Application of Petri nets in dynamic process modeling of chemical emergency management

Chemical emergency response process is a dynamic complex process. To improve the effectiveness of emergency management, Petri nets are applied to model dynamic process of chemical emergency response process in this paper. A dynamic process model of emergency management is built based on hybrid Petri nets and hierarchical object-oriented Petri nets. The result reveals that the model can indicated the properties of Continuity, timeliness, interactive and multiple possibilities of emergency response process.