Abstract: The safety of styrene tank farm whose harm was serious was evaluated by Dow Chemistry Method. According to the actual situation of tank farm, the typical storage tanks to be evaluation units were selected, then the risk coefficient of technologies was analyzed, and the fire-explosion index, exposure radius and regions were calculated. The fireexplosion index and class could be effectively reduced by some safety measures compensating. The results showed that this method could comprehensively and effectively evaluate the potential fire and explosion hazards in the styrene tank farm.

Key words: Styrene, Benzene, Ethylbenzene, Dow Chemistry Method, Fire, Explosion, Safety evaluation

摘要： 以道化学法为理论依据，对事故危害严重的苯乙烯罐区进行了安全评价。根据罐区的实际情况，选取具有代表性的储罐为评价单元，分析工艺危险系数，定量计算火灾爆炸指数、暴露半径和暴露区域。通过采取安全措施并进行补偿评价，能有效地降低火灾、爆炸危险指数及等级。计算结果表明，道化学法能全面有效地对苯乙烯罐区潜在的火灾、爆炸危险进行安全评价。

关键词: 苯乙烯, 苯, 乙苯, 道化学法, 火灾, 爆炸, 安全评价