Once the cable catches fire, the following methods should be used to extinguish it:
(1) Cut off the power supply of the ignition cable. The cable catches fire and burns. Regardless of the cause, the power supply should be cut off immediately. Then, according to the path and characteristics of the cable, carefully check to find out the fault point of the cable, and at the same time organize personnel to put out the fire quickly.
(2) Cut off the power supply of the non-faulty cable if a fire occurs in the cable trench. When the cables in the cable trench catch fire, if the cables laid side by side with the cable trench have obvious fire possibility, the power supply of these cables should be cut off. If the cables are arranged in layers, first cut off the power supply of the heated cable above the fired cable, then cut off the power supply of the cable side by side with the fired cable, and finally cut off the power supply of the cable below the fired cable.
(3) Close the fire door of the cable trench or block both ends of the cable trench. When the cable in the cable trench catches fire, in order to avoid air circulation and quickly extinguish the fire, the fire door of the cable trench should be closed or both ends should be blocked, and the suffocation method should be used to extinguish the fire.
(4) Do personal protection when extinguishing cable fire. Since a large amount of smoke and poisonous gas will be generated when the cable is on fire, the rescuer should wear a gas mask when extinguishing a cable fire. In order to prevent personal electric shock during the rescue process, rescuers should also wear rubber gloves and insulating boots. If the high-voltage cables are found to be grounded, the rescuers should observe: indoors shall not enter within 4m from the fault point, and outdoors shall not enter the distance from the fault Within 8m, so as not to hurt people by step voltage and contact voltage. Rescue of injured persons is not limited to this limit, but protective measures should be taken.
(5) Fire extinguishing equipment used to extinguish cable fires. To extinguish cable fires, fire extinguishers should be used, such as dry powder fire extinguishers, "1211" fire extinguishers, carbon dioxide fire extinguishers, etc.; dry sand or loess can also be used; Other methods may be used to fight the fire. After the power supply is cut off, water can be poured into the cable trench to seal the fault and extinguish the fire.
(6) When fighting a cable fire, it is forbidden to directly touch the cable steel armor and move the cable with your hands.
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