某造纸厂仓库存放26瓶液氮罐。1997年8月25日上午突然一瓶液氯罐安全阀门失效致使氯气泄漏，氯气不断地从仓库向外冒出白色刺鼻的烟雾。当即副厂长和车间主任二人迅速戴着滤过式防毒口罩进入现场处理，但在拧紧安全阀时发生阀门断裂，造成更大量的氯气喷泄而出，二人在短时间内 A paper mill warehouse storage of 26 bottles of liquid nitrogen tank. On the morning of August 25, 1997, suddenly a bottle of liquid chlorine tank safety valve failure caused the chlorine gas to leak and chlorine continuously emitted white pungent smoke from the warehouse. Immediately deputy factory director and workshop director duly wearing filter-type anti-virus masks into the scene, but when the safety valve tightened valve rupture, resulting in a greater amount of chlorine gas jet out, the two in a short period of time