August 09, 2020

China's nuclear power equipment valve localization work is constantly advancing

With the commencement of the construction of the second generation of improved nuclear power projects such as Hongyanhe and Ningde, and the introduction of third-generation nuclear power technologies such as Sanmen and Haiyang, the localization of nuclear power equipment has entered a substantive stage. Under the coordination of the National Development and Reform Commission, the China Machinery Industry Federation actively cooperated with the equipment manufacturing industry and the relevant owners to make joint efforts, and the localization of nuclear power equipment has made significant progress.
First, a variety of nuclear-level valves through the identification
Based on the Red River project, the Shenzhou Tongtong Valve Co., Ltd. and China National Nuclear Power Engineering Co., Ltd. jointly developed the nuclear secondary containment isolation butterfly valve of the 1,000,000-kilowatt PWR nuclear power plant. The expert group believes that the valve performance meets the requirements of technology and related standards, and all technical indicators have reached the international advanced level.
Relying on the Qinshan Phase II expansion project, the three nuclear primary valves and four nuclear secondary valves of the large pressurized water reactor nuclear power plant jointly developed by China Nuclear Sohu Technology Industrial Co., Ltd. and China Nuclear Power Group Qinshan Nuclear Power Co., Ltd. passed the appraisal. . The expert group believes that all seven nuclear-level valves have met the design requirements, and in particular, the development of nuclear-level high-Cv value swing-opening check valves and nuclear-second-level electric spring-type parallel double-sluice gate valves has filled the domestic gap. The level of similar foreign products.
For more than a year, nuclear power valve manufacturing companies have teamed up with owners of China Guangdong Nuclear Power Group Co., Ltd. and China National Nuclear Industry Group Co., Ltd., and have made gratifying progress in the research and development of some key nuclear valves. According to the tender status of nuclear grade valves for the Qinshan and Hongyan River projects, combined with the existing capacity and performance of the valve industry, the localization rate of the valves for Hongyanhe No. 1 and No. 2 units will reach about 35%; after another 1 to 2 years, With R&D, nuclear power valve manufacturing will achieve greater breakthroughs, and localization rates on Hongyanhe 3 and 4 units are expected to reach 60%.
II. The establishment of the LOCA accreditation laboratory
In May 2008, in order to accelerate the identification of nuclear-grade equipment, China Nuclear Power Technology Research Institute Co., Ltd. began to establish a LOCA accreditation laboratory in Nanjing. The LOCA accident is a loss of coolant caused by the destruction of the pressure boundary of the primary circuit of the PWR nuclear power plant. At present, the world’s largest 17m3 LOCA furnace was built in the United States.
The China-Guangdong Nuclear Power Investment Co., Ltd.'s LOCA accreditation laboratory is the first in China. The China Science and Technology Research Institute is responsible for independent research and development, construction and operation. After completion, it will have the world's largest LOCA furnace with a volume of 20m3. The laboratory identification conditions take into account the CPR1000,
The requirements of the LOCA test for the nuclear power technology route such as AP1000 and EPR, the size and parameters can cover related equipment that are expected to require LOCA identification. The laboratory is expected to be completed and put into operation by the end of December 2008. Upon completion, it will provide assurance for LOCA identification of all types of equipment, especially large-scale nuclear equipment. The construction of the LOCA accreditation laboratory is of great significance to the development of the nuclear power industry, and it can fill gaps in the field of LOCA accreditation tests for large-scale equipment in China, which is conducive to getting rid of the status quo of the dependence of large nuclear-grade equipment on foreign countries.
Third, the Shanghai Electric KSB Corporation nuclear power valve joint venture will soon be built
KSB is a well-known manufacturer of international nuclear pump valve manufacturing. The introduction of its technology will help promote the localization of nuclear pump valves. After the National Development and Reform Commission and China National Machine Engine Co., Ltd. participated in the negotiations several times, KSB agreed to transfer all nuclear pump technologies, including nuclear pump grades I, II, and III, and nuclear valve technology to China.
KSB and Shanghai Electric Group Co., Ltd. will jointly establish Shanghai Electric-Kashibi Nuclear Pump Valve Co., Ltd. The joint venture contract will be signed recently. The investment ratio will be 55% for Shanghai Power Group, 45% for KSB, and Shanghai Electric will serve as chairman. Deputy General Manager and General Manager, KSB served as general manager, and the company’s address was selected at Shanghai Electric Lingang Reloading Base.
