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Liquefied gas cylinder fire treatment matters

　　It can be said that "the liquefied gas cylinder fires after extinguishing, then close the valve" is a false rumor. Our real practice should be to close the valve and then extinguish the fire after the liquefied gas cylinder fires.
　　Extinguish the fire first and then close the valve. There is a safety hazard in this operation. Because after the flame is extinguished, the valve is not tightly closed, and the gas may leak and accumulate in the air, and there may be an explosion! When the valve of the liquefied gas cylinder is intact, the first choice is to close the valve.
　　Then, let's explain to you in detail that once the liquefied gas cylinder is on fire, you can take different disposal measures according to the site situation:
　　The first case where the liquefied gas is on fire is better. Although the liquefied gas tank is already on fire, when the valve of the liquefied gas cylinder is intact, we immediately close the valve as soon as the valve is turned off and it will be automatically extinguished. The "circulating the fire first, then closing the valve, otherwise it will cause an explosion" that is circulating on the Internet will not happen when the liquefied gas cylinder is on fire. Tempering refers to the phenomenon that if the gas pipeline is on fire, if the valve is quickly closed, the pressure in the pipeline will quickly drop, and the pressure outside the pipeline will be higher than the pressure inside, which will cause the fire to press into the pipeline. The liquefied gas cylinder bottle body and bottle mouth are relatively small, relatively speaking, the pressure is relatively small, so there will be no pressure difference, and the pressure inside the liquefied gas cylinder is greater than the outside, and the tempering phenomenon generally does not occur.
　　In fact, professional firefighters will first slowly close the pipeline valve to the minimum state when disposing of the gas pipeline on fire. After reducing the flame to the minimum, then close the valve to extinguish the fire. This approach is to prevent the occurrence of a flashback event.
　　The second method is that if the valve of the liquefied gas cylinder on fire is damaged, you don’t need to put out the fire first. You can carry the liquefied gas tank and stand it in an open area. Then cool the bottle with water and wait for the liquefied gas to burn; If the burned liquefied gas cylinder cannot be transferred in the residents' homes, it is necessary to keep the surroundings of the liquefied gas tanks well ventilated and free of combustibles. Only fire extinguishment should be carried out first. The liquefied gas station will be disposed.
　　The third is that if the liquefied gas cylinder is burned horizontally with the flame facing down, the liquefied gas tank is easily heated by the flame. After reaching a relatively high temperature, the liquefied gas in the bottle is heated and expanded, and the bottle body is prone to physical explosion. In the case of unpredictable and incapable of handling, we must dial the 119 fire alarm number for the first time, and wait for the firefighters to dispose of it. Try not to let the burning bottle fall to the ground to avoid side leakage and secondary explosion.

Related Reading:
Precautions for the use of liquefied gas cylinders Xiacheng City Management investigated and dealt with a case of filling expired unchecked liquefied gas cylinders Standardize the management and supervision of LPG stations How to use liquefied gas tank safely

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