The Localization Of Nuclear Power Equipment Valves In China Is Constantly Advancing

- Nov 11, 2019-

With the commencement of the second generation of improved nuclear power projects such as Hongyanhe and Ningde, and the introduction of the three-generation nuclear power technology after the introduction of Sanmen and Haiyang, the localization of nuclear power equipment has entered a substantive stage. Under the organization and coordination of the National Development and Reform Commission, the China Machinery Industry Federation actively cooperated, the equipment manufacturing industry and relevant owners have worked together, and the localization of nuclear power equipment has made significant progress recently.

First, a variety of nuclear grade valves passed the identification

Based on the Hongyan River project, the nuclear secondary containment isolation butterfly valve of the million-kilowatt pressurized water reactor nuclear power plant jointly developed by Jiangsu Shentong Valve Co., Ltd. and China Guangdong Nuclear Power Engineering Co., Ltd. was identified. The expert group believes that the performance of the valve meets the requirements of technology and related standards, and all technical indicators have reached the international advanced level.

Based on the Qinshan Phase II expansion project, the three nuclear primary valves and four nuclear secondary valves of the large-scale pressurized water reactor nuclear power plant jointly developed by China Nuclear Su Valve Technology Industrial Co., Ltd. and China National Nuclear Corporation Qinshan Nuclear Power Joint Venture Co., Ltd. . The expert group believes that the seven nuclear-grade valves have met the design requirements, especially the development of the nuclear-level high-Cv value swing-type check valve and the nuclear-level electric spring-type parallel double-gate gate valve. The level of similar foreign products.

stainless steel Check valve

Second, the LOCA identification laboratory began construction

In May 2008, in order to accelerate the identification of nuclear equipment, Zhongkehua Nuclear Power Technology Research Institute Co., Ltd. began construction of LOCA identification laboratory in Nanjing. The LOCA accident is a coolant loss accident caused by the pressure boundary damage of the primary circuit of a pressurized water reactor. At present, the largest 17m3 LOCA furnace in the world is built in the United States.

The LOCA appraisal laboratory of CGN Investment is the first in China. The China Kehua Research Institute is responsible for independent research and development, construction and operation. After completion, it will have the worlds largest LOCA furnace with a volume of 20m3. The laboratory identification conditions take into account CPR1000,

The requirements of the LOCA test for the nuclear power technology routes such as AP1000 and EPR can cover the equipment that is expected to require LOCA identification. The laboratory is expected to be completed and put into operation at the end of December 2008. After completion, it will provide guarantee for LOCA identification of various types, especially large nuclear equipment. The construction of the LOCA identification laboratory is of great significance to the development of the nuclear power industry, which can fill the gap in the field of LOCA identification test of large equipment in China, and is conducive to get rid of the current situation of relying on foreign countries for large nuclear equipment.

Third, Shanghai Electric KSB nuclear power pump and valve joint venture is about to be built

Germany KSB is a well-known manufacturer of nuclear power pump and valve manufacturing industry. The introduction of its technology will help promote the localization of nuclear power pump valves. After the National Development and Reform Commission and China National Machinery Association participated in the negotiations many times, KSB agreed to transfer all nuclear power primary, secondary and tertiary pumps and nuclear grade valve technology to China.

KSB and Shanghai Electric Group Co., Ltd. will jointly form Shanghai Electric-Kaisby Nuclear Power Pump  Valve Co., Ltd., and the joint venture contract will be signed recently. The investment ratio is 55% for SGD Group and 45% for KSB. Shanghai Electric Co., Ltd. And executive deputy general manager, KSB served as general manager, the companys address was selected at Shanghai Electric Lingang Heavy Equipment Base.

In the current unfavorable technical progress in the introduction of nuclear main pumps, the increase in requirements for nuclear power pump valves, the relatively concentrated nuclear power construction projects, and the urgent need to improve the domestic manufacturing industry, the construction of the joint venture controlled by the Chinese party to the nuclear power pump valves Localization will play a positive role.

