EPA 608 609 - EPA Refrigerant Handling Leak Detection and Repair Questions and Answers 3

Question 1

What is the allowable leak rate threshold for industrial process refrigeration equipment with a charge of 50 or more pounds before repair is required?

Accepted Answer

30% per year

Answer

10% per year

Answer

20% per year

Answer

35% per year

Question 2

Which type of leak detector is considered the most sensitive and can detect refrigerant concentrations in the parts-per-billion range?

Accepted Answer

Infrared (IR) sensor detector

Answer

Heated diode detector

Answer

Ultrasonic acoustic detector

Answer

Halide torch

Question 3

What is the primary limitation of using soap bubbles for refrigerant leak detection?

Accepted Answer

Ineffective for detecting small or slow leaks

Answer

Cannot be used on copper tubing

Answer

Only works with CFC refrigerants

Answer

Damages system components on contact

Question 4

Under EPA Section 608, what is a technician required to do if a leak cannot be repaired immediately after discovery?

Accepted Answer

Recover remaining refrigerant if system cannot be repaired promptly

Answer

Continue operating the system and monitor monthly

Answer

Add more refrigerant to compensate for the leak

Answer

Seal the leaking area with tape as a temporary measure

Question 5

What causes a halide torch to change flame color when detecting chlorine-containing refrigerant leaks?

Accepted Answer

Combustion of chlorine compounds producing copper chloride

Answer

Oxygen depletion near the leak source

Answer

UV radiation from the refrigerant gas

Answer

Increased gas pressure near the detector nozzle

Question 6

When performing a leak check after a system repair, which area should always be prioritized first?

Accepted Answer

The area where the repair was made

Answer

The evaporator coil fins

Answer

The compressor electrical terminals

Answer

The expansion valve body