China's third-generation nuclear power technology CAP1400 has been successfully developed

Recently, with the support of major national science and technology projects, through the joint efforts of more than 200 enterprises and institutions, more than 20,000 scientific researchers and up to nine years, China's third-generation nuclear power technology CAP1400 with independent intellectual property rights and independent export rights has been successfully
developed.

The third-generation nuclear power CAP1400 technology is a major scientific and technological achievement
that China has introduced and digested the third-generation nuclear power AP1000 technology of the United States, applied the passive design concept, and successfully achieved re-innovation through major special scientific research.
In 2008, the CAP1400 project led by the State Nuclear Power Technology Corporation was listed as one of the 16 major national science and technology projects identified in the Outline of
the National Medium and Long-term Science and Technology Development Plan.

In the past nine years, under the leadership of the National Energy Administration and the implementation of the State Nuclear Power, more than 150 state-owned enterprises and private enterprises, including Shanghai Electric, China First Heavy, Dongfang Electric, CNNC, CGNPC, CNNC, Sany Heavy Industry, Baoyin, Shenyang Yuanda, Jiangsu Haishi, etc.
Tsinghua University, Shanghai Jiao Tong University, Xi'an Jiaotong University, Zhejiang University and more than 10 well-known domestic universities; More than 30 research institutes including China Nuclear Power Research and Design Institute, China Academy of Engineering Physics, CNNC Wuhan Nuclear Power Operation Technology Co.
, Ltd.
, China Institute of Atomic Energy Science, and nearly 20,000 scientific research and technical personnel have participated in the research and development of
CAP1400.

Up to now, a total of 2,894 intellectual property rights have been formed in this major science and technology project, which has comprehensively improved China's national capabilities
in nuclear power design, testing, safety review, collaborative innovation system, equipment manufacturing and so on.
In the process of research and development, based on the national mechanism, guiding the full use and sharing of resources, many government-industry-university-research cooperation platforms have been built, and scientific research cooperation has been promoted, and scientific research cooperation, technology integration and innovation agglomeration
have been promoted.

According to Zheng Mingguang, chief designer of CAP1400 and president of Shanghai Nuclear Engineering Research and Design Institute, the overall design idea of CAP1400 is: improve the capacity level of the power plant, optimize the overall parameters of the power plant, balance the design of the power plant, adopt a new plant-wide safety design, engineering design and key equipment design, comprehensively promote design autonomy and equipment localization, actively respond to domestic and foreign technical policies after the Fukushima incident, achieve the highest safety goals and meet the strictest environmental emission requirements
.

At present, the construction design of CAP1400 demonstration project has been basically completed
.
It has successfully broken through major key core technologies
such as standard design, model design, test verification, probabilistic safety evaluation (PSA) of nuclear power plants, digestion and absorption of main equipment, development of oversized forgings for key equipment, containment manufacturing, and construction and installation of nuclear islands.
It has realized the autonomy of China's third-generation nuclear power technology research and development, engineering design, equipment manufacturing, and test verification, and realized the autonomy of advanced software platform and advanced nuclear fuel
.

Relying on major national science and technology projects, CAP1400 not only carries out design autonomy, but also begins to localize equipment
.
The localization rate of equipment has now reached 85%.

Reactor pressure vessels, steam generators, large forgings, main pipelines, steel containments, core-grade zirconium, steam generators, shielded motor main pumps, burst valves, injection boxes, core water replenishment tanks and other key equipment and materials are all developed and manufactured by more than two domestic manufacturers
.
It can not only control engineering risks, but also promote benign market-oriented competition, and comprehensively improve the manufacturing level of
China's nuclear power industry.

Since 2013, the National Nuclear Safety Administration has organized nearly 200 domestic authoritative experts to conduct a joint review of the safety of CAP1400, and through a comprehensive review of more than 5,000 issues in six major topics in 17 months, it is finally believed that: CAP1400 aims to "actually eliminate the possibility of large-scale radioactive material release by design", and through a series of computational analysis and test verification, a large number of design improvements to improve safety have been carried out, meeting the latest international and domestic safety standards, and meeting China's "13th Five-Year Plan" Nuclear power safety objectives
.