Butterfly valve

Fourth, 100 tons of high-impedance electric arc furnace passed the identification

The first domestic 100-ton high-impedance electric arc furnace was certified in Shanghai. The appraisal committee believes that after 20 months of operation at Shanghai Heavy Machinery Co., Ltd., the 100-ton high-impedance electric arc furnace jointly developed by Xian Huaxing Electric Furnace Co., Ltd. and Shanghai Heavy Machinery Co., Ltd. is stable and reliable, and meets the design requirements. With independent intellectual property rights, it is at the leading level in China. The successful development of the 100-ton high-impedance electric arc furnace has laid a good foundation for the localization of large-scale castings and forgings for major technical equipment such as nuclear power, petrochemicals and metallurgy. After the heavy lifting, Yizhong also ordered a 100-ton electric arc furnace from Xian Huaxing Electric Furnace Co., Ltd., which has been put into trial operation. At present, Xian Huaxing is developing a 200-ton electric arc furnace to meet the needs of large forging smelting and metallurgical industries.

Fourth, Lingao Phase II first million kilowatt nuclear power steam generator completed manufacturing

The first million kilowatt nuclear power steam generator of Lingao Phase II was completed and delivered to the owner by Dongfang Electric (Guangzhou) Heavy Machinery Co., Ltd. Dongfang Electric held a delivery ceremony as scheduled after the 5.12 Wenchuan earthquake, indicating that the East stood up stubbornly from the earthquake and is working hard to resume production.

Since the full-scale production of the nuclear power main equipment manufacturing task of the Lingao Phase II project since its full production in September 2006, it has taken less than two years to overcome difficulties and achieve the goal of localization of nuclear power equipment manufacturing technology development and product production. . The successful manufacture and shipment of this equipment has made a good start for the domestic production of nuclear power products in the future. It will comprehensively upgrade the independent design and independent manufacturing capacity of Chinas million-kilowatt nuclear power plants, accelerate the development of Guangdongs nuclear power industry chain, and improve the entire South China region. The level of reloading industry has far-reaching significance.

In addition to the first million-kilowatt evaporators shipped, the second and third units have been finalized, and the installation site will be shipped in July 2008, with three others under construction. The main equipment plan for the entire Lingao Phase II project will be completed and delivered to the owners in 2009.

V. China-France Nuclear Power Standards Seminar Held

Nuclear power standardization construction is an important part of the localization work. China Mobile, China Guangdong Nuclear Power and the French Nuclear Island Equipment Design and Construction Rules Standards Association recently organized a Sino-French nuclear power standards seminar in Beijing. At the meeting, the French side introduced the French RCC standard system, standardization organization, RCC-M promotion status, comprehensive comparison with ASME–®, Frances experience of promoting localization and French power management of suppliers; relevant domestic nuclear power equipment manufacturing and The user unit introduced the status quo of Chinas nuclear power equipment standardization and future development, Chinas newly issued nuclear safety regulations and nuclear product certification procedures, the establishment of enterprise standards, and the problems encountered by manufacturing companies using RCC-M.

More than 200 representatives from Zhongkehua, Shanghai Power Generation Equipment Institute, Yizhong, Dongfang Electric and China Nuclear Su Valve participated in the seminar. While deepening the understanding of RCC-M, domestic enterprises participating in the conference also deeply realized that the standardization of nuclear power equipment is the basis for the independent development of nuclear power, and is the key to the start of nuclear power localization. We must jointly promote the formation of Chinas nuclear power standardization system.

At present, the localization of nuclear power equipment has shown a good trend, the research and development work has made progress, and the manufacturing enterprises have made progress. However, these are still far from the goal of localization, and they still need to concentrate on the advantages of the industry and rationally divide the main units. Focus on a group of enterprises that undertake tasks; RD expenses should be tilted to the backbone enterprises that undertake the tasks as much as possible, encourage and support enterprises with better foundations, strengthen technological transformation through listing or other financing methods, and improve the ability of enterprises to undertake localization tasks. Manufacturing companies also need to increase investment in research and development and transformation to strive for greater breakthroughs; the owners have the obligation and responsibility to actively assist manufacturing companies to do research and development of nuclear power equipment, and the owners must strengthen the exchange of localization experience. Jointly promote the localization of nuclear power equipment.