The Design, Installation, and Performance of a Berm-Supported Exploration Structure in the Beaufort Sea

1985 ◽  
Vol 107 (2) ◽  
pp. 188-194
Author(s):  
K. J. Hewitt ◽  
W. E. Berzins ◽  
J. P. Fitzpatrick ◽  
H. G. Hogeboom
Keyword(s):  
Case History ◽  
Beaufort Sea ◽  
Wave Loads ◽  
Extreme Temperatures ◽  
Related Activity ◽  
Design Considerations ◽  
Ice Conditions ◽  
Ice Loads ◽  
And Performance ◽  
Placement Technique

The design, installation, and performance of a berm-supported exploration structure in a dynamic ice environment is presented. Details are provided on design considerations which include horizontal ice loads, wave loads, seismic considerations, foundation characteristics and extreme temperatures. The development of specifications and installation techniques to account for these design concerns is presented. A case history is presented which includes a discussion of on-site modifications to the idealized placement technique, which were necessitated by extreme ice conditions. The success of this modified placement technique is confirmed through a review of the units performance during the drilling season, and the response of the structure to dynamic ice and drilling-related activity is examined.

scholarly journals Design considerations and performance of MEMS acoustoelectric ultrasound detectors

2013 ◽  
Vol 60 (9) ◽  
pp. 1906-1916 ◽  
Author(s):  
Zhaohui Wang ◽  
Pier Ingram ◽  
Charles L. Greenlee ◽  
Ragnar Olafsson ◽  
Robert A. Norwood ◽  
...  
Keyword(s):  
Design Considerations ◽  
And Performance

Corporate governance practices and firm performance: a configurational analysis across corporate life cycles

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Hala M. Amin ◽  
Ehab K.A. Mohamed ◽  
Mostaq M. Hussain
Keyword(s):  
Corporate Governance ◽  
Firm Performance ◽  
Analytical Approach ◽  
Research Study ◽  
Performance Outcomes ◽  
Life Cycles ◽  
Related Activity ◽  
Content Type ◽  
And Performance ◽  
Country Specific

Purpose This study aims to explore corporate governance (CG) practices that can lead to firms’ better performance in different organizational life cycles. The authors propose a configurational approach to explore how a set of CG practices combine in bundles to achieve high performance outcomes for firms across their corporate life cycles. Design/methodology/approach Fuzzy-set qualitative comparative analysis was used to analyze a sample of data of 21 countries and 9 industries. Data referred to the period of 9 years extending from the year 2005 to the year 2013. Findings This study reveals that there are multiple CG practices that exist through firms that can achieve high firm performance. Moreover, CG practices combine in different ways for firms in their growth, maturity and declining stages. Research limitations/implications This study demonstrates the value of using a configurational analytical approach to explore both the firm and country-specific CG practices (together) that engage firms to achieve the desired level of performance across the corporate life cycles. Practical implications The current study draws attention to the policymakers’ need to assess the current level of regulatory and competitive development of their countries and form policy accordingly. The approach used in the current research study not only offers the linkages between CG and performance to managers as incentives to comply with regulation but also to view CG-related activity as a strategic move. Social implications The approach used in the current research study not only offers the linkages between CG and performance to managers as incentives to comply with regulation but also to view CG-related activity as a strategic move. Originality/value This study broadening the focus of CG studies to include a rigorous explanation of the global CG phenomena and to provide effective solutions for the practitioners. Contribution to Impact This study demonstrates the value of using a configurational analytical approach to explore both the firm and country-specific CG practices (together) that engage firms to achieve the desired level of performance across the corporate life cycles.

scholarly journals Forensic Geo-Technical Engineering Case History

2005 ◽  
Vol 23 (2) ◽  
Author(s):  
D.S. Sax Saxena
Keyword(s):  
Case History ◽  
Geotechnical Engineering ◽  
Remedial Measures ◽  
Forensic Engineering ◽  
Performance Problems ◽  
And Performance ◽  
Judicial Scrutiny

The Specialty That Deals With Investigation Of Failures And Performance Problems In The Geotechnical Environment Is Known As Forensic Geotechnical Engineering. It Involves Scientific And Jurisprudence Related Investigations And Evaluation To Analyze The Causes Of Structural Distress That Originate From Geodomain. Forensics In The Geo-Domain Encompass An Extensive Array Of Topics With Specific Emphasis In Geotechnical Related Fields. Mostly, They Apply To Failures After They Occur. Such Analysis And The Evaluation Of Selected Remedial Measures, Along With Their Effectiveness And Economy, Are Normally Subjected To Judicial Scrutiny. A Case History Is Presented Where Forensic Engineering Was Effectively Utilized To Identify, Investigate, And Remediate The Problem As Well As Assist In Litigation.

Drilling Considerations on Spray Ice Island Structures: A Case History, OCS-Y-0302 Well No. 1, Beaufort Sea, Alaska

1987 ◽  
Author(s):  
H.T. Bowles ◽  
G.F. Boykin ◽  
B.S. Mamerow ◽  
M.A. Summers
Keyword(s):  
Case History ◽  
Beaufort Sea

Structure, Salinity and Density of Multi-Year Sea Ice Pressure Ridges

1985 ◽  
Vol 107 (4) ◽  
pp. 493-497 ◽  
Author(s):  
J. A. Richter-Menge ◽  
G. F. N. Cox
Keyword(s):  
Sea Ice ◽  
Large Scale ◽  
Beaufort Sea ◽  
Pressure Ridge ◽  
Sample Data ◽  
Ice Loads ◽  
Scale Properties ◽  
Ice Pressure

Data are presented on the variation of ice structure, salinity, and density in multi-year pressure ridges from the Beaufort Sea. Two continuous multi-year pressure ridge cores are examined as well as ice sample data from numerous other pressure ridges. The results suggest that the large scale properties of multi-year pressure ridges are not isotropic, and that the use of anisotropic ridge models may result in lower design ridge ice loads.

Model Tests on a Spar in Level Ice and Ice Ridge Conditions

2009 ◽  
Author(s):  
John Murray ◽  
Stephane LeGuennec ◽  
Don Spencer ◽  
Chang K. Yang ◽  
Wooseuk Yang
Keyword(s):  
Full Scale ◽  
Scale Model ◽  
Test Facility ◽  
Mooring System ◽  
Scaling Effects ◽  
Line System ◽  
Restoring Forces ◽  
Ice Conditions ◽  
Ice Loads ◽  
Level Ice

1:30 and 1:50 model-scale ice tests of an ice-resistant Spar design were carried out to determine the loads on the Spar in level ice and ice ridges. Due to limitations in the depth of the ice test facility, the hull draft and mooring system were truncated. The 1:30 scale model was towed through the ice on a fixed and compliant dynamometer. The stiffness characteristics of the compliant dynamometer matched the horizontal stiffness of the full-scale mooring system. The purpose of these tests was to compare the mooring and ice loads measured in fixed and compliant conditions. The 1:50 scale model was truncated by 70 m. Its mooring system was modeled using a four-line system designed to give the same global restoring forces as the full-scale mooring system. The model was fitted with vertical plates on the exterior of the hull to compensate for loss of added mass and added moment of inertia. A limited number of tests were carried out at the two model scales in the same ice conditions to investigate scaling effects. The mooring and ice loads measured in the fixed and compliant conditions were found to be similar, indicating that loads estimated, assuming the structure is fixed, provide good estimates. Good agreement between the two models was also found for the tests carried out in the same ice conditions, suggesting that the scaling effects may be negligible.

Sign in / Sign up

Export Citation Format

Share Document