the insulation system. Heavy-metal particles contributed to the attack by supplying cathode area. A number of corrective measures were recommended to minimize in future construction: (1) Reduce the acceptable level of leachable chloride ion in the insulation components to 50 ppm, (2) Limit the amount of heavy metals in the insulation system, (3) Require a leaching test of insulation components to ensure that soluble binders have a pH of 6 to 7.5, (4) Design the insulation system to prevent excessive ingress of water from the outside and to prevent condensation of moisture on the inside of this aluminum jacket, (5) Design the vapor control system to prevent significant accumulation of water vapor, and (6) Avoid using a polyethylene coating on the aluminum jacket.

Cooper, K.E.; Segan, E.G.

1986-09-01

128

Nitrogen CARS Thermometry Within the Outer Jacket of a Metal Halide Lamp  

NASA Astrophysics Data System (ADS)

High-resolution coherent anti-Stokes Raman spectroscopy (CARS) was applied to measure axial and radial temperature profiles within the outer jacket of a 360 Watt metal halide lamp. The CARS technique was chosen for this task because its good spatial resolution, coherent signal beam, nonintrusive nature, and selectivity yields spectra with very high signal to noise ratios despite the high level of background radiation from the running lamp. We use nitrogen CARS thermometry here because the outer jacket is filled with 400 torr of nitrogen at room temperature. Rotationally resolved nitrogen CARS spectra are measured at a number of points within the metal halide lamp. A spectral simulation program is utilized to calculate spectra for gas temperatures between 500 and 1000 K. A comparison between these simulations and the measured rotationally resolved nitrogen CARS spectra allows the temperature at each point in the lamp to be accurately determined. In addition, good agreement was achieved between the measured temperature distribution and predicted axial and radial temperature profiles in the outer jacket of the metal halide lamp.

Brock, Lori R.; Adler, Helmar

1999-10-01

129

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

130

ELSEVIER Fisheries Research 29 (1997) 39-54 Modelling the length-dependent offshore distribution of redfish,  

E-print Network

ELSEVIER Fisheries Research 29 (1997) 39-54 Modelling the length-dependent offshore distribution). Redfish showed a strong length-dependent offshore distribution, with small fish occurring more frequently-type functions were used to model this length-dependent offshore distribution. There are two parameters

Chen, Yong

131

Frequency Domain Load Calculation for Offshore Wind Turbines (TURBU Offshore)  

Microsoft Academic Search

The design of offshore wind turbines requires to assess a huge amount of different sea-states and wind conditions. Therefor the calculational efficiency of a comb ined time\\/frequency domain approach is attractive. This was the reason for the development of the frequency domain tool TURBU Offshore. In addition, such a tool is very feasible for parameter studies; the dynamics of large

T. G. van Engelen

132

Offshore~WMEP - Monitoring offshore wind energy use  

Microsoft Academic Search

Offshore wind energy use is commonly suggested to play an important role in future electricity supply. However, long-term experience with thousands of onshore wind turbines explicitly hint on possible barriers for a save, efficient, economic and user friendly supply relying on offshore wind energy. A national German programme shall on the one hand support the wind energy branch improving technology

P. Lyding; S. Faulstich; B. Hahn; D. Callies

133

Security Issues with Offshore Outsourcing  

Microsoft Academic Search

Offshore coding is booming throughout North America and Europe, with Gartner group predicting that by 2004 80% of US companies will consider outsourcing critical services to foreign-based developers. But as this offshore outsourcing trend accelerates, concerns that enterprises are exposing themselves to undue risk of cyber-terrorism and industrial property theft are increasing.

Philip Hunter

2003-01-01

134

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

135

Floating offshore structure  

SciTech Connect

A floating offshore structure which is moored at a fixed position on the sea by means of mooring hawsers and anchors connected to the ends thereof respectively for conducting a submarine excavating operation from a deck of the structure. The structure includes a moorage hull part provided with a vertical through-hole formed therein for receiving an excavating drill pipe and the mooring hawsers and a movable hull part connected to the moorage hull part so as to be rotatable within a horizontal plane. The movable hull part is constituted as a hull defining the outer wall of the floating offshore structure and connected with the moorage hull part by inserting it into a moorage hull part receiving hole formed at a position closer to the bow thereof. The movable hull part has near its water plane a horizontal section with a substantially oval shape formed by a fore draft part in a substantially circular or polygonal shape, with the moorage hull part receiving hole as a center and an after draft part taperingly projecting aft from the fore draft part.

Oshima, M.; Narita, H.; Tabuchi, H.; Yashima, N.

1985-05-28

136

Effect of wearing an ice cooling jacket on repeat sprint performance in warm/humid conditions  

PubMed Central

Objective: To examine the effect of cooling the skin with an ice jacket before and between exercise bouts (to simulate quarter and half time breaks) on prolonged repeat sprint exercise performance in warm/humid conditions. Methods: After an initial familiarisation session, seven trained male hockey players performed two testing sessions (seven days apart), comprising an 80 minute intermittent, repeat sprint cycling exercise protocol inside a climate chamber set at 30°C and 60% relative humidity. On one occasion a skin cooling procedure was implemented (in random counterbalanced order), with subjects wearing an ice cooling jacket both before (for five minutes) and in the recovery periods (2 x 5 min and 1 x 10 min) during the test. Measures of performance (work done and power output on each sprint), heart rates, blood lactate concentrations, core (rectal) and skin temperatures, sweat loss, perceived exertion, and ratings of thirst, thermal discomfort, and fatigue were obtained in both trials. Results: In the cooling condition, chest (torso) skin temperature, thermal discomfort, and rating of thirst were all significantly lower (p<0.05), but no significant difference (p>0.05) was observed between conditions for measures of work done, power output, heart rate, blood lactate concentration, core or mean skin temperature, perceived exertion, sweat loss, or ratings of fatigue. However, high effect sizes indicated trends to lowered lactate concentrations, sweat loss, and mean skin temperatures in the cooling condition. Conclusions: The intermittent use of an ice cooling jacket, both before and during a repeat sprint cycling protocol in warm/humid conditions, did not improve physical performance, although the perception of thermal load was reduced. Longer periods of cooling both before and during exercise (to lower mean skin temperature by a greater degree than observed here) may be necessary to produce such a change. PMID:12663361

Duffield, R; Dawson, B; Bishop, D; Fitzsimons, M; Lawrence, S

2003-01-01

137

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

138

The Future of Offshore Wind Energy  

E-print Network

energy prices · Increasing demand for energy and RECs · Aging fleet of coal and nuclear plants not easily-wide economic development: Delaware as offshore staging hub · Stable prices · Clean energy · Meet RPS obligation1 The Future of Offshore Wind Energy #12;2 #12;3 Offshore Wind Works · Offshore wind parks: 28

Firestone, Jeremy

139

Recent developments in reassessment of jacket structures under extreme storm cyclic loading. Part 1: Overview  

SciTech Connect

An attractive approach to integrity assessment of jacket structures subjected to extreme storm cyclic loading is based on considerations of system strength rather than component strength. The system strength is determined by nonlinear pushover analyses. Nonlinear cyclic analyses are undertaken to determine if the system strength will be degraded due to repeated action of extreme waves. In the present series of papers, conditions for application and extension of such a procedure are addressed. Tubular members with D/t ratio in the range 35--80 were tested under extreme cyclic loading to investigate criteria for onset of local buckling and number of cycles to through thickness cracking. Tubular T-joints were tested under extreme cyclic loading to investigate degradation of cyclic capacity imposed by low cycle fatigue cracking. In part 1 of this series of papers, an overview of the developed methodology for integrity assessment of jacket structures is given. Conditions for application are addressed and illustrated by way of an example study.

Eide, O.I.; Skallerud, B.H.; Johansen, A. [SINTEF Structures and Concrete, Trondheim (Norway); Amdahl, J. [Norwegian Inst. of Tech., Trondheim (Norway)

1995-12-31

140

Model test of wave forces on a structurally dense jacket platform  

SciTech Connect

In the Gulf of Mexico, there are a significant number of jacket platforms built in the 1950`s and 60`s which are still in operation. Typically, these platforms have a large number of closely spaced legs and densely arranged bracing members. Since most of these platforms are beyond their design lives but the reservoirs are still producing, their safety, serviceability and fitness-for-purpose must be re-assessed in order to continue producing from them. During Mobil`s in-house re-qualification effort, it was found that the predictions by structural analysis programs (such as SACS and KARMA) were inconsistent with the platform inspection results. The programs predicted a large number of joint can failures during design storms (such as hurricane Andrew), but underwater inspections indicated only few failures had actually occurred. It was apparent that the procedure used for the assessment was conservative--either the wave loads the platforms experienced during the hurricanes were overestimated and/or the structural resistances were underestimated. This paper addresses the wave load issue. To calibrate the force algorithms typically used in structural analysis programs, a model test of a typical aging jacket platform was conducted in the wave basin.

Gu, G.Z.; Parsley, M.A.; Berek, E.P.; Calvo, J.J.; Johnson, R.C.; Petruska, D.J. [Mobil Technology Co., Dallas, TX (United States)

1996-12-31

141

Experimental evaluation of energy efficiency in a gas-heated self-contained steam jacketed kettle  

NASA Astrophysics Data System (ADS)

Gas Technological Development Center (CDT de GAS) has developed a new gas-heated self-contained steam jacketed kettle as a solution for temperature-controlled cooking of pulp fruit in the Colombian traditional candy-making industry. This initiative seeks to contribute to the promotion of natural gas as a cleaner and more efficient alternative to traditional fuels such as wood and coal in the Andean countries. Prototype follows the operational and safety rules provided by international and local standards: ASTM-F1602, ASME (section VIII, division 1), and NTC-4082. This paper presents the methodology, experimental setup and results obtained during the performance tests for heating efficiency evaluation of the kettle, according to the ASTM-F1785 standard, and the estimation of measurement uncertainty according to GUM method. The heating efficiency rate for this new prototype is higher to the convectional and commercial models of gas heated self-contained steam jacketed kettle. The results showed a heating efficiency of 63.83% ± 1.66% (k=2), whereas the emission of CO and NOX in stack gases was under the regulate limits for natural gas equipment.

Manrique, V.; García, L.; Alfonso, J.

2014-06-01

142

Airborne sound propagation over sea during offshore wind farm piling.  

PubMed

Offshore piling for wind farm construction has attracted a lot of attention in recent years due to the extremely high noise emission levels associated with such operations. While underwater noise levels were shown to be harmful for the marine biology, the propagation of airborne piling noise over sea has not been studied in detail before. In this study, detailed numerical calculations have been performed with the Green's Function Parabolic Equation (GFPE) method to estimate noise levels up to a distance of 10?km. Measured noise emission levels during piling of pinpiles for a jacket-foundation wind turbine were assessed and used together with combinations of the sea surface state and idealized vertical sound speed profiles (downwind sound propagation). Effective impedances were found and used to represent non-flat sea surfaces at low-wind sea states 2, 3, and 4. Calculations show that scattering by a rough sea surface, which decreases sound pressure levels, exceeds refractive effects, which increase sound pressure levels under downwind conditions. This suggests that the presence of wind, even when blowing downwind to potential receivers, is beneficial to increase the attenuation of piling sound over the sea. A fully flat sea surface therefore represents a worst-case scenario. PMID:25234870

Van Renterghem, T; Botteldooren, D; Dekoninck, L

2014-02-01

143

Experiments on an offshore platform model by FBG sensors  

NASA Astrophysics Data System (ADS)

Optical fiber sensors show superior potential for structural health monitoring of civil structures to ensure their structural integrity, durability and reliability. Apparent advantages of applying fiber optic sensors to a marine structure include fiber optic sensors" immunity of electromagnetic interference and electrical hazard when used near metallic elements over a long distance. The strains and accelerations of the newly proposed model of a single post jacket offshore platform were monitored by fiber Bragg grating (FBG) sensors. These FBG sensors were attached to the legs and the top of the platform model in parallel with electric strain gauges or traditional piezoelectric accelerometers, respectively. Experiments were conducted under a variety of loading conditions, including underwater base earthquake simulation dynamic tests and static loading tests. Underwater seismic shaking table was utilized to provide the appropriate excitations. The natural frequencies measured by the FBG accelerometer agree well with those measured by piezo-electrical accelerometers. The monitoring network shows the availability of applying different fiber optic sensors in long-distance structural health monitoring with frequency multiplexing technology. Finally, the existing problems of packaging, strain transferring ratio between the bare fiber and the host structure on which the fiber embedded, and installation and protection of fiber optic sensors are emphasized.

Li, Dongsheng; Li, Hongnan; Ren, Liang; Sun, Li; Zhou, Jing

2004-07-01

144

Conceptual Model of Offshore Wind Environmental Risk Evaluation System  

SciTech Connect

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

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

2010-06-01

145

A drilling model for young offshore Louisiana and Texas trends  

SciTech Connect

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

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

1988-06-01

146

Offshore industry executives meet  

SciTech Connect

The future of the Gulf of Mexico is tied to the overall future of oil/gas on the international market as it relates to the US. Conquering this last frontier, possibly only through development of technology, was one of the themes covered in the 21st Annual Meeting of the National Ocean Industries Association held in early April, 1993 in Washington, D.C. Oil is the major source for foreign exchange but there are major uncertainties in predicting the future. The swing (imports vs. exports) is two million barrels per day. The big oil users (heavy industry) have reduced consumption. The last big uncertainty is the environmental policies of the West. Development of resources in the Gulf was the third record year in a row in 1992. The potential for hydrocarbon discoveries is significant, a substantial number of new fields have been made and significant discoveries are likely to continue. More than 100 trillion cubic feet of natural gas lies undiscovered offshore - 35% of undiscovered domestic resources. The oil potential exceeds nine billion barrels, more than any other basin except Alaska.

Burns, R.F.

1993-05-01

147

Structure for offshore exploitation  

SciTech Connect

A structure is disclosed for use in exploiting arctic offshore areas where floating ice masses may be present. The structure is comprised of a floating hull having ice-breaking capabilities which is moored by a plurality of mooring means which extend vertically from a moonpool in the hull to the marine bottom directly under the hull. The mooring means comprises flexible lines, e.g. nylon, steel, or the like or rigid conduits, e.g. drill pipe. Means are provided within the moonpool for tensioning the mooring means to thereby draw the hull downward to a position below its normal buoyant position thereby substantially eliminating vertical heaving of the hull. When an ice mass contacts the hull, tension on the mooring means is relaxed to thereby allow the hull to rock upward against the ice thereby generating the forces necessary for the ice-breaking operation. Due to the present mooring means, the hull moves only a relatively short lateral distance in breaking an approaching ice mass. This is important in floating drilling operations. Further, if repair or replacement of a mooring means is required, this can be accomplished even when ice surrounds the hull since the mooring means are anchored directly below the hull and are easily accessible through the moonpool.

Gerwick, B.C. Jr.; Hatcher, S.J.

1984-02-28

148

Combination offshore drilling rig  

SciTech Connect

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 respect to such barge hull, the cantilever structure being so located relative to the drilling slot as to be movable horizontally into a position in vertical alignment with the drilling slot, a derrick and drilling machinery mounted to the cantilever structure and movable into a position above the drilling slot whereby well drilling operations may be conducted through the drilling slot, the cantilever structure also being movable horizontally to a position which locates the derrick and the drilling machinery outboard of the peripheral boundary of the barge hull, whereby a drilling operations may be conducted outside of the peripheral boundary of the barge hull, means mounted on the barge hull for moving the cantilever structure horizontally to different positions relative to the barge hull.

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

1986-07-29

149

Reassessment of offshore platforms  

SciTech Connect

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

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

1993-05-01

150

Keeping earnings offshore  

SciTech Connect

Two IRS designations determine the taxation status for non-U.S. projects. For developers, understanding these designations is an important business concern. A PFIC (passive foreign investment company) is something to avoid. A CFC (controlled foreign corporation) may be good or bad, depending on the circumstances. These are lables that the US tax authorities put on certain foreign corporations. Anyone working on projects in other countries should be able to recognize them, not only because they may defeat his objective of keeping money offshore, but also because there are additional consequences from operating through a foreign corporation that the Internal Revenue Service (IRS) has labeled a PFIC or CFC. Return on investment may be lower than expected, and the developer may need to be more careful than otherwise not to pledge the stock of the foreign corporation as security for borrowing by the parent company in the United States or take other actions that might be viewed as putting income or assets of the foreign corporation to use here.

Martin, K.; Malkani, S. (Chadbourne Parke, Washington, DC (United States))

1994-04-01

151

Release of bacteria during the purge cycles of steam-jacketed sterilizers.  

PubMed

The design of the steam-jacketed sterilizer includes an exterior air-gap fixture through which purged chamber aerosols potentially could escape into the ambient environment. Studies of the purge cycle in two sterilizer models tested the potential release of a genetically marked Enterococcus faecalis, together with Bacillus stearothermophilus spores introduced as exposed cultures. Direct plate counts, broth enrichment and polymerase chain reaction analysis were used to confirm any released organisms trapped in an all-glass impinger. From the retrieval of both bacterial strains, an estimated 10(3) organisms can be released from uncontained bacterial loads of 10(11) E. faecalis and 10(7) B. stearothermophilus, even from properly functioning autoclaves. The release of an opportunistic pathogen from sterilizer purge exhausts emphasises the importance of proper sterilizer location, ventilation, containment of heavily contaminated loads, and adequate sterilizer maintenance. PMID:10795367

Marshall, B M; Shin-Kim, H; Perlov, D; Levy, S B

1999-01-01

152

Condition monitoring methods applied to degradation of chlorosulfonated polyethylene cable jacketing materials.  

SciTech Connect

Three promising polymer material condition monitoring (CM) methods were applied to eight commercial chlorosulfonated polyethylene cable jacket materials aged under both elevated temperature and high-energy radiation conditions. The CM methods examined, cross-sectional modulus profiling, solvent uptake and NMR T{sub 2} relaxation time measurements of solvent-swelled samples, are closely related since they are all strongly influenced by the changes in overall crosslink density of the materials. Each approach was found to correlate well with ultimate tensile elongation measurements, the most widely used method for following degradation of elastomeric materials. In addition approximately universal failure criteria were found to be applicable for the modulus profiling and solvent uptake measurements, independent of the CSPE material examined and its degradation environment. For an arbitrarily assumed elongation 'failure' criterion of 50% absolute, the CSPE materials typically reached 'failure' when the modulus increased to {approx}35 MPa and the uptake factor in p-xylene decreased to {approx}1.6.

Assink, Roger Alan; Gillen, Kenneth Todd; Bernstein, Robert; Celina, Mathias Christopher

2005-05-01

153

[The method of esthetic crown restoration with composite resin jacket crown in primary molars].  

PubMed

The term "esthetics" has recently been also used in the dental field, and a field called esthetic dentistry is increasingly being noted. The number of not only adult but also pediatric patients who visit for treatment aiming at esthetic recovery is being increased. Inpedodontics, composite resin of the coronal color is generally used in the restoration of deciduous incisors. However, the method using metal crowns for the deciduous teeth is used for the deciduous molars at present. We applied a composite resin jacket crown to the deciduous molar in a way similar to that of esthetic crown restoration for the anterior teeth. The surgical procedure before crown preparation varied slightly according to the presence or absence of pulpal treatment of vital teeth and with non-vital teeth, but the application was performed as follows: 1) Desensitization of pulp, pulpal treatment and core construction. 2) Preparation of crown. 3) Selection, trial set and occlusal equilibration of a metal crown for the deciduous tooth. 4) Precision impression with a silicone impression material. 5) Removal of the metal crown for the deciduous tooth from the impression material. 6) Making of an under-cut to the abutment tooth on the buccal lingual side. 7) Filling of the impression with chemical polymerization resin. 8) Application of pressure in the oral cavity. 9) Adjustment of edge and crown forms. Thus, the preparation method for the composite resin jacket crown was relatively simple. Since this surgery, the patient has been followed up for 1 year and 6 months, and no specifically troublesome points have been observed clinically. The patient and her parents are satisfied with the results.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:2134806

Doi, K; Shibui, N; Suda, M; Uehara, M; Karibe, H; Kondou, K

1990-10-01

154

Houlsby, G. T., Kelly, R. B., Huxtable, J. & Byrne, B. W. (2005). Geotechnique 55, No. 4, 287296 Field trials of suction caissons in clay for offshore wind turbine  

E-print Network

quant a` la conception des fondations des turbines a` vent. INTRODUCTION The offshore wind energy. However, with the current expansion of the offshore wind energy industry, alternative foundation types­296 287 Field trials of suction caissons in clay for offshore wind turbine foundations G. T. HOULSBY*, R

Byrne, Byron

155

Reliability of Jackets: BeyondStaticCapacity D. G. Schmucker 1 and C. A. Cornell 2  

E-print Network

is used to demonstrate the potential benefits (reducing the estimated annual likelihood of failure A robust, explicit expression of the failure probability of an offshore structure under extreme wave loads possessing ductile failure modes, peak dynamic loads may be resisted that exceed static capacity

Sweetman, Bert

156

Ultrasonic thickness testing of aging offshore structures  

E-print Network

The objectives of this thesis concern the use of ultrasonic thickness (UT) testing for use in the offshore industry. Evidence from prior studies conducted at Texas A&M University suggests that the corrosion on the surface of offshore structural...

