Refrigerant Cylinder Safety and Storage Flashcards

Under DOT regulations, in what position must refrigerant cylinders be transported?

Answer: Upright with valve end up

DOT requires refrigerant cylinders to be transported upright with the valve end up to prevent liquid refrigerant from contacting the valve assembly.

What is the maximum temperature at which refrigerant cylinders should be stored?

Answer: 125°F

Refrigerant cylinders must not be stored in areas exceeding 125°F (51.7°C) because heat increases internal pressure and risks rupture.

Which federal agency regulates the transportation of refrigerant cylinders on public roads?

Answer: DOT

The Department of Transportation (DOT) regulates the packaging, labeling, and transport of hazardous materials including refrigerant cylinders.

What must be done to a refrigerant cylinder before returning it to a supplier?

Answer: Close the valve and install the protective cap

Before returning cylinders, technicians must close the valve and install the valve protection cap to prevent damage during handling and transport.

What is the primary function of a fusible plug on a refrigerant cylinder?

Answer: Release pressure if temperature becomes dangerously high

Fusible plugs are designed to melt at elevated temperatures, venting the cylinder before pressure can build to the point of rupture.

Why must refrigerant cylinders never be stored near heat sources, open flames, or welding equipment?

Answer: Heat causes pressure buildup that can rupture the cylinder

Elevated temperatures increase internal cylinder pressure, and if relief devices fail, the cylinder can rupture or explode.