Motor Plants & Auxiliary Boilers USCG Q#493 (Set 12)

What is used as the primary operating medium during the sludge discharge cycle, shown in the illustration? Illustration MO-0112

USCG Exam Illustration MO-0112 — USCG Examination Diagram: **Illustration MO-0112**

Official USCG Answer & Rule Citation

Correct Answer: Option D — Water

Clean fresh water or service water acts as the primary hydraulic operating medium supplied via solenoid valves to actuate the sliding piston during sludge discharge.

All Motor Plants & Auxiliary Boilers Sets Practice Set 12