NDRC restarts demonstration of inland nuclear power: 13th Five-Year Plan likely to restart
Source: Daily Economic News Date: 2015-03-24
The National Development and Reform Commission has been conducting a comprehensive demonstration of whether to restart the construction of inland nuclear power plants during the "Thirteenth Five-Year Plan" period. The final conclusions have not yet been released. However, relevant sources told reporters that it is expected to be clarified in the energy "Thirteenth Five-Year Plan".
After the restart of coastal nuclear power, inland nuclear power was once again on the agenda. The reporter learned from multiple nuclear power sources on March 19 that the National Development and Reform Commission has been conducting a comprehensive demonstration of whether to restart the construction of inland nuclear power plants during the "Thirteenth Five-Year Plan" period. The final conclusions have not yet been released. However, relevant sources told reporters that it is expected to be clarified in the energy "Thirteenth Five-Year Plan".
The reporter learned that the issue of inland nuclear power construction has been under discussion since December last year. The National Development and Reform Commission also commissioned the Chinese Academy of Engineering to convene top domestic experts for demonstration. "The arguments at different levels have been arguing for a long time from bottom to top," a nuclear power source told reporters. In fact, recent discussions about inland nuclear power are one after another.
"13th Five-Year Plan" is likely to restart
On March 10, the article "The Risks of Developing Nuclear Power Safety in the Three Provinces of Hunan, Hubei, and Jiangxi must not be underestimated" co-authored by He Yan, an academician of the Chinese Academy of Sciences, and Wang Yinan, a researcher at the Development Research Center of the State Council, which have been circulating in the industry and caused heated discussions.
The article starts from "the site conditions of the Hunan, Hubei and Jiangxi nuclear power plants are very different from the inland European and American nuclear power", "AP1000 technology is not the highest international safety standard", "the accident of a nuclear power plant will cause a fatal blow to the Yangtze River Basin", "the urgent task is to modify and upgrade nuclear safety as soon as possible" Regulations and other four aspects point out that "two lakes and one river" (three nuclear power plants in Taohuajiang, Hunan, Xianning, Hubei, and Pengze, Jiangxi), whether it is the site selection of the power station or the technology used, there are some key factors in its safety issues that need to be further studied. , Prudent decision-making, and are located in the sensitive Yangtze River basin, the security risks should not be underestimated.
Shortly thereafter, Chen Zhanghua, director of the Office of the Expert Committee of the State Nuclear Power Technology Corporation, wrote a response, clarifying seven aspects of the nuclear power AP1000 design control document. The article points out that the proposed CAP1000 design for the three nuclear power plants of "two lakes and one river" is of the same safety level as the four AP1000 nuclear power plants under construction in the United States, and there is no essential difference, which meets the highest national safety standards.
Some people in the industry directly cried, "It is becoming more and more difficult to select nuclear power plants along the coast, and inland nuclear power is imperative." However, a source of nuclear power equipment frankly stated that the construction of inland nuclear power has higher environmental requirements, requires water, and the wind speed must reach a certain speed. The period of no wind during the year cannot be too long. In addition, there are large hidden costs related to the disposal of nuclear materials and the subsequent processing of nuclear power plants, such as the later dismantling of nuclear power plant equipment. Many waste materials have to be buried somewhere and can never be reused.
"If mid- to long-term planning is maintained, inland nuclear power is imperative." Another nuclear power source told reporters.
Century Securities pointed out in its research report that according to the nuclear power construction planning target, by 2020, China ’s nuclear power installed capacity will reach 58 million kilowatts and the capacity under construction will reach 30 million kilowatts. As of the end of 2014, China's units in operation and under construction Less than 50 million kilowatts. To meet the planning target, it is estimated that the new construction and installed capacity will be around 39 million kilowatts between 2015 and 2020, and the average annual new construction and installed capacity will be about 6.5 million kilowatts in the next 6 years.
The aforementioned nuclear power sources admitted that the Taohuajiang Nuclear Power Plant has already had a large amount of initial investment and cannot be dragged on. It is intended to be used as an inland nuclear power demonstration site or it will be the first inland nuclear power plant to be restarted in China, but it is subject to Sanmenhai. The nuclear power plant construction is delayed, and it is expected to be considered after the AP1000 project is clear. "It is estimated that there will be some changes after the end of the main pump durability test at the end of May?"
He believes that the possibility of restarting inland nuclear power during the "Thirteenth Five-Year Plan" period is still very high, otherwise the previous medium- and long-term planning will be in vain. "Academician He Zuo is a clear opposition, and his point of view is still the previous point of view. This type of argument is most effective The way is open debate. "
The main line of nuclear power technology is not smooth
In an interview with reporters, many people in the industry stated that inland nuclear power cannot be restarted at present. In addition to safety and security considerations, they are still waiting for the AP1000 technical problem to be resolved. At present, the main obstacle to domestic nuclear power is the difficulty in choosing the technical route. To some difficulties, it is currently impossible to follow the quantitative promotion originally planned.
In 2003, China made four decisions, including the introduction of the Westinghouse AP1000 technology, cooperating in the construction of 4 independent units of independent projects, independent innovation based on digestion and absorption of imported technology, and the establishment of a national nuclear power technology company; September 2014, which lasted 17 months The review of the CAP1400 demonstration project (that is, Shandong Rongcheng Unit) is completed, which is in line with the safety goals of the “13th Five-Year Plan” for new nuclear power plants proposed in China ’s nuclear safety plan. AP1000 and its improved series models are the mainstream models for China ’s third-generation nuclear power construction The main line.
The above nuclear power sources have stated that currently only the three generations of domestic nuclear power technology can be used: AP1000, CAP1400, and Hualong One. AP1000 cannot be mass-produced, and Hualong One and CAP1400 require the first demonstration.
Guangzheng Hang Seng previously released a research report that pointed out that AP1000 uses a “subtraction” scheme to simplify system design. Compared with the second generation, the core of AP1000 technology is the use of “passive” security systems. AC power sources and emergency generators can drive the safety systems of nuclear power plants using only natural phenomena such as earth's gravity and material gravity.
However, various problems with the current AP1000 passive system have made the advancement of China's nuclear power line unsuccessful. For example, design development and equipment development are not carried out simultaneously, and the shielded main pump and blast valve required by non-active technology have great manufacturing difficulties. AP1000 design is not solidified and standardized. There are often shutdowns and rework in the construction process. AP1000 has not yet Mature commercial transportation, safety review time is long, technological development and progress is a process, and engineering projects are needed to promote, evaluate, improve and optimize.
In addition, the main pump of AP1000 is a canned pump. It was developed by the American Electrical Machinery Company (EMD) independently for the main pump of AP1000. However, the quality control of the main pump caused delays in delivery. The unit was originally scheduled to generate electricity in 2013. Grid-connected power generation will be postponed to the end of 2015.