The safety discs on carbon dioxide cylinders are set to release at 2,700 psi. Under normal circumstances this pressure will be reached at a temperature of __________.
Official USCG Answer & Rule Citation
Correct Answer: Option D — 135°F
Per 46 CFR and DOT regulations governing compressed gas cylinders, safety relief discs on CO2 cylinders are engineered to rupture at 2,700 psi, a pressure attained when internal temperatures reach 135°F due to liquid expansion.
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