USCG Exam PracticeRefrigeration principles and systems
Under 46 CFR §58.20-15, anhydrous ammonia refrigerating machines installed aboard a vessel must be located in a well-ventilated, isolated compartment. Which installation is specifically prohibited unless the arrangement eliminates the hazard of gas escaping?
- A. Installation in a compartment located below the waterline
- ✓ Installation in the engine room spaceCorrect
- C. Installation in any space not fitted with a sprinkler system
- D. Installation in any space that is not on the weather deck
Why B is correct
46 CFR §58.20-15(a) states that in no case is it permissible to install anhydrous ammonia machines in the engine room space unless the arrangement eliminates any hazard from gas escaping to the engine room. The regulation prefers deck installation but does not absolutely prohibit below-waterline spaces.
Cited:46 CFR §58.20-15