这起事故发生在距意大利第二大城市米兰仅20公里的塞维索镇附近,是一场严重的毒气泄漏事件,事故涉及11个城镇22万人口,总经济损失达一亿美元以上。1976年6月的一个周末,座落在人口稠密地区的ICMESA工厂的一个化学反应器内发生了意外的放热反应,产生的巨大压力冲破安全阀通向安装在 The accident took place near the town of Ceviso, just 20 kilometers from Milan, the second largest city in Italy. It was a serious gas leak involving more than 220,000 people in 11 cities and towns with a total economic loss of over 100 million U.S. dollars. One weekend in June 1976, an unexpected exothermic reaction took place in a chemical reactor at the ICMESA plant in a densely populated area, generating enormous pressure to break through the safety valve to a