Author: S Medonos, Petrellus Ltd. Proceedings of the European Safety and Reliability Conference ESREL 2003.
Quantitative Risk Assessment (QRA) uses “rule sets” to predict the effects of accidental loads on process facilities onshore and offshore. Rule sets for the survivability and functionality of pressurised systems affected by accidental fire often do not realistically predict the behaviour of the systems. This contributes to the uncertainties in the QRA and may lead to over-conservatism or inadequate design. This Paper suggests more realistic rule sets based on experiments, time-history simulations and tests. Limited escalation of the first fire within a fire zone should be broadly acceptable whilst design should focus on eliminating escalation between fire zones.
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