USCG USCG General Eng
Set 17 • Question #245 of 498
Launch Interactive Practice Room Prussian blue is used to __________.
A
check heat exchangers for leaks in the waterside
B
check the fit of a seat and disc of a valve
✓ Correct Answer
C
check for leaks in a R-12 system if a Halide torch is not available
D
trace condensate flow in an impulse steam trap
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'Prussian blue is used to', the standard operating requirement is: 'check the fit of a seat and disc of a valve'.
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