Nuclear power plant cables refer to the raw materials used for nuclear power plant cable insulation and sheathing, including plastic, rubber and many other varieties. The type of cable is determined by the type of cable.
There are two ways to classify nuclear power plant cables: one by function, including, measurement cables, communication cables, instrumentation cables, fire-resistant cables (silicon-insulated cables), etc.; the other is by safety level, the safety level of cables for nuclear power plants belong to IE level, while should have a service life of more than 4O years, IE level nuclear power plant cables are further divided into K1, K2 and K3, three safety levels. The development process of nuclear power plant cable products is essentially the renewal of materials, the type of cable and the choice of raw materials.
Nuclear power plant cables mainly use polyethylene as the main material. Such as the use of ethylene - vinyl acetate copolymer preparation of nuclear power plant IE level cable material, the cable has better mechanical and processing properties, high temperature resistance, burning is not easy to drip and other advantages.
Chlorosulfonated polyethylene as the main skeleton material, and a certain amount of ethylene propylene rubber, peroxide as a vulcanizing agent, HVA-2 and TMTP as a co-sulfurizing agent, aluminum hydroxide as a flame retardant, zinc stearate as a surface treatment agent.
Foreign EPR has been widely used in power cables, mining cables, marine cables, motor lead wires and nuclear devices with cables and other heat-resistant and high-voltage products, the use of about 10% to 15% of the total amount of rubber used in the cable industry.
The direction of scientific and technical development in domestic cable engineering in Russia is again based on the study of whether there is innovation.