EPA Section 608 Universal Certification ExamCoreHard
Under EPA Section 608 regulations, what is the maximum permissible level of non-condensable gases in a recovered refrigerant cylinder that is intended for reuse?
- A100 ppm by weight.
- B150 ppm by weight.
- C0 parts per million (ppm) by weight.
- D50 ppm by weight.
Show answer & explanationAnswer & explanation
Correct answer: B. 150 ppm by weight.
For recovered refrigerant to be reused in the same or another appliance, it must meet specific purity standards. The EPA specifies that non-condensable gases (primarily air) must not exceed 150 parts per million (ppm) by weight in the recovered refrigerant.
Why the other options are wrong
- A. 100 ppm is stricter than the EPA's requirement for non-condensables in recovered refrigerant for reuse.
- C. 0 ppm is an unrealistic standard for recovered refrigerant; some impurities are always present.
- D. 50 ppm is a very strict purity standard, typically for new or reclaimed refrigerants, not just recovered.
Recovered Refrigerant Purity
EPA Section 608 sets purity standards for recovered refrigerants, particularly for non-condensable gases, if they are to be reused.
- Non-condensable gases increase head pressure and reduce efficiency.
- Purity standards vary for recovered (reused), recycled, and reclaimed refrigerants.
- 150 ppm by weight is the limit for non-condensables in recovered refrigerant for reuse.
- Testing equipment is required to verify purity.
Memory trick: One-fifty ppm, for recovered gas, is the clean air class.