Refrigerant Safety #3

To prevent an injury when workin with refrigerants, what safety precautions are necessary?

• Always have a fire extinguisher nearby

• Always have a phosgene sensor near the equipment being serviced

• Always use safety glasses and gloves

• Always use ear protection

What two types of injuries can CFC, HCFC, and HFC refrigerants cause?

• Lung Cancer and Heart Attacks

• Heart Attacks and Frost Bite Burns

• Carbon Monoxide Poisoning and Frost Bite Burns

• Frost Bite Burns and Suffocation

Which of the following may cause suffocation?

• Using a torch on a refrigeration system under pressure

• Venting refrigerant in a confined space

• Using a vacuum pump in a confined space

• Using a torch while in an enclosed walk in cooler

Which one of the following statements is true?

• A system should be evacuate while under pressure

• It is safe to heat a refrigerant cylinder above 125 degrees F

• Refrigerant is lighter than air

• Air is lighter than refrigerant

What is required in equipment rooms that use systems containing large quantities of refrigerant?

• phosgene and refrigerant alarms and sensors

• refrigerant and carbon monoxide alarms and sensors

• carbon monoxide and oxygen alarms and sensors

• oxygen and refrigerant alarms and sensors

When halogens are in contact with an open flame

• an explosion will occur

• phosgene gas is produced

• it is noticeable from a green color

• it is noticeable from a purple

What care must be taken when working around toxic fumes?

• open a window if possible for venthilation

• hold you breath as long as possible

• a breathing apparatus must be used

• no extra care must be taken

What must always be available when working with large amounts of refrigerants in equipment rooms?

• a self contained breathing apparatus

• fire extinguisher

• carbon monoxide detecor

• smoke detector

When leak testing systems using nitrogen, the technician should

• not mix refrigerant with the nitrogen

• leak test through the high side only

• always use a pressure regulator and safety relief valve at the nitrogen tank

• leak test through the low side only

When using nitrogen in a system for leak detection, a technician

• must use two separate gauges when connecting the nitrogen and a trace refrigerant to the system at the same time

• should add mostly refrigerant when testing a system for leaks

• does not have to use a pressure regulator on the nitrogen tank

• must never connect nitrogen and refrigerant to the system at the same time