EPA 608 Core Safety Quiz

What should be worn when connecting/disconnecting hoses during refrigerant recovery?

• Safety eyewear and butyl-lined gloves

• Hard hat and steel-toed boots

• Lab coat and sandals

• No protective gear is necessary

What should be done if a large refrigerant leak occurs in an enclosed area and no self-contained breathing apparatus is available?

• Stay in the area and wait for help

• Use a fire extinguisher to control the leak

• Vacate and naturally ventilate the area

• Cover the leak with a cloth

What can CFC and HCFC refrigerants decompose into at high temperatures?

• Oxygen and nitrogen

• Carbon dioxide and water

• Phosgene gas, hydrochloric acid, and/or hydrofluoric acid

• Methane and sulfur dioxide

What should be equipped with a regulator when using nitrogen to service, leak test, or purge a refrigeration system?

• Refrigerant recovery machine

• Nitrogen tank

• Vacuum pump

• Pressure gauge

What should be permanently marked on or near any evaporators, exposed refrigerant tubing, the machine compartment, and exterior of a household appliance charged with HC refrigerants?

• Safety instructions

• Serial number

• Manufacturer's logo

• Safety markings

What is the purpose of using nitrogen to pressurize or blow debris out of a refrigeration system?

• To cool down the system

• To increase the pressure inside the system

• To remove moisture from the system

• To displace the refrigerant

What can happen if a very large refrigerant leak occurs in an enclosed area?

• The refrigerant will evaporate quickly

• The area will become extremely cold

• The refrigerant will turn into a solid

• Suffocation due to displacement of oxygen

What should be done if a refrigerant leak is detected during a leak test?

• Ignore the leak and continue the test

• Evacuate the area immediately

• Increase the pressure in the system

• Add more refrigerant to the system

What is the weight of refrigerants compared to air?

• Refrigerants are lighter than air

• Refrigerants have the same weight as air

• Refrigerants are heavier than air

• Refrigerants have no weight

What should be done if a refrigerant leak is detected in a filled cylinder in an enclosed area and no self-contained breathing apparatus is available?

• Cover the cylinder with a cloth

• Use a fire extinguisher to control the leak

• Stay in the area and wait for help

• Vacate and naturally ventilate the area