Question 1

What type of gloves must technicians wear when handling liquid refrigerants to prevent injury?

Accepted Answer

Technicians must wear chemical-resistant gloves, such as those made from neoprene or similar materials, to prevent frostbite and chemical burns caused by rapid evaporation of liquid refrigerants.

Question 2

Why must technicians wear safety goggles rather than standard glasses when working with refrigerants?

Accepted Answer

Safety goggles provide a sealed barrier around the eyes, protecting against refrigerant splashes from all angles, whereas standard glasses leave the sides of the eyes exposed to potential chemical injury.

Question 3

When is a self-contained breathing apparatus (SCBA) required rather than a standard respirator during refrigerant work?

Accepted Answer

An SCBA is required when refrigerant concentrations may displace enough oxygen to create an oxygen-deficient atmosphere, typically in confined spaces or areas with major refrigerant leaks.

Question 4

What eye-flushing action should be taken immediately if liquid refrigerant splashes into a technician's eyes?

Accepted Answer

The eyes should be flushed continuously with large amounts of clean, cool water for at least 15 minutes, and the technician should then seek immediate medical attention.

Question 5

What is the maximum fill level, expressed as a percentage of water capacity, allowed for refrigerant cylinders?

Accepted Answer

Refrigerant cylinders must never be filled above 80% of their water capacity to allow for thermal expansion of the liquid refrigerant and prevent a hydrostatic pressure rupture.

EPA 608 HVAC Certification: Safety & Handling

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