Relative risk model for assessing domino effect in chemical process industry

Abstract

In the world especially in China, domino accidents lead to great losses of life and property. The frequency of one LOC, which is hard to estimate, is the key for the current methods. A new methodology called relative risk analysis is presented, which focuses on the discrepancy of potential losses between two domino scenarios. Moreover, the synergetic effects, which can lead to more serious losses, can be taken into account by this method. And the possibility of one specific complex propagation pattern is not necessary. The methodology is based on the damage map which can describe damage levels and impacted region caused by the domino accidents. It can be used to find a much safer layout for the process plants and better emergency plans.