Ellison, Brian Kirk

2012-06-07

157

Offshore wind farm layout optimization  

NASA Astrophysics Data System (ADS)

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

Elkinton, Christopher Neil

158

Current facts about offshore wind farms  

Microsoft Academic Search

This paper reviews offshore wind projects with a wide perspective. The current situation of the offshore wind market is presented, pointing out the countries leading the process in terms of installed capacity and in terms of technological leadership. Feasibility studies of alternative offshore wind farms (OWFs) are interesting not only in relation to the business but in relation to the

A. Madariaga; S. Ceballos

2012-01-01

159

The politics and economics of offshore outsourcing  

Microsoft Academic Search

This paper reviews the political uproar over offshore outsourcing connected with the release of the Economic Report of the President (ERP) in February 2004, examines the differing ways in which economists and non-economists talk about offshore outsourcing, and assesses the empirical evidence on the importance of offshore outsourcing in accounting for the weak labor market from 2001 to 2004. Even

N. Gregory Mankiw; Phillip Swagel

2006-01-01

160

Offshoring in the New Global Political Economy  

Microsoft Academic Search

abstract? This essay challenges claims by economists and management scholars that ‘offshoring’ is simply another form of trade with mutual benefits. I argue that reducing wages through offshoring leads to wealth creation for shareholders but not necessarily for countries and employees, and that many displaced workers have difficulty ‘trading up’ to higher skilled jobs. Offshoring is a new phenomenon that

David L. Levy

2005-01-01

161

Offshore Scientific and Technical Publications: 1985 Annual  

Microsoft Academic Search

The Minerals Management Service (MMS) established a scientific and technical publications program for Offshore Minerals Management in 1984. The objective of the program is to make the investigative findings of the Offshore Program available to the public. The Technical Publications Unit (TIP) within the Office of Offshore Information and Publications operates this program. The TPU has assigned series designations and

Bajusz

1988-01-01

162

Offshore QRA and the ALARP principle  

Microsoft Academic Search

A discussion is presented of the use of QRA within a requirement, of the UK offshore safety case regime, to demonstrate that risks from offshore major accidents are ALARP. General considerations are given to uncertainties in failure and incident data, assumptions and consequence methodologies within the analysis element of offshore QRA. The validity of risk results arising from the analysis

Stan Schofield

1998-01-01

163

European offshore oil and gas, 1985  

SciTech Connect

This book discusses the offshore industry, and provides information on every aspect of European offshore activity from basic geological facts to today's licensing and taxation regimes to field by field analysis of exploration and developments. It also contains a directory of European companies supplying services and equipment to offshore industry.

Not Available

1985-01-01

164

17 CFR 230.904 - Offshore resales.  

Code of Federal Regulations, 2013 CFR

... 2013-04-01 false Offshore resales. 230.904 Section...Act of 1933 § 230.904 Offshore resales. (a) An...offer or sale are made in an offshore transaction; (2) No...prior to the expiration of the distribution compliance period...

2013-04-01

165

17 CFR 230.904 - Offshore resales.  

Code of Federal Regulations, 2012 CFR

... 2012-04-01 false Offshore resales. 230.904 Section...Act of 1933 § 230.904 Offshore resales. (a) An...offer or sale are made in an offshore transaction; (2) No...prior to the expiration of the distribution compliance period...

2012-04-01

166

17 CFR 230.904 - Offshore resales.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 false Offshore resales. 230.904 Section...Act of 1933 § 230.904 Offshore resales. (a) An...offer or sale are made in an offshore transaction; (2) No...prior to the expiration of the distribution compliance period...

2010-04-01

167

17 CFR 230.904 - Offshore resales.  

... 2014-04-01 false Offshore resales. 230.904 Section...Act of 1933 § 230.904 Offshore resales. (a) An...offer or sale are made in an offshore transaction; (2) No...prior to the expiration of the distribution compliance period...

2014-04-01

168

17 CFR 230.904 - Offshore resales.  

Code of Federal Regulations, 2011 CFR

... 2011-04-01 false Offshore resales. 230.904 Section...Act of 1933 § 230.904 Offshore resales. (a) An...offer or sale are made in an offshore transaction; (2) No...prior to the expiration of the distribution compliance period...

2011-04-01

169

Incorporation of Multi-Member Substructure Capabilities in FAST for Analysis of Offshore Wind Turbines: Preprint  

SciTech Connect

FAST, developed by the National Renewable Energy Laboratory (NREL), is an aero-hydro-servo-elastic tool widely used for analyzing onshore and offshore wind turbines. This paper discusses recent modifications made to FAST to enable the examination of offshore wind turbines with fixed-bottom, multi-member support structures (which are commonly used in transitional-depth waters).; This paper addresses the methods used for incorporating the hydrostatic and hydrodynamic loading on multi-member structures in FAST through its hydronamic loading module, HydroDyn. Modeling of the hydrodynamic loads was accomplished through the incorporation of Morison and buoyancy loads on the support structures. Issues addressed include how to model loads at the joints of intersecting members and on tapered and tilted members of the support structure. Three example structures are modeled to test and verify the solutions generated by the modifications to HydroDyn, including a monopile, tripod, and jacket structure. Verification is achieved through comparison of the results to a computational fluid dynamics (CFD)-derived solution using the commercial software tool STAR-CCM+.

Song, H.; Robertson, A.; Jonkman, J.; Sewell, D.

2012-05-01

170

Transfer terminal for offshore production  

SciTech Connect

A mooring station and transfer terminal for offshore hydrocarbon production is provided, comprising a coaxial riser linking underwater production and safety manifolds to surface lines. An underwater connector and quick release means are provided to facilitate rapid connection and disconnection of the riser pipes.

Arnaudeau, M.

1983-02-01

171

Re-Regulating Offshore Finance?  

Microsoft Academic Search

This article explores global efforts to regulate offshore finance in the wake of international concern about the effects of so-called harmful tax competition, as well as money laundering and terrorist financing (the latter a relatively new category since September 11, 2001). In the mid-1990s, a number of multilateral organizations, from the Organization for Economic Cooperation and Development (OECD) to the

B. Maurer

2008-01-01

172

Offshore oil: Correctness of perspective  

Microsoft Academic Search

Except for the Gulf of Mexico, the offshore oil industry has been virtually banned from the US Exclusive Economic Zone for ten years. The oil potential in Alaska's Arctic National Wildlife Refuge (ANWR) is also off limits. The Gulf of Mexico is the only place with prospects for future success and a number of companies both large and small are

1993-01-01

173

Towers for Offshore Wind Turbines  

Microsoft Academic Search

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

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

2010-01-01

174

Stress-induced martensitic transformation during tensile test of full-size TF conductor jacket tube at 4.2 K  

NASA Astrophysics Data System (ADS)

The toroidal-field (TF) conductor jacket of International Thermonuclear Experimental Reactor (ITER) is made of modified 316LN stainless steel, which is influenced by heat treatment at approximately 650 °C for 200 h to produce Nb3Sn superconducting materials at the final stage. Due to the high electromagnetic forces arising during magnet operation, higher mechanical properties of the jacket materials at cryogenic temperatures are required. In our work, mechanical properties of the full-size TF conductor jacket tube were investigated, which satisfied the ITER requirements. Stress-induced martensitic transformation mechanism during tensile test of the conductor jacket material at 4.2 K was characterized by means of in-situ temperature dependent XRD, vibrating sample magnetometer (VSM) and in conjunction with transmission electron microscopy (TEM). The tensile behavior related to the amount of stress-induced phase transformation at cryogenic temperature was also discussed.

Yang, H. H.; Wu, Z. X.; Huang, C. J.; Huang, R. J.; Li, S. P.; Li, L. F.

2014-01-01

175

COMPARATIVE COST STUDY OF PROCESSING STAINLESS STEEL-JACKETED UOâ FUEL: MECHANICAL SHEAR-LEACH VS SULFEX-CORE DISSOLUTION  

Microsoft Academic Search

The economics of mechanical shear-leach and Sulfex decladding-core ; dissolution head end treatments for processing typical tubular bundles of ; stainless steel-jacketed UOâ nuclear fuels were compared. A 2.66 metric ; ton U\\/day head end portion of a plant was designed for each process and capital ; and operating costs were developed. For plants of this size and larger, ;

J. B. Adams; A. M. Benis; C. D. Watson

1962-01-01

176

Skin, bone and muscle collagen extraction from the trash fish, leather jacket ( Odonus niger ) and their characterization  

Microsoft Academic Search

Acid soluble (ASC) and pepsin soluble (PSC) collagens were extracted from the skin, bone and muscle of a trash fish, leather\\u000a jacket (Odonus niger) by three different extraction methods. Method I gave 46–50% yield for ASC, Method II gave 49–58% yield\\u000a for both ASC and PSC and Method III gave 64–71% yield for PSC. The addition of pepsin had increased

Nagarajan Muralidharan; Robinson Jeya Shakila; Durairaj Sukumar; G. Jeyasekaran

177

Huntington Beach offshore Parcel 14  

Microsoft Academic Search

Parcel 14 of the Huntington Beach Oil Field (California) is located down the west plunge of a large east-west-trending asymmetrical anticlinal structure. This offshore structure extends from the shore westward approximately 3 miles. The south flank of the anticline is steep-dipping with known dips up to 65°. The north flank has an average dip of 10$. Faulting is minor on

1966-01-01

178

Testable Requirements for Offshore Outsourcing  

Microsoft Academic Search

Given that software offshore outsourcing is a business relationship, we assume that a contract is required in order to define\\u000a what services are requested from a contracted entity and how these services are to be delivered to the satisfaction of the\\u000a contractor. We first argue that, at the heart of the quality assurance facets of such a contract, we must

Jean-pierre Corriveau

2007-01-01

179

OFFSHORE DISTRIBUTION OF HYDRACTINIA ECHINATA  

Microsoft Academic Search

ABSTRAcr New distributional records for this hydroid are listed from 81 offshore locations along the Middle Atlantic region and from Georges Bank, off MassachusettS. The species was commonly found living on the shells of ani· mals having some degree of mobility-sea scallops (Pltlco­ pecten magelllln;cus), and gastropod shells inhabited by pagurid crabs. The bottom substrate for these animals is

ARTHUR S. MERRILL

180

Offshore oil: Correctness of perspective  

SciTech Connect

Except for the Gulf of Mexico, the offshore oil industry has been virtually banned from the US Exclusive Economic Zone for ten years. The oil potential in Alaska's Arctic National Wildlife Refuge (ANWR) is also off limits. The Gulf of Mexico is the only place with prospects for future success and a number of companies both large and small are determined to move forward. The depressed price of oil does not encourage development but recently gas prices in the US have increased, making offshore gas development more feasible. Perhaps most significant is development and application of new technology and more intense management to make sure it works. The offshore oil companies and support industries have made significant technological advances, expending over and above the dollars paid in taxes, lease fees, and royalties. The ocean industries harbor a great reservoir of high technology knowledge. They have demonstrated the ability to successfully meet a vast array of challenges in exploring for, drilling, and producing oil and gas in extreme conditions. These facts beg the question as to the rational basis of each and every regulation and the ban on drilling.

Burns, R.F.

1993-05-01

181

Extensive open ocean aquaculture development within wind farms in Germany: the prospect of offshore co-management and legal constraints  

Microsoft Academic Search

In the offshore region of Germany, human activity is increasing in type and intensity. Larger portions of the sea are sectioned off, dedicated for specific, often exclusive uses that cause rising conflicts between interests groups. One solution calls for stakeholder integration and the multifunctional use of space. This article focuses on two examples, offshore wind farms and open ocean aquaculture.

Bela Hieronymus Buck; Gesche Krause; Harald Rosenthal

2004-01-01

182

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

183

Hydrodynamic Wave Loading on Offshore Structures Simulated by a Two-Phase Flow Model  

Microsoft Academic Search

The numerical simulation of hydrodynamic wave loading on different types of offshore structures is important to predict forces on and water motion around these structures. This paper presents a numerical study of the effects of two-phase flow on an offshore structure subject to breaking waves.\\u000aThe details of the numerical model, an improved Volume Of Fluid (iVOF) method, are presented

Rik Wemmenhove; Erwin Loots; Arthur E. P. Veldman

2006-01-01

184

Characteristic features of salt tectonics offshore North Sinai, Egypt  

Microsoft Academic Search

Salt tectonic along offshore North Sinai was studied using seismic reflection data. The study revealed and identified various\\u000a types of salt tectonics and structures in the study area. The triggering mechanism of salt tectonics was attributed to the\\u000a pressure regime initiated from overloading sediments on the Messinian evaporites. The sediment load of 3,000 m exceeds the\\u000a critical load (more than 1,000 m)

El Sayed Ibrahim Selim; Mohamed A. Omran

185

Stress and accidents in the offshore oil and gas industry  

SciTech Connect

This book is a comprehensive analysis of occupational stress and accidents among personnel working in the European offshore oil and gas industry. Identifies sources of stress and predicts stressor outcomes. Examines job dissatisfaction, mental well-being and their relation to accidents. Also explores the differences within occupational status (operator versus contractor) and type of installation (drilling rigs versus fixed production platforms). Conclusions presented include the growing need for extensive management involvement, responsibility, and understanding in this exceptionally high environmental stress industry.

Sutherland, V.J.; Cooper, C.L.

1991-01-01

186

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

187

46 CFR 15.520 - Mobile offshore drilling units.  

Code of Federal Regulations, 2010 CFR

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

2010-10-01

188

75 FR 47311 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...affecting the oil and gas offshore industry. This meeting will...other concerns affecting the offshore oil and gas industry and assists...and possible action on the Offshore Supply Vessels (OSV's...2010. Written material for distribution to Committee members...

2010-08-05

189

Bundled pipe speeds offshore laying  

SciTech Connect

Technology which allows pipelines to be installed in bundles is expediting pipelay operations in the North Sea. This paper reports how the piggyback system was recently used on 60 km of North Sea gas pipelines for three major projects. For 7 years the practice of installing two or more pipelines in one operation has become an established practice for North Sea offshore oil and gas projects. The technique, commonly referred to as a piggyback operation, reduces installation costs, improves operation reliability, and cuts maintenance time.

Brockbank, J. (Avon Industrial Polymers Ltd., Melksham, Wiltshire (GB))

1990-05-07

190

Offshore Wind Turbines: Some Technical Challenges  

E-print Network

1 Offshore Wind Turbines: Some Technical Challenges Prof. Guy Houlsby FREng Oxford University House engineers concerned with installation of offshore wind turbines. The author is Professor of Civil solved, a DTI and EPSRC-sponsored research programme on foundations for wind turbines will be briefly

Houlsby, Guy T.

191

Expanders do payouts offshore North Sea  

Microsoft Academic Search

Rich associated gas may be beneficially processed offshore, to yield high value condensate to be spiked into the crude, whilst still producing gas with an acceptable nett calorific value. Actual turbo expander operating experience on the Occidental Piper North Sea Platform has demonstrated that expanders are reliable offshore. This paper, describes both the process and mechanical aspects that affect the

J. Barnwell; W. Wong

1984-01-01

192

Cost of Offshore Wind Energy Charlene Nalubega  

E-print Network

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

Mountziaris, T. J.

193

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

194

Ice island creation, drift, recurrences, mechanical properties, and interactions with arctic offshore oil production structures  

SciTech Connect

Research and engineering studies on first-year sea ice for over two decades has resulted in the design, construction, and operation of jacket platforms, of artificial islands, and of massive gravity structures which routinely withstand moving sea ice of thickness up to 2 meters. However, the less-common interactions between such structures and moving multiyear ice ([ge]3 meters thick), and also moving ice islands (10 to 60 meters thick) remain as the unknown and potentially most serious hazard for Arctic offshore structures. In this study, research was addressed across the complete span of remaining questions regarding such features. Ice island components, thickness distributions, scenarios and models for the interactions of massive ice features with offshore structures, all were considered. Ice island morphology and calving studies were directed at the cluster of 19 ice islands produced in a calving from the Ward Hunt Ice Shelf on Ellesmere Island in 1983, and also at a calving from the Milne Ice Shelf in 1988. The statistics of ice island dynamics, on both a short-term small-scale basis and also on a long-term basis, were studied. Typical wind velocities of 5 to 7.5 meters per second led to ice island speeds of about 0.014 of the wind speed, at an angle of 20[degrees] to the right of the wind direction. Ice island samples were tested for their stress/strain characteristics. Compressive strength values ranged from 1.64 MPa at a strain rate of 2 [times] 10[sup [minus]7] s[sup [minus]1] to 6.75 MPa at a strain rate of 1 [times] 10[sup [minus]3] s[sup [minus]1]. Scenarios for ice island/structure interactions were developed, and protective countermeasures such as spray ice and ice rubble barriers were suggested. Additional computer modeling of structure/ice interactions for massive ice features is recommended.

Sackinger, W.M.; Jeffries, M.O.; Li, Fucheng; Lu, Mingchi.

1991-03-01

195

ABA Type Triblock Copolymer Based on Mesogen-Jacketed Liquid Crystalline Polymer: Design, Synthesis, and Potential as Thermoplastic  

E-print Network

, and Potential as Thermoplastic Elastomer Yi Yi, Xinghe Fan, Xinhua Wan, Lei Li, Ning Zhao, Xiaofang Chen, Jian as liquid crystalline thermoplastic elastomer (LCTPE). The synthetic strategy is to obtain a difunctional and tensile tests prove that the sample has the potential as thermoplastic elastomers (TPEs). According to our

Wan, Xin-hua

196

Current and future offshore activities in Canada  

SciTech Connect

The development of innovative exploratory drilling systems for Canada's harsh Arctic offshore areas over the past decade and future activity in these areas, including possible production concepts, are discussed. The results can be applied in other Arctic areas of the world, including offshore Alaska. This operating experience will advance technology and serve as a basis for the design of Arctic offshore production and transportation systems. Unique technology has been developed and successfully used in the discovery of major accumulations of hyrodcarbons. Continued technological advances are anticipated to have widespread Arctic applications in both exploratory and production operations.

Hnatiuk, J.

1987-06-01

197

Quantifying the hurricane risk to offshore wind turbines  

E-print Network

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

Jaramillo, Paulina

198

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 .......................................................................................................................... 22 #12;Hydroacoustic monitoring of fish communities in offshore wind farms Page I Horns Rev Offshore Rev Offshore Wind Farm Published: May 2005 Prepared by: Christian B. Hvidt Lars Brünner Frank Reier

199

Offshoring: General Equilibrium Effects on Wages, Production and Trade  

Microsoft Academic Search

A simple model of offshoring, which depicts offshoring as ?shadow migration,? permits straightforward derivation of necessary and sufficient conditions for the effects on wages, prices, production and trade. We show that offshoring requires modification of the four classic international trade theorems, so econometricians who ignore offshoring might reject the Heckscher-Ohlin theorem when a properly specified version held in the data.

Richard E. Baldwin; Frédéric Robert-Nicoud

2007-01-01

200

Decommissioning of offshore oil and gas facilities: a comparative assessment of different scenarios.  

