Question 151Safety & Environmental - 1st Asst/Chief
70% to passWhen pumping sour crude, which gas should be tested for prior to entering the cargo pump room to repair a leaking pump?
ABenzene
BCarbon monoxide
CHydrogen sulfide
DTetraethyl lead
AI Explanation
The correct answer is C) Hydrogen sulfide. When pumping sour crude, the primary hazard is the presence of hydrogen sulfide (H2S), a highly toxic and flammable gas. Before entering the cargo pump room to repair a leaking pump, the atmosphere must be tested for H2S, as exposure can be life-threatening. The other options, such as benzene, carbon monoxide, and tetraethyl lead, are not the critical gas to test for in this specific scenario involving sour crude.
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