EPA Section 608-Module 0119 Technician
Certification ACTUAL QUESTIONS AND
CORRECT ANSWERS
The over-evacuation of a system: - CORRECT ANSWERS✅✅does not occur
According to the ASHARE refrigerant safety classification standard, which of the following
designations would be the safest? - CORRECT ANSWERS✅✅A1
What does ozone in the stratosphere above the earth consists of? - CORRECT
ANSWERS✅✅molecules containing 3 oxygen atoms
How many ozone molecules can each chlorine atom in the stratosphere destroy? - CORRECT
ANSWERS✅✅100,000 molecules
Approved refrigerant recovery cylinders can be identified by which color code? - CORRECT
ANSWERS✅✅Grey Tops and Yellow Bodies
Which type of refrigerant has the highest ozone depletion potential (ODP?) - CORRECT
ANSWERS✅✅CFCs
Which type if lubricants are HFO refrigerants miscible in? - CORRECT
ANSWERS✅✅POE lubricants
Which refrigerant does not contain chlorine? - CORRECT ANSWERS✅✅R-134a
When transporting cylinders containing used refrigerant, DOT requires that you: -
CORRECT ANSWERS✅✅Attach DOT classification tags
What is one of the most serious results of damage to the stratospheric ozone layer? -
CORRECT ANSWERS✅✅increased rates of skin cancer in humans
, What evidence demonstrates that chlorine in the stratosphere is primarily from man-made
chemicals rather than from natural sources such as volcanoes? - CORRECT
ANSWERS✅✅Samples of air taken from the stratosphere over erupting volcanoes show
that volcanoes contribute a small quantity of chlorine to the stratosphere compared to CFC's
and HCFC's
What is being done in the U.S. to stop damage to the stratospheric ozone layer? - CORRECT
ANSWERS✅✅Phasing out the use of chlorofluorocarbons and hydrochlorofluorocarbons
How should disposable cylinders of CFCs, HCFCs, and HFCs be discarded? - CORRECT
ANSWERS✅✅Recover all remaining refrigerant, render the cylinders useless, and recycle
the metal.
In addition to fines and being required to appear in court, what penalty can be imposed on
service technicians who violate Clean Air Act provisions? - CORRECT
ANSWERS✅✅They may lose their certification
From which of the following does the ozone layer protect the earth? - CORRECT
ANSWERS✅✅ultraviolet radiation from the sun
Which refrigerant(s) must be recovered before opening or disposing of appliances? -
CORRECT ANSWERS✅✅All three listed (HFC's, CFC's, HCFC's)
Under EPA's regulations, what standards must reclaimed refrigerant meet before it can be
resold? - CORRECT ANSWERS✅✅AHRI 700
Which type of refrigerant typically has the lowest global warming potential? - CORRECT
ANSWERS✅✅HFOs
What is the term used to describe the fact that a refrigerant blend has a range of bubble or
dew points at a constant pressure? - CORRECT ANSWERS✅✅Temperature glide
Which of the following is an approved "drop-in" service replacement for R-22? - CORRECT
ANSWERS✅✅There is no direct drop-in refrigerant substitutes
Certification ACTUAL QUESTIONS AND
CORRECT ANSWERS
The over-evacuation of a system: - CORRECT ANSWERS✅✅does not occur
According to the ASHARE refrigerant safety classification standard, which of the following
designations would be the safest? - CORRECT ANSWERS✅✅A1
What does ozone in the stratosphere above the earth consists of? - CORRECT
ANSWERS✅✅molecules containing 3 oxygen atoms
How many ozone molecules can each chlorine atom in the stratosphere destroy? - CORRECT
ANSWERS✅✅100,000 molecules
Approved refrigerant recovery cylinders can be identified by which color code? - CORRECT
ANSWERS✅✅Grey Tops and Yellow Bodies
Which type of refrigerant has the highest ozone depletion potential (ODP?) - CORRECT
ANSWERS✅✅CFCs
Which type if lubricants are HFO refrigerants miscible in? - CORRECT
ANSWERS✅✅POE lubricants
Which refrigerant does not contain chlorine? - CORRECT ANSWERS✅✅R-134a
When transporting cylinders containing used refrigerant, DOT requires that you: -
CORRECT ANSWERS✅✅Attach DOT classification tags
What is one of the most serious results of damage to the stratospheric ozone layer? -
CORRECT ANSWERS✅✅increased rates of skin cancer in humans
, What evidence demonstrates that chlorine in the stratosphere is primarily from man-made
chemicals rather than from natural sources such as volcanoes? - CORRECT
ANSWERS✅✅Samples of air taken from the stratosphere over erupting volcanoes show
that volcanoes contribute a small quantity of chlorine to the stratosphere compared to CFC's
and HCFC's
What is being done in the U.S. to stop damage to the stratospheric ozone layer? - CORRECT
ANSWERS✅✅Phasing out the use of chlorofluorocarbons and hydrochlorofluorocarbons
How should disposable cylinders of CFCs, HCFCs, and HFCs be discarded? - CORRECT
ANSWERS✅✅Recover all remaining refrigerant, render the cylinders useless, and recycle
the metal.
In addition to fines and being required to appear in court, what penalty can be imposed on
service technicians who violate Clean Air Act provisions? - CORRECT
ANSWERS✅✅They may lose their certification
From which of the following does the ozone layer protect the earth? - CORRECT
ANSWERS✅✅ultraviolet radiation from the sun
Which refrigerant(s) must be recovered before opening or disposing of appliances? -
CORRECT ANSWERS✅✅All three listed (HFC's, CFC's, HCFC's)
Under EPA's regulations, what standards must reclaimed refrigerant meet before it can be
resold? - CORRECT ANSWERS✅✅AHRI 700
Which type of refrigerant typically has the lowest global warming potential? - CORRECT
ANSWERS✅✅HFOs
What is the term used to describe the fact that a refrigerant blend has a range of bubble or
dew points at a constant pressure? - CORRECT ANSWERS✅✅Temperature glide
Which of the following is an approved "drop-in" service replacement for R-22? - CORRECT
ANSWERS✅✅There is no direct drop-in refrigerant substitutes
