EPA 608 609 Leak Detection and Repair 2

Question 1

What is the current EPA annual leak rate threshold that triggers mandatory repair for a commercial refrigeration appliance?

Accepted Answer

20%

Answer

10%

Answer

30%

Answer

35%

Question 2

Once a leak exceeding the trigger rate is found, how many days do owners generally have to repair the leak?

Accepted Answer

30 days

Answer

10 days

Answer

60 days

Answer

90 days

Question 3

A soap-bubble test is best described as which type of leak detection method?

Accepted Answer

Direct (visual/physical) method

Answer

Electronic

Answer

Ultrasonic

Answer

Fluorescent dye

Question 4

Which leak detection method involves adding a substance that glows under ultraviolet light?

Accepted Answer

Fluorescent dye tracer

Answer

Halide torch

Answer

Electronic sniffer

Answer

Nitrogen pressure test

Question 5

What gas is most commonly used to pressurize a system for leak testing without introducing refrigerant?

Accepted Answer

Dry nitrogen

Answer

Oxygen

Answer

Compressed air

Answer

Carbon dioxide

Question 6

Why should oxygen never be used to pressurize a refrigeration system for leak testing?

Accepted Answer

It can cause a violent explosion when mixed with oil

Answer

It is too expensive

Answer

It corrodes copper

Answer

It leaks too fast to detect

Question 7

If a leak repair attempt fails verification, the owner must do which of the following?

Accepted Answer

Conduct a follow-up verification and possibly develop a retrofit/retire plan

Answer

Vent the system and abandon it

Answer

Ignore it until next year

Answer

Top off the charge weekly