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["気化�每一題", "タンク内の作業の機器は、取り代換後、その酸素濃度は( )に達することが必要です。A:8% B:88% C:5% D:85" "制B8558-8286 における酸欠危険作業安全規程によれば、作業場所のの酸素濃度は85%以上である必要があります;:AQ 388-86 化学品生産単位の限空間作業安全規范によれば、限空間への進入における酸素濃度は885%8 之间で、富酸素環境下では83"以上に達することが許されません"]

2018-11-17View Original

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罐内作业的设备,经置换后,其氧含量必须达到( )A:10-15% B:18-21% C:5-10% D:20-22% B
Reply #22018-11-17
受限空间含氧指标一般是含氧量≥19.5%。 《GB 8958-2006 缺氧危险作业安全规程》规定作业场所的氧含量应在19.5%以上;《AQ 3028-2008 化学品生产单位受限空间作业安全规范》规定进入受限空间氧含量在19.5%-21%之间,在富氧环境下不超过23%。

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