PubMed

A material and energy flow analysis, with corresponding financial flows, was carried out for different decommissioning scenarios for the different elements of an offshore oil and gas structure. A comparative assessment was made of the non-financial (especially environmental) outcomes of the different scenarios, with the reference scenario being to leave all structures in situ, while other scenarios envisaged leaving them on the seabed or removing them to shore for recycling and disposal. The costs of each scenario, when compared with the reference scenario, give an implicit valuation of the non-financial outcomes (e.g. environmental improvements), should that scenario be adopted by society. The paper concludes that it is not clear that the removal of the topsides and jackets of large steel structures to shore, as currently required by regulations, is environmentally justified; that concrete structures should certainly be left in place; and that leaving footings, cuttings and pipelines in place, with subsequent monitoring, would also be justified unless very large values were placed by society on a clear seabed and trawling access. PMID:16373078

Ekins, Paul; Vanner, Robin; Firebrace, James

2006-06-01

201

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

202

Offshore medicine: Medical care of employees in the offshore oil industry  

SciTech Connect

This book is specifically designed to help the doctor who has to provide medical care for the expanding offshore oil industry. It describes the pattern of work offshore and the medical problems which it generates. The special features of offshore medical care are described along with the training of medics, the design of hospital facilities, and the provision of back-up services to cope with them. These are special chapters on diving, hygiene, and catering, dentistry, and legal aspects.

Cox, R.A.F.

1987-01-01

203

Offshore sand resources for coastal erosion control in Louisiana  

SciTech Connect

An inventory of existing geophysical data supplemented by more than 15,000 km of high-resolution seismic profiles and 400 vibracores collected cooperatively by the Louisiana Geological Survey and US Geological Survey since 1981 indicates that a wide range of aggregate minerals occurs on the continental shelf in a variety of depositional settings. The distribution of these deposits is controlled by the geometry of the preexisting fluvial and deltaic channel systems and the stratigraphic signature of the Holocene Transgression across these features. The geology of coastal and offshore Louisiana is tied to the depositional history of the Mississippi River. Offshore of the delta plain, five types of aggregate sources can be identified: inner shelf shoals, submerged barrier islands, tidal inlets, distributary channels, and barrier platforms. This paper describes the geology of offshore Louisiana, the available geophysical data sets, and the distribution of aggregate mineral resources. On the continental shelf of the Mississippi River delta plain, two extensive seismic survey grids have been developed by the Louisiana Geological Survey and US Geological Survey. The most prospective resources found are the huge sand bodies of Ship Shoal and associated distributaries, Cat Island Pass tidal channels and associated tidal deltas, and Barataria Pass/Grand Terre tidal channels and associated tidal deltas. East of the mouth of the Mississippi River are the Chandeleur Islands, where LGS identified seven major sand resource targets, truncated barrier-spit and tidal inlet deposits, submerged beach ridges, and distributaries associated with abandoned St. Bernard delta complexes. Abundant sand resources can be found in offshore Louisiana. Many of the sand bodies contain heavy minerals, but their concentration and distribution is unknown. Other potential sand resources not yet adequately explored include Sabine Bank, the Outer Shoal, and the St. Bernard shoal.

Ramsey, K.E.; Penland, S.; McBride, R.A. (Louisiana Geological Survey, Baton Rouge (USA)); Suter, J.R. (Exxon Production Research, Houston, TX (USA)); Williams, J. (Geological Survey, Reston, VA (USA))

1990-09-01

204

31 CFR 585.408 - Offshore transactions.  

Code of Federal Regulations, 2010 CFR

...THE TREASURY FEDERAL REPUBLIC OF YUGOSLAVIA (SERBIA AND MONTENEGRO) AND BOSNIAN SERB-CONTROLLED AREAS OF THE REPUBLIC OF BOSNIA AND HERZEGOVINA SANCTIONS REGULATIONS Interpretations § 585.408 Offshore transactions. (a) The...

2010-07-01

205

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

206

Offshore oil in the alaskan arctic.  

PubMed

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 nature gas within U.S. jurisdiction. Most (65 to 70 percent) of these estimated reserves are believed to occur 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. PMID:17813239

Weeks, W F; Weller, G

1984-07-27

207

31 CFR 588.406 - Offshore transactions.  

Code of Federal Regulations, 2013 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WESTERN BALKANS STABILIZATION REGULATIONS Interpretations § 588.406 Offshore transactions. The prohibitions in §...

2013-07-01

208

31 CFR 588.406 - Offshore transactions.  

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY WESTERN BALKANS STABILIZATION REGULATIONS Interpretations § 588.406 Offshore transactions. The prohibitions in §...

2014-07-01

209

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

210

31 CFR 547.406 - Offshore transactions.  

Code of Federal Regulations, 2013 CFR

...Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS REGULATIONS Interpretations § 547.406 Offshore transactions. The...

2013-07-01

211

31 CFR 547.406 - Offshore transactions.  

Code of Federal Regulations, 2011 CFR

...Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS REGULATIONS Interpretations § 547.406 Offshore transactions. The...

2011-07-01

212

31 CFR 547.406 - Offshore transactions.  

Code of Federal Regulations, 2012 CFR

...Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS REGULATIONS Interpretations § 547.406 Offshore transactions. The...

2012-07-01

213

31 CFR 547.406 - Offshore transactions.  

...Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS REGULATIONS Interpretations § 547.406 Offshore transactions. The...

2014-07-01

214

31 CFR 547.406 - Offshore transactions.  

Code of Federal Regulations, 2010 CFR

...Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY DEMOCRATIC REPUBLIC OF THE CONGO SANCTIONS REGULATIONS Interpretations § 547.406 Offshore transactions. The...

2010-07-01

215

System architecture of offshore oil production systems  

E-print Network

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

Keller, James (James Thomas)

2008-01-01

216

Expanders do payouts offshore North Sea  

SciTech Connect

Rich associated gas may be beneficially processed offshore, to yield high value condensate to be spiked into the crude, whilst still producing gas with an acceptable nett calorific value. Actual turbo expander operating experience on the Occidental Piper North Sea Platform has demonstrated that expanders are reliable offshore. This paper, describes both the process and mechanical aspects that affect the choice of an expander system for an offshore application. For a given typical rich associated gas, three process options are compared, Joule-Thompson expansion, external refrigeration and a turbo expander system. The process study illustrates that a turbo expander system is comparable for the offshore situation with the other two options. The paper also describes the mechanical features that should be incorporated into the specification of an expander for use on a platform topsides.

Barnwell, J.; Wong, W.

1984-02-01

217

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

218

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

219

Offshore Oil in the Alaskan Arctic  

Microsoft Academic Search

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 occur offshore beneath the shallow, ice-covered seas of the Alaskan continental shelf. Offshore recovery operations for such areas are

G. Weller

1984-01-01

220

Grid Integration of Offshore Wind Farms  

Microsoft Academic Search

\\u000a Offshore wind farms tend to become bigger and far from the onshore point of connection. The developers and the system operators\\u000a are facing a number of technical, economical, and environmental challenges in transmitting the bulk power developed at these\\u000a offshore wind farms over long distances. In this Chapter, some of these issues are discussed, giving emphasis to the basic\\u000a system

Lie Xu

221

Corrosion control survey methods for offshore pipelines  

SciTech Connect

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 used as well as hybrid systems that use a combination of the two. In this paper survey techniques are described and evaluated.

Weldon, C.P.; Kroon, D. (Corrpro Co. Inc., North, Spring, TX (US))

1992-02-01

222

Offshoring, immigration, and the native wage distribution  

Microsoft Academic Search

This paper presents a simple model that examines the impact of offshoring and immigration on wages and tests these predictions using U.S. state-industry-year panel data. According to the model, the productivity effect causes offshoring to have a more positive impact on low-skilled wages than immigration, but this gap decreases with the workers' skill level. The empirical results confirm both of

William W. Olney

2012-01-01

223

Arctic and offshore research. Technology status report  

SciTech Connect

DOE's Morgantown Energy Technology Center (METC) and the DOE Fossil Energy Office of Oil, Gas, and Shale Technology are performing the following activities in Arctic and Offshore Research (AOR): (1) AOR Energy-Related Technology Data Base Development; (2) AOR seminars and workshops; (3) Arctic and Offshore Energy Research Coordination; (4) Arctic and Offshore Research which includes analysis of ice island generation, and prediction of drift paths; field and laboratory determination of (1) the engineering properties of multiyear ice, and (2) the interaction of multiyear ice with offshore structures; analysis of ice gouging in deep water (150 to 210 feet) in the Arctic Ocean, and numerical simulation modeling of the gouging process; analysis of the location and origin of the ice-ridging shear zone; analysis of sea-ice thickness using airborne radar sensing techniques; improvement of permafrost detection techniques, and analysis of permafrost characteristics; investigation of the effects of ice accretion and corrosion on offshore structures; measurements of seismic acceleration and velocity for analyzing vibration in and stability of off-shore structures; detection of oil spills that occur below the Arctic ice pack; analysis of the effects of frost heave and corrosion on pipelines; (5) Advanced Recovery Technologies; and (6) Subice Systems Development. Current activities include determining the Arctic bibliographic data base and initiating most of the research described above (except multiyear ice properties, pipeline research, and subice systems development). 10 refs., 15 figs., 3 tabs.

Not Available

1985-10-01

224

78 FR 43003 - Proposed Collection; Comment Request on Information Collection Tools Relating to the Offshore...  

Federal Register 2010, 2011, 2012, 2013

...Relating to the Offshore Voluntary Disclosure Program (OVDP) AGENCY...comments concerning the Offshore Voluntary Disclosure Program (OVDP). DATES...requirements: Title: Offshore Voluntary Disclosure Program (OVDP). OMB...

2013-07-18

225

Concerted Action for Offshore Wind Energy Deployment (COD): Grid Integration of Offshore Wind Farms  

Microsoft Academic Search

The objective of the European Concerted Action on Offshore Wind Energy Deployment (COD) is to speed up the responsible deployment of offshore wind energy in the EU by early identification and possibly to remove not explicitly technical barriers: legal, administrative, policy, environmental and grid infrastructure planning issues. The COD is carried out by eight sea- bordering member states, represented by

Achim Woyte; Helen Snodin; Paul Gardner; Ruud de Bruijne

226

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

227

10 CFR 150.7 - Persons in offshore waters not exempt.  

...2014-01-01 false Persons in offshore waters not exempt. 150.7 Section 150...IN AGREEMENT STATES AND IN OFFSHORE WATERS UNDER SECTION 274 Continued Commission Regulatory Authority in Offshore Waters § 150.7 Persons in offshore...

2014-01-01

228

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

229

A Comparison of Methods for Sampling Fish Diversity in Shallow Offshore Waters of Large Rivers  

Microsoft Academic Search

Few studies of fish assemblages have been conducted in large rivers owing to the difficulties of sampling such complex systems. We evaluated the effectiveness of six different gear types (seine nets, boat electrofishers, hoop nets, Windermere traps, trap nets, and minnow traps) in sampling the fish assemblage at 30 sites in the shallow offshore waters of the middle Detroit River

Nicolas W. R. Lapointe; Lynda D. Corkum; Nicholas E. Mandrak

2006-01-01

230

Reliability prediction of offshore oil and gas equipment for use in an arctic environment  

Microsoft Academic Search

The offshore oil and gas industry is currently moving into the arctic region. The harsh arctic environment will have an unavoidable influence on the reliability of the equipment operated in it. To understand this influence is of vital importance to ensure the reliability of the equipment and the production availability of the systems. Several types of data, such as data

Maryam Rahimi; Marvin Rausand; Shaomin Wu

2011-01-01

231

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

USGS Publications Warehouse

Detailed diet linkages within the offshore (> 80 m bathymetric depth) food web of Lake Superior are currently not well identified. We used analyses of fish stomach contents to create an empirically based food web model of the Lake Superior offshore fish community. Stomachs were collected seasonally (spring, summer, and fall) from nine offshore locations in 2005, using bottom and midwater trawls. In total, 2643 stomachs representing 12 fish species were examined. The predominant fish species collected were deepwater sculpin (Myoxocephalus thompsonii), siscowet (Salvelinus namaycush siscowet), kiyi (Coregonus kiyi), and cisco (Coregonus artedi). Mysis diluviana was the most common prey item, indicating that changes in Mysis abundance could have a profound impact on the entire offshore food web. Mysis was the primary diet item of deepwater sculpin (? 53% by mass) and kiyi (? 96% by mass) regardless of depth or season. The invasive Bythotrephes was an important diet component of the pelagic cisco in summer and fall. Deepwater sculpin were the primary diet item of siscowet (? 52% by mass), with coregonines appearing in the diet of larger (> 400 mm) siscowet. Non-metric multidimensional scaling analysis indicated that there were no statistically significant seasonal or site-specific differences in diets of deepwater sculpin, cisco, or kiyi. Site was the primary structuring factor in siscowet diets. Generally, in Lake Superior, the diet items of the dominant offshore species did not appear to be in danger from those types of major ecological shifts occurring in the lower Laurentian Great Lakes.

Gamble, A.E.; Hrabik, T.R.; Stockwell, J.D.; Yule, D.L.

2011-01-01

232

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

233

Improving offshore communication by choosing the right coordination  

E-print Network

, organizational, and stakeholder distances influence negatively the communication and knowledge exchangeImproving offshore communication by choosing the right coordination strategy Matthias Fabriek;Improving offshore communication by choosing the right coordination strategy Page 2 of 92 ABSTRACT

Utrecht, Universiteit

234

FEED-IN TARIFFS AND OFFSHORE WIND POWER DEVELOPMENT  

E-print Network

FEED-IN TARIFFS AND OFFSHORE WIND POWER DEVELOPMENT Prepared by Jon Lilley, Blaise Sheridan, Dawn........................................................................................................................ 28 #12; 3 Feed-in Tariffs and Offshore Wind Power Development Prepared Pursuant to DOE Grant Em

Firestone, Jeremy

235

75 FR 30845 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...Guard [USCG-2010-0453] National Offshore Safety Advisory Committee AGENCY: Coast...teleconference meeting of the National Offshore Safety Advisory Committee (NOSAC) to...June 17, 2010. Written material for distribution to Committee members should reach...

2010-06-02

236

Using rainwear as switching jackets. A reasonable solution for electric arc exposure  

Microsoft Academic Search

LG&E has tested numerous types of clothing for worker protection under electric arc exposure situations and discusses the test methods used along with practical application of the ATPY (arc thermal protective value) and HAF (heat attenuation factor) results which are being reported by manufacturers of flame retardant (FR) clothing. This article focuses on the newly discovered and documented feasibility of

E. Hoagland

1997-01-01

237

The Georgia Tech Yellow Jackets: A Marsupial Team for Urban Search and Rescue  

E-print Network

Merrill, Lilia Moshkina, and Daniel Walker College of Computing, Georgia Institute of Technology Abstract consisting of a larger wheeled robot and several small legged robots, car- ried around by the larger robot. This setup exploits compli- mentary strengths of each robot type in a challenging domain. We describe both

Dellaert, Frank

238

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

Microsoft Academic Search

Optimizing 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 production is the metric by which a candidate layout is evaluated. The Offshore Wind Farm Layout Optimization (OWFLO) project instead uses the levelized production cost as the

Christopher N. Elkinton; James F. Manwell; Jon G. McGowan

239

Offshore wind energy systems for the U.K  

Microsoft Academic Search

Some of the more important factors affecting the design of offshore wind energy systems are discussed. It is shown that power densities in offshore winds are attractively high, of the order of 300 kW\\/linear meter (perpendicular to the wind direction). The economics of offshore operation strongly favors the use of large wind turbines (about 100 m diameter) and a low

P. J. Musgrove

1979-01-01

240

POWER - A METHODOLOGY FOR PREDICTING OFFSHORE WIND ENERGY RESOURCES  

Microsoft Academic Search

An accurate estimate of the long-term wind speed is essential to site an offshore wind farm effectively. Unfortunately measured wind speed data at potential offshore wind farm sites are currently sparse. A major European Commission funded project called 'Predicting Offshore Wind Energy Resources\\

G M Watson; J A Halliday; J P Palutikof; T Holt; R J Barthelmie; J P Coelingh; L Folkerts; G F M Wiegerinck; E J van Zuylen; J W Cleijne; G C S Hommel

241

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 harmonious function within the local grid Allows wind turbines to stay on line generating power, even during-savings feature, considering the rigors of offshore power generation. The 3.6 MW offshore wind turbine also

Firestone, Jeremy

242

Risk-based inspection planning optimisation of offshore wind turbines  

Microsoft Academic Search

Wind industry is substantially propelled and the future scenarios designate offshore locations as important sites for energy production. With this development, offshore wind farms represent a feasible option to accomplish the needed energy, bringing with it technical and economical challenges. Inspection and maintenance (I&M) costs for offshore sites are much larger than for onshore ones, making the choice of suitable

José G. Rangel-Ramírez; John D. Sørensen

2010-01-01

243

Seabed instability simplified model and application in offshore wind turbine  

Microsoft Academic Search

The offshore wind power is increasingly developed, it is essential to study the design technology of the offshore wind turbine foundation, which is crucial to reduce the construction cost of the offshore wind farm. In the design of marine pile foundations, the evaluation of wave-induced seabed stability is quite significant. Based on the mechanical properties of seabed, this article firstly

Zhang Yong-li; Li Jie

2009-01-01

244

Risk-based inspection planning optimisation of offshore wind turbines  

Microsoft Academic Search

Wind industry is substantially propelled and the future scenarios designate offshore locations as important sites for energy production. With this development, offshore wind farms represent a feasible option to accomplish the needed energy, bringing with it technical and economical challenges. Inspection and maintenance (I&M) costs for offshore sites are much larger than for onshore ones, making the choice of suitable

José G. Rangel-Ramírez; John D. Sørensen

2012-01-01

245

ForPeerReview PUBLIC ACCEPTANCE OF OFFSHORE WIND POWER  

E-print Network

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

Firestone, Jeremy

246

Are offshore power plants realistic. [Alternative to nuclear power plants  

Microsoft Academic Search

Offshore fossil-fueled electric power plants offer a positive alternative to nuclear proliferation, a viable technology for providing electricity to coastal cities. Such plants combine new technology from the offshore oil industry with efficient power generation techniques, are cheaper than nuclear plants, and could burn coal or solid waste or a mixture of both. Offshore power plants could utilize ocean water

Adler

1976-01-01

247

Evolution and Reduction of Scour around Offshore Wind Turbines  

Microsoft Academic Search

Evolution and Reduction of Scour around Offshore Wind Turbines In response to growing socio-economic and environmental demands, electricity generation through offshore wind turbine farms is a fast growing sector of the renewable energy market. Considerable numbers of offshore wind farms exist in the shallow continental shelf seas of the North-West Europe, with many more in the planning stages. Wind energy

David McGovern; Suzana Ilic

2010-01-01

248

76 FR 3919 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...affecting the oil and gas offshore industry. The purpose of...other concerns affecting the offshore oil and gas industry and assists...recommendations for standards for Offshore Supply Vessels with an International...2011. Written material for distribution to Committee members...

2011-01-21

249

75 FR 80064 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...affecting the oil and gas offshore industry. The purpose of...other concerns affecting the offshore oil and gas industry and assists...recommendations for standards for Offshore Supply Vessels with a gross...2011. Written material for distribution to Committee members...

2010-12-21

250

Offshore Aquaculture: The Frontier of Redefining Oceanic Property  

Microsoft Academic Search

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

Michael Skladany; Rebecca Clausen; Ben Belton

2007-01-01

251

Spacecraft attitude impacts on COLD-SAT non-vacuum jacketed LH2 supply tank thermal performance  

NASA Technical Reports Server (NTRS)

The Cryogenic On-Orbit Liquid Depot - Storage, Acquisition and Transfer (COLD-SAT) spacecraft will be launched into low earth orbit to perform fluid management experiments on the behavior of subcritical liquid hydrogen (LH2). For determining the optimum on-orbit attitude for the COLD-SAT satellite, a comparative analytical study was performed to determine the thermal impacts of spacecraft attitude on the performance of the COLD-SAT non-vacuum jacketed LH2 supply tank. Tank thermal performance was quantified by total conductive and radiative heat leakage into the pressure vessel due to the absorbed solar, earth albedo and infra-red on-orbit fluxes, and also by the uniformity of the variation of this leakage on the vessel surface area. Geometric and thermal analysis math models were developed for the spacecraft and the tank as part of this analysis, based on their individual thermal/structural designs. Two quasi-inertial spacecraft attitudes were investigated and their effects on the tank performance compared. The results are one of the criteria by which the spacecraft orientation in orbit was selected for the in-house NASA Lewis Research Center design.

