Flammable refrigerants are restricted by ________.

• A. The color of the cylinder
• B. Regulatory labeling only
• C. how much can be carried and to where it can be carried
• D. Brand and supplier

Answer: (C)

The main idea here is that safety rules for flammable refrigerants focus on how much you’re handling and where you’re handling or transporting it. Limiting the quantity reduces the potential energy release and the size of any dangerous vapor cloud if a leak occurs, while restricting where it can be carried or stored minimizes ignition sources and exposure in case of a release. So the controlling restrictions are about the amount you can transport and the allowed locations for carrying or storing it.

Labeling is important for warning and identification, but it doesn’t set the carrying or storage limits by itself. Brand and supplier don’t determine the regulatory restrictions either; the rules are about quantity and location.