Quantitative collision risk assessment of a fixed-type offshore platform with an offshore supply vessel

Offshore installations are designed to withstand against potential collisions from offshore supply vessels (OSV). Quantitative risk assessment (QRA) provides an overall picture of expected collision frequencies and consequences for the design life a platform subsequently estimates damage repair cost. However, main challenge QRA study is how well various uncertainties implemented into model. This aimed introduce demonstrate advanced efficient model between OSV jacket type platform. A set fifty scenarios were selected using probabilistic sampling techniques, vessel motion analyses performed determine load characteristics. Extensive nonlinear structural crashworthiness conducted computational modelling cost damaged brace column members calculated. Probability exceedance diagrams established different consequence parameters, asset risks comparison values parameters costs carried out in association with NORSOK HSE acceptance criteria. sensitivity was effects on consequences. The methods insights developed this could be applied both new existing platforms practically useful owners aid their decision-making process towards risk-based safety analysis platforms.