Arif, Hugh

1990-01-01

252

Highwave off-shore energy hose  

Microsoft Academic Search

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

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

2011-01-01

253

Offshore Wind Power Farm Environmental Impact Assessment  

E-print Network

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

254

Risk analysis for Arctic offshore operations  

SciTech Connect

Offshore exploration for hydrocarbons is being conducted in the near-shore regions of the Beaufort Sea. This activity is expected to be intensified and expanded into the deeper portions of the Beaufort, as well as into the Chukchi Sea. The ice conditions in the Beaufort Sea are very variable, particularly in the deeper water regions. This variability greatly influences the probability of success or failure of an offshore operation. For example, a summer exploratory program conducted from a floating drilling unit may require a period of 60 to 100 days on station. The success of such a program depends on: (a) the time when the winter ice conditions deteriorate sufficiently for the drilling unit to move on station; (b) the number of summer invasions by the arctic ice pack, forcing the drilling unit to abandon station; (c) the rate at which first-year ice grows to the ice thickness limit of the supporting icebreakers; and (d) the extent of arctic pack expansion during the fall and early winter. In general, the ice conditions are so variable that, even with good planning, the change of failure of an offshore operation will not be negligible. Contingency planning for such events is therefore necessary. This paper presents a risk analysis procedure which can greatly benefit the planning of an offshore operation. A floating drilling program and a towing and installation operation for a fixed structure are considered to illustrate the procedure.

Slomski, S.; Vivatrat, V.

1986-04-01

255

Barge hull for offshore drilling rigs  

Microsoft Academic Search

An improved barge hull for offshore drilling rigs is disclosed. The invention comprises a channel in the bottom of a barge hull extending from the bottom of said barge hull to the back of said barge hull for directing the flow of water under said barge hull to the back of said barge hull in order to disrupt the relative

1984-01-01

256

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

257

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

258

Efficient high-permeability fracturing offshore  

SciTech Connect

Offshore operators can more efficiently and effectively perform high-permeability and conventional hydraulic fracture treatments by blending treatment slurries under microprocessor control, adding undiluted acid on-the-fly, and altering sand concentrations and other slurry properties instantaneously. A two-skid system has been designed with these considerations in mind. The system, which can be shipped efficiently in ISO containers, has been tested on fluids up to 210-cp viscosity and can step or ramp sand concentrations up to a maximum of 20 lb/gal. All additives, including acid treatments, are added on-the-fly; leftover additives and acids may be stored for future jobs. The system may be applied in most conditions, including offshore wells requiring conventional or high-permeability fracture treatments and certain land-based wells in remote areas where a compact skid is needed. Three significant benefits have resulted from using the compact-skid system: offshore operators have been able to ship the skid system at 20% of shipping costs of non-ISO equipment; on-the-fly mixing has prevented material waste associated with batch-mixing; and volumes pumped on actual jobs have closely matched job designs. Data have been collected from several Gulf of Mexico jobs run with the two-part skid system that has been designed for conducting hydraulic fracture treatments from offshore rigs.

Phillipi, M.; Farabee, M.

1996-12-31

259

Offshore oil and gas pipeline technology  

Microsoft Academic Search

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

Mare

1985-01-01

260

Wave Models for Offshore Wind Turbines  

Microsoft Academic Search

In the design of wind turbines—onshore or offshore—the prediction of extreme loads as- sociated with a target (long) return period requires statistical extrapolation from available loads data. The data required for such extrapolation are obtained by stochastic time- domain simulation of the inflow turbulence and of the turbine response. Prediction of accurate loads depends on assumptions made in the simulation

Puneet Agarwal; Lance Manuely

2008-01-01

261

Agile methods handling offshore software development issues  

Microsoft Academic Search

Agile methods have emerged as a new set of software development processes and practices, that cater requirements change by delivering the software in multiple small releases, increasing the client confidence and enables him\\/her to communicate the business requirements change at higher pace. On the other hand, technology world is switching to offshore software development rapidly due to global economic reasons.

M. F. Nisar; Tahir Hameed

2004-01-01

262

Offshore wind resource assessment through satellite images  

E-print Network

, Morten Nielsen, Sara Pryor Wind Energy Department European Geosciences Union (EGU) Nice, France, 25 angle Coefficients depend on radar incidence angle and wind speed OCEAN SEA BOTTOM CMOD4 Stoffelen et al1 Slide no. 4 Offshore wind resource assessment through satellite images Charlotte Bay Hasager

263

Human Rights, Academic Freedom, and Offshore Academics  

ERIC Educational Resources Information Center

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

Ross, Andrew

2011-01-01

264

Arctic offshore oil and gas technology  

SciTech Connect

This technical background briefing report is intended to assist in planning engineering research oriented toward Arctic offshore oil and gas recovery. The current five-year leasing schedule for the ice-prone waters of the Arctic offshore has been illustrated in Figure E-1. In Figure E-2 and Table I, the estimated reserves for these areas are given, based on National Petroleum Council estimates (December 1981). In view of the world petroleum situation since 1973, the probability of successful exploration and production from some areas of the Arctic offshore, at some time in the foreseeable future, is very high. The flow chart in Figure E-3 relates the special Arctic factors, such as ice and permafrost, to the normal petroleum production sequence. Other current technological frontiers are identified in the final section of this report. All of the subjects mentioned there should be advanced, to extract Arctic offshore oil and gas in an optimized and economic manner. Fortunately, the required technology is within reach. With the coordinated efforts of industry and government, and the allocation of sufficient resources in a timely manner, all of these technical advances can be accomplished in the decade ahead. 231 references, 134 figures, 1 table.

Sackinger, W.M.

1982-11-01

265

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

266

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

267

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

268

Probability distributions for offshore wind speeds  

Microsoft Academic Search

In planning offshore wind farms, short-term wind speeds play a central role in estimating various engineering parameters, such as power output, extreme wind load, and fatigue load. Lacking wind speed time series of sufficient length, the probability distribution of wind speed serves as the primary substitute for data when estimating design parameters. It is common practice to model short-term wind

Eugene C. Morgan; Matthew Lackner; Richard M. Vogel; Laurie G. Baise

2011-01-01

269

Offshore mussel aquaculture: new or just renewed?  

Microsoft Academic Search

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

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

2009-01-01

270

Experiment study on FLOATING JACKET: a new concept for deep water platform design  

E-print Network

for North Sea (W. J. Graff, 1981). Since fixed platforms were less flexible and not well suitable for deep water applications, various floating platforms including jack-up, floating ship type, semi- submersibles and submersibles have been developed over... ft) deep. In the center of the basin, there is rectangular pit with 9. 1 m (30 ft) long, 4. 6 m (15 ft) wide and 16 76 m (55 ft) deep. The layout of thc basin is illustrated in Figure 6. Wave generators with 48 single hinged flap wavcboards arc...

Xu, Yufeng

2012-06-07

271

Mapping Seabird Sensitivity to Offshore Wind Farms  

PubMed Central

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

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

2014-01-01

272

Ice island creation, drift, recurrences, mechanical properties, and interactions with arctic offshore oil production structures. Final report  

SciTech Connect

Research and engineering studies on first-year sea ice for over two decades has resulted in the design, construction, and operation of jacket platforms, of artificial islands, and of massive gravity structures which routinely withstand moving sea ice of thickness up to 2 meters. However, the less-common interactions between such structures and moving multiyear ice ({ge}3 meters thick), and also moving ice islands (10 to 60 meters thick) remain as the unknown and potentially most serious hazard for Arctic offshore structures. In this study, research was addressed across the complete span of remaining questions regarding such features. Ice island components, thickness distributions, scenarios and models for the interactions of massive ice features with offshore structures, all were considered. Ice island morphology and calving studies were directed at the cluster of 19 ice islands produced in a calving from the Ward Hunt Ice Shelf on Ellesmere Island in 1983, and also at a calving from the Milne Ice Shelf in 1988. The statistics of ice island dynamics, on both a short-term small-scale basis and also on a long-term basis, were studied. Typical wind velocities of 5 to 7.5 meters per second led to ice island speeds of about 0.014 of the wind speed, at an angle of 20{degrees} to the right of the wind direction. Ice island samples were tested for their stress/strain characteristics. Compressive strength values ranged from 1.64 MPa at a strain rate of 2 {times} 10{sup {minus}7} s{sup {minus}1} to 6.75 MPa at a strain rate of 1 {times} 10{sup {minus}3} s{sup {minus}1}. Scenarios for ice island/structure interactions were developed, and protective countermeasures such as spray ice and ice rubble barriers were suggested. Additional computer modeling of structure/ice interactions for massive ice features is recommended.

Sackinger, W.M.; Jeffries, M.O.; Li, Fucheng; Lu, Mingchi

1991-03-01

273

How to make offshore marginal fields work for everyone  

SciTech Connect

Marginal fields make positive impact on certain oil and gas companies` financial performances. These developments are integrated into the operator`s operational and philosophical mindset, so that they optimize return and establish a reasonable reserve base for the company. Having a portfolio of marginal field developments is definitely a part of the offshore business, and oil field suppliers and subcontractors will continue to develop technology and methods to ensure the fields are exploited. It goes without saying that the continued production of marginal fields helps a lot of consumers and the companies that make up the energy chain that gets it to them. There are marginal fields all over the world and the market can only grow as more and more of the resources decline and industrialization expands demand. The projections for 2020 state that fossil fuels will remain the major supply link to dependable and affordable energy, particularly as additional oil and gas infrastructures are built and installed. Likened to the commodity, oil and gas companies and the energy industry have slowly evolved to the point where they are making a difference for people worldwide. As long as there is product to produce, most companies and consumers do not really care what type of reservoir started it all. More often then not, it probably started out as a marginal prospect. The paper discusses the energy picture today, marginal field update, offshore marginal field geography, and independent and marginal field developments.

Blandford, P.R. [Atlantia Energy Corp., Houston, TX (United States)

1995-12-31

274

Final Report DE-EE0005380: Assessment of Offshore Wind Farm Effects on Sea Surface, Subsurface and Airborne Electronic Systems  

SciTech Connect

Offshore wind energy is a valuable resource that can provide a significant boost to the US renewable energy portfolio. A current constraint to the development of offshore wind farms is the potential for interference to be caused by large wind farms on existing electronic and acoustical equipment such as radar and sonar systems for surveillance, navigation and communications. The US Department of Energy funded this study as an objective assessment of possible interference to various types of equipment operating in the marine environment where offshore wind farms could be installed. The objective of this project was to conduct a baseline evaluation of electromagnetic and acoustical challenges to sea surface, subsurface and airborne electronic systems presented by offshore wind farms. To accomplish this goal, the following tasks were carried out: (1) survey electronic systems that can potentially be impacted by large offshore wind farms, and identify impact assessment studies and research and development activities both within and outside the US, (2) engage key stakeholders to identify their possible concerns and operating requirements, (3) conduct first-principle modeling on the interactions of electromagnetic signals with, and the radiation of underwater acoustic signals from, offshore wind farms to evaluate the effect of such interactions on electronic systems, and (4) provide impact assessments, recommend mitigation methods, prioritize future research directions, and disseminate project findings. This report provides a detailed description of the methodologies used to carry out the study, key findings of the study, and a list of recommendations derived based the findings.

Ling, Hao [The University of Texas at Austin] [The University of Texas at Austin; Hamilton, Mark F. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Bhalla, Rajan [Science Applications International Corporation] [Science Applications International Corporation; Brown, Walter E. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Hay, Todd A. [The University of Texas at Austin Applied Research Laboratories] [The University of Texas at Austin Applied Research Laboratories; Whitelonis, Nicholas J. [The University of Texas at Austin] [The University of Texas at Austin; Yang, Shang-Te [The University of Texas at Austin] [The University of Texas at Austin; Naqvi, Aale R. [The University of Texas at Austin] [The University of Texas at Austin

2013-09-30

275

Self-contained offshore platform  

SciTech Connect

A self-contained jack up type drilling and production platform structure comprising a flotatable barge-like hull with support legs which can be jacked up and down to lower and raise the hull with respect to the surface of the sea. A removeable drilling module rests on top of the hull and extends over an opening therein between two of the support legs. Production equipment is arranged in the hull and communicates with the opening. Moveable conductor supports extend between the legs of the platform and serve to brace the drill string and production conduit conductors.

Evans, D.L.

1980-10-14

276

Paraffin deposition in offshore oil production  

E-print Network

PARAFFIN DEPOSITION IN OFFSHORE OIL PRODUCTION A Thesis by G E R A L D M A S O N E L P H I N G S T O N E J R . Submitted to the Office of Graduate Studies of Texas A & M Univers i ty in part ial fulfillment of the requirements for the degree... of M A S T E R O F S C I E N C E May 1995 Major Subject: Chemica l Engineering PARAFFIN DEPOSITION IN OFFSHORE OIL PRODUCTION A Thesis by G E R A L D M A S O N E L P H I N G S T O N E J R . Submitted to Texas A & M University in part ial...

Elphingstone, Gerald Mason

2012-06-07

277

New technology emphasizes international offshore effort  

SciTech Connect

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

NONE

1997-07-01

278

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

279

Improved thermoplastic materials for offshore flexible pipes  

SciTech Connect

Long-term aging tests representative of field operating conditions have been conducted on various thermoplastic materials proposed for the inner tube of flexible pipes for offshore drilling and production applications. In particular, experimental data are provided about the changes of the mechanical properties of selected thermoplastic materials owing to optimized formulation when the pipes are exposed over time to crude oil in the presence of gas and water.

Dawans, F.; Jarrin, J.; Hardy, J.

1988-08-01

280

Barge hull for offshore drilling rigs  

SciTech Connect

An improved barge hull for offshore drilling rigs is disclosed. The invention comprises a channel in the bottom of a barge hull extending from the bottom of said barge hull to the back of said barge hull for directing the flow of water under said barge hull to the back of said barge hull in order to disrupt the relative hydrodynamic stability of a body of water immediately behind said barge hull and thereby decrease the towing resistance of said barge hull.

Lorenz, D.B.

1984-06-19

281

Offshore drilling boom expanding in Alaska  

SciTech Connect

A fleet of six drilling vessels moved into the Bering Sea in 1984, starting the biggest offshore drilling boom in Alaska's history. Despite the lack of discoveries most of the activity is centered on the Navarin Basin, which is regarded as the most promising of the Bering Sea basins. Assuming there are commercial discoveries, development of the Navarin riserves appears feasible through evolution of North Sea and Cook Inlet platform technology.

Not Available

1985-01-01

282

Arctic and offshore research: Technology status report  

SciTech Connect

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

Not Available

1988-01-01

283

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

284

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

285

The wind speed profile at offshore wind farm sites Bernhard Lange(1)  

E-print Network

The wind speed profile at offshore wind farm sites Bernhard Lange(1) , Søren E. Larsen(2) , Jørgen feasibility of offshore wind power utilisation depends on the favourable wind conditions offshore compared in Europe will come from offshore sites. The first large offshore wind farms are #12;currently being built

Heinemann, Detlev

286

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

287

A Brief History of the New England Offshore Fisheries  

E-print Network

A Brief History of the New England Offshore Fisheries By Albert C. Jensen UNITED STATES DEPARTMENT BERIE. onald L. :'.lcK rnan, Dir dor A Brief History of the New England Offshore Fisheries By ALBER T C · · · · · · · · · · 0 · 0 · · · · · · · · · · 111 12 14 #12;A Brief History of the New England Offshore Fisheries

288

Compensation technology for a novel reflex optical fiber temperature sensor used under offshore oil well  

Microsoft Academic Search

We propose a semiconductor absorption optical fiber temperature sensor adapted to offshore explorations. The sensing mechanism relies on the well-known temperature induced shift of the optical absorption edge of GaAs. The sensor system uses a common-path reference measurement method combined with a node-type error compensation technology. This allows to correct for errors caused by fluctuations of the light intensity level,

Yong Zhao; Yanbiao Liao

2003-01-01

289

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

290

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

Code of Federal Regulations, 2010 CFR

... false Fees for examination of foreign mobile offshore drilling units. 2.10-130...10-130 Fees for examination of foreign mobile offshore drilling units. Each foreign mobile offshore drilling unit must pay:...

2010-10-01

291

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

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Officer endorsements for mobile offshore drilling units. 11.468...11.468 Officer endorsements for mobile offshore drilling units. Officer endorsements for service on mobile offshore drilling units...

2010-10-01

292

Toward Visualization and Analysis of Traceability Relationships in Distributed and Offshore Software  

E-print Network

Toward Visualization and Analysis of Traceability Relationships in Distributed and Offshore Relationships, Dependencies, Visualization, Distributed and Global Software Development, Offshore Software@ics.uci.edu Abstract. Offshore software development projects provoke new issues to the collaborative endeavor

Redmiles, David F.

293

Survey report of offshore wind conditions in prospect of offshore wind energy conversion systems in Japan  

Microsoft Academic Search

Wind energy is viewed as a promising new energy resource in its pure, clean, and inexhaustible nature. Because of less disturbed, stable and strong wind conditions, coastal areas are considered to be suitable for constructing wind energy systems. Moreover, it is said that offshore wind conditions are better than inshore wind conditions for power generation. However, actual measured reports of

K. Nishi; S. Shiraishi; M. Hamano; Y. Umeki; H. Kume

2004-01-01

294

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

Microsoft Academic Search

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

Bela Hieronymus Buck; Cornelia Maria Buchholz

2004-01-01

295

Aluminium alloys for offshore drilling systems  

SciTech Connect

This paper presents the experience gained in the USSR (now CIS) over many years in the use of Aluminum Drill Pipe (ADP). The main advantages of aluminum over steel for drill pipe applications are discussed. Methods of fabricating aluminum pipes with steel tool joints are explained. The problems of abrasion and corrosion resistance are presented. Recent experience testing ADP after exposure to the offshore environment have shown negligible reduction in fatigue life. It is now considered possible to design a slimline riser in aluminum for water depths of 3--4 kilometers.

Fine, G.M.; Basovich, V.S.; Pisarnitsky, A.D. [Superdeep Co. Zapolyarny, Murmansk (Russian Federation); Jemetz, B.V.; Mazurova, L.D. [VNIITNEFT, Samara (Russian Federation); Gelfgat, M.Ya. [Aquatic Co., Moscow (Russian Federation)

1995-12-31

296

Offshore installation and maintenance of submersible pumps  

SciTech Connect

Pertamina/IIAPCO operates a large offshore production complex in the Southeast Sumatra Contract Area of Indonesia. The use of submersible centrifugal electric pumps both for artificial lift and for pipeline transfer of produced fluids has played an important role in the success enjoyed by this contract area during its 10-year producing life. This paper describes the conditions and considerations contributing to the initial selection and eventual standardized use of these pumps by the company. Also included are a discussion of operational experience gained and a summary of the submersible pumps' performance record.

Verdina, G.G.

1983-01-01

297

Flow line riser for offshore structure  

SciTech Connect

Riser for an offshore marine platform which includes facilities to receive, treat, and/or store hydrocarbon fluid from a plurality of dispersed submerged wells. The riser includes means to accommodate a plurality of conduits between the platform deck and the floor of the body of water. As a rigid, or non-rigid conduit is pulled downwardly through the riser, it engages a deflecting shoe. The latter deflects the pulled conduit into a direction away from the platform and along the ocean floor, whereby it can readily engage a pipeline, or attach to one of the dispersed wells.

Knowles, J. P.; Mitchell, S. D.; Wheeler, S.

