实验楼层内危险气体泄漏人员撤离预案研究

Study of personnel evacuation plan on dangerous gas leakage on experimental floor

通过数值模拟手段,分析实验室楼层内危险气体扩散过程,研究实验室楼层内人员最佳撤离预案。研究显示:在危险气体扩散过程中,楼层人员必须在160s内全部撤离;氨气泄漏速率较低时,须在泄漏实验室门洞连接走廊通道处设置机械通风装置;当氨气泄漏速率达到0.05 g/s时,除设置机械通风装置外,还需在以上走廊通道的联通空间中设置机械通风系统;在氨气泄漏速率大于0.1 g/s时,应设置全面通风设置,需全面降低整个楼层的氨气浓度。

By means of numerical simulation, the diffusion process of dangerous gas in the laboratory floor is analyzed, and the best evacuation plan for personnel in the laboratory floor is studied. The research shows that in the process of dangerous gas diffusion, all the people on the floor must evacuate within 160 s, when the ammonia leakage rate is low, mechanical ventilation device shall be set up at the corridor connecting the leakage laboratory door opening, when the ammonia leakage rate reaches 0.05 g/s, in addition to the mechanical ventilation device, mechanical ventilation system shall also be set up in the connecting space of the above corridor channel, and when the ammonia leakage rate is greater than 0.1 g/s, comprehensive ventilation should be set up to reduce the ammonia concentration of the whole floor.