USCG USCG Steam
Set 1 • Question #1 of 496
Launch Interactive Practice Room If a ship is to be laid up for an indefinite period, the saltwater side of the main condenser should be __________.
A
left filled with saltwater with the sea valves closed
B
left filled with saltwate r with the sea valves open
C
drained and refilled with saltwater after closing the sea valves
D
drained and dried out after closing the sea valves
✓ Correct Answer
USCG NMC Regulatory Explanation
During prolonged vessel lay-up, draining and thoroughly drying out the saltwater side of the main condenser prevents stagnant seawater from causing localized pitting corrosion and galvanic attack on copper-nickel or brass condenser tubes and tube sheets.
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