Abstract: Domino effect analysis is one of the key components of the overall safety risk assessment for chemical parks. Combined with the regional quantitative risk assessment results of major hazard installations obtained by CASST-QRA, this paper conducts a comparative analysis of the domino impact range induced by explosion shock waves after the leakage of different types of equipment (facilities). A quantitative risk assessment method for the domino effect under credible accident scenarios is proposed. This approach addresses the problem of superimposed safety risks arising from the domino effect in chemical parks, and provides practical experience and an important reference for overall safety risk control and safety performance improvement in chemical parks.

Key words: chemical parks, domino effect, credible accident scenarios