According to the official information of the International Organization for Standardization (ISO), the international standard "Design criteria for the thermal insulation of reactor coolant system main equipments and piping of" is organized by China National Nuclear Corporation, the China Nuclear Power Research and Design Institute, and the Institute of Nuclear Industry Standardization. "PWR nuclear power plants" (standard number is ISO 23466: 2020) was officially released on October 26, 2020! This standard is my country's first international nuclear power standard and also my country's first ISO standard in the nuclear field. The release of this standard marks the further international recognition of my country's independent nuclear power technology. It is an important layout for China National Nuclear Corporation to enhance its competitiveness in the field of nuclear power in the world. It is of great significance to supporting the "Going Global" of Hualong One and enhancing my country's nuclear power international influence.
As an important equipment for the nuclear island of the PWR nuclear power plant, the insulation layer undertakes a series of important functions such as reducing the heat loss of the reactor and the primary circuit, alleviating severe accident conditions, reducing the radiation level, and improving the operating environment. It is closely related to the safety of nuclear power plants. During the research and development of the third-generation nuclear power reactor pressure vessel and the pipeline insulation of the primary circuit system equipment, China Nuclear Power Research and Design Institute has carried out a large number of scientific researches, achieved a number of innovative designs, obtained a number of patented technologies, and related results reached the world's leading level. . The results of this standard have been successfully applied to the design of Hualong No. 1 project.
"Design criteria for the thermal insulation of reactor coolant system main equipments and piping of PWR nuclear power plants" (ISO 23466) was transformed by the China National Nuclear Corporation Hualong No. 1 Standard. The drafting process fully condensed my country’s third-generation nuclear power technology and engineering experience, filling There is no gap in the available international standards in the field of nuclear power insulation design. The standard was formally approved on July 11, 2018. It lasted more than two years. After multiple rounds of high-demand international review and voting by ISO, the final approval rate of each round of international votes exceeded 90%, leading the ISO official progress by 9 Officially released this month.
The high-quality and high-efficiency release of this standard is a manifestation of China National Nuclear Corporation’s implementation of the national innovation-driven development strategy. It is the result of China National Nuclear Corporation’s great emphasis on international standardization work, top-level design, and overall planning. It is also the leading organization, China Nuclear Power Research and Design Institute And the demonstration of the strong technical strength of the Nuclear Industry Standardization Institute has contributed to the realization of the "one body, two wings and three high" goals of the Nuclear Power Institute in the new era and the realization of the "Trinity" development strategy of China National Nuclear Corporation.