EPA 608 Type II: High-Pressure Practice Questions
Type II: High-Pressure makes up 13 of every 50 questions on a Tigertest EPA 608 practice test. Here are 10 of the 52 questions on it, each with the answer and the reason.
Updated by the Tigertest team. Based on 40 CFR Part 82 Subpart F and the EPA Section 608 test outline. Each real section is 25 questions, 18 to pass.
1. For Section 608 purposes, a high-pressure refrigerant has an atmospheric boiling point between which two temperatures?
- A.-150 F and -58 F
- B.-58 F and 50 F
- C.50 F and 150 F
- D.-20 F and 20 F
Answer: B. High-pressure refrigerants such as R-22, R-134a, R-404A and R-410A boil between -58 F and 50 F at atmospheric pressure. EPA's regulatory definition in 40 CFR 82.152 uses a saturation pressure of 170 to 355 psia at 104 F.
2. Very-high-pressure refrigerants such as R-503 and R-13 have atmospheric boiling points below which temperature?
- A.-20 F
- B.32 F
- C.50 F
- D.-58 F
Answer: D. Very-high-pressure refrigerants (R-13, R-23, R-503) boil below -58 F at atmospheric pressure. They are used in ultra-low-temperature and cascade systems.
3. A technician is called to service a residential split-system heat pump charged with 9 lb of R-22. Which EPA certification is required?
- A.Type II or Universal
- B.Section 609 MVAC certification
- C.Type I only
- D.Type III or Universal
Answer: A. A split-system heat pump using R-22 is a high-pressure appliance that is not a small appliance, so Type II or Universal certification is required under 40 CFR 82.161.
4. A supermarket's commercial refrigeration rack holds 60 lb of R-22. What annual leak rate triggers the mandatory repair requirement?
- A.30%
- B.35%
- C.20%
- D.10%
Answer: C. Since January 1, 2019, commercial refrigeration appliances with 50 lb or more of ozone-depleting refrigerant must be repaired when the leak rate exceeds 20% (40 CFR 82.157(d)). The older threshold was 35%.
5. What leak rate threshold applies to industrial process refrigeration containing 50 lb or more of ozone-depleting refrigerant?
- A.20%
- B.15%
- C.30%
- D.10%
Answer: C. Industrial process refrigeration must be repaired when its leak rate exceeds 30% (40 CFR 82.157(d)).
6. An office building's 120-lb R-22 comfort cooling system is leaking at an annualized rate of 12%. What does the regulation require?
- A.Repair the leak within 30 days
- B.No action, because the threshold is 15%
- C.Repair it at the next annual shutdown
- D.Report it to EPA within 24 hours
Answer: A. Comfort cooling appliances with 50 lb or more must be repaired when leaks exceed 10% per year, and the repair is due within 30 days of discovery (40 CFR 82.157).
7. A technician adds 5 lb to a 100-lb comfort cooling unit, 73 days after the previous addition. What is the annualized leak rate?
- A.5%
- B.10%
- C.18%
- D.25%
Answer: D. Annualizing method: (5 / 100) x (365 / 73) x 100 = 25%, which exceeds the 10% comfort cooling threshold in 40 CFR 82.157.
8. Once a leak rate above the applicable threshold is discovered, how many days does the owner normally have to complete repairs?
- A.90 days
- B.30 days
- C.10 days
- D.60 days
Answer: B. Owners must repair leaks within 30 days of discovering that the leak rate exceeds the threshold, unless an extension applies (40 CFR 82.157(d)).
9. After repairing a leak on an appliance that exceeded its threshold, which tests confirm the repair was successful?
- A.A single 500-micron standing vacuum test
- B.Initial and follow-up verification tests
- C.An oil acid test and a moisture test
- D.A purity test performed by a reclaimer
Answer: B. 40 CFR 82.157(e) requires an initial verification test at the conclusion of the repair and a follow-up verification test after the appliance returns to normal operating conditions.
10. How long must owners of appliances with 50 lb or more keep their leak inspection and repair records?
- A.Ten years
- B.One year
- C.Five years
- D.Three years
Answer: D. All records required under 40 CFR 82.157, including service invoices, leak rate calculations and verification tests, must be kept for three years.
Practice all 52 type ii: high-pressure questions, and the rest of the 200-question bank, in the free EPA 608 training sets. Questions you miss come back until you have mastered them.
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