Final answer:
The best practice at flammable gas incidents where gas is burning is to monitor the fire and protect exposures with hose streams without extinguishing the flame or shutting off the gas supply, to avoid an uncontrolled explosion.
Step-by-step explanation:
When dealing with flammable gas incidents where the gas is burning, the recommended procedure is often to monitor the situation but not extinguish the burning flame. Attempting to extinguish the flame without controlling the gas source can create a more hazardous situation, such as a gas explosion or further fueling of the fire once the gas finds an ignition source again. The best practice is typically to monitor the fire, use hose streams to protect exposures if necessary to prevent the spread of the fire, and ensure that the pressurized gas supply is not shut off, as this could cause a buildup of unburned gas that could lead to an explosion when it eventually finds an ignition source.
At such incidents, citing relevant firefighting protocols, it's important to prioritize life safety and stabilize the incident by controlling utilities. Firefighters are also trained to rescue victims from burning buildings and administer first aid or CPR, ensuring their own safety by wearing protective gear, such as fire-resistant clothing and breathing apparatus. They assess the situation, communicate with their superiors, and follow the incident command system to effectively mitigate the emergency.