NCT Refrigerant Management & Environmental Compliance 3

Question 1

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

Accepted Answer

CO2 (R-744)

Answer

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.

Question 2

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

Accepted Answer

Within 30 days of discovery

Answer

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.

Question 3

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?

Accepted Answer

Date, technician name, amount added, and refrigerant type

Answer

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

Question 4

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

Accepted Answer

0

Answer

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

Question 5

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

Accepted Answer

Non-refillable disposable cylinders

Answer

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

(NCT) NAFA Certified Technician Practice Test

(NCT) NAFA Certified Technician Practice Test

NCT Refrigerant Management & Environmental Compliance 3