The gas tank is on fire, should we put out the fire first or close the valve first？ The authoritative answer is coming!
At 11 o’clock in the morning on October 13th.
New Lu Yang, Ehu Town, Xishan District, Wuxi, Jiangsu Province
A gas explosion occurred in a snack bar.
Nine people have been killed and 10 injured.
After the accident,
A story about when the gas is on fire
Fire training video of whether to put out the fire or close the valve first.
Aroused a lot of attention from netizens.
In the video
A man in a white uniform claimed
After gas explosion, put out the fire first and then close the valve.
Weibo, official of the Fire and Rescue Bureau of the Emergency Management Department
@ China Fire responded quickly:
The man in the "white uniform"
Not a fireman!
Don’t be misled by it!
How to deal with the fire of liquefied gas cylinders
@ China Fire also released an authoritative answer:
According to the site conditions
Take different disposal measures
First kind
When the valve of liquefied gas cylinder is intact, the first choice is to close the valve, and the fire will go out when the valve is closed.The situation circulating on the Internet that "put out the fire first, then close the valve, otherwise it will backfire and lead to explosion" will not happen when the liquefied gas cylinder is on fire. Only when the gas pipeline is on fire, if the valve is closed quickly, the pressure in the pipeline will drop rapidly, and the pressure outside the pipeline is greater than the pressure inside, so that the fire will be pressed into the pipeline to cause tempering.
When dealing with the fire of gas pipeline, firefighters will first slowly close the pipeline valve to the minimum state, and then close the valve to put out the fire after minimizing the flame. This is to prevent backfire. The bottle body and bottle mouth of liquefied gas steel bottle are relatively small, and the pressure is relatively small, so there will be no pressure difference, and the pressure inside the liquefied gas steel bottle is greater than that outside.
the second type
If the valve of the burning liquefied gas cylinder is damaged, it is not necessary to put out the fire. First, carry the liquefied gas cylinder to an open area to stand and place it, then cool the cylinder with water and wait for the liquefied gas to burn completely.; If the burning liquefied gas cylinder can’t be transferred in residents’ homes, it is well ventilated and there are no combustibles around, you can put out the fire first, then block the bottle mouth with wet rags and other items, and send it to a professional liquefied gas station for disposal.
The third kind
If the liquefied gas cylinder falls to the ground horizontally and the flame burns downward, the cylinder is easily heated by the flame. After reaching a certain temperature, the liquefied gas in the bottle is heated and expanded, and the bottle body is prone to physical explosion.
Once again, in the case of unpredictable and incompetent disposal, you should call 119 at the first time, wait for firefighters to be on the scene for disposal, and don’t let the burning bottle fall to the ground.