USCG Exam PracticeRefrigeration and air conditioning
Under 46 CFR §58.20-5, pressure components of a fixed marine refrigeration system may NOT be designed for a pressure less than which of the following?
- A. The maximum allowable working pressure stamped on the compressor nameplate
- ✓ The pressure for which the safety devices of the system are setCorrect
- C. The pressure listed in the ABS Marine Vessel Rules for the specific refrigerant used
- D. Twice the normal operating discharge pressure of the compressor
Why B is correct
46 CFR §58.20-5(a) states explicitly that in no case may pressure components be designed for a pressure less than that for which the safety devices of the system are set, ensuring the components can withstand the maximum pressure at which safety devices will allow the system to operate.
Cited:46 CFR §58.20-5