Tankerman · Vapor Control
A vapor control system (VCS) used during loading is designed to:
- AIncrease the loading rate without limit
- BAdd oxygen to the tank
- CCollect cargo vapors displaced from the tank and route them to shore or a recovery/destruction unit✓ Correct
- DCool the cargo
Explanation
A VCS captures the vapor pushed out of the tank as it fills and returns it to shore for recovery or destruction, reducing emissions and the explosion hazard of venting to atmosphere. Overfill protection and detonation arresters are integral.
Authority: 33 CFR 154 Subpart E (vapor control systems); 46 CFR 39
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