Structural reliability analyses (SRA) are often required in the reassessment of existing structures; this is particularly the case for fixed platforms which would experience wave-in-deck loading at high return periods. A SRA allows the risk of platform failure to be quantified and the effect of any measures to mitigate the consequences to be understood. A key input into this analysis is the metocean loading in extreme conditions. Another is the probability of those conditions occurring.
OCG are able to conduct SRA using models that incorporate the latest understanding of hydrodynamic loading - this includes the full nonlinearity, irregularity and directionality of the wave field along with any wave-current interactions. Furthermore, by applying advanced statistical techniques OCG are able to provide a robust assessment of the reliability of an offshore structure.
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