The front end of the hottest nuclear power industr

2022-08-18
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The nuclear power industry can't digest the front-end and deal with the back-end.

the latest statistics show that China currently has 34 nuclear power units in operation, second only to the United States, France and Russia. The latest statistics show that China currently has 34 nuclear power units in operation, second only to the United States, France and Russia. In terms of total installed capacity, as of July this year, the total installed capacity of nuclear power in mainland China was more than 55 million kilowatts, also ranking fourth in the world. In terms of quantity and capacity, China has become the fourth largest nuclear power country in the world. However, behind such bright data, China's nuclear power industry also has two major hidden worries, which can't be digested by the front end and processed by the back end

hidden troubles in the front end: the problem of nuclear power consumption remains to be solved

the domestic nuclear power operation in the first half of this year released by the China Nuclear Energy Industry Association shows that although the nuclear power generation increased by 26.58% over the same period in 2015, and the cumulative power supply also increased by 26.02% over the same period in 2015, the average utilization hours of nuclear power equipment and the average utilization rate of nuclear power equipment in the first half of this year were only 3335.35 hours and 76.36% respectively, Compared with last year, it decreased by 183.8 hours and 4.74 percentage points respectively

the problem of nuclear power consumption has become one of the main factors restricting the development of domestic nuclear power at this stage, especially in the northeast. The serious power failure phenomenon in the three northeastern provinces since 2014 has made nuclear power consumption into 6. The stop button can only be effective when the lifting frame rises, which is the most thorny problem faced by the development of nuclear power in Northeast China

according to the data of China Electricity Council, in 2015, the average utilization hours of power generation equipment of 6000 kW and above power plants in Heilongjiang, Jilin and Liaoning provinces were 3519 hours, 2742 hours and 3822 hours respectively, which fell sharply, and were all lower than the national average utilization hours of power generation equipment of 3969 hours. In terms of nuclear power, the average utilization hours of Liaoning Nuclear Power Equipment in 2015 was 5815 hours, far lower than the 7350 hours nationwide. In addition to Liaoning Hongyanhe Nuclear Power Plant, the graphene fabric refers to the effective combination station of graphene materials and ordinary textiles. The existing and proposed nuclear power projects in Northeast China include xudabao nuclear power plant and Jilin Jingyu nuclear power plant. Individual units will also be put into use soon, which will further aggravate the nuclear power consumption pressure in Northeast China

turn your attention from the northeast to the south, and the nuclear power consumption in Fujian and Hainan provinces is no less. One and a half years after the commercial operation of Fuqing nuclear power unit 1, due to insufficient consumption, the average utilization rate of equipment in the first quarter of this year was only 54.79%. The average utilization rate of Fujian Ningde nuclear power unit 1 is even 52.77%. During the Spring Festival, Hainan Changjiang nuclear power unit 1 was operated at reduced power according to the power requirements. It was shut down for minor maintenance from late February to March, and the average utilization rate of the equipment was 57.06%

He Yu, chairman of CGNPC, said bluntly during the national two sessions this year that for every 1000 hours of decline in the average utilization hours of nuclear power, a megawatt unit will generate 1billion kwh less. According to the 2020 and 2030 planning goals for nuclear power development, clean power generation will be reduced by 58billion kWh and 150billion kwh respectively, which is equivalent to 8 and 20 nuclear power units being completely shut down throughout the year

back end worries: insufficient spent fuel processing capacity

on July 26, Wang Yiren, deputy director of the Bureau of science, technology and industry for national defense, went to Lianyungang to investigate the proposed site of the Sino French cooperative nuclear cycle project, which attracted attention, which confirmed from one side that China's current lack of nuclear fuel back-end processing capacity, that is, the problem of insufficient spent fuel processing capacity, urgently needs to be solved

spent fuel is the nuclear fuel that has been exposed to radiation and used. It is usually produced by the nuclear reactor of the nuclear power plant. The uranium content of this fuel is reduced and it cannot continue to maintain the nuclear reaction. Spent nuclear fuel contains a large number of radioactive elements, so it is radioactive. If it is not properly handled, it will seriously affect the environment and the health of people exposed to it

for China, with the highlight of energy problems, the nuclear power industry has developed rapidly, and the amount of spent fuel produced after the operation of nuclear power has increased. Xuhaiyu, Deputy Secretary General of the China Nuclear Energy Industry Association, explained in detail the current and future gap in domestic spent fuel treatment. By 2020, if China can achieve the target of 58 million KW nuclear power installation, about 1500 tons of spent fuel will be generated every year, and the cumulative reserves will reach 10000 tons. After that, it will increase year by year. At that time, strong and sound spent fuel treatment technology and capacity will be required. However, at present, China's spent fuel processing capacity is insufficient. In the nuclear and radiation safety department of the Ministry of environmental protection, we should put aside our disputes in the future. Chai guohan, the chief engineer, previously revealed that at present, the spent fuel pool of Daya Bay nuclear power plant has been saturated, the spent fuel pool of Tianwan nuclear power plant is close to saturation, and the wet storage facilities of off reactor spent fuel that have been built have also been saturated

many nuclear power experts said that the construction of spent fuel treatment plants is imminent. However, whether it is independent technology or Sino French cooperation, the investment intensity of large spent fuel reprocessing plants is higher than that of ordinary nuclear power plants, the construction cycle is more than 10 years, and the investment is often hundreds of billions of yuan. Spent fuel treatment without technology is a burden, and ability is wealth. Li Yingfa, a former senior engineer of China Nuclear Power Research and Design Institute, said

Tang Zide, an expert of the expert committee of the former National Nuclear Power Technology Corporation, made a vivid metaphor for China's insufficient spent fuel processing capacity in an interview. He said that at present, most of the technologies and equipment for the storage, transportation and processing of spent fuel at the back end of China's nuclear power plants rely on imports, and can only handle a small part of the spent fuel generated every year, just like eating but not pulling. China's nuclear power industry lacks a perfect toilet

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