EPA SECTION 609 EXAM AND PRACTICE EXAM NEWEST
ACTUAL EXAM COMPLETE 164QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
1. What is the estimated lifespan of chlorofluorocarbons (CFCs) in the
atmosphere?
1 to 5 years
50 to 100 years
200 to 300 years
10 to 20 years
2. If a technician finds a used refrigerant cylinder that is not properly labeled,
what steps should they take to ensure compliance with EPA regulations
before recycling?
They should properly label the cylinder and ensure it is empty
before recycling.
They should store it indefinitely until labeled.
They can recycle it without any further action.
They should dispose of it in a landfill.
3. Why is it prohibited to mix refrigerants in recovery cylinders?
Mixing refrigerants is a common practice in the industry.
Mixing refrigerants can lead to safety hazards and environmental
issues.
Mixing refrigerants is allowed if they are of the same type.
Mixing refrigerants improves recovery efficiency.
,4. What is the acceptable concentration limit for HFC-152a in MVAC systems in
the passenger cabin for more than 15 seconds?
2,000 ppm
500 ppm
1,000 ppm
1,500 ppm
5. What is the primary atmospheric layer where CFCs are known to be highly
reactive?
Stratosphere
Mesosphere
Troposphere
Thermosphere
6. If a technician finds that the moisture content in recycled R-134a is 0.002
percent by weight, what action should they take before using it in a mobile
air-conditioning system?
The technician should remove the moisture to meet the maximum
allowable limit.
The technician can use it as is since it is close to the limit.
The technician should ignore the moisture content and proceed with
use.
The technician should add more refrigerant to dilute the moisture.
7. What is the Ozone Depletion Potential (ODP) value assigned to HFC-134a
refrigerant?
, 1
0
0.1
0.5
8. What is the requirement for a technician trained in CFC-12 regarding handling
HFC-134a?
Training is not necessary.
Re-certification is required.
No re-certification is needed.
Only a written test is needed.
9. What regulation made it illegal to vent substitutes for CFC and HCFC
refrigerants?
The Clean Air Act
OSHA Regulations
Montreal Protocol
EPA Section 609
10. The Clean Air Act (CAA) was established to implement the provisions of the:
United Nations (UN) refrigerant phase-out plan.
Environmental Protection Agency (EPA)
Geneva Conference on the environment
Montreal Protocol.
, 11. If a technician is found venting substitutes for CFC and HCFC refrigerants,
what legal consequences might they face under the Clean Air Act?
They could face fines and loss of certification.
They would not face any consequences.
They would receive a warning only.
They could be required to attend additional training without penalties.
12. What layer of the atmosphere contains the majority of the Earth's ozone?
Thermosphere
Troposphere
Stratosphere
Mesosphere
13. What does air and other non-condensable gases cause in a refrigeration
system?
The compressor will run continuously
Frosting of suction lines
It air locks the circulating pump
Poor heat transfer
High discharge pressures
14. What does a rise in system pressure after achieving the required recovery
vacuum typically signify?
The recovery vacuum is too low.
The refrigerant is fully recovered.
ACTUAL EXAM COMPLETE 164QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS)
1. What is the estimated lifespan of chlorofluorocarbons (CFCs) in the
atmosphere?
1 to 5 years
50 to 100 years
200 to 300 years
10 to 20 years
2. If a technician finds a used refrigerant cylinder that is not properly labeled,
what steps should they take to ensure compliance with EPA regulations
before recycling?
They should properly label the cylinder and ensure it is empty
before recycling.
They should store it indefinitely until labeled.
They can recycle it without any further action.
They should dispose of it in a landfill.
3. Why is it prohibited to mix refrigerants in recovery cylinders?
Mixing refrigerants is a common practice in the industry.
Mixing refrigerants can lead to safety hazards and environmental
issues.
Mixing refrigerants is allowed if they are of the same type.
Mixing refrigerants improves recovery efficiency.
,4. What is the acceptable concentration limit for HFC-152a in MVAC systems in
the passenger cabin for more than 15 seconds?
2,000 ppm
500 ppm
1,000 ppm
1,500 ppm
5. What is the primary atmospheric layer where CFCs are known to be highly
reactive?
Stratosphere
Mesosphere
Troposphere
Thermosphere
6. If a technician finds that the moisture content in recycled R-134a is 0.002
percent by weight, what action should they take before using it in a mobile
air-conditioning system?
The technician should remove the moisture to meet the maximum
allowable limit.
The technician can use it as is since it is close to the limit.
The technician should ignore the moisture content and proceed with
use.
The technician should add more refrigerant to dilute the moisture.
7. What is the Ozone Depletion Potential (ODP) value assigned to HFC-134a
refrigerant?
, 1
0
0.1
0.5
8. What is the requirement for a technician trained in CFC-12 regarding handling
HFC-134a?
Training is not necessary.
Re-certification is required.
No re-certification is needed.
Only a written test is needed.
9. What regulation made it illegal to vent substitutes for CFC and HCFC
refrigerants?
The Clean Air Act
OSHA Regulations
Montreal Protocol
EPA Section 609
10. The Clean Air Act (CAA) was established to implement the provisions of the:
United Nations (UN) refrigerant phase-out plan.
Environmental Protection Agency (EPA)
Geneva Conference on the environment
Montreal Protocol.
, 11. If a technician is found venting substitutes for CFC and HCFC refrigerants,
what legal consequences might they face under the Clean Air Act?
They could face fines and loss of certification.
They would not face any consequences.
They would receive a warning only.
They could be required to attend additional training without penalties.
12. What layer of the atmosphere contains the majority of the Earth's ozone?
Thermosphere
Troposphere
Stratosphere
Mesosphere
13. What does air and other non-condensable gases cause in a refrigeration
system?
The compressor will run continuously
Frosting of suction lines
It air locks the circulating pump
Poor heat transfer
High discharge pressures
14. What does a rise in system pressure after achieving the required recovery
vacuum typically signify?
The recovery vacuum is too low.
The refrigerant is fully recovered.
