Risk Propagation Evolution Analysis of Oil and Gas Leakage in FPSO Oil and Gas Processing System by Mapping Bow-Tie into Directed Weighted Complex Network

An innovative methodology is proposed to identify potential risk factors and possible accident escalation consequences, determine the evolution of an from cause consequence, thereby most probable path discover key along rapidly. Based on principle a directed weighted complex network (DWCN), bow-tie (BT) model, entropy improved ant colony optimization (IACO) algorithm are integrated into this methodology. First, qualitative analysis based BT model carried out. The development suppression can be divided two stages: precursor stage stage. Then, new method for mapping DWCN proposed. Lastly, shortest IACO out, fuzzy set theory (FST) introduced calculate failure probability factors, used represent uncertainty propagation. Thus, evolution. applied oil gas leakages in FPSO processing system. results show that it effective vulnerable factors.