A. 10 ppm B. 20 ppm C. 30 ppm D. 40 ppm « Previous Next »
Home safety USCG 460 If hydrogen sulfide exposure is anticipated, fixed monitoring devices aboard a MODU should have a low level concentration alarm to alert personnel when concentrations of this gas first reach a maximum of __________. A. 10 ppm B. 20 ppm C. 30 ppm D. 40 ppm « Previous Next »
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