General Subjects (Auxiliaries & Systems) USCG Question #2167 (Set 33)

Which device is used to prevent over pressurization of the illustrated distiller? Illustration MO-0111

USCG Exam Illustration MO-0111
USCG Examination Diagram: Illustration MO-0111
Official USCG Answer & Rule Citation

Correct Answer: Option D — "26"

Device 26 is the relief valve, a critical safety component designed to protect the pressure vessel from over-pressurization. In accordance with 46 CFR requirements for pressure vessels, this valve automatically vents excess pressure to the atmosphere or a safe discharge point if the system pressure exceeds design limits.

100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.