EPA 608 CORE - Using Charts

HCFC refrigerants contain which of the following?

• Helium, carbon, fluorine & chlorine

• Hydrogen, chlorine, ferrite & carbon

• Hydrogen, chlorine, fluorine & carbon

• Hydrogen, chlorine, fluorine & calcium

HFC refrigerants contain which of the following?

• Chlorine, fluorine & carbon

• Chlorine, fluorine & hydrogen

• Hydrogen, chlorine & carbon

• Hydrogen, fluorine & carbon

Which of the following is a requirement for all CFC, HCFC, and HFC refrigerant recovery devices?

• They must be portable

• They must contain a heavy-duty shield

• They must have a 20,000 btu/hr rating

• They must meet EPA standards

Why are HFO refrigerants less flammable than hydrocarbon refrigerants?

• They contain chlorine.

• They contain bromine.

• They contain fluorine.

• They contain carbon.

According to the ASHRAE refrigerant safety classification standard, which of the following designations would be the safest?

• A-1

• A-3

• B-1

• B-3

An example of a CFC refrigerant is:

• R-134a

• R-123

• R-22

• R-12

How do the global warming potentials of isobutane (R-600a), propane (R-290), and R-441A compare to the GWPs of HFC-134a, R-404A, and R-410A?

• They are significantly higher

• They are significantly lower

• They are approximately equal

• They are just slightly higher

How does the global warming potential of R-410A compare to carbon dioxide?

• It is lower.

• They are equal.

• It is hundreds of times greater.

• It is thousands of times greater.

What characteristic of HFC refrigerants make them damaging to the environment?

• They are toxic to plants and animals at low doses.

• They contain chlorine which damages the ozone layer.

• They have a high Ozone Depletion Potential (ODP).

• They can have very high global warming potentials.

Which of the following is a "high-pressure refrigerant" under EPA's section 608 regulations?

• R-410A

• R-113

• R-123

• R-11