CCCTC HVAC EPA Section 608 9th Edition Core (2019/2020)

25. Before shipping any used refrigerant cylinders, check that the cylinder meets what standards: A. Department of Transportation B. The Significant New Alternatives Policy (SNAP) C. Underwriters Laboratories D. All of the above

Correct answer is A Department of Transportation Before shipping any used refrigerant cylinders, check that the cylinder meets DOT standards. (Page 15 ESCO EPA 9th Edition prep manual)

13. HFCs ________ A. will not damage stratospheric ozone, but have a high GWP. B. will damage stratospheric ozone and have a low GWP C. will not deplete stratospheric ozone and have a low GWP D. are only harmful to ground level ozone

Correct answer is A will not damage stratospheric ozone HFC's such as (R‐134a) do not contain chlorine and have no Ozone Depletion Potential but have a high GWP. (Page 9 ESCO EPA 9th Edition prep manual)

15. The condenser _______________________________________ A. changes a high-pressure vapor to a high-pressure liquid B. changes a low-pressure vapor to a low-pressure liquid C. changes a high-pressure liquid to a low-pressure liquid D. changes a low-pressure liquid to a low-pressure vapor

Correct answer is A changes a high-pressure vapor to a high-pressure liquid The refrigerant enters the condenser as a high-temperature, high-pressure vapor. As the refrigerant expels heat, the refrigerant condenses to a high-pressure liquid. (Page 6 ESCO EPA 9th Edition prep manual)

18. What is the Significant New Alternatives Policy (SNAP) Program? A. EPA's program that identifies refrigerants with lower overall risks to human health and the environment. B. Covers only CFC and HCFC refrigerants used in residential air conditioning. C. Relates to CFC and HCFC refrigerants used in commercial air conditioning. D. Covers only CFC and HCFC refrigerants used in industrial process refrigeration.

Correct answer is A. EPA's program that identifies refrigerants with lower overall risks to human health and the environment. (Page 11 ESCO EPA 9th Edition prep manual)

14. Which ASHRAE classification means slightly flammable? A. A1 B. A2L C. A3 D. B1

Correct answer is B A2L ASHRAE has grouped refrigerants by Class A (safest) or B, depending on their toxicity level to humans. Flammability is indicated by a 1 (no flammability), 2 (low flammability), or 3 (high flammability). (Page 9 ESCO EPA 9th Edition prep manual)

5. HCFCs contain A. Chlorine ,Fluorine, and Carbon B. Hydrogen, Chlorine, Fluorine, and Carbon C. Hydrogen, Fluorine, and Carbon D. Hydrogen, Fluorine, and Olefin

Correct answer is B Hydrogen, Chlorine, Fluorine and Carbon HCFC compound contain Hydrogen, Chlorine, Fluorine, and carbon. (Page 12 ESCO EPA 9th Edition prep manual)

10. Which international agreement (Treaty) regulated the production and use of CFCs, HCFCs, halons, methyl chloroform and carbon tetrachloride? A. Kyoto Treaty B. Montreal Protocol C. Council of Nicaea D. Treaty of Ghent

Correct answer is B Montreal Protocol Following several years of negotiations, an international agreement (Treaty) regulating the production and use of CFCs, HCFC's, halons, methyl chloroform and carbon tetrachloride entered into force in mid-1989. Known as The Montreal Protocol, this landmark agreement initially required a production and consumption freeze. (Page 10 ESCO EPA 9th Edition prep manual)

21. A refrigerant cylinder designed to hold recovered refrigerant has a: A. yellow body and grey top. B. grey body and yellow top. C. green body and yellow top. D. orange body and grey top.

Correct answer is B grey body and yellow top Approved refrigerant recovery cylinders can easily be identified by their colors' yellow tops and grey bodies. (Page 14 ESCO EPA 9th Edition prep manual)

23. The low-side test-pressure data-plate value should be used by a technician to determine a safe pressure for: A. recovering refrigerant. B. leak testing. C. refrigerant charging. D. retrofitting a system.

Correct answer is B leak testing To determine the safe pressure for leak testing, check the equipment data plate for the maximum low-side test-pressure value. (Page 15 ESCO EPA 9th Edition prep manual)

4. The chlorine in CFCs and HCFCs A. will dissolve in water. B. will not dissolve in water. C. will rain out of the atmosphere. D. is heavier than air and cannot rise to the stratosphere.

