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The spread of the cable after the fire determines the damage is different

  • Categories:Zhongrui News
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  • Time of issue:2019-05-28 14:30
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(Summary description)In the occurrence of cable fires, there are internal factors such as cable overheating, short circuit, insulation aging or insulation deterioration. There are also external factors such as pulverized coal or oil leakage through high temperature ignition, electric welding slag and other combustible materials. The statistics show that the internal and external causes are almost Each accounted for half of the analysis. It is considered that it is difficult to completely prevent it by strengthening management alone. When creating construction conditions that are conducive to cable fire prevention and prevention of flame retardation, there is a positive significance for disaster reduction.

The spread of the cable after the fire determines the damage is different

(Summary description)In the occurrence of cable fires, there are internal factors such as cable overheating, short circuit, insulation aging or insulation deterioration. There are also external factors such as pulverized coal or oil leakage through high temperature ignition, electric welding slag and other combustible materials. The statistics show that the internal and external causes are almost Each accounted for half of the analysis. It is considered that it is difficult to completely prevent it by strengthening management alone. When creating construction conditions that are conducive to cable fire prevention and prevention of flame retardation, there is a positive significance for disaster reduction.

  • Categories:Zhongrui News
  • Author:
  • Origin:
  • Time of issue:2019-05-28 14:30
  • Views:
Information
In the occurrence of cable fires, there are internal factors such as cable overheating, short circuit, insulation aging or insulation deterioration. There are also external factors such as pulverized coal or oil leakage through high temperature ignition, electric welding slag and other combustible materials. The statistics show that the internal and external causes are almost Each accounted for half of the analysis. It is considered that it is difficult to completely prevent it by strengthening management alone. When creating construction conditions that are conducive to cable fire prevention and prevention of flame retardation, there is a positive significance for disaster reduction.
 
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 fires are accidental, and the corresponding investment is inevitable. The purpose of disaster reduction is to seek social and economic benefits, and it is necessary to estimate the sum of investment. In this sense, appropriate investment should be avoided to avoid major losses, just as flood control investment has the same meaning, although it cannot be absolutely exempted. It can always reduce disasters.
 
It is worth noting that the use of flame-retardant cables does not prevent the cable from catching fire. 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 continue to exist, limiting the accident expansion. Separating the appropriate fire arrest is a necessary measure, given the limited increase in investment.
 
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. .

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