Petri net modeling for the emergency response to chemical accidents

Emergency response is very important to reduce the loss of an accident and a good emergency plan can ensure the high efficiency of the emergency response. However, actions of emergency response arranged in emergency plan can hardly be assessed before the plan is used. In this paper, a colored hybrid Petri net (CHPN) is proposed to analyze the emergency response actions. The actions having long duration are considered as continuous processes, such that the CHPN contains discrete and continuous places and transitions. The emergency actions of an oil depot work team leader when a fire begins are modeled as a demonstration by using CHPN.