关键词: PHAST 软件模拟, LPG 罐车, 泄漏爆炸, 事故反演

Abstract: The inherent hazards of LPG and the types of leakage accidents were summarized, then the simulation analysis of the consequences about a leak explosion accident of an LPG tanker was carried out by using PHAST software. The simulation results show that the leak explosion overpressure consequences of the discharge pipe on the LPG tank truck can better reflect the actual damage of the explosion center, but it cannot reach the damage level of the building within the range of 320 m to 500 m in the accident report; the simulated consequences of the LPG tank truck complete rupture are still smaller compared with the actual damage degree of the accident, which is closely related to the Domino effect caused by the explosion fragments hitting the surrounding storage tanks. Therefore, the PHAST software effectively reproduced the initial process of the LPG tank truck leak explosion accident, which can provide help for the safety management, accident investigation and accident consequence inversion of the hazardous chemical leakage and explosion accidents.

Key words: PHAST (Process Hazard Analysis Software Tool) simulation, LPG tank truck, leakage explosion, accident inversion