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Do you know what the characteristics of nuclear cables are?

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Do you know what the characteristics of nuclear cables are?

作者: Release Date: 2018-05-16 Author: Click:

Radiation resistance


Mitigation of the environment, severe environment When nuclear cables are exposed to a large amount of radiation, the insulation and sheath materials will become brittle and the mechanical properties will be poor. Therefore, as the insulation and sheath material for nuclear power station cables, it must have excellent radiation resistance.


Different polymers have different radiation resistance. People usually add anti-radiation agents to polymers to improve their radiation resistance. With regard to the resistance of the cable to L0CA, different nuclear power plants have different requirements.


In summary, in addition to the performance of ordinary cables, nuclear-grade cables must also have halogen-free, low-smoke, and flame-retardant properties, and meet the safety functions required for normal and accident environments in the laying area. The necessary performance requirements are also to meet the requirements of earthquake resistance, normal and accident conditions-radiation exposure, environment resistant to LOCA / HELB accident conditions, and the service life of the power station design life at operating temperature.


In addition, the service life of nuclear-grade cables, the original design index is more than 40 years, and the next-generation nuclear power station is required to reach 60 years. Therefore, whether the original design can meet the requirements for use still needs further experimental verification. How to extend the service life of cables has become an important research topic.


Low-smoke halogen-free flame-retardant nuclear cable is a special cable with high performance level and difficult manufacturing. Even imported products have exposed many problems in the application process, and some are even serious problems. How to deal with these problems can not be avoided. Whether it is possible to consider the use of low-smoke and low-halogen flame-retardant materials to produce special cables for nuclear power plants is an idea that cable industry workers can explore. This will reduce the difficulty of formula design of cable materials, make the production process easier to implement, product quality will be more reliable, and it will be safer in practical applications.


Nuclear-grade cable is a kind of cable with high performance level and difficult manufacturing technology. At present, the production technology is not fully mature and needs to be further studied.

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URL of this article: http://herzheart.com/南方双彩网/377.html

Keywords: Henan wire and cable , Zhengzhou wire and cable , Henan wire and cable manufacturer

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