USCG USCG General Eng
Set 12 • Question #117 of 498
Launch Interactive Practice Room Permanent centrifugal pump shaft damage due to erosion, corrosion, and wear at the stuffing box is usually prevented by __________.
A
wearing rings
B
renewable sleeves
✓ Correct Answer
C
a hardened sprayed metal coating
D
internally flooded lantern rings
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'Permanent centrifugal pump shaft damage due to erosion, corrosion, and wear at the stuffing box is usually prevented by', the standard operating requirement is: 'renewable sleeves'.
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