At an incident involving a gas distribution system, if the gas is burning, what should be done with the flame?

• A. The flame should be extinguished.
• B. The flame should not be extinguished.
• C. Ventilate and then extinguish.
• D. Apply foam directly to the flame.

Answer: (B)

Gas distribution fires are fueled by the line itself, so trying to extinguish the flame doesn’t stop the leak and can trap or spread gas in the area, raising the risk of a larger ignition or explosion. The safest action is to control the source by shutting off the gas supply at the main valve if it can be done safely, then ventilate and coordinate with the gas utility. Extinguishing the flame directly offers no long-term control of the hazard and can worsen the situation.