LPG储罐火灾与爆炸事故分析

近几年我国许多地方都新建了具有一定规模的LPG存储站,LPG储罐的安全可靠运行对安全生产和国民经济有着重大的影响。而LPG储罐容易受到人为因素和自然现象的影响而发生火灾、爆炸等恶性事故。通过对引起LPG储罐发生火灾、爆炸的因素进行了系统分析,建立了以LPG储罐火灾、爆炸为顶事件的事故树。通过对储罐火灾、爆炸事故树的分析,得到了事故树的各阶最小割集,通过对基本事件结构重要度的计算,确立了影响储罐事故的主要因素为LPG储罐超压和LPG泄漏,并提出了相应的改进措施以提高LPG储罐的运行可靠性。

ANALYSIS OF LPG TANK FIREED & BLASTED ACCIDENTS

Recent years, many LPG gas storage stations have been built in many places in our country, the safe and reliable running of the LPG tank is highly significant for the safe production and civil economy. LPG tanks are easy to be fired and blasted under the human factors and natural phenomena. Allfactors made the LPG tank fired and blasted were analyzed, and the fault tree with failure of LPG tank fired and blasted as the top subject was established in the paper. The minimum cut-set of the fault tree was obtained through analyzing the fired and blasted fault tree. The major factors made the LPG tank fired and blasted were the higher pressure of LPG tank and the leakage of LPG tank, and the improvement measures of the running reliability of the LPG tank were presented in the paper.