Cable tying method for nuclear power plant radiation area

Abstract

The invention discloses a cable tying method for a nuclear power plant radiation area, which is characterized by comprising the following steps: horizontally arranging a copper braided cable tie undera bridge crosspiece of the nuclear power plant radiation area, and threading the end part one and the end part two of the copper braided cable tie to the rear of a cable clinging to the bridge crosspiece; folding the end part one and the end part two of the copper braided cable tie forward; twisting the end part one and the end part two into a strand and winding. The cable tying method for a nuclear power plant radiation area in the invention has the following characteristics: solving the cable tying problem in the radiation area of the reactor of the nuclear power plant, meeting the design requirements, meeting the service life requirement of the nuclear power plant, not damaging the cable, and meeting the requirement for high temperature irradiation; the copper braided cable tying method is simple, practical, reliable and convenient for operation on site; and the copper braided cable tie achieves localization, reduces the cost and improves the production efficiency.

Description

technical field [0001] The invention relates to a cable binding method in the radiation area of ​​an AP1000 nuclear power plant, and can also be used for cable binding in the radiation area of ​​a subsequent CAP nuclear power project and cable binding in other nuclear power radiation areas. Background technique [0002] The cables in the vertical section of the radiation area of ​​the nuclear power plant reactor building are not bound and fixed, and the length of the vertical section is nearly 20 meters. Due to the self weight of the cable, a pulling force will be generated to cause damage to the cable. But the existing nuclear power plant cable ties really cannot meet the requirements. [0003] Cable ties commonly used for cable fixing in nuclear power plants are stainless steel ties, wire ties and Teflon ties. The cable ties used in the radiation area of ​​the AP1000 nuclear power plant reactor have no specific materials and models. The Teflon cable ties used on site are ...

AI Technical Summary

Problems solved by technology

The cable ties used in the radiation area of ​​the AP1000 nuclear power plant reactor have no specific materials and models. The Teflon cable ties used on site are not resistant to high temperature and radiation; conventional cable binding wires are not resistant to radiation; stainless steel cable ties are used in the reactor building When there is a LOCA event, the temperature changes. Under the action of high temperature and high radiation, due to the different expansion coefficients of the cable insulation and the outer sheath and the stainless steel cable tie, the stainless steel cable tie may cut the cable outer sheath and generate debris to block the drainage channel

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