Refrigerant Management & Environmental Compliance Flashcards

Which refrigerant has a Global Warming Potential (GWP) of approximately 1 and is classified as the reference standard?

Answer: CO2 (R-744)

Carbon dioxide (R-744) has a GWP of exactly 1 and serves as the baseline reference against which all other refrigerants' global warming potentials are measured.

When must a technician complete repairs on a leaking appliance with a charge of 50 lbs or more under EPA Section 608?

Answer: Within 30 days of discovery

EPA Section 608 requires that leaks in appliances with 50 lbs or more of refrigerant must be repaired within 30 days of discovering the leak.

What information must be recorded in a refrigerant tracking log when adding refrigerant to a system with a full charge of 50 lbs or more?

Answer: Date, technician name, amount added, and refrigerant type

EPA Section 608 requires recording the date, servicing technician, type of refrigerant, and amount added for appliances with charges of 50 lbs or more.

What is the ODP (Ozone Depletion Potential) of R-134a?

Answer: 0

R-134a has an ODP of zero because it contains no chlorine or bromine atoms that could destroy stratospheric ozone.

Which type of refrigerant cylinder is PROHIBITED from being refilled under DOT regulations?

Answer: Non-refillable disposable cylinders

DOT regulations prohibit refilling non-refillable (disposable) refrigerant cylinders, as they are not designed or tested for repeated pressurization.

Under EPA SNAP program, which of the following is an approved substitute for R-22 in residential air conditioning retrofit applications?

Answer: R-407C

R-407C is an EPA SNAP-approved retrofit substitute for R-22 in residential air conditioning systems, with similar operating pressures.

What is the purpose of the 'de minimis' exemption under EPA Section 608 venting prohibitions?

Answer: It exempts releases that are incidental to repair, not from venting

The de minimis exemption covers refrigerant released as an unavoidable consequence of good-faith repair work, such as small releases when connecting or disconnecting hoses.