A large low-pressure chiller needs a shaft seal replacement, a common leak point on this equipment. What should happen first, before the seal is removed?
A. The refrigerant must be recovered to the required evacuation level before the seal area is opened
B. The building fire alarm should be manually triggered as a precaution
C. The refrigerant should be vented to reduce pressure before removing the seal
D. The chiller should be immediately scrapped rather than repaired
Source: 40 CFR 82.154; 40 CFR 82.156
Of recovery, recycling, and reclaiming, which one does NOT necessarily involve testing or processing the refrigerant at all?
A. Recovery
B. Recycling
C. Reclaiming
D. All three always require full AHRI 700 purity testing
Source: 40 CFR Part 82, Subpart F (recovery/recycling/reclaiming definitions)
What standard must recovery and/or recycling equipment be certified to under §82.158?
A. ARI/AHRI 740
B. AHRI 700
C. ISO 9001
D. NFPA 70
Source: 40 CFR 82.158
Why does the EPA regulate the handling of refrigerants under the Clean Air Act?
A. Refrigerants released to the atmosphere can deplete the stratospheric ozone layer or contribute to climate impact
B. Refrigerants are flammable and pose a fire code violation if not tracked
C. Refrigerant cylinders are considered hazardous waste containers under RCRA
D. Refrigerant sales generate excise tax revenue that must be reported to EPA
Source: 40 CFR 82.150
A technician is recovering refrigerant from a system and a small puff escapes when disconnecting a hose despite proper procedure. Separately, a second technician opens a service valve to the atmosphere to empty a system faster instead of using recovery equipment. Which of these is a violation of §82.154?
A. Only the second technician's action, because opening a valve to the atmosphere to avoid recovery is a knowing vent, not a de minimis release
B. Only the first technician's action, because any escaping refrigerant is automatically a violation
C. Both actions are violations
D. Neither action is a violation because both technicians were performing service work
Source: 40 CFR 82.154
