Usually we often see fires happening in the news. In some places, it is very prone to fires, such as flammable and explosive materials, chemical liquids, some workshops, cotton, long-term cotton chips attached to the cable, machinery The opportunity for an increase in operating temperature causes a fire. We need to know what harm it will bring to us by preventing the occurrence of a fire.

 

The probability distribution of cable fires is mainly in thermal power plants, such as coal ash, oil and other high-temperature environments, in thermal power plants, steel and petrochemical enterprises, and in densely-spaced cable groups. In boilers and steam turbines, the probability of occurrence is highest. It is mainly located in the explosion-proof door of the milling system, the furnace body and the high-temperature pipeline, and the vicinity of the oil pipeline.

 

Cable bridge fires occur, such as cable overheating, short circuit, insulation aging or insulation deterioration, etc., there are also external factors caused by pulverized coal or oil leakage through high-temperature ignition, electric welding slag and other flammable materials, and statistics show internal and external causes. Almost half of them, the analysis that it is difficult to completely prevent by simply strengthening management, creating conditions conducive to cable fire prevention and delaying combustion during construction, there is a positive significance of disaster reduction. The extent of the cable bridge's spread after fire and its hazards vary. When the number of clear cable is small, it may not form a flame retardant and self-extinguish; densely laying cables, especially in the case of channels, shafts, etc., the fire is developing rapidly. In some places or circuits, cable fires are not lost much. Sometimes, if important circuits or places are involved, or a small number of local cables are on fire, it will cause a wide range of power outages or accidents. As for the case of a dense cable group tunnel, or an external cable fires through an unblocked hole to the control room cable layer, there are many destructive examples of burning and converging numerous cables.

 

Cable tray warm reminder: the use of flame-retardant cables can not avoid the fire of the cable. The flame retardancy passed by the current standard assessment is often insufficient to effectively prevent the flame retardancy of the equivalent engineering conditions. Therefore, the cable fire may still exist to limit the accident. Expanding and considering the limited increase in investment, it is necessary to separate the appropriate fire arrest. Cables that may catch fire and cause serious accidents, cables that are vulnerable to external influences and fires should be properly separated by fire, and safety measures should be taken according to factors such as project importance, fire probability and characteristics, and economic rationality. .