Visit the Hualong One Demonstration Project: A nuclear power "giant dragon" of Chinese descent
Source: Economic Daily. Date: 2016-06-30.
More than 10 years ago, Qiwei Mountain in the former Xue Village, southwest of Sanshan Town, Fuqing City, Fujian Province, was just a little-known barren hillside on the coast of the East China Sea. After ten years of construction and development, today, it has become a new nuclear power base with the mission of casting a "powerhouse of heavy power". As China ’s independent third-generation nuclear power technology "Hualong No. 1" demonstration project landed here, this unpretentious northern Fujian land has once again attracted worldwide attention.
China National Nuclear Corporation has been adhering to the concept of "China's nuclear industry's" rice bowl "should be in its own hands". The construction of the “Hualong No. 1” million-kilowatt nuclear power unit has made China a country with three independent generations of nuclear power technology after the United States, France, and Russia. China has since become one of the countries with advanced nuclear power technology, Qualification for three generations of nuclear power in the international market. "Hualong One" has also become a well-known "Chinese business card" in high-end manufacturing.
From "follow" to "and run"
The Fuqing nuclear power base was sweltering and humid after the rain. However, unfavorable weather could not stop the enthusiasm of the workers. In front of reporters, the tower cranes stand tall and the trenches are vertical and horizontal. The basic project of Unit 5 which is responsible for China's independent third-generation nuclear power technology "Hualong No. 1" demonstration project has already taken shape.
Shuttle between construction sites, the most noticeable is the dense, layered thick steel bars. "The mechanical connection sleeve resistant to large commercial aircraft impact is a unique mechanical connection technology for steel bars of 'Hualong One', which has higher requirements than ordinary sleeves. On the premise of meeting the technical requirements of ordinary sleeves, it is also necessary to meet the transient Load impact test. "Chen Guocai, deputy general manager of China Nuclear Group Fuqing Nuclear Power, pointed to the outer wall of the nuclear island plant.
The collision avoidance performance of the aircraft is just the tip of the iceberg of Hualong One's many innovative technologies. "Technological innovation is our core competitiveness." Jing Chunning, deputy director of the Design Institute of China Nuclear Group Nuclear Power Engineering Company, told the Economic Daily reporter that "Hualong No. 1" is in calculation analysis software, reactor core design, fuel technology, active and non-critical Major breakthroughs have been made in all aspects of active safety technology, and we have truly mastered the initiative in future competition and development.
Jing Chunning told reporters that "Hualong No. 1" has three main characteristics: The first major characteristic is the "177 core", which increases the core's rated power while reducing the average line power density, which not only increases the power generation capacity of nuclear power plants but also increases Safety margin for nuclear power operation. The second major feature is that fuel assemblies have completely independent intellectual property rights, which is critical for China ’s nuclear power to “go global”. The third major feature is the localization of equipment, which can make full use of China's existing nuclear power equipment manufacturing capabilities, promote the transformation and upgrading of industrial clusters, and promote the development of domestic nuclear power equipment manufacturing.
Plutonium fuel technology is one of the core technologies of the reactor, and continuous upgrading of nuclear fuel technology is an effective means to improve the safety, reliability and economy of nuclear power plants. Previously, this technology has been monopolized by foreign countries for a long time, and it can only be processed according to plans in the country. Even if there is improvement, the consent of the technology-owning country must be obtained. This has also become a thorn stuck in the throat of our nuclear power people.
In order to change this passive situation, CNNC launched a key science and technology project “Pressure Water Reactor Fuel Design and Manufacturing Technology Research” to develop CF2 fuel from 12 months to CF3 fuel for 18 months. Solve export restrictions. At present, China's third-generation nuclear power "Hualong No. 1" nuclear fuel element, the CF series fuel assembly with independent intellectual property rights, has made breakthrough progress. It is expected that from 2017, the CF series will gradually achieve industrial applications. The test results show that the results can meet the fuel needs of the "Hualong No. 1" project started at home and abroad, and the performance is comparable to international advanced fuel assemblies.
"We submitted a full report of up to 5,000 pages." Jing Chunning recalled his experience when the project was submitted for review. The 2014 review results of the International Atomic Energy Agency's Safety Review Board believed that China's ACP1000 (Hualong No. 1) was in line with the contemporary world. The most advanced and rigorous security technology requires, and is completely feasible. "It can be said that China's nuclear power has achieved from 'following' to 'running concurrently.'"
Opening up the "Synergy era" of design
In addition to the innovative catch-up of hardware technology, the breakthrough of "Hualong One" in soft power is also called "leapfrogging".
Jing Chunning said that "Hualong No. 1" is a very complicated system project. The design process requires multi-professional and collaborative design among multiple units. The interface is complex, the number of participants is large, and the coordination and management is extremely difficult. Its accuracy and effectiveness The nature directly affects the quality and safety of nuclear power plants.
In order to solve this problem, in the design of "Hualong One", China Nuclear Group combined the concept of "Internet +", combined nuclear power design, application software integration with the Internet and other technologies to establish a comprehensive offsite comprehensive collaborative design platform. At the same time, multiple design units are connected through the network, and various terminal devices are used to carry out collaborative design work on the same platform.
