PHAST-based Simulation of Hazard Range of Consequences of Natural Gas Pipeline Leakage
In order to solve the problems of accidents caused by natural gas pipeline leak,based on relevant calculation theories and injury criteria,PHAST software was used to analyze factors such as different transmission pressures,leak aperture,ambient wind speed,and leak direction,and determine the range of casualties for indoor and outdoor personnel under different working conditions.Research has shown that the most serious factor affecting fire and explosion accidents is the leakage bore diameter,and the impact size on the radius of casualties is fireball>jet fire>vapor cloud explosion,and the distance of casualties caused by accidents is greater outdoors than indoors.According to the national relevant calculation formulas,the potential impact radius of a certain pipeline under operating conditions is slightly lower than the simulated value.Therefore,the setting of the potential impact radius in the national standard is slightly conservative.The research results can provide reference for the study of the influencing factors and hazard range of natural gas dispersion.
natural gas pipelinejet firefireballvapour cloud explosionPHAST
国家科技期刊平台
NSTL
万方数据
维普
