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防火防爆是气焊与气割安全工作的重点 | 2012-2-19 20:39:00
防火防爆是气焊与气割安全工作的重点
首先,气焊与气割所使用的介质如电石、乙炔等的燃爆危险性都很大,而且同时存在氧气,一旦遇到火源,很容易发生燃烧爆炸。 其次,乙炔发生器是容易发生着火爆炸的设备。一旦发生回火,乙炔胶管和氧气胶管也可能发生着火爆炸。 再次,在存有可燃爆炸性混合气体和其它易燃物的场所,气焊火焰及气焊时产生的火星、熔珠和熔渣都有可能成为火灾爆炸事故的点火源。乙炔--氧气火焰温度为3100~ 3300℃,较大的熔珠和熔渣能飞溅到距操作点 5米以外的地方,如遇到可燃爆炸性混合气体或可燃易燃物品,就可能发生火灾爆炸事故。 所以说,火灾和爆炸是气焊的主要危险,防火与防爆是气焊与气割安全工作的重点。

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