What is the easiest way to extinguish a fire caused by a leak?

The most effective response to a fire caused by a leak is to close the shutoff valve. This action addresses the root cause of the fire by stopping the flow of the combustible material or gas that is feeding the flames. When the leak is halted, the fire loses its fuel source, which is essential for combustion to continue.

While using a fire extinguisher is a common method for extinguishing various types of fires, it may not be effective if the fuel source is still present. Additionally, calling emergency services is crucial in many situations, but immediate action to eliminate the source of the fire can prevent it from escalating. Creating a barrier might offer some level of protection or containment, but it does not directly address the underlying issue of the leak itself.