Deck : Deck General - 3148/5076
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| When H2S has been encountered on a MODU, or is anticipated, monitoring devices must sound an alarm (which differs from the lower concentration alarm) or otherwise warn employees when concentration of H2S reaches or exceeds how many parts per million? |
| A) 20 |
| B) 50 |
| C) 100 |
| D) 200 |
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