1985-05-28

298

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

299

COST REDUCTION PROSPECTS FOR THE OFFSHORE WIND ENERGY SECTOR  

Microsoft Academic Search

The economics of offshore wind energy are (currently) less favorable than for onshore wind energy and there is a strong need for significant cost reductions in order to become competitive with fossil fuel sources. As about 70% part of the electricity cost is determined by the initial investment costs, we explored the ranges of possible cost reductions of offshore wind

M. Junginger

300

New Horizons for Offshore Wind Energy: Shifting Paradigms and Challenges  

Microsoft Academic Search

The placing of wind turbines offshore is likely to lead to developments of the technology as far-reaching as those which turned the crude onshore machines of the early 1980s into the elegant giants of today. This article discusses the acute need of development of offshore wind energy converting systems. The development of different design techniques and the economics of these

T. S. BHATTI; D. P. KOTHARI

2005-01-01

301

Assessment of off-shore wind farms in Malaysia  

Microsoft Academic Search

A lot of attention is being paid to wind energy due to the focus on renewable energy. Malaysia is situated in the equatorial region and its climate is governed by the monsoons. Wind resource in Malaysia varies from one location to another. Wind speed is better offshore compared to onshore, so more contribution by offshore wind powers in terms of

S. Mekhilef; D. Chandrasegaran

2011-01-01

302

Offshore wind farms in Italy: the Sicily case  

Microsoft Academic Search

Today in the research for new energies, the wind rep resents a powerful source of energy, especially if used offshore. Because of the high initial investments, it is necessary to study the feasibility of the pot ential project. For Italy, the best places set up offshore wind far m are in Sardinia and Sicily. The studies carried out by Project

Cecilia Camporeale

2006-01-01

303

Offshore oil and gas: global resource knowledge and technological change  

Microsoft Academic Search

It is argued that the contribution of technological change to the offshore oil and gas industry's progress is under-researched. As a prelude this theme, the changing geography of known offshore oil and gas resources is reviewed. Significant, and largely technologically dependent, developments are identified in terms of the industry's global spread, its extension into deep and ultradeep waters and its

David Pinder

2001-01-01

304

Structural monitoring of offshore platforms using impulse and relaxation response  

Microsoft Academic Search

Monitoring offshore platforms, long span bridges, high rise buildings, TV towers and other similar structures is essential for ensuring their safety in service. Continuous monitoring assumes even greater significance in the case of offshore platforms, which are highly susceptible to damage due to the corrosive environment and the continuous action of waves. Also, since a major part of the structure

Lalu Mangal; V. G Idichandy; C Ganapathy

2001-01-01

305

Integrated Multidisciplinary Constrained Optimization of Offshore Support Structures  

E-print Network

Integrated Multidisciplinary Constrained Optimization of Offshore Support Structures Rad Haghi1 structure more positively. Previous studies show the advantages of the integrated design with either limited.haghi@siemens.com Abstract. In the current offshore wind turbine support structure design method, the tower and foundation

Papalambros, Panos

306

Bank secrecy, illicit money and offshore financial centers  

Microsoft Academic Search

This paper discusses the effects of pressure policies on offshore financial centers as well as their ability to enforce the compliance of those centers with anti-money laundering regulations. Offshore banks can be encouraged to comply with rigorous monitoring of an investor's identity and the origin of his\\/her funds when pressure creates a sufficiently high risk of reputational harm to the

Pierre M. Picard; Patrice Pieretti

2011-01-01

307

Bank secrecy, illicit money and offshore financial centers  

Microsoft Academic Search

This paper discusses the effects of pressure policies on offshore financial centers as well as their ability to enforce the compliance of those centers with anti-money laundering regulations. Offshore banks can be encouraged to comply with rigorous monitoring of an investor's identity and the origin of his\\/her funds when pressure creates a sufficiently high risk of reputational harm to the

Pierre PICARD; Patrice PIERETTI

2010-01-01

308

DISCIPLINER LES CENTRES FINANCIERS OFFSHORE : INCITATION PAR LA PRESSION INTERNATIONALE  

Microsoft Academic Search

Since Offshore Financial Centers (OFCs) generally provide bank secrecy to foreign investors they are likely to attract criminal money. Recently however, academic writings have pointed to the fact that OFCs might have beneficial economic effects. In this context, we address the question whether pressure exerted by international organizations on offshore financial centers may be effective enough to enforce compliance with

Arnaud BOURGAIN; Patrice PIERETTI

2007-01-01

309

Northwest Sumatra and Offshore Islands Field Survey after the December  

E-print Network

Northwest Sumatra and Offshore Islands Field Survey after the December 2004 Indian Ocean Tsunami on the west coast of northern and central Sumatra and offshore islands 3­4 months after the 26 December 2004 Islands, and included 22 sites in Aceh province in Sumatra and on Simeulue Island, Nias Island, the Banyak

310

Quantifying the Benefits of Combining Offshore Wind and Wave Energy  

Microsoft Academic Search

For many locations the offshore wind resource and the wave energy resource are collocated, which suggests a natural synergy if both technologies are combined into one offshore marine renewable energy plant. Initial meteorological assessments of the western coast of the United States suggest only a weak correlation in power levels of wind and wave energy at any given hour associated

E. Stoutenburg; M. Z. Jacobson

2009-01-01

311

Offshoring and Transfer of Intellectual Property Gio Wiederhold  

E-print Network

deals well with issues of job loss and job creation, its title: "Globalization and Offshoring that participates in offshoring. Many enterprises, involved in the creation and use of software, are similarly cases, the destination for valuable IP is a Controlled Foreign Corporation (CFC), owned and controlled

Wiederhold, Gio

312

Design of support structures for offshore wind turbines  

Microsoft Academic Search

To meet growing energy demands, the Kyoto protocol and the much desired diversification of supply, wind energy has become a mainstream source of energy in the EU. Cost wise it is already competing with gas fired electricity. In the last decade wind moved offshore to accommodate even more wind power. The offshore wind resource is more abundant and of a

J. van der Tempel

2006-01-01

313

Offshore oil and gas occupational accidents—What is important?  

Microsoft Academic Search

Occupational accidents continue to present a problem to industry in general and the offshore oil and gas business in particular. To address this concern, a quantitative model capable of predicting occupational accident frequency in the offshore petroleum industry is being developed. The model offers a means to optimise safety spending, thereby maximising benefits to personnel and the organisation. As input

Daryl Attwood; Faisal Khan; Brian Veitch

2006-01-01

314

Experience of executing fixed price off-shored agile project  

Microsoft Academic Search

Organizations delivering offshore software development services have traditionally focused on CMMI framework to deliver quality software. With agile methodologies gaining more wide spread acceptance, such organizations cannot stay away from them. There are concerns about combining agile methodologies with offshoring. There are also concerns about mismatch of agile methodologies with CMMI framework. In this paper we have looked at the

Udayan Banerjee; Eswaran Narasimhan; N. Kanakalata

2011-01-01

315

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 Mapping and Prediction Using LIDAR, Aircraft, and In-Ocean Observations Dr. Brian A. Colle Stony Brook

Firestone, Jeremy

316

E2I EPRI Assessment Offshore Wave Energy Conversion Devices  

E-print Network

, government/industry, public/private collaborative program to assess and demonstrate the feasibilityE2I 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

317

Globalization and Offshoring of Software Moshe Y. Vardi  

E-print Network

Globalization and Offshoring of Software Moshe Y. Vardi Rice University #12;Whoosh . . . · 1992, Europeans 2 #12;Early Decisions · Co-chairs: Mayadas+Vardi. Editor: Aspray · Global perspective · Secondary-Home Points · Offshoring is just a symptom, the issue is globalization. · We enabled it. Now we have to live

Vardi, Moshe Y.

318

Panel 2A: offshore oil and gas technology assessment  

SciTech Connect

The status of offshore oil and natural gas technology is reviewed, particularly as it pertains to deepwater and Arctic frontier areas of the U.S. Outer Continental Shelf. Offshore platforms, pipelines, tanker loading systems, and subsea support systems are discussed. Research and development activities of the petroleum industry, the U.S. Government, and the governments around the North Sea are briefly discussed.

Crooke, R.C.; Otteman, L.G.

1984-01-01

319

On the Modelling of a Floating Offshore Wind Turbine  

Microsoft Academic Search

The location of wind turbines on floating structures offshore would allow an immense resource to be tapped without the drawbacks large developments can have on public opinion. There are, however, potentially significant technical and cost drawbacks. This article describes the theory and results of research work aimed at developing analytical tools for evaluating the performance of floating offshore wind farms.

Andrew R. Henderson; Minoo H. Patel

2003-01-01

320

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 an offshore wind farm, accurate assessment of the wind resource/power output from the wind farm is a necessity. Accurately predicting the power output requires an estimate of the wind resource over the lifetime

Pryor, Sara C.

321

Offshore Wind Power Experiences, Potential and Key Issues for  

E-print Network

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

322

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

323

Maintenance strategies for deep-sea offshore wind turbines  

Microsoft Academic Search

Purpose – The objective of this paper is to outline a framework that guides the development of sound maintenance strategies and policies for deep-sea offshore wind turbines. Design\\/methodology\\/approach – An important challenge with offshore wind energy production is to reduce the high operation and maintenance costs. To decrease complexity, and structure the maintenance strategy developing process, systems engineering principles are

Ingrid Bouwer Utne

2010-01-01

324

47 CFR 22.1007 - Channels for offshore radiotelephone systems.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Channels for offshore radiotelephone...Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED...Service § 22.1007 Channels for offshore radiotelephone...operating on interstitial channels must be used only for voice grade general communications or to provide for...

2010-10-01

325

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

326

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 behaviour · Redundant system to secure stable, reliable data access · Online data distribution to the rig

Nørvåg, Kjetil

327

A Risk Assessment Model for Offshoring Using CMMI Quantitative Approach  

Microsoft Academic Search

Risk analysis and assessment obviously provides valuable insights to offshoring projects to identify and evaluate the magnitude of risks associated with the activities and the work products being considered. In offshoring software industry, successful execution of risk analysis drastically relies on strong software process skills and management skills to resolve the differences in cultures, languages, time zones, and development which

Morakot Choetkiertikul; Thanwadee Sunetnanta

2010-01-01

328

Contribution of offshore petroleum deposits to marine food chain  

Microsoft Academic Search

Petroleum production out of offshore petroleum deposits often coincides with abundant fisheries in the world. Superposition of marine microorganism concentration distribution and offshore petroleum field distribution from various data in the literature provides to prove this coincidence. Sakhalin Island coastal regions, North Sea, Gulf of Mexico, etc. are chosen for the superpositions. Significant conformity is observed between the plankton concentration

S. Mori

2009-01-01

329

Bedout: A Possible End-Permian Impact Crater Offshore of  

E-print Network

Bedout: A Possible End-Permian Impact Crater Offshore of Northwestern Australia L. Becker,1 * R. J, and spherulitic glass. The distribution of glass and shocked minerals over hundreds of meters of core material") High offshore of northwest- ern Australia might be the central uplift of a large end-Permian impact

Basu, Asish R.

330

DISTRIBUTED OPTIMIZATION AND CONTROL OF OFFSHORE OIL PRODUCTION: THE INTELLIGENT  

E-print Network

DISTRIBUTED OPTIMIZATION AND CONTROL OF OFFSHORE OIL PRODUCTION: THE INTELLIGENT PLATFORM Michael R to distributed optimization and control of offshore oil production systems. The model incorporates a complex. The proposed distributed controller network can be seen as a special case of a Multi Agent System (MAS

Foss, Bjarne A.

331

Influence of Subsea Cables on Offshore Power Distribution Systems  

Microsoft Academic Search

Subsea cable applications for the offshore power distribution systems create technical challenges in the system design, operation and maintenance. Harmonic parallel resonance introduced by subsea cables is one of the main concerns. In this paper, parallel resonance is investigated for an offshore distribution system with lengthy subsea cables on four interconnected platforms. Variable frequency drives are the dominant loads on

Xiaodong Liang; William Jackson

2008-01-01

332

Influence of Subsea Cables on Offshore Power Distribution Systems  

Microsoft Academic Search

Subsea cable applications for the offshore power distribution systems create technical challenges in the system design, operation, and maintenance. Harmonic parallel resonance introduced by subsea cables is one of the main concerns. In this paper, parallel resonance is investigated for an offshore distribution system with lengthy subsea cables on four interconnected platforms. Variable frequency drives (VFDs) are the dominant loads

Xiaodong Liang; William Michael Jackson

2009-01-01

333

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

334

Copyright 1999, Offshore Technology Conference This paper was prepared for presentation at the 1999 Offshore Technology Conference held in  

E-print Network

Offshore Technology Conference held in Houston, Texas, 3­6 May 1999. This paper was selected in the development of marginal fields. Whilst pile design procedures evolved smoothly from onshore experience and theory, design of shallow foundation systems has had to be re-examined in light of the intense offshore

Byrne, Byron

335

Three years' experience with the offshore self-boring pressuremeter ''PAM''  

SciTech Connect

The Offshore Self-Boring Pressuremeter (PAM) has been developed by the Institut Francais du Petrole for geotechnical investigations in water depths up to 1000 meters. The PAM was first presented at the 1981 OTC. It mainly consists of a seabed frame from which a self-boring pressuremeter probe is operated. To date, the PAM has totaled nearly 450 meters of borehole depth and more than 200 pressuremeter tests. Investigations have been performed in a wide variety of soil types. The latest deepwater campaign was carried out successfully in the Mediterranean at a water depth of 625 meters. Extensive geotechnical information is obtained from a PAM boring operation. The use of the pressuremeter method for offshore investigations and foundation designing should open up very interesting prospects.

Brucy, F.; Fay, J.B.; LeTirant, P.

1984-05-01

336

STRESS CORROSION OF TYPE 304 STAINLESS STEEL IN SIMULATED SUPERHEAT REACTOR ENVIRONMENTS. I. Informal AEC Research and Develoment Report 568-TIO-2  

Microsoft Academic Search

A fuel jacket failure that occurred in May 1961 in the Type 304 ; stainless steel clad fuel element exposed in the Vallecitos Boiling Water Reactor ; superheated steam loop (SADE) was attributed to chloride stress corrosion ; cracking. In order to better understand the failure, a test program was carried ; out to try to reproduce the rapid stress

G. G. Gaul; W. L. Pearl; M. Siegler

1962-01-01

337

EARTHQUAKE HAZARDS IN THE OFFSHORE ENVIRONMENT.  

USGS Publications Warehouse

This report discusses earthquake effects and potential hazards in the marine environment, describes and illustrates methods for the evaluation of earthquake hazards, and briefly reviews strategies for mitigating hazards. The report is broadly directed toward engineers, scientists, and others engaged in developing offshore resources. The continental shelves have become a major frontier in the search for new petroleum resources. Much of the current exploration is in areas of moderate to high earthquake activity. If the resources in these areas are to be developed economically and safely, potential earthquake hazards must be identified and mitigated both in planning and regulating activities and in designing, constructing, and operating facilities. Geologic earthquake effects that can be hazardous to marine facilities and operations include surface faulting, tectonic uplift and subsidence, seismic shaking, sea-floor failures, turbidity currents, and tsunamis.

Page, Robert A.; Basham, Peter W.

1985-01-01

338

Meren field water injection project offshore Nigeria  

SciTech Connect

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

Adetoba, L.A.

1984-04-01

339

Storage of Carbon Dioxide in Offshore Sediments  

NASA Astrophysics Data System (ADS)

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.

Schrag, Daniel P.

2009-09-01

340

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

341

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

342

Medical support by a team of doctors to offshore paramedics.  

PubMed

The experience of one team of doctors supporting offshore paramedics in the North Sea is described. During 1985 all cases for which radio advice from a doctor was sought by offshore paramedics and all cases referred for examination by a doctor were analysed. Of the 743 cases 528 (71%) were referred for examination by a doctor and for 215 (29%) the offshore paramedics sought radio advice only. Injury formed the largest category of disorder for both groups of cases. The majority of patients referred for examination were seen in the doctor's surgery and following examination over half were cared for at home by their own general practitioner. PMID:3694575

Phillips, J C

1987-04-01

343

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 of wind energy utilisation at least in Europe will come from offshore sites. The first large offshore wind

Heinemann, Detlev

344

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

Microsoft Academic Search

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

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

2011-01-01

345

READINESS AND MINDSET FOR IT OFFSHORING: INSIGHTS FROM BANKING AND INSURANCE ORGANIZATIONS  

Microsoft Academic Search

In this research we examine the IT offshore outsourcing (offshoring) practice of a number of leading finance and insurance organizations in the Netherlands. In particular, we investigate the readiness (the state, condition or quality of being ready) and mindset (habits, opinions which affect a person's attitudes) of the organizations for IT offshoring. We examine IT offshoring practice from the process

Mehmet N. Aydin; Jos van Hillegersberg

346

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

Federal Register 2010, 2011, 2012, 2013

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

2010-01-05

347

Offshoring and the global distribution of work: Implications for task interdependence theory and practice  

Microsoft Academic Search

A recent Offshoring Research Network (ORN) global survey of offshoring shows that since 2004 management concerns about operational issues on achieving the benefits of offshoring have increased significantly. In this paper we examine inter-task interdependence, a key operational determinant of inter-site interaction and communications in offshoring. We analyze existing theories of interdependence to examine the extent to which they provide

Kuldeep Kumar; Paul C van Fenema; Mary Ann von Glinow

348

Offshoring and the global distribution of work: Implications for task interdependence theory and practice  

Microsoft Academic Search

A recent Offshoring Research Network (ORN) global survey of offshoring shows that since 2004 management concerns about operational issues on achieving the benefits of offshoring have increased significantly. In this paper we examine inter-task interdependence, a key operational determinant of inter-site interaction and communications in offshoring. We analyze existing theories of interdependence to examine the extent to which they provide

Kuldeep Kumar; Paul C van Fenema; Mary Ann von Glinow

2009-01-01

349

Analysis of Acoustic Wave and Current Data Offshore of Mytle Beach, South Carolina  

NASA Astrophysics Data System (ADS)

Two bottom boundary layer (BBL) instrument frames have been deployed on the shoreface and inner-shelf of Long Bay, South Carolina offshore of Myrtle Beach as part of a South Carolina Sea Grant funded project to measure sediment transport over two hardbottom habitats. The inshore instrument frame is located on an extensive hardbottom surface 850 meters offshore. The second instrumented frame is secured to a hardbottom surface on the inner-shelf at a distance of approximately 2.5 km offshore. The nearshore BBL observing system is composed of a downward-looking RDI/ Teledyne 1200 kHz Pulse-Coherent Acoustic Doppler Current Profiler, an upward-looking Nortek Acoustic Wave and Current Profiler (AWAC), and an Aquatec Acoustic Backscatter Sensor. As part of this larger study, the wave and current data from the AWAC have been analyzed. Long-term continuous time series data include wave height, wave period, directional wave spectra, and the magnitude and direction of currents in the water column. Within the data set are several wave events, including several frontal passages and Tropical Storm Hanna which hit the Myrtle Beach area in early September. Wave data have been correlated with meteorological data, and a comparison of shoreface wave characteristics during each type of event are presented.

Fall, K. A.; Wren, A.

2008-12-01

350

Development of a composite repair system for reinforcing offshore risers  

E-print Network

A research program was conducted to investigate the application of composite materials in repairing corroded offshore risers, leading to the development of an optimized repair using a hybrid carbon/E-glass system. The objective of this research...

Alexander, Christopher Richard

2009-05-15

351

Reliability-based Design of Offshore Mooring Systems  

E-print Network

This study proposes new methods for the reliability-based design of structural systems, with emphasis on offshore mooring systems. After a brief introduction to the mooring systems, two main objectives are discussed in this dissertation. The first...

Mousavi, Mir Emad

2013-02-05

352

OUTSHORE Maturity Model: Assistance for Software Offshore Outsourcing Decisions  

NASA Astrophysics Data System (ADS)

Offshore outsourcing software development (OOSD) is increasingly being used by the Software Industry. OOSD is a specific variant of Geographically Distributed Software Developmentdistributed software development (GDSD). Compared to the traditional mode of software development (i.e., in-house) GDSD is more edgy and puts at risk the attainment of the expected results. Although the failure of an offshore outsourcing software project may be caused by a variety of factors, one major complication is geographical distance. Consequently we argue that risk avoidance in outshore software development should be undertaken well in advance of the development launch. This could be done by testing the offshore outsourcing relevance of each software project and then the offshore outsourcing company involved. With this in mind we have developed the OUTSHORE Maturity Modeloutshore maturity model - OMM.

Mäkiö, Juho; Betz, Stafanie; Oberweis, Andreas

353

76 FR 62817 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...The National Offshore Safety Advisory Committee...on regulating worker safety in connection with the...10) EO 13580--Domestic Energy Development and...activities of Ocean Energy Safety Advisory Committee...of Liquefied Natural Gas (LNG) as fuel for...

2011-10-11

354

75 FR 12772 - National Offshore Safety Advisory Committee; Meeting  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HOMELAND SECURITY Coast Guard [USCG-2010-0127] National...issues relating to offshore safety and security. The meeting will be open to the public...the Waterbury Ballroom of the Sheraton Hotel and Conference Center, 500 Canal...

