Tankerman · Vapor Control — Detonation Arrester
A detonation/flame arrester in a vapor control system is fitted to:
- AIncrease vapor flow
- BCool the vapor
- CMeasure vapor concentration
- DStop a flame front from propagating back through the vapor line into the tank✓ Correct
Explanation
When vapors are collected to shore/another vessel, a detonation or flame arrester prevents an ignition outside the system from flashing back through the vapor piping into the cargo tanks. Vapor-control transfers have specific equipment and procedural requirements.
Authority: 33 CFR 154/156 Subpart E; ISGOTT
Practice the full Tankerman bank
Free spaced-repetition quizzing across 2190 USCG exam questions — it schedules your reviews so the ones you miss come back until they stick.
Related Tankerman questions
- Transfer — PIC
During a cargo transfer on a tank vessel, the Person-In-Charge (PIC) is primarily responsible for:
- Transfer — DOI
Before a transfer of oil or hazardous material begins, the PICs of the transferring and receiving facilities must complete and agree on a:
- Safety — Inert Gas
The purpose of an inert gas system on a tanker is to:
- Safety — Inert Gas
A cargo tank is generally considered properly inerted when the oxygen content is held at or below:
- Safety — Flammability
A hydrocarbon vapor/air mixture will burn only when its concentration is:
- Safety — Static
To prevent a static-electricity ignition hazard during loading of a static-accumulating cargo, the tankerman should: