Tankerman · Equipment — High-Level Alarm
A tank overfill (high-level) alarm should be regarded as:
- AThe primary means of controlling the level
- BOptional equipment
- CA backup that warns if normal gauging and topping-off control fail✓ Correct
- DA substitute for the DOI
Explanation
The high-level/overfill alarm is an independent backup. Primary level control is by the PIC's gauging and topping-off plan; relying on the alarm to stop loading is poor practice and risks overflow.
Authority: 33 CFR 155.480 (overfill devices); 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
- Equipment — High-Level Alarm
A cargo tank high-level alarm is intended to:
- 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: