cableOnce a cable catches fire, the following methods should be used to extinguish the fire:

1) Cut off the power supply of the cable that caught fire. If a cable catches fire, regardless of the cause, the power should be immediately cut off. Then, based on the path and characteristics of the cable, a careful inspection should be conducted to identify the fault point of the cable. At the same time, personnel should be quickly organized to extinguish the fire.

2) Cut off the power supply of non faulty cables in case of fire in the cable trench. When the cables in the cable trench catch fire, if there is a clear possibility of fire in the cables laid side by side in the same trench, 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 fire cable, then cut off the power supply of the cable parallel to the fire cable, and finally cut off the power supply of the cable below the fire cable.

3) Close the fire door of the cable trench or block both ends of the cable trench. When the cables in the cable trench catch fire, in order to avoid air circulation and facilitate rapid fire extinguishing, the fire doors of the cable trench should be closed or both ends should be blocked, and suffocation should be used to extinguish the fire.

4) Take personal protective measures when extinguishing cable fires. Due to the large amount of thick smoke and toxic gas produced by cable fires, firefighters should wear gas masks when extinguishing cable fires. To prevent personal electric shock during the firefighting process, firefighting personnel should also wear rubber gloves and insulated boots. If a high-voltage cable is found to be grounded, firefighting personnel should comply with the following rules: do not enter within 4 meters from the fault point indoors, and do not enter within 8 meters from the fault point outdoors to avoid stepping voltage and contact voltage injuries. Injured personnel are not subject to this restriction, but protective measures should be taken.

5) Fire extinguishing equipment used to extinguish cable fires. Extinguishing cable fires should be carried out using fire extinguishers such as dry powder fire extinguishers, "1211" fire extinguishers, carbon dioxide fire extinguishers, etc; Dry sand or loess can also be used for covering; If the fire is extinguished with water, it is good to use spray water gun; If the fire is intense and cannot be extinguished by other means, after the power is cut off, water can be poured into the cable trench to seal the fault and extinguish the fire.

6) When extinguishing cable fires, it is forbidden to directly touch the steel armor of the cable and move the cable with your hands.