In the current situation of the unfavorable progress in the introduction of nuclear main pumps, the increase in the nuclear power requirements for nuclear-grade pump valves, the relative concentration of nuclear power construction projects, and the urgent need to increase the level of domestic manufacturing, the establishment of the joint venture by the Chinese party to the development of nuclear power valves Localization will play an active role.
Fourth, 100 tons of high-impedance electric arc furnace passed the appraisal
The first 100-ton high-impedance electric arc furnace made in China was certified in Shanghai. The appraisal committee believes that after 20 months of operation at Shanghai Heavy Machinery Factory Co., Ltd., the 100-ton high-impedance electric arc furnace co-developed by Xi'an Huaxing Electric Furnace Co., Ltd. and Shanghai Heavy Machinery Factory has been operating smoothly and reliably, and has met the design requirements. With independent intellectual property rights, ranking the leading domestic level. The successful development of a 100-ton high-impedance electric arc furnace has laid a good foundation for the domesticization of large-scale castings and forgings that are supported by major technical equipment such as nuclear power, petrochemical, and metallurgy in China. Following the heavy lifting, Yizhong also ordered a 100-ton electric arc furnace from Xi'an Huaxing Electric Furnace Co., which has now been commissioned. At present, Xi'an Huaxing is developing a 200-ton electric arc furnace to meet the needs of large forging smelting and metallurgical industries.
V. The first million-kilowatt nuclear power steam generator completed in Lingao Phase II
Lingao's second million-kilowatt nuclear steam generator was manufactured and delivered to the owner at Dongfang Electric (Guangzhou) Heavy Machinery Co., Ltd. Dongfang Electric held a shipping ceremony after the devastating 5.12 Wenchuan earthquake, indicating that the East has stood up tenaciously from the earthquake and is working hard to resume production.
It has taken less than two years since Dongfang Heavy Machinery Co., Ltd., which was responsible for the nuclear equipment main equipment manufacturing task of Lingao's second phase project, has been put into operation since September 2006, has overcome difficulties, and achieved the goal of developing nuclear power equipment manufacturing technology and products. . The successful manufacture and shipment of this equipment has opened up a good head for the localization of mass production of nuclear power products in the future. It will comprehensively upgrade the independent design and self-manufacturing capabilities of China's million-kilowatt-class nuclear power plants, accelerate the development of the Guangdong nuclear power industry chain, and improve the entire southern China region. The level of repackaging is of far-reaching significance.
In addition to the shipment of the first million kilowatt evaporators, the second and third units have completed the final assembly. The installation site will be shipped in July 2008 and the other three are under construction. The entire Lingao Phase II project master plan will be completed in 2009.
VI. Seminar on China-France nuclear power standards
Nuclear power standardization construction is an important part of localization work. China National Machines Association, China Guangdong Nuclear Power and French Nuclear Island Equipment Design and Construction Standards Association recently organized a Sino-French nuclear power standards seminar in Beijing. At the meeting, France introduced the French RCC standard system, the standardization organization, the current status of RCC-M promotion, the comprehensive comparison with ASME, the experience of France in promoting localization, and the management of French power suppliers to suppliers; related to domestic nuclear power equipment manufacturing and The use unit introduced the current status and future development of China's nuclear power equipment standardization, China's newly promulgated nuclear safety regulations and nuclear-level product certification procedures, corporate standards construction, and problems encountered by manufacturing companies in the use of RCC-M.
About 200 people including representatives from China Kehua, Shanghai Power Generation Equipment Co., Ltd., First Wealth, Dongfang Electric, and China Nuclear Susui Valve attended the seminar. The participating domestic companies deepened their understanding of RCC-M, and also deeply realized that the standardization of nuclear power equipment is the basis for the independent development of nuclear power and the key to the domesticization of nuclear power. We must jointly promote the formation of China's nuclear power standardization system.
At present, the localization of nuclear power equipment has shown a good momentum, progress has been made in research and development, and manufacturing companies have made progress. However, these are still a long way from the goal of localization, and they still need to focus on industry advantages and carry out a rational division of labor on the main undertaking units. Focusing on a group of companies that undertake tasks; R&D expenditures should be tilted as far as possible to the backbone enterprises that undertake the tasks, encourage and support well-established enterprises, 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 R&D and transformation in order to strive for greater breakthroughs. Owners are obliged and responsible to actively assist manufacturing companies in the research and development of nuclear power equipment. Owners must also strengthen the exchange of localization experience among their owners. We will jointly promote the localization of nuclear power equipment.