氮气是一种无色无味的惰性气体,在大气压力条件下对机体有危害作用,主要是降低肺部氧气压,使机体缺氧而窒息,以致死亡。1983年5月25日22点,在马鞍山钢铁公司第三炼钢厂连铸施工工地净循环水系统试车过程中、由于忽视安全措施,在既无试运行方案,又无操作程序的情况下对管网系统大排空,造成氮气随之排入管,使下管廊操作阀门的两名技校实习学生被氯气窒息而死亡。正常条件下氮气的活性比较低。氮气窒息仅发生在当密闭空间内机器部件发生故障,环境空气很快被氮气所污染时,或者矿 Nitrogen is a colorless, odorless inert gas, under atmospheric pressure, hazardous to the body, mainly to reduce the oxygen pressure in the lungs, so that the body suffocated oxygen deficiency, resulting in death. On May 25, 1983, at 22 o’clock, during the trial run of the net circulating water system in the continuous casting construction site of No.3 Steel Mill of Maanshan Iron & Steel Company, due to the neglect of safety measures, in the absence of trial operation and no operation procedure Large emptying of the pipe network resulted in the discharge of nitrogen into the pipe, resulting in the death of two technicians in the lower pipe gallery who were choked by chlorine gas. Under normal conditions nitrogen activity is relatively low. Nitrogen suffocation only occurs when machine parts in a confined space fail, ambient air is quickly contaminated with nitrogen, or ore