Tankerman · Vapor Control — Marine Vapor Control System
A marine vapor control system (VCS) used during loading is designed to:
- ACool the cargo to freezing
- BAdd oxygen to the cargo tanks
- CIncrease the loading rate without limit
- DCollect cargo vapors displaced from the tanks and route them ashore (or to recovery/destruction) instead of venting to atmosphere✓ Correct
Explanation
A VCS captures the vapors pushed out of cargo tanks as liquid loads in, conveying them through a vapor header to a shore vapor-recovery or destruction unit. It reduces emissions and the explosion hazard around the vessel, and is regulated under 33 CFR 154 Subpart E and 46 CFR Part 39.
Authority: 33 CFR Part 154 Subpart E; 46 CFR 39
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