What are the countermeasures for cable fires?

(1) Select cables that meet the thermal stability requirements. The selected cable is capable of meeting the heating requirements under normal operating conditions at its rated load, and it can maintain short-term thermal stability in case of a short circuit, thereby preventing the cable from overheating and catching fire. 　　 　　(2) Prevent operational overload. When the cable is in operation under load, it should generally not operate beyond its rated load. If overload operation occurs, the duration of such overload must be strictly controlled to prevent the cable from overheating and catching fire. 　　 　　(3) Comply with the relevant regulations for cable laying. When laying cables, they should be kept as far away as possible from heat sources. It is necessary to avoid laying them parallel to or intersecting with steam pipes; if such alignment is unavoidable, a specified distance must be maintained and insulation measures should be taken. It is prohibited to lay cables parallel to heat pipes, either above or below them, along the entire length of the cable ； In the tunnels or ditches of some pipelines, it is generally advisable to avoid laying cables; if laying them is necessary, insulation measures should be taken ； Cables installed in the air, especially plastic and rubber cables, should have insulation measures to protect them from the thermal effects of hot pipes and similar sources of heat ； When laying cables, the distance between cables, as well as between cables and thermal pipelines or other types of pipelines, and between cables and roads, railways, buildings, etc., whether in a parallel or intersecting configuration, must meet the requirements specified in the regulations ； Furthermore, a wave-shaped margin should be left when laying the cables to prevent excessive tension from occurring due to contraction when the cables stop operating in winter, which could damage the cable insulation. When bending cables, a minimum radius of curvature should be ensured to prevent excessive bending from damaging the cable insulation ； Joints should be avoided in cable tunnels, as cable joints represent the weakest point in terms of insulation, and short circuits in the cables are likely to occur at these joints. When it is necessary to install intermediate joints in the tunnel, fire-resistant partitions should be used to separate them from other cables. The above regulations regarding cable installation are effective in preventing cable overheating, insulation damage, and fires. 　　 　　(4) Regular inspections. Power cables should be inspected regularly, and the air temperature in the cable trenches as well as the temperature of the cables should be measured periodically. In particular, it is necessary to keep records of the temperature of high-capacity power cables and cable joint boxes. Defects are detected and addressed in a timely manner through inspection. 　　 　　(5) Strictly seal cable openings and holes, and install fire doors and partition walls. To prevent cable fires, all cable openings that pass through walls, floors, shafts, and cable trays to reach control rooms, cable lobbies, control cabinets, instrument panels, switchgear, etc., must be tightly sealed (seal tightly, neatly, and aesthetically, without damaging the cables). Fireproof partitions and fireproof doors should be installed in longer cable tunnels and their branching entrances. Under normal circumstances, the doors on cable trenches or openings should be closed; this way, in the event of a fire in the cables, it is possible to isolate or limit the area of combustion and prevent the fire from spreading. 　　 　　(6) Remove the jute outer sheath from the surface of non-buried cables. Buried cables have a jute protective layer coated with asphalt or similar substances on their surface, which serves to protect them when buried underground. When such cables are placed in cable trenches, tunnels, or shafts, the jute protective layer coated with asphalt or similar substances must be removed in order to reduce the risk of fire spreading. At the same time, the covers over the cable trenches should be properly in place; they must be intact and sturdy, to prevent welding slag from falling in and reducing the risk of cable fires. 　　 　　(7) Keep the cable tunnel clean and properly ventilated. Cable tunnels or channels should be kept clean; no garbage or debris shall be piled up within them. Water and oil accumulated in the tunnels and channels must be removed promptly ； Under normal operating conditions, cable tunnels and ducts should have adequate ventilation. 　　 　　(8) Maintain good lighting in cable tunnels or channels. The lighting in cable layers, cable tunnels, or channels is kept in good condition, and special ladders are provided at the entrances to those tunnels and channels where access is required, to facilitate routine inspections and the suppression of cable fires. 　　 　　(9) Prevent sparks from entering the cable trench. When performing open-flame operations near cables, measures should be taken to prevent sparks from entering the trench. 　　 　　(10) Conduct regular inspections and tests. In accordance with the relevant regulations and the actual operating conditions of the cables, regular maintenance and testing should be carried out on them, so as to address defects promptly and detect latent faults, ensuring the safe operation of the cables and preventing cable fires. When entering cable tunnels or ducts for maintenance or testing work, the relevant provisions of the \"Electrical Safety Work Procedures\" must be followed. Article link: China Security Exhibition Network http://www.afzhan.com/Tech_news/detail/83633.html

Generally, our office is equipped only with carbon dioxide fire extinguishers; another option is to cut off the power supply.

1. Cut off the power supply and investigate the fire； 2. Block and encircle to prevent spread ； 3. Resolve quickly, extinguish the fire up close ； 4. Smoke, gas, and electric shock protection ； 5. Suffocation fire extinguishing can be used.

Remedial actions during the incident: 1. Cut off power supply； 2. Alarm ； 3. Evacuate the crowd ； 4. CO2 fire extinguishing. Post-event remediation: Comply with standards ； Preventive remedy: Answer on the second floor.

If a cable catches fire, first of all, cut off the power!

1) Cut off the power supply and investigate the fire situation. • 2) Block and encircle to prevent the spread； 3) Resolve quickly, extinguish the fire up close ； 4) Smoke, gas, and electric shock protection ； 5) Smothering can be used to extinguish the fire