Study on the Warning Area for Gas Pipeline Network Jet Fire Accidents
In order to accurately delineate the warning range at the scene of gas leakage accidents the warning range of urban gas pipeline network accidents is taken as the research object.The PHAST software is used t to simulate the range of thermal radiation effects caused by jet fire accidents in a gas pipeline of a certain gas company in Tianjin after pipeline damage at dif-ferent wind speeds.Then the influence range of thermal radiation is used to delimit the severe and mild grade danger area,and the risk prevention counter measures are put forward.The results show that wind speed significantly affects the range of gas leakage accidents.With the increase of the wind speed,the jet fire radiation intensity of the same distance point decrea-ses,and the distance of the peak thermal radiation is shortened.For the increase of the wind speed by 5m/s,the thermal ra-diation intensity decreases by about 4kW/m2,and the range of peak decreases by about 1.5m.Considering the impact of jet fire,the warning area with thermal radiation flux of 12.5kW/m2 is considered as severe hazard area,and the area with ther-mal radiation flux of 4kW/m2 is considered as mild hazard area.The results can provide theoretical basis for the layout of fire force and the formulation of emergency plan.
gas pipe networkleakagea jet firewarning areathe accident consequences
NETL
NSTL
万方数据
维普
