Abstract: 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. All
factors 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.

Key words: LPG tank, accident, causation, analysis, fault tree