Panzhihua: 25,000 m花 gas cabinet fire fire for 8 hours

At 11:02 on June 13, 2022, the 119 Command Center of the Fire Rescue Division of Panzhihua City, Sichuan Province received an alarm saying that: The Gas Cabinet of the Gas Cabinet at Malan Mountain Farm Station in the East District of Panzhihua City was fire. After receiving the police, the Panzhihua Fire Rescue Detachment responded as soon as possible in accordance with the plan, and the command center dispatched 7 fire trucks and more than 100 fingertips to dispose of 7 fire trucks.

Super large, flammable

The rescue ushered in a huge challenge

According to the relevant person in charge of the on -site headquarters, the fire is a large wet spiral lifting gas cabinet this time. The total design capacity is 54,000 cubic meters, the actual storage capacity is 25,000 cubic meters, the storage volume is huge, and the leakage of the fire material is gas. The main ingredients are carbon dioxide, hydrogen, alkane, olefins, aromatics, etc., which have the characteristics of extensive explosion limit and difficulty in water. At the same time, the fire point is located on the edge of the top of the gas cabinet. It is a great challenge to the personal safety of the fire -extinguishing rescue or fire rescue personnel.

After the accident, the Guiziping Fire Rescue Station reached the scene as soon as possible. After conducting reconnaissance inquiries, they immediately organized personnel to cool out the water out of water, and sent personnel to evacuate employees in the factory area.

At 11:25, the detachment's Qinqin Command arrived at the scene and immediately set up the scene headquarters. Due to the difficulty of handling on -site disposal, the on -site headquarters quickly adopted tactical measures such as evacuation residents, expanding warning, cooling and explosion, process priority, and pressure prevention. In terms of warning evacuation, in addition to the evacuation and strict control of unrelated personnel entry and exit of employees at the scene, they first reported to the municipal government and organized the public security and street -office communities to organize the crowd within 1,000 meters of the surrounding people. All organizations have been evacuated. In the initial battle control and cooling and explosion, organizing a high -spray car to cool in the southwest of the cabinet. A high -power water tank was cooled with a car cannon on the north platform of the cabinet to ensure that the leakage burning mouth was in a positive pressure. Burning and controlling the fire further expanded.

Expert linkage, analysis and judgment

Provide scientific decisions for disposal

Because the detachment encountered such fire for the first time and the on -site situation was more complicated, the on -site command reported to the municipal government to send two gas experts to the presence to assist in the municipal government. At 12:20, after analysis and judgment at the scene, the expert group clearly proposed that the prerequisite for this disposal was "guaranteed positive pressure" and the key measures were "preventing the fire", which provided accurate decision -making for subsequent fire extinguishing rescue operations.

According to experts, ensure that the gas is continuously and stable, reduce the amount of gas in the cabinet's body, and gradually weaken its fire. While preparing for the final fire and fire, it can also reduce the danger after the explosion; When the storage amount is stored, the valve must be turned off to stop the gas to the cabinet, and at the same time input nitrogen, so that the cabinet body is always positively pressed, ensuring that the leak is kept stable and combined without causing a recovery. After on -site research and judgment, the headquarters immediately organized personnel to implement expert opinions to close the nitrogen injection.

Safety first, emergency risk aversion

Stise

According to the person in charge of the on -site headquarters, the combat operation will always implement the whole process. Persons who enter the scene must take anti -static measures and carry sparkless tools. At the same time, two observation whistles are arranged to observe the changes in cabinets and fire sources through the telescope at a height, and use infrared reconnaissance drones to monitor the change of fire source in real time to provide accurate information support for the on -site command decision.

(Cabinet fire source heat image diagram during the bright fire period)

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Due to the wet spiral lifting characteristics, the cabinet always maintains positive pressure. In addition, the stable and continuous combustion of the leakage site will gradually decrease, and the height will gradually decrease. When the fire is generated, because the remaining gas remains in the cabinet, the air enters the mix of mixing, and its concentration reaches the limit of the explosion, and the explosion occurs. At this time, there are two types of disposal measures in front of the fire extinguishing operation: one is to quickly extinguish the fire while falling, but if the fire extinguishing the fire is unsuccessful, the remaining gas in the fire cabinet can cause explosion, which will cause casualties; The other is an emergency evacuation on the spot, cooling with a fixed high -spray vehicle to ensure the safety of the site personnel while achieving cooling and explosive combat purpose. At 15:02, the on -site safety officer found that the drop in the cabinet was significantly accelerated and there was a risk of fire. The headquarters immediately organized all staff to evacuate to the safe location. A high -spray car was left in the southwest of the cabinet to supply water. Essence

Stubborn equipment, play an advantage

A total attack of a drum

At 15:54, with the evaluation of on -site experts and technical staff, the gas pressure in the cabinet continued to decrease, the fire showed a downward trend, and no fire explosion occurred. The on -site headquarters agreed with the experts and decided to prepare the overall attack by the way to cover the fire. After the testing instrument was safe, the on -site headquarters adjusted its strength in a timely manner and ordered a total attack on the scene: the two high -spray cars were foam on the southwest of the cabinet to seal the fire extinguishing fire.

At 16:34, the on -site flames were all extinguished. The headquarters ordered on -site forces to monitor continuous pressure, temperature, and abundant gas leakage of the fire to the fire site and surrounding cabinets. Caused repetition.

At 17 o'clock, the gas concentration and pressure were detected. The organizers of the factory area blocked the leak, installed blind plates at the gas import and export to block, and extracted the remaining gas analysis concentration in the cabinet. The on -site headquarters ordered two high -spray cars to continue to cool down.

At 18:50, according to the monitoring of relevant technical personnel, the gas concentration and pressure in the cabinet have fallen to the scope of safety. There is no repetition and explosion danger. The on -site danger was successfully eliminated.

After nearly 8 hours of hard work, the fire rescue workers were closely cooperated with corporate experts and technicians to fight side by side, and successfully disposed of the fire accident to ensure the safety of the factory and the surrounding people.

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Source: China Fire Fighting

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