China News Service, Changjiang, Hainan, October 24 (Gao Yaofeng, Liu Xuan, Zhao Jintao, Chen Yong) The world's first land-based commercial modular small pile Linglong No. 1 steel containment bottom head was completed ahead of schedule in Changjiang, Hainan on the 24th.
This is an important milestone in the construction of the Hainan Changjiang multi-purpose modular small-scale reactor technology demonstration project, laying a solid foundation for the subsequent construction of the main structure of the reactor plant.
The containment is an important part of the nuclear power plant reactor building and a key nuclear safety barrier. It is structurally composed of three parts: the top head, the cylinder and the bottom head.
The bottom head is located between the internal structure foundation and the integral raft foundation, supports the steel containment shell, and transmits various loads and functions of the steel containment shell and its supporting items to the integral raft foundation.
Linglong No. 1 is a multi-functional modular small-scale pressurized water reactor type independently researched and developed by China National Nuclear Corporation for more than ten years and has independent intellectual property rights. It is another major achievement of independent innovation after the third-generation nuclear power Hualong No. 1 of China National Nuclear Corporation.
Different from traditional nuclear power technology, modular small reactor technology has the characteristics of miniaturization, modularization, integration, and passive. It has high safety, short construction period, and flexible deployment. It can be used as a clean distributed energy source and can meet power supply requirements. Various applications such as seawater desalination, district heating/cooling, and industrial heating.
The Hainan Changjiang Multi-purpose Modular Small Reactor Technology Demonstration Project (Small Reactor Demonstration Project) started construction at the Hainan Nuclear Power Base in July 2021. This is the world's first land-based commercial modular small reactor to start construction.
It is estimated that the annual power generation capacity can reach 1 billion kwh after completion, meeting the living needs of 526,000 households.
Its promotion and application can promote energy conservation and emission reduction, and will strongly promote the safe development and independent innovation of nuclear power.
As China's southernmost nuclear power base built by China National Nuclear Corporation in Hainan, a number of power projects such as Changjiang Nuclear Power have been completed and put into operation, with a cumulative power generation of more than 47 billion kWh, providing strong support for Hainan's power grid and energy security.
Up to now, the two units of the Hainan Nuclear Power Phase I project have maintained full power operation and will continue to provide green energy guarantees for the construction of the Hainan Free Trade Port and the National Ecological Civilization Pilot Zone.
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