USCG USCG General Eng
Set 9 • Question #486 of 498
Launch Interactive Practice Room When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas?
A
CO2
B
Methyl chloride
C
R-22
✓ Correct Answer
D
Sulphur dioxide
USCG NMC Regulatory Explanation
In USCG Marine Engineering General Subjects, for engine room systems involving 'When subjected to high heat from a open flame, or an electric heating element, which of the listed refrigerants will break down and produce phosgene gas', the standard operating requirement is: 'R-22'.
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