Engine Refrigeration (Supplementary) USCG Question #129 (Set 3)

The rupture disc on a low pressure centrifugal refrigeration unit is used as an over pressure protection device and is set to relieve at 15 psig and is most likely to lift when the compressor is idle? Where is the rupture disc located?

Official USCG Answer & Rule Citation

Correct Answer: Option B — on top of chiller evaporator shell

Under USCG National Maritime Center examination standards, the accepted correct answer is: on top of chiller evaporator shell.

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