Correct answer is B not dissolve in water Chlorine compounds will not dissolve in water, or rain out of the atmosphere. . (Page 12 ESCO EPA 9th Edition prep manual)

12. To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis defines A. Recovery B. Reclaiming C. Reuse D. Recycle

Correct answer is B. Reclaiming Based on EPA's clean act, RECLAIM is to process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis. RECLAIMED refrigerant must meet the standard set forth in ARI 700 before it can be resold. (Page 10 ESCO EPA 9th Edition prep manual)

16. The compressor ____________________________________ A. changes a high-pressure vapor to a high-pressure liquid B. changes a low-pressure vapor to a high-pressure vapor C. changes a high-pressure liquid to a low-pressure liquid D. changes a low-pressure liquid to a low-pressure vapor

Correct answer is B. changes a low-pressure vapor to a high-pressure vapor Refrigerant enters the compressor as a low-pressure vapor and compressed to a high- pressure superheated vapor. (Page 6 ESCO EPA 9th Edition prep manual)

22. Reusable refrigerant containers under high-pressure must be hydrostatically tested how often? A. 1 year B. 3 years C. 5 years D. 7 years

Correct answer is C 5 years Refillable cylinders must be hydrostatically tested and date stamped every 5 years. (Page 14 ESCO EPA 9th Edition prep manual)

9. Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for A. Recovery cylinders B. One pound cans C. Disposable cylinders D. Accumulator cylinders

Correct answer is C Disposable cylinders It is a violation of Section 608 of the Federal Clean Air Act.to: Dispose of a disposable cylinder without first recovering any remaining refrigerant (to 0 psig.) and then rendering the cylinder useless, then recycling the metal. (Page 14 ESCO EPA 9th Edition prep manual)

24. Silicone elastomers, for use in seals and gaskets, are not compatible with which refrigerants? A. HCFCs B. CFCs C. HFOs D. HFCS

Correct answer is C HFOs Silicone elastomers, for use in seals and gaskets, are not compatible with HFO refrigerants. (Page 15 ESCO EPA 9th Edition prep manual)

2. Crop loss, eye disease, and skin cancer have been attributed to A. Depletion of Stratospheric nitrogen B. Depletion of Stratospheric chlorine monoxide C. Depletion of Stratospheric ozone D. Depletion of Stratospheric oxygen

Correct answer is C. Depletion of Stratospheric Ozone Depletion of stratosphere ozone will cause crop loss, increase eye diseases, skin cancer, reduce marine life, and deforestation. . (Page 8 ESCO EPA 9th Edition prep manual)

19. Which type of refrigerant contains no chlorine? A. HCFCs B. HCFC Blends C. HFCs D. CFCs

Correct answer is C. HFC's HFC's (R‐134a) do not contain chlorine and have no Ozone Depletion Potential. (Page 9 ESCO EPA 9th Edition prep manual)

17. An ozone molecule contains A. One oxygen atom B. Two oxygen atoms C. Three oxygen atoms D Four oxygen atoms

Correct answer is C. Three oxygen atoms An Ozone molecule consists of three oxygen atoms (03). Ozone protects us from harmful ultraviolet radiation and helps maintain stable Earth temperatures. (Page 8 ESCO EPA 9th Edition prep manual)

8. How much can a person be fined per day per violation for knowingly releasing a regulated substance that violates the Clean Air Act? A. $10,000 B. $25,000 C. $37,000 D. $44,539

Correct answer is D $44,539 It is a violation of Section 608 of the Federal Clean Air Act to: Vent HFC's since July 1, 1992. (Page 9 ESCO EPA 9th Edition prep manual)

3. A single chlorine atom can destroy how many ozone molecules? A. 100 B. 1,000 C. 10,000 D. 100,000

Correct answer is D 100,000 One atom of chlorine will destroy 100,000 molecules of ozone. (Page 12 ESCO EPA 9th Edition prep manual)

6. Which of the following has the highest Ozone Depletion Potential? A. HFOs B. HCFCs C. HFCs D. CFC's

Correct answer is D CFC's Based on EPA CFCs have the highest ozone depletion potential to destroy the ozone. (Page 12 ESCO EPA 9th Edition prep manual)

7. Which of the following refrigerants is an HFO? A. R-22 B. R-134a C. R-410A D. R-1234ze

Correct answer is D R-1234ze. A medium pressure range A2L refrigerant used in new heat pumps, vending machines and chillers.) (Page 16 ESCO EPA 9th Edition prep manual)

11. Clean refrigerant for reuse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers, is the definition of A. Recover B. Reclaim C. Reuse D. Recycle

Correct answer is D Recycle Based on EPA's clean act, RECYCLE is to clean refrigerant for reuse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers. (Page 10 ESCO EPA 9th Edition prep manual)

1. The molecule found in CFCs and HCFCs that depletes ozone is: A. Fluorine B. Hydrogen C. Carbon D. Chlorine

Correct answer is D. Chlorine Chlorine is the element that depletes the ozone by attaching itself to one atom of oxygen from an ozone molecule. The oxygen molecule becomes O2 and chlorine monoxide. (Page 8 ESCO EPA 9th Edition prep manual)

20. Which of the following refrigerant has a GWP of "1"? A. R-22 B. R-134a C. R-410A D. R-1233zd

Correct answer is D. R-1233zd R-1233zd is an HFO and does not contain chlorine. (Page 9 & 16 ESCO EPA 9th Edition prep manual)