案例:曾有一家化工厂,生产农药的中间体———五氧化磷,使用原料有光气,完全是管道化生产,但有一次光气管道的阀门被冲开,大量的光气泄露,当时班长拿起阀门将其安回原处,阻止了泄露,但在场的四名工人,均发生了轻重不同的光气中毒,被送到医院抢救,但该院病床不够,需将一人转院, Case: there was a chemical plant, the intermediate of pesticide production --- phosphorus pentoxide, the use of raw materials is phosgene, is entirely pipeline production, but there is a phosgene pipeline valve was washed away, a large number of phosgene leaks, At that time, the squad leader picked up the valve and put it back to its original place to prevent the leak. However, all the four workers in the scene were suffering from different levels of phosgene poisoning and were sent to the hospital for rescue. However,