In order to study the influence of the leakage accidents on the human safety and environmental pollution during the bunkering operations,and to guide the safety of methanol bunkering operations,the simulation of bunkering leakage accidents and analysis of influencing factors are conducted based on the areal locations of hazardous atmospheres(ALOHA)model.A methanol leakage event tree is constructed based on factors such as ignition conditions,leakage source location and fire protection system response.Then the scenarios of toxic gas diffusion,flash fire and vapor cloud explosion that may occur during the leakage accidents are simulated,and the influence of environmental factors on the consequences of methanol leakage is further analyzed.The results show that in the set scenarios,the maximum distance of toxic diffusion is 1 450 m,the maximum distance of flash fire damage is 225 m,and the maximum diameter of vapor cloud explosion is 65 m.The atmospheric temperature and wind speed have a significant influence on the consequences of methanol leakage,and the maximum diameter of methanol vapor cloud explosion,toxic diffusion and flash fire damage increase with the increase in atmospheric temperature and decrease with the increase in wind speed.However,relative humidity and cloud cover have little effect on the consequences of methanol leakage.The research results can provide some guidance for methanol bunkering operations.
关键词
甲醇燃料/加注泄漏/ALOHA模型/影响因素分析
Key words
methanol fuel/bunkering leakage/areal locations of hazardous atmospheres(ALOHA)model/analysis of influence factors
维普
万方数据