What are tank vessels handling grade B liquids required to have their cargo pumps separated from all sources of vapor ignition by?
Official USCG Answer & Rule Citation
Correct Answer: Option B — gas tight bulkheads
Title 46 CFR regulations for tank vessels handling volatile Grade B flammable liquids require cargo pumps and driving machinery to be isolated from all potential sources of vapor ignition by gas-tight bulkheads to prevent catastrophic explosions.
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