What is the fire extinguisher requirement at the dispensing area for CNG?

The requirement for fire extinguishers in the dispensing area for compressed natural gas (CNG) specifically stipulates that they must have a minimum rating of 20-B:C. This rating indicates that the extinguisher is suitable for use on flammable liquid fires (the "B" class) and electrical fires (the "C" class).

In a CNG dispensing area, the presence of flammable gases and potential ignition sources makes accessible firefighting equipment essential for ensuring safety. The rating of 20-B:C provides a significant level of fire suppression capability, allowing personnel to quickly address any small fires that may occur during the dispensing process.

Ratings lower than 20-B:C may not provide enough capacity to adequately extinguish a fire in the unique environment of a CNG dispensing area, where risks can be more pronounced due to the properties of the gas. Higher ratings, while they may provide additional capacity, are not required by regulations or industry standards for this specific context, making 20-B:C the appropriate threshold.