The currently completed design collaboration platform includes, in addition to China Nuclear Power Engineering Co., Ltd. and China Nuclear Power Research and Design Institute, the four institutes, and also connects with nuclear power owners, project management, engineering procurement, equipment manufacturing plants, and civil and installation construction units. Provide related design data support. There are about 20 connected units. These units are located in Beijing, Shanghai, Chengdu, Xi'an, Shijiazhuang, Zhengzhou and other places. The number of terminals for the collaborative design platform has reached 500 and can be expanded as needed. In addition, the collaborative platform also integrates multiple functions such as factory 3D design, cable laying, and mechanical analysis calculations. Based on the collaborative design platform, a digital 3D design model of Hualong No. 1 nuclear power plant and a complete database have been established, including more than 50,000 sets of equipment, 165 kilometers of pipelines, and 2,200 kilometers of cables. This data can also be used for equipment procurement and processing.
"This is equivalent to building another 'digital nuclear power plant'." Jing Chunning said that the "Hualong No. 1" design platform has improved the level of nuclear power design, equipment manufacturing, and engineering construction, ensuring the advanced nature and safety of "Hualong No. 1" Performance, economy and construction quality. While fully drawing on advanced international experience, the nuclear power design and information technology have been deeply integrated. The Internet, data encryption, simulation, and virtual reality technologies have been fully utilized to solve problems such as data transfer and integration between different platforms, and have reached the international level. Advanced level.
In addition, China ’s first independent nuclear power software package and integrated software integration platform (NESTOR) was officially released at the end of last year. Its calculation accuracy has reached the international advanced level, and it is on par with the nuclear power countries such as the United States and France, and has become the world's first camp. Its successful release laid the foundation for the development of internationally advanced software in the future and played a key role in the implementation of nuclear power's "going out" strategy.
"Julong" goes overseas to expand global market
While the domestic demonstration project is advancing rapidly, on August 20, 2015, in Karachi, Pakistan ’s largest city thousands of kilometers away, the 2nd nuclear power project using “Hualong No. 1” technology also achieved the first pot of nuclear island pouring. Concrete (FCD), which indicates that China's independent nuclear power technology has made substantial progress in overseas markets.
In fact, at a series of important conferences, China has repeatedly emphasized the need to give play to the leading role of nuclear power technology exports and create new comparative and competitive advantages for our economy. National leaders also repeatedly pushed China ’s nuclear power to "go global" during their visits. "Going global" for nuclear power has become a national strategy. Thanks to the promotion of top-level design, coupled with obvious technical and economic advantages, breakthroughs have been made in the development of Hualong One overseas projects.
2 In February 2015, the Chinese and Argentine governments signed the Agreement on Cooperative Construction of Pressurized Water Reactor Nuclear Power Plants in Argentina, marking the successful export of the “Hualong One” autonomous third-generation nuclear power technology to Latin America. On this basis, in November 2015, China National Nuclear Corporation and Argentine Nuclear Power Company signed a framework contract for a pressurized water reactor project. At present, the two parties are maintaining close working relations and actively promoting the early construction of the Hualong No. 1 PWR project. In addition, China has also reached cooperation intentions with Britain, Sudan, Brazil, Egypt, Ghana, Malaysia and other countries.
"Compared with advanced nuclear power countries, 'Hualong-1' has many competitive advantages. It adopts a gradual technological development path, integrates many advanced technical features on the basis of mature technology, and guarantees mature reliability. Significantly improved the safety of the power plant and balanced the economy. "Li Zhuoqun, deputy director of the Nuclear Power Division of China Nuclear Group, revealed that" Hualong One "innovatively adopted the" safety design concept combining active and passive power "and set up a perfect The serious accident prevention and mitigation measures have fully absorbed feedback from the Fukushima nuclear accident experience. It can meet the requirements of the latest national and international nuclear safety regulations and standards, meet or exceed the requirements of international third-generation nuclear power users in terms of safety, technology and economic indicators, and the construction cost is significantly lower than the third-generation nuclear power technology of advanced nuclear power countries.
At the same time, the construction of the "Hualong One" demonstration project will also support and promote the implementation of the national "Belt and Road" strategy and China's nuclear power "Go Global" strategy. Fuqing Nuclear Power Units 5 and 6 The smooth construction of the project will bring a huge demonstration effect for the Chinese nuclear power industry to expand overseas markets.
According to estimates, the export of nuclear power units has a very obvious economic effect. The export price of a unit is about 30 billion yuan, plus the cost of fuel and services, the estimated price is up to 100 billion yuan. In addition, every nuclear power unit that is built will involve hundreds of supporting enterprises, large and small, which will have a significant effect on boosting the mass production of nuclear power equipment in China.
"The start of 'Hualong No. 1' marked China's entry into the world's first nuclear power camp. If we compare the previous nuclear power export to borrowing ships to go to sea, today, we have the ability to build ships and go to sea." Qian Zhimin, general manager of China Nuclear Group, is confident Say it all. (Economic Daily News Wang Yichen)