A2L Final Assessment Script Questions with Correct Answers
(Grade A+)
Question 1: Refillable cylinders (recovery tanks) should not be filled beyond _____ of their maximum
capacity
Answer: 80%
Question 2: A2L refrigerant cylinders are allowed to be shipped ________, fitting into standard storage
racks
Answer: Horizontally
Question 3: When transporting refrigerant cylinders, industry best practice is to ensure that the relief
valve is at the ________
Answer: 12 o'clock postion
Question 4: When transporting flammable refrigerants, DOT requires that the vehicle be equipped
with which type of fire extinguisher?
Answer: Class B Dry Powder
Question 5: DOT prohibits smoking within ________ of flammable gases
Answer: 25 feet
Question 6: When transporting flammable refrigerants, carrying the ________ for each refrigerant is
also recommended
Answer: Safety Data Sheets (SDS)
Question 7: When working with flammable refrigerants, only __________ should be used
Answer: Spark Free Tools
Question 8: Equipment with flammable refrigerant requires a red colored marking on all process tubes
and service connections. The color marking must extend _______ in both directions from service
locations
Answer: One inch
Page 1
, Question 9: Flammable refrigerant tanks are marked with a ________, and a DOT flammable gas
placard or decal
Answer: Red Stripe
Question 10: Minimizing or reducing the possibility of an ignition event or accident
Answer: Mitigation
Question 11: Depending on installation, some systems that are charged with a flammable refrigerant
may require an __________ as a mitigation step
Answer: indoor fan
Question 12: An ___________ behaves like a single compound refrigerant
Answer: Azeotropic refrigerant blend
Question 13: A ____________ is a mixture of 2 or more refrigerants that can separate, or fractionate,
into its original components
Answer: Zeotropic refrigerant blend
Question 14: An __________ designation is used when refrigerant blends are composed of the same
refrigerants, but with different percentages of each
Answer: Uppercase letter (A,B,C)
Question 15: _____________ are highly flammable and require additional technician training for safe
use
Answer: Hydrocarbon refrigerants
Question 16: _______________ of a refrigerant is the minimum concentration of a refrigerant that can
propagate a flame through a consistent mixture of the refrigerant and air under specified test
conditions
Answer: Lower Flammability Limit (LFL)
Question 17: Certain refrigerants, such as R-290 and R-600a are exempt from the _________
Answer: EPA's Recovery Mandate
Page 2
(Grade A+)
Question 1: Refillable cylinders (recovery tanks) should not be filled beyond _____ of their maximum
capacity
Answer: 80%
Question 2: A2L refrigerant cylinders are allowed to be shipped ________, fitting into standard storage
racks
Answer: Horizontally
Question 3: When transporting refrigerant cylinders, industry best practice is to ensure that the relief
valve is at the ________
Answer: 12 o'clock postion
Question 4: When transporting flammable refrigerants, DOT requires that the vehicle be equipped
with which type of fire extinguisher?
Answer: Class B Dry Powder
Question 5: DOT prohibits smoking within ________ of flammable gases
Answer: 25 feet
Question 6: When transporting flammable refrigerants, carrying the ________ for each refrigerant is
also recommended
Answer: Safety Data Sheets (SDS)
Question 7: When working with flammable refrigerants, only __________ should be used
Answer: Spark Free Tools
Question 8: Equipment with flammable refrigerant requires a red colored marking on all process tubes
and service connections. The color marking must extend _______ in both directions from service
locations
Answer: One inch
Page 1
, Question 9: Flammable refrigerant tanks are marked with a ________, and a DOT flammable gas
placard or decal
Answer: Red Stripe
Question 10: Minimizing or reducing the possibility of an ignition event or accident
Answer: Mitigation
Question 11: Depending on installation, some systems that are charged with a flammable refrigerant
may require an __________ as a mitigation step
Answer: indoor fan
Question 12: An ___________ behaves like a single compound refrigerant
Answer: Azeotropic refrigerant blend
Question 13: A ____________ is a mixture of 2 or more refrigerants that can separate, or fractionate,
into its original components
Answer: Zeotropic refrigerant blend
Question 14: An __________ designation is used when refrigerant blends are composed of the same
refrigerants, but with different percentages of each
Answer: Uppercase letter (A,B,C)
Question 15: _____________ are highly flammable and require additional technician training for safe
use
Answer: Hydrocarbon refrigerants
Question 16: _______________ of a refrigerant is the minimum concentration of a refrigerant that can
propagate a flame through a consistent mixture of the refrigerant and air under specified test
conditions
Answer: Lower Flammability Limit (LFL)
Question 17: Certain refrigerants, such as R-290 and R-600a are exempt from the _________
Answer: EPA's Recovery Mandate
Page 2
