Where is Hualong No. 1 powerful to appreciate the ten major innovative achievements

On January 30, 2021, the world's first demonstration project of Hualong No.
1, Fuqing Nuclear Power Unit 5, was officially put into commercial operation
.
China has become another country
with independent third-generation nuclear power technology after the United States, France, Russia, etc.
What is the power of Hualong One? On February 1, CNNC's official website released the top ten innovative achievements
of Hualong No.
1.

1.
"Hualong No.
1" has complete independent intellectual property rights, forming a large number of scientific and technological innovation technologies represented by 177 cores, dynamic plus passive safety design features, including 716 domestic patents, 65 international patents, more than 200 overseas trademarks, 125 software copyrights, more than 1500 core scientific and technological reports, and a large number of domestic and foreign scientific and technological journal papers
.

Second, the safety design characteristics of active plus passive

"Hualong No.
1" ingeniously adopts the design concept of active plus passive safety, which not only retains the mature and efficient characteristics of the active system, but also makes full use of the inherent characteristics of the passive system based on natural circulation, gravity and no power supply, and improves the advanced and reliable
safety measures.
The dynamic and passive safety design provides diversified safety means to ensure core cooling, pressure vessel integrity and safety vessel integrity, strengthens the defense in depth of nuclear power plants, and significantly improves the safety
of nuclear power plants.

3.
Innovative nuclear island and containment design

The design of the "Hualong No.
1" nuclear island comprehensively improves the seismic resistance and adopts a single-reactor layout design, which is conducive to reducing the interaction between units and improving the flexibility
of nuclear power site selection.
The reactor building is designed with a double-layer containment vessel to provide an additional barrier against radioactive material containment and strengthen the reactor's resilience to external disasters
.
The exterior wall of the key plant building on the nuclear island adopts a large-aircraft impact-resistant design, which can ensure the safety of
the reactor in the event of a hypothetical large-aircraft collision accident.

Fourth, the core equipment is autonomous

CNNC fully implements the cooperation model of "small core, large collaboration", through joint research and development with domestic manufacturing enterprises, it has broken through the localization of 411 core equipment, reactor pressure vessels, steam generators and other core equipment have been made in China, and the localization rate of the first reactor equipment has reached 88%, ensuring Hualong export independent and controllable, and also driving the transformation and upgrading
of high-end equipment manufacturing industry and industrial clusters.

5.
Self-developed CF3 fuel assembly

CNNC successfully developed CF3 fuel assembly technology through "Hualong No.
1", truly realizing the Chinese core
of nuclear reactors.
The fuel cladding adopts N36 advanced zirconium alloy with independent intellectual property rights, which has excellent thermal and hydraulic properties and mechanical properties
.
CF3 fuel assemblies fully meet the high fuel consumption requirements of 18 months or even longer refueling cycle, meet the 0.
3g seismic requirements, and can also be compatible with the core structure
of domestic second-generation improved nuclear power units.

6.
Innovative project management system for EPC projects

In terms of EPC management mode, CNNC innovatively built a four-sided and one-pillar nuclear power project management system with the project management platform as the core and the four plate platforms as the support of design, procurement, construction and commissioning, supporting the business operation and cross-sector collaboration of each sector, supporting data exchange and collaboration between design, equipment and construction suppliers, effectively improving management efficiency, ensuring project progress, and creating the world's best performance
in 68.
7 months of the construction of the first reactor project of the third generation of nuclear power.

7.
Create a digital Hualong

In the process of building the first reactor of "Hualong No.
1", CNNC focused on the construction of digital nuclear power, supported by structured engineering data and high-precision three-dimensional models, made every effort to build the "Hualong No.
1" digital nuclear power plant, established the first enterprise standard for digital power station delivery, realized remote collaborative design, and systematically improved design and construction efficiency
.
Digital Hualong and physical Hualong are delivered synchronously, which can be used for power plant operation simulation services and simulation verification of key systems, and realize data sharing
throughout the life cycle of the power plant.

8.
Innovative construction and installation technology

The construction process of "Hualong No.
1" domestic and foreign demonstration project adopts a large number of innovative technologies, such as nuclear island opening method construction, steel lining modular construction, stainless steel first sticking method and other construction technologies, which further expands the application of automatic welding machine technology during the installation process, significantly improves the safety and convenience of the construction and installation process, saves the project construction period, and ensures the timely delivery
of the project.

9.
The first autonomous nuclear power software package NESTOR

By launching the key science and technology project of nuclear power software autonomy, CNNC has successfully developed and released NESTOR, a nuclear power design and analysis software package with complete independent intellectual property rights in China, covering 7 professional fields, covering key engineering links such as engineering design, safety analysis and nuclear power plant operation support, including 131 professional software, and has obtained 112 software copyrights
.
The successful research and development of NESTOR solves the software intellectual property obstacles faced by nuclear power exports, and is the core embodiment
of China's independent innovation ability in nuclear power technology.

10.
Build a complete and independent nuclear power standard system

In the process of R&D, design and construction of "Hualong No.
1", a complete standard system of "Hualong No.
1" covering the whole cycle of nuclear power plants has been established, and the current standard system of pressurized water reactor nuclear power that is "general as the main and special as the supplement" has been optimized and improved
.
Hualong model standard system covers a total of 2360 standards, including 615 standards formulated and revised, including 3 international standards, 28 national standards, 308 industry standards, and 276 enterprise standards, and has formed dozens of standard system tables and standard reference books, laying the foundation for
the mature application of third-generation nuclear power technology.