EPA 608 Core · Safety · Easy
Why must you never heat a refrigerant cylinder with an open flame?
Answer: A. Pressure can build until the cylinder ruptures.
- APressure can build until the cylinder ruptures.✓ Correct
- BThe refrigerant will degrade into an acid.
- CThe pressure relief valve will permanently lock.
- DThe paint will burn off.
Why A is right
Direct heat causes rapid liquid expansion and extreme pressure, leading to an explosion.
More Core questions
- What personal protective equipment (PPE) is essential when handling refrigerants?
- What physical hazard does liquid refrigerant pose to skin?
- What can happen if CFC or HCFC refrigerants are exposed to high heat or open flames?
- What happens when refrigerant vapor is inhaled in large quantities?
- Which ASHRAE safety classification applies to mildly flammable refrigerants like R-32 and R-454B that are replacing high-GWP HFCs under the AIM Act?
Go deeper with the study guide A2L Refrigerants and the R-410A Transition: A Tech’s Guide, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.