EPA 608 609 Leak Detection and Repair 3

Question 1

An electronic leak detector responds to which characteristic of refrigerant?

Accepted Answer

Its presence in the air near a leak

Answer

Electronic detectors sense refrigerant vapor concentration in the air near a leak.

Question 2

What is the EPA annual leak rate trigger for industrial process refrigeration?

Accepted Answer

30%

Answer

Industrial process refrigeration must be repaired when the annual leak rate exceeds 30%.

Question 3

Before electronic leak detection, why should the area around suspected leaks be free of strong air currents?

Accepted Answer

Air currents disperse escaping refrigerant and cause false negatives

Answer

Drafts disperse the leaking vapor, making it harder for the detector to sense.

Question 4

A halide torch leak detector indicates a refrigerant leak by changing what?

Accepted Answer

Flame color to green

Answer

A halide torch flame turns green when it contacts chlorinated refrigerant.

Question 5

How often must comfort cooling appliances with leaks exceeding the trigger rate be checked under recordkeeping rules?

Accepted Answer

Documented and repaired within the required timeframe

Answer

Leaks must be documented and repaired within the EPA-required timeframe.

EPA 608 609 Practice Test