Regulations require that cargo pumprooms on tank barges (constructed in 1965) carrying grades B or C liquid cargoes have power ventilation systems. In what time period can these systems completely change the air?
Official USCG Answer & Rule Citation
Correct Answer: Option B — 3 minutes
Title 46 CFR mandates that cargo pumprooms on tank barges handling Grade B or C liquid cargoes must feature power ventilation systems capable of completely changing the air volume within three minutes to effectively prevent hazardous vapor accumulations.
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