When must an LP-gas fire be extinguished?

The most appropriate response in the context of extinguishing an LP-gas fire is centered around the critical importance of safety and control of the fuel source. Shutting off and stopping the propane source immediately is vital because continuing to allow gas to flow could lead to further fire spread or an explosion, particularly if the fire is not contained. This action must take precedence as it directly addresses the root cause of the fire.

By cutting off the propane supply, the intensity of the fire can be reduced significantly, minimizing danger to responders and aiding in containment efforts. It's crucial to understand that extinguishing the fire effectively hinges on the management of the fuel source; without doing so, any attempts to extinguish the fire could be rendered ineffective or even escalate the danger.

The approach of waiting until it is safe or notifying emergency services, while essential parts of a broader safety protocol, do not address the immediate fire control required when dealing with LP-gas incidents. This underscores the priority of eliminating the source of the fuel as an initial step in fire management.