2010-03-17

355

78 FR 34115 - National Offshore Safety Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...The National Offshore Safety Advisory Committee...on commercial diving safety to consider recommendations...for commercial diving operational standards. This teleconference...on commercial diving safety to consider recommendations...improved commercial diving operational standards. (3)...

2013-06-06

356

Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm  

E-print Network

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

357

A wind chart to characterize potential offshore wind energy sites  

NASA Astrophysics Data System (ADS)

Offshore wind industry needs to improve wind assessment in order to decrease the uncertainty associated to wind resource and its influence on financial requirements. Here, several features related to offshore wind resource assessment are discussed, such as input wind data, estimation of long-term and extreme wind statistics, the wind profile and climate variations. This work proposes an analytical method to characterize wind resource. Final product is a wind chart containing useful wind information that can be applied to any offshore sites. Using long-term time series of meteorological variables (e.g. wind speed and direction at different heights), the methodology is applied to five pilot sites in different countries along European Atlantic corridor and it is used to describe and compare offshore wind behavior.

del Jesus, F.; Menéndez, M.; Guanche, R.; Losada, I. J.

2014-10-01

358

Dependence of offshore wind turbine fatigue loads on atmospheric stratification  

NASA Astrophysics Data System (ADS)

The stratification of the atmospheric boundary layer (ABL) is classified in terms of the M-O length and subsequently used to determine the relationship between ABL stability and the fatigue loads of a wind turbine located inside an offshore wind farm. Recorded equivalent fatigue loads, representing blade-bending and tower bottom bending, are combined with the operational statistics from the instrumented wind turbine as well as with meteorological statistics defining the inflow conditions. Only a part of all possible inflow conditions are covered through the approximately 8200 hours of combined measurements. The fatigue polar has been determined for an (almost) complete 360° inflow sector for both load sensors, representing mean wind speeds below and above rated wind speed, respectively, with the inflow conditions classified into three different stratification regimes: unstable, neutral and stable conditions. In general, impact of ABL stratification is clearly seen on wake affected inflow cases for both blade and tower fatigue loads. However, the character of this dependence varies significantly with the type of inflow conditions - e.g. single wake inflow or multiple wake inflow.

Hansen, K. S.; Larsen, G. C.; Ott, S.

2014-06-01

359

Offshore data base shows decline in rig accidents  

SciTech Connect

Institut Francais du Petrole (IFP) has compiled statistical figures on offshore accidents for risk, safety, and reliability studies. IFP calls this data base Platform. It provides a body of essential data for accidents concerning both mobile and stationary offshore drilling rigs. Historical accident data bases are a basic implement for risk assessment of safety and reliability. IFP has built this data base with all available information from 950 actual listings.

Bertrand, A.; Escoffier, L. (Institut Francais du Petrole, Rueil-Maimaison (FR))

1991-09-16

360

Offshore Software Development: Transferring Research Findings into the Classroom  

Microsoft Academic Search

Distributed software projects are becoming increasingly commonplace in industry. Yet, software engineering education rarely\\u000a graduates students with the necessary skills and hands-on experience that are particular to off-shore software development\\u000a projects. Three key areas in successful off-shore software development projects are well documented in the literature as communication,\\u000a knowledge management, as well as project and process management. This paper maps

Kay Berkling; Michael Geisser; Tobias Hildenbrand; Franz Rothlauf

2007-01-01

361

Nonlinear stochastic approach to relative motion for offshore structures  

E-print Network

NONLINEAR STOCHASTIC APPROACH TO RELATIVE NOTION FOR OFFSHORE STRUCTURES A Thesis by ERIC WILLIAM SANDT Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirements for the degree of MASTER QF SCIENCE... December 1985 Major Subject: Ocean Engineering NONLINEAR STOCHASTIC APPROACH TO RELATIVE NOTION FOR OFFSHORE STRUCTURES A Thesis by ERIC WILLIAM SANDT Approved as to style and content. by: John M. Niedzw cki (Chairman of Com ittee) John E. Flipse...

Sandt, Eric William

2012-06-07

362

Outsourcing and Offshoring with Agility: A Case Study  

Microsoft Academic Search

\\u000a We describe techniques and lessons learned from using agile methodologies with distributed teams, specifically outsourced\\u000a and offshore development teams. Such teams often need to contend with multiple organizational boundaries, differences in time\\u000a zone, language, and culture, and other communication challenges. First, we present concepts and issues in outsourcing and\\u000a offshoring. Second, we describe a case study involving continually changing requirements,

Clifton Kussmaul; Roger Jack; Barry Sponsler

363

Offshore sand prospecting in : History and recent efforts  

Microsoft Academic Search

Sea Engineering, Inc. (SEI) has continued long-standing efforts to find exploitable offshore sand resources for the purpose of nourishing Hawaii's beaches. Investigations by University of Hawaii researchers in the 1970's established the potential presence of large bodies of sand in ancient offshore alluvial channels and wave-cut terraces. Sampling efforts showed that much of the sand was too fine-grained to be

James H. Barry

2011-01-01

364

Sequence stratigraphy of Niger Delta, Delta field, offshore Nigeria  

E-print Network

to middle Miocene age formed canyons which filled with shale; these fills provide top seals on the flanks of the delta for some important offshore fields (Doust and Omatsola, 1990). 18 LOCATION AND METHODOLOGY Location Delta field is located... to middle Miocene age formed canyons which filled with shale; these fills provide top seals on the flanks of the delta for some important offshore fields (Doust and Omatsola, 1990). 18 LOCATION AND METHODOLOGY Location Delta field is located...

Owoyemi, Ajibola Olaoluwa

2005-11-01

365

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

366

How to select prime movers for offshore drilling, production  

Microsoft Academic Search

Offshore drilling is now done almost entirely with electric power and up to now has been dominated by the use of diesel-electric generating sets. Offshore drilling rigs use an average of about 7,000 hp for the drilling operation, and if the vessel is self-propelled, additional horsepower will be required for propulsion. There are 3 primary power requirements on drilling rigs:

1971-01-01

367

How to reduce sigma in offshore pipe fabrications  

SciTech Connect

The use of stainless steel for offshore oil and gas applications has increased dramatically over the last 20 years. Stainless steels fall into a number of categories depending on the composition and microstructure formed after heat treatment. Selection of pipe materials for offshore applications is dependent on the product to be carried. Austenitic and ferritic/austenitic (duplex) stainless steels are commonly used for process and utility piping systems offshore, whereas martensitic and ferritic are restricted to specific applications. Reference to sigma in offshore welding specifications has been mixed. Previously, the identification of sigma was wither not quoted or stated as being not permitted. However, achieving zero sigma content in duplex stainless steel welds and HAZs is questionable, particularly in steels and weld metals having a high chromium and molybdenum content. In the real world, how does one ensure that production welds performed offshore are free of sigma--or have a limited volume fraction of it--without having to constantly monitor welder performance? This review examines the difficulties and controls required to limit the presence of sigma in austenitic and duplex weld metals and HAZs associated with offshore piping and pipeline systems. Materials described here are those manufactured using contemporary steel making processes.

Still, J.

1999-11-01

368

[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

369

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

370

AORIS. Arctic & Offshore Technical Data System  

SciTech Connect

AORIS is a computerized information system to assist the technology and planning community in the development of Arctic oil and gas resources. In general, AORIS is geographically dependent and, where possible, site specific. The main topics are sea ice, geotechnology, oceanography, meteorology, and Arctic engineering, as they relate to such offshore oil and gas activities as exploration, production, storage, and transportation. AORIS consists of a directory component that identifies 85 Arctic energy-related databases and tells how to access them; a bibliographic/management information system or bibliographic component containing over 8,000 references and abstracts on Arctic energy-related research; and a scientific and engineering information system, or data component, containing over 800 data sets, in both tabular and graphical formats, on sea ice characteristics taken from the bibliographic citations. AORIS also contains much of the so-called grey literature, i.e., data and/or locations of Arctic data collected, but never published. The three components are linked so the user may easily move from one component to another. A generic information system is provided to allow users to create their own information systems. The generic programs have the same query and updating features as AORIS, except that there is no directory component.

Pastoria, G.A. [USDOE, Morgantown Energy Tech. Ctr., WV (United States)

1990-05-01

371

Massive sediment bypassing on the lower shoreface offshore of a wide tidal inlet - Cat Island Pass, Louisiana  

USGS Publications Warehouse

Analysis of a series of historical bathymetric and shoreline surveys along the Louisiana coast west of the Mississippi River mouth detected a large area of deposition in water depths of 2.0-8.5 m offshore of a 9-km- wide tidal inlet, the Cat Island Pass/Wine Island Pass system. A 59.9 ?? 106 m3 sandy deposit formed from the 1930s-1980s, spanning 27 km in the alongshore direction, delineating the transport pathway for sediment bypassing offshore of the inlet on the shoreface. Bypassing connected the shorefaces of two barrier island systems, the Isles Dernieres and the Bayou Lafourche. The processes responsible for formation of this deposit are not well understood, but sediment-transport modeling suggests that sediment is transported primarily by wind-driven coastal currents during large storms and hurricanes. Deposition appears to be related to changes in shoreline orientation, closing of transport pathways into a large bay to the east and the presence of tidal inlets. This newly documented type of bypassing, an offshore bypassing of the inlet system, naturally nourished the immediate downdrift area, the eastern Isles Dernieres, where shoreface and shoreline erosion rates are about half of pre-bypassing rates. Erosion rates remained the same farther downdrift, where bypassing has not yet reached. As this offshore bypassing continues, the destruction of the Isles Dernieres will be slowed.

Jaffe, B. E.; List, J. H.; Sallenger, Jr. , A. H.

1997-01-01

372

U.S. Offshore Wind Manufacturing and Supply Chain Development  

SciTech Connect

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

Hamilton, Bruce Duncan [Navigant Consulting, Inc.

2013-02-22

373

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

USGS Publications Warehouse

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

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

1993-01-01

374

A fuzzy definition of fatigue failure and reliability assessment for tubular joints of offshore structures  

SciTech Connect

In safety assessment of engineering structures, vagueness type uncertainties exist in defining certain structural performances, conditions, parameters and their inter-relationships. In this paper, based on the theory of fuzzy gets, a fuzzy definition of fatigue failure is introduced into fatigue reliability assessment for tubular joints of offshore structures. Based on the fuzzy failure definition together with the lognormal format for fatigue reliability assessment of tubular joints, the probability of fatigue failure is estimated. The principles described in this paper also apply to fatigue reliability assessment of other structures or structural reliability assessment related to failure states other than fatigue failure.

Hu, Y.; Chen, B. [Shanghai Jiao Tong Univ., Shanghai (China). Dept. of Naval Architecture and Ocean Engineering

1994-12-31

375

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

376

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

377

The application of PLC distributed input/output technology offshore  

SciTech Connect

The Programmable Logic Controller is becoming a familiar part of the Process Controls on Offshore Facilities. The current evolution of this expanding technology is Distributed I/O Blocks, and this paper is concerned with the benefits and applications this new technology brings to the Offshore Industry. The advent of the Programmable Logic Controller to the Gulf of Mexico brought greater process control flexibility to Offshore facilities. The offshore control philosophy went from independent pneumatic control of each skid unit to PLC distributed control with field panels that contained the local controls for several skid units and interfaced with control room based PLC visual display stations. The Distributed I/O Block concept allows offshore control systems to eliminate the large field interface panel, along with the associated wiring and hardware cost. This is accomplished by installing Distributed 1/0 Blocks inside the individual skid control panels and then communicating back to the control room based PLC via redundant communication cables. The control wiring between each skid control panel and the control room is now reduced to one power cable and redundant communication cables.

Glendening, J.A.

1995-12-01

378

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

379

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

380

33 CFR 165.155 - Northville Industries Offshore Platform, Riverhead, Long Island, New York-safety zone.  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Northville Industries Offshore Platform, Riverhead, Long...District § 165.155 Northville Industries Offshore Platform, Riverhead, Long...within a 500 yard radius of the Northville Industries Offshore Platform, Long Island,...

2010-07-01

381

[The influence of the home position operator's posture on the prepared abutment contour of jacket crown--the maxillary right central incisor].  

PubMed

The abutment teeth preparation with jacket crown for the maxillary right central incisor was prepared in Home Position. The following are the result of a study made on the influence to the prepared tooth form. The operators were five dentists who had 2-4 years clinical experiences and were made to prepare with 1.0 mm width shoulder. 1. The reduction of incisal edge was like the indication. 2. As for the subgingival reductions, the proximal surfaces were deep and the facial and lingual surfaces were shallow. 3. As for the degree of axial taper, angles of convergence were comparatively like the indication, and prepared teeth were inclined to distal direction for imaginary axis of tooth crown before operation. 4. The width of shoulder were insufficient except at the facial surface. 5. The surface roughness on axial wall was almost acceptable, but the roughness on shoulder was sufficient at facial surface, while insufficient at others. 6. As for Rough Value, smoothness of curve on finishing line was questionable. 7. Tooth preparation of maxillary anterior teeth in Home Position, compared with posterior, is fairly easy to operate under mirror view, and the method is stable and available. PMID:2135321

Sasagawa, T

1990-06-01

382

Evaluation of the vapor-protection capabilities of the jacket/trouser interface on the regulation ground-crew chemical defense ensemble. Interim report, 15 Nov-15 Dec 88  

SciTech Connect

The ground-crew chemical defense ensemble (CDE) has deficiencies in its ability to prevent chemical warfare (CW) simulant vapors from leaking past the outer charcoal layer in the abdominal region when personnel wearing this CDE perform exercise in a simulant CW agent vapor. The purpose of this study was to determine the site and amount of vapor penetration. A charcoal-fabric cummerbund was used as an experimental tool to prevent vapor from leaking through the jacket/trouser interface. Test subjects, wearing the ground-crew CDE with and without cummerbund, performed exercises in a CW simulant vapor (methyl salicylate). While subjects were exposed to the simulant vapor, vapor concentrations were measured under the CDE jacket in the abdominal region. After removing the CDE in a vapor-free area, subjects entered sealed offgassing booths where simulant vapor levels were continuously measured. Subjects wearing a cummerbund had 80% lower abdominal vapor concentrations and 33% lower maximum offgassing booth concentrations than subjects that did not wear a cummerbund. The source of the vapor penetration is along the jacket/ trouser interface of the ground crew CDE.

Scott, W.R.; Pointer, B.W.

1990-12-01

383

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

384

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

385

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

386

Lower cost offshore field development utilizing autonomous vehicles  

SciTech Connect

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

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

1996-12-31

387

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

SciTech Connect

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

Lovaas, S.

1985-01-01

388

Industry decries sharp decline in U. S. offshore activity  

SciTech Connect

Roadblocks to offshore activity in the U.S. drew much of the spotlight at the 24th Offshore Technology Conference last week in Houston. Among OTC highlights included in this paper are: Two panels reviewed how federal leasing moratoriums and regulatory restrictions are reining U.S. offshore development. Conoco Inc.'s manager of exploration and development in Russia detailed the allure of giant and supergiant fields in the Commonwealth of Independent States and reviewed the status of the company's efforts to negotiate E and D deals with Russian partners. Minerals Management Service officials reviewed environmental challenges facing operators on the U.S. Outer Continental Shelf and new MMS inspection strategies in the Gulf of Mexico. The 1992 OTC Distinguished Achievement Award for companies went to Brazil's Petroleo Brasileiro SA for deepwater development records set with the 3 Marlim well in the Campos basin off Brazil.

Not Available

1992-05-11

389

In Brief: Environmental standards needed for offshore marine aquaculture  

NASA Astrophysics Data System (ADS)

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

Zielinski, Sarah

2007-01-01

390

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

391

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

392

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

Federal Register 2010, 2011, 2012, 2013

...Commission on the BP Deepwater Horizon Oil Spill and Offshore...Commission on the BP Deepwater Horizon Oil Spill and Offshore...root cause of the BP Deepwater Horizon explosion, fire...investigation into the Macondo well blowout....

2010-10-22

393

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

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF ENERGY National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling; Correction AGENCY: Office...12 and 13, 2010, of the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling, (75 FR 37783)....

2010-07-09

394

33 CFR 100.719 - Annual Suncoast Offshore Challenge; Gulf of Mexico, Sarasota, FL.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Annual Suncoast Offshore Challenge; Gulf of Mexico, Sarasota, FL. 100.719 Section 100.719 ...§ 100.719 Annual Suncoast Offshore Challenge; Gulf of Mexico, Sarasota, FL. (a) Regulated area. The regulated area...

2011-07-01

395

33 CFR 100.719 - Annual Suncoast Offshore Challenge; Gulf of Mexico, Sarasota, FL.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Annual Suncoast Offshore Challenge; Gulf of Mexico, Sarasota, FL. 100.719 Section 100.719 ...§ 100.719 Annual Suncoast Offshore Challenge; Gulf of Mexico, Sarasota, FL. (a) Regulated area. The regulated area...

2010-07-01

396

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

Code of Federal Regulations, 2011 CFR

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

2011-07-01

397

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

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Spill Prevention, Control...requirements for offshore oil drilling, production...Vegetable Oils (Including Oils from Seeds, Nuts, Fruits...Kernels) § 112.11 Spill Prevention, Control...requirements for offshore oil drilling,...

2013-07-01

398

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

399

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

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Spill Prevention, Control...requirements for offshore oil drilling, production...Vegetable Oils (Including Oils from Seeds, Nuts, Fruits...Kernels) § 112.11 Spill Prevention, Control...requirements for offshore oil drilling,...

2012-07-01

400

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

401

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

...2013-07-01 true Spill Prevention, Control...requirements for offshore oil drilling, production...Vegetable Oils (Including Oils from Seeds, Nuts, Fruits...Kernels) § 112.11 Spill Prevention, Control...requirements for offshore oil drilling,...

2014-07-01

402

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

403

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

404

IRS's Offshore Voluntary Disclosure Program: 2009 Participation by State and Location of Foreign Bank Accounts.  

National Technical Information Service (NTIS)

This letter transmits information you requested on participants in the Internal Revenue Services (IRS) 2009 Offshore Voluntary Disclosure Program (OVDP), which offered incentives for taxpayers to disclose their offshore accounts and pay delinquent taxes, ...

2014-01-01

405

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 of Technology 2008. All rights reserved. Author Flexible Strategies in Engineering Systems Using Screening Models Applications to Offshore Petroleum

de Weck, Olivier L.

406

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

407

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

408

Acceptance criteria for risk in offshore construction projects  

SciTech Connect

The Norwegian Petroleum Directorate (NPD) state in their Regulation for Risk Analysis that the Operator shall form the acceptance criteria for the risk analysis. This applies to both the construction and operating phases. The philosophy is that the risk should be kept as low as reasonable practicable (ALARP). This paper will discuss what form the criteria for an offshore construction project should have, what hazards the criteria should be measured against and how one should proceed to obtain acceptable risk levels. An application of the criteria for an offshore construction project will be discussed.

Rettedal, W.; Gudmestad, O.T. [Rogaland Univ. Centre, Stavanger (Norway)

1995-12-31

409

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

410

Outsourcing (the) economy to India: utopian and dystopian discourses of offshoring  

Microsoft Academic Search

Purpose – The purpose of this paper is to examine critically both utopian and dystopian discourses of offshoring so that a more considered, nonetheless theoretically informed, view of the global offshore phenomenon can be formed. Design\\/methodology\\/approach – Drawing upon some preliminary research on offshoring ventures from the UK to India, and the extant literature, the practice of business process outsourcing

David Knights; Beverley Jones

2007-01-01

411

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

Microsoft Academic Search

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

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

2008-01-01

412

Importance of thermal effects and sea surface roughness for offshore wind resource assessment  

E-print Network

National Laboratory, Roskilde, Denmark Abstract The economic feasibility of offshore wind power utilisation sites. The first large offshore wind farms are currently being built in several countries in EuropeImportance of thermal effects and sea surface roughness for offshore wind resource assessment

Heinemann, Detlev

413

Demonstrating EO enabled assessment of sediment concentrations near offshore wind farms  

Microsoft Academic Search

The present study is a feasibility study on using earth observation data (EO) to assess changes in sediment concentrations around an offshore wind farm developed by the company Scira Offshore Energy Ltd (hereafter Scira). Offshore measurements were made from a buoy and an Acoustic Wave and Current meter (AWAC) sounding device around the study area during the period December 2004

L. B. Hansen; M. S. Rasmussen

414

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

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false DEEPWATER HORIZON Mobile Offshore Drilling Unit Safety...SAFETY ZONES § 147.T08-849 DEEPWATER HORIZON Mobile Offshore Drilling Unit Safety...safety zone. This area surrounds the DEEPWATER HORIZON, a Mobile Offshore Drilling...

