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RR344 - The effects of multiple member failure on the risk gross collapse over typical inspection intervals

This report is a continuation of work intended to examine the conservatism of existing practice for establishing the reliability of offshore structures. Specifically, it examines whether ignoring platform collapse from multi-member failed conditions is significant or not. Probabilistic fracture mechanics calculations are used to predict the probability of individual member failures and the effects of stress redistribution on the integrity of neighbouring joints is examined. The report concludes that multimember failures may result in large reductions in platform strength which can have a significant effect on platform reliability predictions.

Visit the RR344 report (PDF) [12]

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Updated 2021-04-19