Simulation Study of LPG Leakage and Explosion Accident Based on ALOHA
Aiming at liquefied petroleum gas(LPG)leak diffusion and explosion problem,using LPG tanker leak explosion accident as the background of the study,the causes and nature of this explosion accident were explored,and ALOHA software was used to simulate the consequences of the explosion caused by the accident leak,considering the influence of leakage,wind speed,relative humidity,ground roughness and other factors on the thermal radiation range of fire and the flammable area range of vapor cloud diffusion,and the scope of accident harm was given quantitatively.The results showed that,the LPG tanker leakage explosion overpressure consequences could better reflect the actual damage of the explosion center,and the larger the leakage volume,the larger the thermal radiation hazard range,the larger the fireball diameter;the greater the relative humidity of the environment,the smaller the thermal radiation hazard range;the greater the wind speed,the smaller the ground roughness,the smaller the maximum distance downwind of the vapor cloud diffusion.The initial process of the accident was reproduced by ALOHA software,in order to provide some theoretical reference and technical support for the prevention,emergency rescue and accident consequence inversion of such accidents.
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