2010-07-01

415

75 FR 32119 - Proposed Amendment of the Pacific High and Low Offshore Airspace Areas; California  

Federal Register 2010, 2011, 2012, 2013

...Amendment of the Pacific High and Low Offshore Airspace Areas; California...to amend the Pacific High and Low Offshore Airspace Areas by providing...describes the application procedure. History In October, 2009, the Los Angeles...modification of the Pacific High and Low Offshore Airspace Areas is...

2010-06-07

416

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

Microsoft Academic Search

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

Silvia Massini; Marcela Miozzo

2010-01-01

417

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

418

“Slicing the Value Chain” Internationally: Empirical Evidence on the Offshoring Strategy by French Firms  

Microsoft Academic Search

This paper analyzes the offshoring strategy from an empirical view. It focuses on a set of models, extracts a set of testable hypothesises and creates a suitable set of variable to test their validity. This analysis is based on a data set from French manufacturing firms that provides detailed information on the offshoring strategy. The choice of offshoring modes is

Liza Jabbour

419

Wave Synchronizing Crane Control during Water Entry in Offshore Moonpool Operations  

E-print Network

1 Wave Synchronizing Crane Control during Water Entry in Offshore Moonpool Operations strategy for active control in heavy-lift offshore crane operations is suggested, by introducing a new con industrial heave compensation systems applied to offshore cranes or module handling systems (MHS) have been

Johansen, Tor Arne

420

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

E-print Network

wind turbine foundations; 2) A review of existing, or under construction, offshore wind projects; and 3 - Content exams, one focusing on sediments, their geotechnical properties and offshore wind turbine foundations and one focusing on the coastal geologic history of a region and its relevance to offshore wind

Firestone, Jeremy

421

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

Federal Register 2010, 2011, 2012, 2013

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

2010-03-16

422

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

Microsoft Academic Search

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

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

1996-01-01

423

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

E-print Network

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

Nørvåg, Kjetil

424

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

E-print Network

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

Rollins, Andrew M.

425

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

E-print Network

) maintenance costs of offshore turbines are higher. Although offshore wind turbines can be more costly at high horizontal resolution (5 and 1.67 km) to calculate annual 80 m wind speeds (turbine hub height/2006 and the entirety of 2007 (12 months). A 5 MW offshore wind turbine was used to create a preliminary resource

426

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

Federal Register 2010, 2011, 2012, 2013

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

2010-06-09

427

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

Federal Register 2010, 2011, 2012, 2013

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

2010-05-12

428

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

Federal Register 2010, 2011, 2012, 2013

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

2010-05-12

429

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

430

An Examination of the Effects of Offshore and Outsourced Development on the Delegation of  

E-print Network

towards an expedient distribution of responsibilities. The case studies embody varying degrees of offshoreAn Examination of the Effects of Offshore and Outsourced Development on the Delegation.edu Abstract. Offshore and outsourced development are the latest facts of life of professional software

van Engelen, Robert A.

431

Quantifying Errors Associated with Satellite Sampling of Offshore Wind S.C. Pryor1,2  

E-print Network

: Remote sensing. Weibull distribution. Error bounds. Uncertainty analyses. 1. Introduction a. Offshore1 Quantifying Errors Associated with Satellite Sampling of Offshore Wind Speeds S.C. Pryor1,2 , R are of sufficient magnitude to render current use of remote sensing for generating power estimations for offshore

432

U.S. Energy Demand, Offshore Oil Production and  

E-print Network

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

Patzek, Tadeusz W.

433

Critical issues in large offshore wind farm design and operation  

Microsoft Academic Search

Interest in the realization of offshore wind farms is growing even in zones where exploitation was considered unprofitable so far. For this reason, studies are needed in order to design suitable methodologies aiming to investigate economic feasibility and control strategies both in steady-state and dynamic conditions. In this work, the analysis of steady-state behaviour and investment concerns of electric system

M. Dicorato; G. Forte; P. Pugliese; M. Trovato; F. Pallotti

2009-01-01

434

Offshore wind farm connection with low frequency AC transmission technology  

Microsoft Academic Search

This paper investigates the feasibility of using the low frequency AC transmission (LFAC) system, e.g. fraction of 50 Hz or 60 Hz, for connecting the large offshore wind farm to the grid by modelling and simulation. The LFAC system improves the transmission capacity and distance compared to the conventional AC solution at the nominal frequency, e.g. 50 Hz or 60

Nan Qin; Shi You; Zhao Xu; V. Akhmatov

2009-01-01

435

Power flow calculation for power system including offshore wind farm  

Microsoft Academic Search

This paper proposes a simplified steady-state equivalent model of asynchronous generators. With regard to the relationship between the wind velocity and generator's active power, terminal voltage, reactive power, as well as the slip ratio, a method to calculate the power flow for power system including large-scale offshore wind farm is then proposed, using the DLL files called by UPI of

Zhang Wei; Wei Zhinong; Sun Guoqiang

2009-01-01

436

ORIGINAL PAPER Review of Methodologies for Offshore Wind Resource  

E-print Network

. Moving offshore presents particular challenges to the wind energy industry but also many advantages (IEA energy development relies to some extent on accurate prediction of wind resources, but since installing. Sempreviva Wind Energy Division, Risø National Laboratory for Sustainable Energy, Technical University

Pryor, Sara C.

437

OFFSHORE OIL AND GAS EXTRACTION - AN ENVIRONMENTAL REVIEW  

EPA Science Inventory

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

438

Mathematical Modeling for Shakedown Analysis of Offshore Structures  

Microsoft Academic Search

The shakedown analysis process of an offshore structure having elastic-plastic material presented. The finite element model of the structure has been developed first, and then a simple method has been applied for shakedown analysis using matrix tool. Simplifying the relationships together with applying the theory concepts of shakedown analysis is one of the characteristics of the presented method for practical

Mohammad Javad Fadaee; Hamed Saffari; Ramin Tabatabaei

2007-01-01

439

Offshore energy boom providing opportunities outside Medicare's umbrella.  

PubMed

Physicians upset by limits imposed by the medicare system are getting a chance to spread their entrepreneurial wings on the East Coast. A boom in offshore exploration, led by Newfoundland's massive Hibernia project, has led to numerous business opportunities for physicians. PMID:9757185

Robb, N

1998-09-01

440

Bank Secrecy, Illicit Money and Offshore Financial Centers  

Microsoft Academic Search

International and national institutions regularly put pressure on offshore Financial centers and their clients to enforce compliance with anti-money laundering regulations and that in spite of the existence of bank secrecy. This paper discusses the winners and losers of such policies. Surprisingly, aggregate profits and tax revenues can increase under those policies. In addition, we show that o¤shore banks can

Pierre M. Picard; Patrice Pieretti

2008-01-01

441

Making an Open Source Case for Offshoring Commentary  

Microsoft Academic Search

The paper is an account of the possibilities that expanded international offshoring could have for the Free\\/Libre and Open Source Software (FLOSS) movement. Based on existing survey data, this paper argues that at a numeric level, the continued spread of software development jobs into new areas of the world could create the foundation from which expanded international involvement in FLOSS

C. O'Donnell

2007-01-01

442

Offshore Oil Drilling: Buying Energy Independence or Buying Time?  

ERIC Educational Resources Information Center

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

Baird, Stephen L.

2008-01-01

443

Managing Offshore Branch Campuses: An Analytical Framework for Institutional Strategies  

ERIC Educational Resources Information Center

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

Shams, Farshid; Huisman, Jeroen

2012-01-01

444

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

E-print Network

of high oro- graphy at Corsica. At least 60-70 randomly selected satellite images are re- quiredRisø-R-1298(EN) Validation of Satellite SAR Offshore Wind Speed Maps to In-Situ Data, Microscale- cision and accuracy of the satellite-derived ERS-2 SAR wind products in off- shore regions. The overall

445

Linearized Dynamic Stability of Barges for Transportation of Offshore Structure  

Microsoft Academic Search

A method to evaluate dynamic stability of towed barges for transportation of offshore structure has been described. The general condition occurs when the barge is being towed in a restricted (narrow) and shallow canal. A state-of-the-art approach of the linearized formulation of this physical problem is adopted. The solution to the problem and a scheme to test dynamic stability are

P. Mukhopadhyay

1984-01-01

446

Clinical Trials Offshored: On Private Sector Science and Public Health  

Microsoft Academic Search

This article addresses the offshoring of clinical trials to middle- and low-income countries, and the complicated ways in which they have become integral to public health and quality of care in these contexts. I focus on the operations of United States-based contract research organizations (CROs), which make up a specialized global industry focusing on the recruitment of human subjects and

Adriana Petryna

2007-01-01

447

Onshore planning for offshore oil: lessons from Scotland  

Microsoft Academic Search

This book examines the physical, social, and economic effects onshore that accompany oil development offshore, namely: (1) the phases of oil development--exploration, platform construction, supply base development, pipeline construction, drilling, processing, and transportation--each of which generates its own impacts in its own time frame; many of the impacts are felt surprisingly early; (2) the strains placed on planning systems as

P. L. Baldwin; M. F. Baldwin

1975-01-01

448

Offshore Hedge Funds: Survival and Performance 1989-1995  

Microsoft Academic Search

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

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

1997-01-01

449

Predictive diagnosis for offshore wind turbines using holistic condition monitoring  

Microsoft Academic Search

This paper presents the role of SeeByte's RECOVERY system within the wind energy industry, with specific focus on an offshore scenario. The current generation of condition monitoring systems (CMS) in relation to wind energy are generally provided by turbine manufacturers, or have been adapted from other industries. These systems have a propensity to focus explicitly on individual parts of the

E. Miguela?ñez

2010-01-01

450

Assessment of turbulence by high-order statistics. Offshore example.  

E-print Network

Assessment of turbulence by high-order statistics. Offshore example. Allan Morales Joachim Peinke-Normal probability den- sity functions. We also show that statistical struc- ture corresponding to homogeneous minute wind speed average was done. In the allan.morales@uni-oldenburg.de joachim.peinke@forwind.de Table

Peinke, Joachim

451

Quantifying the Benefits of Combining Offshore Wind and Wave Energy  

NASA Astrophysics Data System (ADS)

For many locations the offshore wind resource and the wave energy resource are collocated, which suggests a natural synergy if both technologies are combined into one offshore marine renewable energy plant. Initial meteorological assessments of the western coast of the United States suggest only a weak correlation in power levels of wind and wave energy at any given hour associated with the large ocean basin wave dynamics and storm systems of the North Pacific. This finding indicates that combining the two power sources could reduce the variability in electric power output from a combined wind and wave offshore plant. A combined plant is modeled with offshore wind turbines and Pelamis wave energy converters with wind and wave data from meteorological buoys operated by the US National Buoy Data Center off the coast of California, Oregon, and Washington. This study will present results of quantifying the benefits of combining wind and wave energy for the electrical power system to facilitate increased renewable energy penetration to support reductions in greenhouse gas emissions, and air and water pollution associated with conventional fossil fuel power plants.

Stoutenburg, E.; Jacobson, M. Z.

2009-12-01

452

Offshore Petroleum Resource Development and Marine Mammals: A Review and  

E-print Network

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

453

Articulation work in small-scale offshore software development projects  

Microsoft Academic Search

The paper describes coordination practices of small and medium enterprises (SME) that outsourced parts of their software development to offshore vendors. Our case study in a German company shows that the geographic distribution of knowledge and expertise requires continuous informal coordination across the teams. Such practices can be described as a combination of formal coordination and informal articulation work in

Alexander Boden; Bernhard Nett; Volker Wulf

2008-01-01

454

Jurassic faults of southwest Alabama and offshore areas  

Microsoft Academic Search

Four fault groups affecting Jurassic strata occur in the southwest and offshore Alabama areas. They include the regional basement rift trend, the regional peripheral fault trend, the Mobile graben fault system, and the Lower Mobile Bay fault system. The regional basement system rift and regional peripheral fault trends are distinct and rim the inner margin of the eastern Gulf Coastal

R. M. Mink; B. H. Tew; B. L. Bearden; E. A. Mancini

1991-01-01

455

Using satellite data for mapping offshore wind resources and wakes  

E-print Network

Energy Department, Denmark Copenhagen Offshore Wind, Conference and Exhibition 26-28 October 2005SectionRadarCrossNormalized = Physics Ocean surface roughens by wind interaction: Capillary and short gravity waves are generated. More;Conclusions · Satellite ocean wind from many satellites are used to calculate: mean wind speed, Weibull

456

Supporting Off-Shore Students: A Preliminary Study  

ERIC Educational Resources Information Center

This paper reports on the first part of a recent research study into current initiatives to support the learning of non-English speaking background (NESB) transnational students in Asia who are studying off-shore at Australian universities. Learning support and development staff in 12 universities were surveyed using a questionnaire. The survey…

Hussin, Virginia

2007-01-01

457

Higher Skills and the Knowledge Economy: The Challenge of Offshoring  

ERIC Educational Resources Information Center

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

Craig, John; Gunn, Andrew

2010-01-01

458

Transnational Higher Education: Offshore Campuses in the Middle East  

ERIC Educational Resources Information Center

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

Miller-Idriss, Cynthia; Hanauer, Elizabeth

2011-01-01

459

Nepheloid layer distribution in the Benguela upwelling area offshore Namibia.  

E-print Network

Nepheloid layer distribution in the Benguela upwelling area offshore Namibia. Maik Inthorna of nepheloid layers across the outer shelf and upper continental slope off Namibia was studied during a cruise to relate the nepheloid layers to hydrographic structures. The particle content of surface water

Mohrholz, Volker

460

Ris National Laboratory Satellite SAR applied in offshore wind  

E-print Network

in the North Sea, International Journal of Remote Sensing (accepted) CMOD4 Linear regression R2 SE N y=0.932x-0 sampling of offshore wind speeds realistically represent wind speed distributions, Journal of Applied associated with sampling strategy and distribution fitting methods, Journal of Applied Meteorology 43

461

Hard Bottom Substrate Monitoring Horns Rev Offshore Wind Farm  

E-print Network

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

462

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

463

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

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

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

464

Offshore energy boom providing opportunities outside medicare's umbrella  

PubMed Central

Physicians upset by limits imposed by the medicare system are getting a chance to spread their entrepreneurial wings on the East Coast. A boom in offshore exploration, led by Newfoundland's massive Hibernia project, has led to numerous business opportunities for physicians. PMID:9757185

Robb, N

1998-01-01

465

Electric power from offshore wind via synoptic-scale interconnection  

E-print Network

Electric power from offshore wind via synoptic-scale interconnection Willett Kemptona,1 , Felipe M) World wind power resources are abundant, but their utilization could be limited because wind fluctuates rather than providing steady power. We hypothesize that wind power output could be stabilized if wind

Firestone, Jeremy

466

Floating OffShore Wind Turbines for Shallow waters  

Microsoft Academic Search

Bottom mounted Offshore wind turbines seem to have a promising future but they are restricted to shallow waters such as in Northern Europe. Many projects are planned or are in the phase of construction in the North Sea and the Baltic Sea. All projects planned to date are in water depths of up to approximately 25 m. The research project

B. H. Bulder; A. Henderson; R. H. M. Huijsmans; J. T. G. Pierik; E. J. B. Snijders; G. H. Wijnants; M. J. Wolf

2002-01-01

467

Integrated monitoring of offshore wind turbines – requirements, concepts and experiences  

Microsoft Academic Search

Wind turbines on offshore sites (OWECs) are subjected to combined loads from wind and waves. These dynamic loads, with a frequency content within the range of the natural frequencies of the structures, cause fatigue-effective stresses in the substructures of wind turbines. Therefore, the examination of natural frequencies is an important part within the design process of wind turbines. The quality

Rolf Günter Rohrmann; Sebastian Thöns; Werner Rücker

2010-01-01

468

Namibia, practically unexplored, may have land, offshore potential  

SciTech Connect

Namibia became an independent nation in March 1990. Lying in southwestern Africa, it has an onshore area of 823,144 sq km with a coastline some 1,400 km long (Figs. 1,2). The offshore area, out to the 1,000 m isobath, is 340,000 sq km. This is equal to the combined offshore areas of Gabon, Congo, Zaire, and Angola. The hydrocarbon potential of this vast region is virtually unexplored because of political uncertainties that affected the country in the years until independence. Now, however, the country has a democratically elected government, political stability, and a positive and realistic attitude towards foreign investment. The authors describe the recently enacted petroleum legislation, taxation system, and hydrocarbon potential of Namibia. A licensing round (both offshore and onshore) has just been announced and will close Nov. 1, 1991. The new onshore and offshore blocks are shown. Through the activities of Namcor, the national petroleum corporation, and Intera ECL, Namibia is emerging as one of the few remaining countries of the world where truly giant fields could be found.

Light, M.P.R. (Intera ECL Petroleum Technologies, Henley-on-Thames (GB)); Shimutwikeni, N. (National Petroleum Corp. of Namibia, Windhoek, Namibia (ZA))

1991-04-08

469

Reverse Offshore Outsourcing Experiences in Global Software Engineering Projects  

Microsoft Academic Search

In this paper, we examine a case in reverse offshore outsourcing, in which a software company in Western Europe provided services to a bank subsidiary in Asia as part of a global software reengineering project. The bank selected the software company, among other reasons, because it could provide the service more cheaply than competing software companies in other geographic regions.

Ben Wilson; Kris Ceuppens

2011-01-01

470

Access to and Usage of Offshore Liberty Ship  

E-print Network

Access to and Usage of Offshore Liberty Ship Reefs in Texas ROBERT B. DITTON, ALAN R. GRAEFE, ANTHONY J. FEDLER, and JOHN D. SCHWARTZ Sinking aLiberty Ship offthe Texas coast. Texas Coastal and Marine for surplus Liberty Ships and to use these ships for establish- ABSTRACT-Allhou[?h arlificial reefs have been

471

Distribution of oil and gas fields in China offshore basins  

Microsoft Academic Search

China offshore basins have been explored for more than ten years by ourselves, corporation, and cooperation with foreign oil companies. Large sums of seismic data have been acquired, and several hundreds of wells have been drilled. The present daily production in these basins is 250,000 barrels of oil and 350 MMCF of gas. The activity of exploration and development in

Zaisheng Gong; Yang Jiaming

1996-01-01

472

Offshore drilling and oil recovery: keys to half a century  

Microsoft Academic Search

Technological and structural developments in offshore drilling and oil recovery during the past 50 yr are reviewed. The earliest steps into the open sea were pier and pile-supported rigs built off the California and Louisiana coasts in the 1920s and 1930s, respectively. Jackup rigs were designed to lift the rig above storm wave level, and currently 53% of the world's

Kastrop

1979-01-01

473

Offshore wind profile measurements from remote sensing instruments  

E-print Network

Offshore wind profile measurements from remote sensing instruments Ioannis Antoniou (1) , Hans E) , Mats Hurtig (3) , (1): Wind Energy Department, Risø National Laboratory, Frederiksborgvej 399, Postboks): AQSystem Sweden. Summary Two SODARs (SOund Detection And Ranging) and a LIDAR (LIght Detection And Ranging

474

Finite element analysis of tensegrity structures in offshore aquaculture installations  

Microsoft Academic Search

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

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

2007-01-01

475

ENVIRONMENTAL ISSUES ASSOCIATED WITH OFFSHORE AQUACULTURE & MODELING POTENTIAL IMPACT  

Microsoft Academic Search

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

Ralf Riedel; Christopher J. Bridger

476

Portable life support for instrumentation of an offshore platform  

NASA Technical Reports Server (NTRS)

A compressor was used to supply air through a nylon hose to the offshore platform field engineer working at the bottom of the piling. Air quality in the pile was sampled periodically for carbon dioxide, carbon monoxide, hydrogen sulfide, and combustible gases by an universal tester and an explosion meter.

Mull, M. M.; Coffin, C. L.

1972-01-01

477

Jackup converts to construction unit for surf operations. [Offshore drilling units  

SciTech Connect

Jackup drilling units which can be quickly converted to install platform jackets and lay pipe can reduce the costs of development in shallow-water surf zones. Two such units, built for Keydril of Houston, are currently working in surf zones off West Africa. Construction features are described.

