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What checks of atmosphere in enclosed or confined spaces to be done prior entering?

09 Jun '18, 01:29

June 9, 2018, 1:29 a.m.
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Prior to entering conduct testing of the atmosphere to ensure maintenance of 21% oxygen and a carbon monoxide content below 50 ppm in the atmosphere of the space. The level of Benzene and H2S must be 0.

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09 Jun '18, 01:31

June 9, 2018, 1:31 a.m.
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