【Major Equipment in the Chemical Engineering Sector】Successful domestic development of the drive mechanism for the main steam isolation valve in the CAP1400 nuclear power project, as part of a key national science and technology initiative
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Comply with the Work Safety Law! Take on the role of the primary responsible person! ---------------------------------------------- The past decade has been a period of rapid development for China’s chemical industry, marked by the emergence of many new processes, products, and equipment. China’s chemical processing equipment has also seen significant progress, which in turn has contributed to the swift development of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and greater use of domestic equipment. We welcome everyone to share their insights and discuss these topics together; let’s cheer for Made in China and support the development of chemical processing equipment! ------------------------------------------------------ In January 2022, at China Nuclear Suvalve Technology Industry Co., Ltd., the integrated test of the prototype of the CAP1400 main steam isolation valve actuation device, which was developed jointly by China National Nuclear Corporation and the Shanghai Nuclear Engineering Research and Design Institute, was successfully completed. This marked the successful localization of the development of the CAP1400 main steam isolation valve actuation device as part of a major national scientific and technological project.
The main steam isolation valve of the CAP1400 nuclear power unit is located on the main steam pipeline of the nuclear power plant; it serves to isolate the containment structure as well as the steam generator. The reliable operation of the drive mechanism for this valve is directly related to the safety of the nuclear power plant and the reliability of power generation, making it one of the key components in such plants. The drive mechanism for the main steam isolation valve in CAP1400 nuclear power units is highly complex in terms of technology, and its design, manufacturing, and testing present significant challenges. Currently, there is no mature experience in developing such mechanisms in China; purchasing foreign products would mean being dependent on foreign suppliers for a long time, which brings many negative consequences. Therefore, it is highly necessary to develop this equipment domestically in order to overcome the challenges posed by key technical bottlenecks and break free from dependence on foreign suppliers. The Ministry of Science and Technology has designated the development of the drive mechanism for the CAP1400 main steam isolation valve as a **major scientific and technological project. CNNC serves as the leading entity for this project, working together with Shanghai Nuclear Engineering Research and Design Institute Co., Ltd. to carry out the development efforts. The goal is to achieve the domestic production of the world’s largest drive mechanism for CAP1400 main steam isolation valves, and to conduct comprehensive verification tests through the development of test prototypes. Through research and development, China National Nuclear Corporation has mastered the core technology related to the drive systems for main steam isolation valves in large-scale, advanced pressurized water reactor nuclear power plants. It has thus developed CAP1400 main steam isolation valve drive systems with independent intellectual property rights, which meet the needs of China’s nuclear power development. Moreover, these systems will help break the foreign monopoly and enhance China’s competitiveness in the international market.
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Used for nuclear power plants, and can later be extended to the chemical and petrochemical industries