The Chongqing Key Technology Innovation Project undertaken by Chongqing Chuanyi Complete Plant - "Nuclear Power Plant Nuclear Island Cable Bridge" was adopted by the Chongqing Municipal Economic Commission on June 17 by China National Nuclear Corporation and the Second Design Institute of Nuclear Industry. New product appraisal by the appraisal committee composed of experts from the Nuclear Safety Center of the State Environmental Protection Administration, the Electrical Instrument Control Installation Department of China Guangdong Nuclear Power Engineering Co., Ltd., the Nuclear Power Qinshan Joint Venture Company, the Shanghai Nuclear Engineering Research and Design Institute, and Tongji University. The product passed the appraisal, marking Chongqing Chuanyi has reached a new level in the development of nuclear power products.
At the product appraisal meeting, the appraisal committee carefully listened to the product development report, seismic test report, seismic performance calculation and analysis report, routine test report, and scientific research report, etc., and reviewed relevant technical documents and materials in detail, and inspected the production. on site. The expert committee believes that the nuclear power plant nuclear island cable bridge developed by Chongqing Chuanyi Complete Plant has reasonable product structure and reliable design. It adopts cold-formed profile structure and has the characteristics of high strength, good rigidity, high dimensional accuracy and good interchangeability. The surface hot-dip galvanized coating has reliable adhesion and protection, and its corrosion resistance is good.
It is reported that during the development process, the product passed the seismic test, mechanical analysis and calculation of the shaking table test room of the State Key Laboratory of Civil Engineering Disaster Prevention of Tongji University, and the 200-hour salt spray test and alternating test of the 18th metrology test center of the machinery industry. Performance tests such as damp heat test, attached force test, mechanical load test, load test of support and hanger, zinc layer continuity test, and protection circuit continuity test prove that the product meets GB13625-92 "Non-seismic appraisal of electrical equipment for safety system of nuclear power plant" And JB/T10216-2000 "Electric Power Distribution Cable Tray" requirements, its technical performance indicators have reached and meet the technical requirements of the current nuclear power plant nuclear island cable tray.
The nuclear power plant nuclear island cable bridge manual prepared by the plant has complete varieties and convenient product selection; the nuclear power plant nuclear island cable tray design and manufacturing quality assurance program prepared in the product development process is effective; the process and equipment are excellent, complete, and tested. The test equipment is complete and has the capability of mass production. HAXQJ series nuclear power plant nuclear island cable tray has reliable seismic performance and strong anti-corrosion performance. The products have reached the advanced level of similar products in China and can replace imported products.
The expert appraisal committee unanimously approved the adoption of new product identification. It is also recommended that the complete plant further strengthen the nuclear culture construction to meet the requirements of users of different nuclear power plants; strengthen the quality control monitoring of the cooperative units and make greater contributions to the localization of nuclear power equipment.
The nuclear power plant nuclear island cable bridge is used to support nuclear islands of nuclear power plants and various cables laid in conventional islands. It is a continuous rigid system structure. It can perform its support protection function under the fault conditions caused by the nuclear power plant safe shutdown earthquake, and can work normally. It is the component that protects the safe operation of the reactor. The nuclear power plant cable tray of nuclear power plant jointly developed by the complete plant and the Second Nuclear Power Plant is designed to combine the current status of China's basic industry, making full use of China's steel resources, hot-dip galvanizing process, machining equipment and welding technology, in line with the development of national nuclear power technology. The idea of ​​"taking me as the main, combining Chinese and foreign, introducing technology, and promoting localization" has achieved the goal of realizing the localization of nuclear power plant cable trays and establishing the design and manufacturing standards for nuclear power plant cable trays.
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