Engine Refrigeration (Supplementary) USCG Q#316 (Set 5)

The amount of HCFC-123 in a storage cylinder is measured by what means?

Official USCG Answer & Rule Citation

Correct Answer: Option D — weight

Refrigerants like HCFC-123 must be measured strictly by weight utilizing calibrated charging scales to prevent overpressurization or liquid slugging hazards during system recharging operations.

All Engine Refrigeration (Supplementary) Sets Practice Set 5