Leak Detection and Repair Procedures Flashcards
7 cards from real EPA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Leak Detection and Repair Procedures flashcards as text
Under the current EPA leak repair rules, what is the leak rate threshold for comfort cooling appliances with 50 or more pounds of ozone-depleting refrigerant?
Answer: 10%
Comfort cooling appliances must be repaired when the leak rate exceeds 10% per year.
What is the leak rate threshold for commercial refrigeration appliances holding 50 or more pounds of ozone-depleting refrigerant?
Answer: 20%
Commercial refrigeration appliances trigger repair requirements above a 20% annual leak rate.
What is the leak rate threshold for industrial process refrigeration appliances with 50 or more pounds of ozone-depleting refrigerant?
Answer: 30%
Industrial process refrigeration has the highest repair threshold at 30% per year.
Once an appliance exceeds its applicable leak rate threshold, how long does the owner generally have to repair the leaks?
Answer: 30 days
Leaks must generally be repaired within 30 days of discovering the threshold was exceeded.
A 100-pound commercial refrigeration system required 10 pounds of refrigerant 73 days after its last charge. Using the annualizing method, what is the leak rate?
Answer: 50%
(10 ÷ 100) × (365 ÷ 73) × 100 = 0.10 × 5 × 100 = 50%.
When is an initial verification test performed on a repaired appliance?
Answer: At the conclusion of the repair, before additional refrigerant is added back
The initial verification test confirms the repair held before the system is recharged.
Within what period after an appliance returns to normal operating characteristics must a follow-up verification test be done?
Answer: 10 days
The follow-up verification test must be completed within 10 days of the system returning to normal operating conditions.