Process safety modeling and analysis method based on finite state machine

Abstract The cause of the accident comes from the unsafe state of the system, and the development process of the accident reflects the dynamic change of the system state in the process. Aiming at the problem of complex system and process safety analysis under the human-machine-environment coupling effect, this paper proposes a process safety modeling and simulation analysis method based on a finite state machine, which is based on functional structure analysis, mechanism analysis, workflow analysis, and fault logic analysis. The process safety simulation analysis is completed in the Simulink/Stateflow environment, and the effective identification of the potential accident chain is realized by using the efficient traversal algorithm. Finally, a case study is given to verify the effectiveness of the proposed method.