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1987年6月1日下午,在我厂职工学校的施工工地上,正在紧张地进行屋顶面的混凝土浇注工作。建筑工程队的黄某,从塔吊吊钩上去取吊上屋顶的石子时突然触电,经抢救无效而死亡。塔吊和卷扬机是一个整体,开卷扬机的人和在地面上挂起吊物的人都没有触电,而且黄某在吊钩上取起吊物时,卷扬机已停止运行切断了电源。这电从何而来呢?经过仔细调查分析和测试,发现屋顶施工用的振动器的电源接线盒处,有一相线绝缘破损,用黑胶布包扎。施工中,由于胶布被浸湿,同时振动器不
On the afternoon of June 1, 1987, on the construction site of the staff and workers’ school in our factory, the concrete pouring on the roof surface was being carried out nervously. Hwang construction team, from the crane hook to take the roof hanging stones suddenly electric shock, died of invalid rescue. Tower crane and winch is a whole, unwinding hoist and hanging on the ground were no electric shock, and Hwang picked up from the hook on the hanging when the winch has stopped running cut off the power. Where did this electricity come from? After careful investigation, analysis and testing, it was found that there was a one-phase insulation breakdown at the power junction box of the vibrator for roof construction, which was wrapped with vinyl tape. During construction, the tape is wet while the shaker is not wet