What minimum rating is required for portable fire extinguishers in CNG dispensing areas?

The minimum rating required for portable fire extinguishers in CNG dispensing areas is 20-B:C. This rating signifies that the fire extinguisher is capable of fighting fires caused by flammable liquids, which are a key risk in CNG operations, and also effectively combat electrical fires.

The "B" classification indicates the extinguisher's effectiveness against flammable liquids, while the "C" classification signifies its suitability for use on energized electrical equipment without the risk of conducting electricity. A rating of 20-B:C indicates this extinguisher can handle larger fires compared to those with lower ratings, providing an essential level of safety in environments where compressed natural gas is handled and dispensed. This ensures adequate preparation for potential emergencies in CNG dispensing areas, making the 20-B:C rating an important standard for compliance and safety.