On May 9th, according to the official public account of "CNNC Group," recently, the domestic first nuclear power plant regulator pilot-operated safety valve jointly developed by CNNC China Nuclear Power Research and Design Institute and CNNC Su Valve Technology Industry Co., Ltd. has successfully completed all evaluation tests.
This marks China's complete mastery of the key technology of this nuclear valve, breaking the monopoly, possessing the capability to independently supply nuclear power units, and becoming one of the few countries in the world that master this technology.
This is of great significance in enhancing the autonomy of China's nuclear power projects and accelerating the promotion of China's nuclear power projects internationally.
According to the introduction, the pilot-operated safety valve for the regulator of nuclear power plants is used in the primary loop system of the reactor, playing a crucial role in the safe operation of nuclear power plants. It is one of the highest safety-rated and most important valves in nuclear power plants, and is also recognized as one of the domestically produced valves with the highest level of difficulty in the nuclear valve industry.
Previously, most of the pilot-operated safety valves for regulators in operation and under construction in domestic nuclear power plants relied on imports, greatly limiting the high-quality development of China's nuclear power industry.
In 2019, China National Nuclear Corporation coordinated multiple units to develop the first domestic demonstration prototype of the pilot-operated safety valve for the regulator.
Following a review by industry experts organized by the China Nuclear Energy Industry Association, it was deemed that this pilot-operated safety valve "possesses patented technology with complete independent intellectual property rights."
By the end of 2022, the device entered the stage of analog component identification tests, completing a series of identification test work one after another, thoroughly testing the key technologies of pilot-type safety valve design and manufacturing.
At the same time, the breakthrough and mastery of multiple advanced test technologies during the testing period have further enhanced the identification capabilities of Chinese nuclear-grade valves.
