In our analyses, we examined four major disasters of production platforms that occurred in the last 50 years: Ixtoc I, Piper Alpha, Petrobras 36 and Deep Water Horizon. ![]() This study demonstrates the possibility of using dual fault trees to describe the process as opposed to the structure. The starting point for developing these models was fault tree analysis used for modelling the reliability structure of complex systems. We propose trees in this article can be used as a tool for modelling phases of a disaster. Disasters can be modelled using block diagrams and multiphase process trees. ![]() Our approach is based on event network analysis. This article presents a calculation-based methodology to determine the dominant event class in each of the phases of disasters being analysed, and to address the question of whether different disasters have similarities at crucial times in each phase of the disaster.
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