Measures to take in case of a combustible gas fire

I’ll only share the steps to take in case of a gas fire, for reference only. Handling a gas fire: Reason: Gas contains flammable gases such as carbon monoxide, hydrogen, and methane. If there are leaks in the pipes of gas equipment, gas will leak out due to internal pressure; when it comes into contact with high temperatures or an open flame, it can catch fire and trigger a blaze. Handling: 1) In the event of a fire in a gas pipeline with a diameter of 100 millimeters or less, the gate valve can be closed directly to extinguish the fire. 2) When a gas pipeline with a diameter of 150 millimeters or more catches fire, the gas pressure should be gradually reduced, and a large amount of steam or nitrogen should be introduced to extinguish the fire; however, the gas pressure must not fall below 500 Pa. At the same time, it is strictly prohibited to suddenly close the gas valve or the water seal completely, in order to prevent backfire explosions. 3) Do not suddenly cool the power equipment with water when it is red-hot. 4) The gas gate valves, pressure gauges, as well as the steam, gas pipes and fittings should all be assigned uniform numbers, with a designated person in charge of them. 5) After extinguishing the fire, cut off the gas supply using a water seal or gate, and inspect the area where the fire occurred. If the flange is on fire, replace the gasket; if there is a crack that is on fire, repair it by inserting plugs or welding. 6) When tar catches fire in the gas pipeline, all ventilation openings such as manhole covers can be sealed to suffocate the fire, or a large amount of steam can be introduced to extinguish it naturally. 7) When a gas leak is detected, even if there is no fire, it should be addressed immediately. 8) When extinguishing a fire, emergency responders must wear oxygen respirators and stand upwind to prevent poisoning as well as to avoid the oxygen cylinders in the respirators from exploding due to high temperatures.