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Project Number 215
Date of Summary March 31, 1995
Subject Study into the Strength Reliability of Offshore Structures
Performing Activity Lloyd's Register Offshore Division
Principal Investigator Dr. Katrina Coulter
Contracting Agency Minerals Management Service
Estimated Completion Complete
Description The purpose of this project was to use existing data to develop a model to evaluate aging offshore platforms. The factors considered in the model included realistic loading, performance, inspection and repair costs. A case study of selected older platforms were used to validate the model. Initially, an assessment was made of total system safety on these platforms. Next, an optimized decision model for extended platform life will be developed. The optimized model considered environmental and operational safety/production benefit analysis; inspection scheduling; repair and failure costs. The findings and recommendations of the study are expected to provide benchmarks on environmental and operational safety for older offshore platforms.
Progress Complete

Reports
AA (72 pages) File in Adobe's Portable Document Format (PDF) . Study into the Strength Reliability of Offshore Structures, Part 2: Probabilistic Collapse Strength, Final Draft Report submitted by Lloyd's Register, London, UK, May 18, 1994.
AB (27 pages) File in Adobe's Portable Document Format (PDF) . Nichols, N. W., Sharp, J. V., Kam, J. C. P.,Benchmarking of Collapse Analysis of Large Scale Ultimate Load Tests on Tubular Jacket Frame Structures, Presented at ERA Conference, November, 1994.
AC (73 pages) File in Adobe's Portable Document Format (PDF) . Preliminary Report: Study into the Strength Reliability of Offshore Structures, Lloyd's Register, London, UK, December 1993.
AD (28 pages) File in Adobe's Portable Document Format (PDF) . Supplement to Preliminary Report: Study into the Strength Reliability of Offshore Structures, Lloyd's Register, London, UK, January 1994.

 

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