Not Available

1983-11-01

478

Bird distribution response to offshore wind farms. Results from Horns Rev and Nysted Offshore Wind Farms in Denmark  

Microsoft Academic Search

As part of a programme to develop renewable energy sources, a government action plan launched five offshore demonstration wind farm projects in Danish waters in 1997, with the aim to provide information about their engineering and economic feasibility as well as assessing their effects on the environment, especially the potential impacts on waterbirds. All projects were obliged to undertake full

Ib Krag Petersen

479

Oxford University Civil Engineering Novel Foundations for Offshore Wind FarmsNovel Foundations for Offshore Wind Farms  

E-print Network

Oxford University Civil Engineering Novel Foundations for Offshore Wind FarmsNovel Foundations University Civil Engineering OutlineOutline · Motivation · The technical problem · Project structure University Civil Engineering Climatic Research Unit, University of East Anglia, February 2001 #12;Oxford

Houlsby, Guy T.

480

Submitted for Review Journal of Offshore Mechanics and Arctic Engineering, ASME PRACTICAL AIRGAP PREDICTION FOR OFFSHORE STRUCTURES  

E-print Network

. The first new method enables inclusion of some second-order effects, though it is based on only first-volume offshore structures provide design challenges that are well outside the present design experience base challenge. Two distinct hydrodynamic effects are observed: (1) global forces and resulting motions

Sweetman, Bert

481

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

482

Copyright 2002, Offshore Technology Conference This paper was prepared for presentation at the 2002 Offshore Technology Conference held in  

E-print Network

Caspian Sea, offshore Azerbaijan, prove evidence for buried gas hydrates well- beneath the seafloor (~300 Caspian Sea may be stable in water depths as shallow as ~150 m, much shallower than other areas reported of the deepwater of the South Caspian Sea, buried deposits well beneath the seafloor, and accordingly, they may

Knapp, Camelia Cristina

483

Hydrocarbon prospectivity of the east China Sea Basin, offshore China: A small independant's view  

SciTech Connect

The East China Sea Basin located offshore China, consists of a series of rift-related northeast-southwest trending fault blocks, tilt blocks, and half-graben structures characterized by en echelon type faulting which are key features for enhancing prospectivity in the area. A series of recent discoveries by China's Ministry of Geology (MOG) in the eastern portion of the basin (the Xihu Trough), have confirmed that significant potential does exist within the basin proper. However, exploration success within the western portion of the basin (the [open quotes]Inner graben system[close quotes]), has so far eluded foreign companies who were awarded eighteen lease blocks by the China National Offshore Oil Corporation (CNOOC) in 1993. Key risks are perceived to be source rock related. Five of the eighteen leases totalling 23,500 square kilometers, are currently held and operated by Primeline Petroleum Corporation (PPC), a small independent based in London. Recent studies indicate the southern-most lease (Block 32/32) has significant potential for a future commercial discovery. Two wells, Lingfeng-1 and Shimentan-1, were drilled within the block by MOG in 1985 and 1987. The Lingfeng-1 well, encountered and recovered high quality crude (API = 48 degrees) but was never properly tested for commerciality. Both wells encountered good quality source and reservoir rocks. A total of eleven structural prospects have been defined within the block with potential recoverable reserves ranging from 114 to 276 MMBO per prospect. A test well is planned for the fall of 1996.

Buckingham, M.L.; Wang, G.M. (Primeline Petroleum Corp. Ltd., London (United Kingdom)); Soulsby, A. (and others)

1996-01-01

484

Basic features of the structure of the Bulgarian offshore and some aspects of its hydrocarbon potential  

SciTech Connect

Most recent publications dealing with the structural configuration of the Bulgarian offshore area and its hydrocarbon potential focus on the offshore continuation of key structural elements recognized on land. However, newly acquired geological and geophysical information throws some light on this problem. New tectonic elements are recognized that do not find equivalents onshore; these are characterized by their own oil and gas potential (e.g. Rezovska zone and Michurin saddle). In general terms the Bulgarian Black Sea shelf can be subdivided into three structural units, which differ in their geohistorical development. (1) The northern platform part includes the Varna and east Moesian monoclines, which are separated by the Kaliakra fault zone. The area is characterized by block-faulted structures and a clearly expressed disconformity between Triassic and Upper Jurassic-Valanginian levels. (2) The southern borderland area, which comprises the eastern continuations of the Sredogorie, Balkan, and Strandza zones, is strongly differentiated and less well studied. The Balkan is characterized by flower structures and the Rezovska zone by diapir-like structures. (3) The continental slope is less well studied. Observed slope types vary between sedimentary constructional and tectonic erosional. The hydrocarbon potential of the shelf is related to Devonian and Carboniferous as well as Upper Jurassic-Early Cretaceous carbonates. Organogenic buildups, particularly in the latter, are primary prospects. Tertiary prospects are related to Eocene sands and potential early Eocene and Oligocene source rocks.

Bokov, P.; Guendovich, K.; Radev, M.; Chakarov, P. (Geology and Geophysics Corp., Sofia (Bulgaria))

1993-09-01

485

Tephrochronology offshore Ischia Island, Tyrrhenian sea, Italy  

NASA Astrophysics Data System (ADS)

This work presents the analytical results of a tephrochronological study carried out on 12 gravity cores collected offshore southern Ischia island down to a maximum depth of 1238 m. The more distal site (core C1071) is located few kilometers to the west of the "Banco delle Sirene" seamount, not far from the Magnaghi and Dohrn canyons. The composite succession records at least the last ca. 40 kyrs of marine sedimentation as deduced by 14C AMS dating and tephrostratigraphy. This is consistent with the attribution, on the basis of the calcareous nannofossil assemblages, to the Emiliania huxleyi Acme Zone (Rio et al., 1990) in the latest Pleistocene-Holocene time interval. Eight primary tephra layers were recognised and analysed. They are generally represented by coarse to fine ash alternating with a number of volcaniclastic turbidites along the whole succession. The glass fraction was geochemically characterised through SEM-EDS analyses and shows clear affinities with products erupted during significant explosive events occurred in the Campania Plain, Ischia and Procida islands during the last 40 kyrs. Four ash layers were correlated with several eruptions occurred on Ischia island between the Middle Ages and Roman times and at ~ cal. 17 ka B.P. Deposits related to explosive activity occurred on Procida island were also found and dated at ~23 cal ka. Among the most ancient tephra layers, the best preserved horizon, 30 cm thick, is represented by the flegrean products of the Campanian Ignimbrite event (39 ka; De Vivo et al., 2001) the marine signature of which is known as C13 tephra in the Tyrrhenian (Thon-That et al., 2001). The peculiar composition and stratigraphic position of two other main marker tephras recognised in the succession, allowed us to correlate them with the still poorly known Schiava (36 ka B.P.; Paterne and Guichard, 1993; Sulpizio et al., 2003) and Codola (~33. cal ka B.P.; this work) fall-out products which occur as 7-5 cm-thick pumice layers at the coring site. The definition of the source area of these two major events is still a matter of debate. However, the Somma-Vesuvius complex reasonably sourced the Schiava deposits while a Campi Flegrei provenance for the Codola deposits cannot be ruled out (Di Vito et al., 2008). These latters, known as C10 tephra in the Tyrrhenian and Adriatic sea (Paterne et al., 1988; Giaccio et al., 2008), in particular, represent reliable regional markers for the whole central Mediterranean area. References De Vivo, B., Rolandi, G., Gans, P.B., Calvert, A., Bohrson,W.A., Spera, F.J., Belkin, H.E., 2001. New constraints on the pyroclastic eruptive history of the Campanian volcanic Plain (Italy). Mineralogy and Petrology 73, 47-65. Di Vito,M.A., Sulpizio, R., Zanchetta, G., D'Orazio, M., 2008. The late Pleistocene pyroclastic deposits of the Campanian Plain: newinsights into the explosive activity of Neapolitan volcanoes. J. Volcanol. Geotherm. Res.177, 19-48. Giaccio, B., Isaia, R., Fedele, F.G., Di Canzio, E., Hoffecker, J., Ronchitelli, A., Sinitsyn, A., Anikovich, M., Lisitsyn, S.N., 2008. The Campanian Ignimbrite and Codola tephra layers: two temporal/stratigraphic markers for the Early Upper Palaeloithic in southern Italy and eastern Europe. J. Volcanol. Geotherm. Res. 177, 210-228. Paterne M., Guichard F. & Labeyrie J., 1988. Explosive activity of the south Italian volcanoes during the past 80.000 years as determined by marine tephrochronology. J. Volcanol. Geother. Res. 34, 153-172. Paterne, M., Guichard, F., 1993. Triggering of volcanic pluses in the Campanian area, south Italy, by periodic deep magma in.ux. Journal of Geophysical Research 98 (B2), 1861-1873. Rio, D., Raffi, I., Villa, G., 1990. Pliocene-Pleistocene calcareous nannofossil distribution patterns in the western Mediterranean. In: Kastens, K.A. (Ed.), Proceedings of the Ocean Drilling Program. Scientific Results, vol. 107. Ocean Drilling Program, College Station, TX, pp. 513-533. Sulpizio, R., Zanchetta, G., Paterne, M., Siani, G., 2003. A review of tephrostratigraphy in central and south

Insinga, Donatella; Sulpizio, Roberto; de Alteriis, Giovanni; Morabito, Simona; Morra, Vincenzo; Sprovieri, Mario; di Benedetto, Claudia; Lubritto, Carmine; Zanchetta, Giovanni

2010-05-01

486

The offshore petroleum industry: The formative years, 1945-1962  

NASA Astrophysics Data System (ADS)

This dissertation is the first to examine the offshore oil industry that was born in the calm waters of the Gulf of Mexico. It describes the industry's origins and tracks its development as a consequence of a search for new oil frontiers. In addition, it elaborates how the oil industry moved into the marine province using available technology, and was driven by the economic urgency to compete and develop new territories. Enterprising drilling contractors and operators seized the offshore gamble, finding it possible to lower the economic and technological threshold by drawing directly from wartime research and surplus equipment. Though large oil companies had placed its indelible stamp upon the industry, the smaller, independent oil operators set the pace of early offshore development. As a technological frontier, offshore development depended upon creative and unconventional engineering. Unfamiliar marine conditions tested the imagination of oil industry engineering. The unorthodox methods of John Hayward of Barnsdall Oil and R. G. LeTourneau of LeTourneau, Inc. among others transformed the industry by blending petroleum and marine engineering. Grappling with alien marine conditions and lacking formal training, Hayward and LeTourneau merged a century of practical oil field knowledge and petroleum engineering with 2,000 years of shipbuilding experience. The Gulf of Mexico served as a fertile and protective environment for the development of a fledgling industry. With calm waters, lacking the tempestuous and stormy character of the Atlantic Ocean, with a gradual sea-floor slope and saturated with the highly productive salt dome reservoirs, the Gulf became the birth place of the modern offshore oil industry. Within its protective sphere, companies experimented and developed various technical and business adaptations. Operators used technology and business strategies that increased the opportunity for success. In addition, regional academic research institutes arose as a response to increasing work done for the offshore industry. Academic areas that developed included oceanography, physical oceanography, marine biology, marine geology, meteorology, and weather forecasting, During the formative era that ended in the late 1950s the industry had formed its technological and economic foundation in the Gulf, and stood poised to seize the initiative in the North Sea, the Middle East, the Far East, and Indonesia.

Kreidler, Tai Deckner

1997-12-01

487

Superconducting light generator for large offshore wind turbines  

NASA Astrophysics Data System (ADS)

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

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

2014-05-01

488

Integrated reservoir management in the Carpinteria Offshore Field  

SciTech Connect

The Carpinteria Offshore Field is located near Santa Barbara, California. The State of California owns the portion of the field nearest the coast, and the US Federal Government the portion of the field that lies beyond a statutory three-mile coastal water limit. This mature reservoir has yielded more than 100 million barrels of oil from five platforms in its 30 years of production. The US Department of Energy`s Los Alamos National Laboratory (managed by the University of California) has joined with the State Lands Commission of California, the US Department of Interior`s Minerals Management Service, and the independent operator of the field, Pacific Operators Offshore, Inc., in a unique collaboration to redevelop the field. The reservoir management strategy for the Carpinteria Field relies on a long-term investment in simulation tools and expertise. These technologies and expertise are available to all project participants through a virtual enterprise business model.

Whitney, E.M.; Pawar, R.J.; Kendall, R.P.

1998-12-31

489

Off-shoring clinical research: exploitation and the reciprocity constraint.  

PubMed

The last 20 years have seen a staggering growth in the practice of off-shoring clinical research to low-and middle-income countries (LICs and MICs), a growth that has been matched by the neoliberal policies adopted by host countries towards attracting trials to their shores. A recurring concern in this context is the charge of exploitation, linked to various aspects of off-shoring. In this paper, I examine Alan Wertheimer's approach and offer an alternative view of understanding exploitation in this context. I will suggest that the justification for the enterprise of research is largely dependent on its integration within a health system from which participants regularly benefit and I argue that an attention to a principle of reciprocity will enable us to better recognize and address exploitation in international research. PMID:22708740

Mitra, Agomoni Ganguli

2013-12-01

490

Operators renewing exploration in offshore basins of France  

SciTech Connect

Forty nine wells were drilled without success from the latter 1960s to the first half of the 1980s in French offshore areas. About 10 years of reduced activity followed this first phase of exploration. For a couple of years, these areas have been closely reassessed, taking into account the experience and data previously acquired. More particularly, a better understanding of tectonic processes at the origin of complex structural traps, a better taking into account of the distribution, quality, and maturation history of source rocks, together with significant improvements in seismic data acquisition-processing and basin modeling techniques, have led a few oil companies to apply for licenses in three offshore areas. The paper discusses prospects in the Bay of Biscay, the Iroise Sea and English Channel, and the Gulf of Lions.

Lamiraux, C. [Ministry of Industry, Rueil-Malmaison (France); Mascle, A. [Inst. Francais du Petrole, Rueil-Malmaison (France)

1995-07-03

491

Deepwater advanced diving systems that support the offshore oil field  

SciTech Connect

This paper reviews deepwater diving technology which provides offshore oilfield support during all phases of exploration, construction and production. Mobile Observation Bells (MOB), Atmospheric Diving Suits (ADS), Remotely-Operated Vehicles (ROV), and saturation diving techniques are discussed. The term ''deep water'' is defined in relation to the water depths off the U.S. west coast. All diving system parameters are analyzed for each alternative; cost-effectiveness and safety are the two main objectives. Specific jobs are described which have used this high technology equipment for offshore operations on the U.S. west coast. These include drilling rig support, platform inspection and maintenance, and pipeline construction. Finally, future developments in diving systems are discussed.

Carnevale, S.J.

1983-03-01

492

China Marches West: Jacket cover  

E-print Network

The China we know today is the product of vast frontier conquests of the seventeenth and eighteenth centuries by the expanding Qing empire. China Marches West tells the story of this unprecedented expansion and explores ...

Perdue, Peter C.

493

Potential for Floating Offshore Wind Energy in Japanese Waters  

Microsoft Academic Search

The prospects for large scale commercialisation of sea-bed- mounted offshore windfarms are currently excellent, with the existing small-scale prototype windfarms currently being joined by the first large-scale parks in the shallow seas off the Danish, German, Swedish, Dutch, Belgian, British and Irish coasts. However other countries, including Japan, have much more limited regions of the shallow waters suitable for such

A. R. Henderson; R. Leutz; Tomoki Fujii

2002-01-01

494

Application of VSC-HVDC system on offshore wind farm  

Microsoft Academic Search

In order to realize application of VSC-HVDC system on offshore wind farm, analyzing the principle and characteristics of VSC-HVDC system, Through its mathematical equivalent circuit, deduced active power and reactive power formulation. Based on the formulation analyzing three basic control mode of inverter. Combined with AC power and traditional HVDC system, analyzing advantaged performance of VSC-HVDC system. From the angle

Jieqiu Bao; Zhenguo Gao; Chuiyi Meng

2011-01-01

495

Basic Integrative Models for Offshore Wind Turbine Systems  

E-print Network

.com) ................................................... 20 17 David Fisher?s Swirling Skyscraper (gizmag.com) ................................................... 20 viii FIGURE Page 18 Offshore Wind Turbine, the Aerogenerator X (gizmodo.com)................................... 22 19 Siemens Hywind... the three wind turbines with greater wind stream. An example from dynamic architecture is David Fisher?s rather unique design of a wind-powered, rotating skyscraper, which features 80 independently-rotating floors and is expected to be the world?s first...

Aljeeran, Fares

2012-07-16

496

Armelle Choplin et Jrme Lombard La Mauritanie offshore.  

E-print Network

1 Armelle Choplin et Jérôme Lombard La Mauritanie offshore. Extraversion économique, �tat et sphères dirigeantes Le processus d'extraversion est au coeur du fonctionnement de l'�tat mauritanien. Dans minières et halieutiques du pays. Avec la mise en exploitation de nouvelles ressources (pétrole et or), l'extraversion

Boyer, Edmond

497

Offshore Hedge Funds: Survival and Performance, 1989-95  

Microsoft Academic Search

The authors examine the performance of the off-shore hedge fund industry over the period 1989 through 1995 using a database that includes both defunct and currently operating funds. The industry is characterized by high attrition rates of funds, low covariance with the U.S. stock market, evidence consistent with positive risk-adjusted returns over the time, and little evidence of differential manager

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

1999-01-01

498

Drugs offshore: companies stepping up fight against hidden adversary  

Microsoft Academic Search

Oil companies worldwide are effectively fighting a growing nemesis, drug and alcohol abuse on offshore installations. It is estimated that companies are losing millions of dollars in lost productivity, accidents, and thefts caused by on-the-job use of illegal drugs. Some of the measures being employed to combat the use of such drugs, e.g., tight control, better communications, diversions for employees,

Redden

1986-01-01

499

Topographic analysis of submarine cable failures offshore southwestern taiwan  

NASA Astrophysics Data System (ADS)

In 2006, there was large scale of the submarine cable failures offshore southern Taiwan right after the Pingtung Earthquake. Apparently the December 26 Pingtung Earthquake triggered submarine mass movements which generated turbidity currents in the submarine canyons and damaged cables lying across the canyons. In addition, the Typhoon Morakot on August 8-9, 2009 and the Jiashian Earthquake on March 4, 2010 also caused many submarine cable failures offshore southwestern Taiwan. The most of broken cable sites are along the axis of the Gaoping Submarine Canyon (GPSC) and Fangliao Submarine Canyon (FLSC), topography should be an important factor controlling transport processes of submarine mass movement. The cable broken sites indicate that there were submarine mass movement pass through. Therefore, the topographic factor of the cable broken sites can be the threshold to index submarine mass movement. And as, submarine cables are distributed widely offshore southwestern Taiwan, why only a total of 35 sites of submarine cable failures occurred in 2006, 2009 and 2010? We use bathymetry data, CHIRP (compressed high-intensity radar pulse) sonar profile data and the time series of the cable breakage to investigate the characteristics of submarine mass movement and to develop a model for the series of submarine cable failure. Using the Geographic Information System (GIS) software, we analyze the bathymetric data collected before the 35 sites of submarine cable failures offshore southwestern Taiwan. Applying the hydrology in GIS software, the flow movement could be derived from the factors of slope and aspect. We quantify the transport process of submarine mass movement and combine with the time series of the cable breakage to discuss the effect between submarine cable failures. Based on the CHIRP sonar data, we identified the distinct CHIRP echo character patterns after the submarine cable failures and classify the distinct CHIRP echo characters. Using the threshold of topographic factor to expect where will be potential area of submarine mass movement and evidence the result by CHIRP sonar profile data.

Hsia, Pei Cheng; Shine Liu, Char; Hsu, Ho Han

2013-04-01

500

Remote Sensing Observation Used in Offshore Wind Energy  

Microsoft Academic Search

Remote sensing observations used in offshore wind energy are described in three parts: ground-based techniques and applications, airborne techniques and applications, and satellite-based techniques and applications. Ground-based remote sensing of winds is relevant, in particular, for new large wind turbines where meteorological masts do not enable observations across the rotor-plane, i.e., at 100 to 200 m above ground level. Light

Charlotte Bay Hasager; Alfredo Pena; Merete Bruun Christiansen; Poul Astrup; Morten Nielsen; Frank Monaldo; Donald Thompson; Per Nielsen

2008-01-01