A Calculation Method of Uranium Consumption Rate of Nuclear Power Units

Abstract

The invention discloses a method for calculating the uranium consumption rate of a nuclear power unit. The method comprises the following steps: firstly, acquiring a fuel management scheme of the nuclear power unit, and the rated heat power and the rated electric power of the nuclear power unit, confirming combustion consumption gain to be calculated, of different fuel components inside a reactor core in fuel circulation according to the fuel management scheme, and the final combustion consumption of the fuel components when being unloaded, and finally calculating the power generation uranium consumption rate in the fuel circulation according to the combustion consumption gain, the final combustion consumption and the rated heat power and the rated electric power of the nuclear power unit. According to the power generation uranium consumption calculation method disclosed by the invention, the power generation uranium consumption rate and the power generation natural uranium consumption can be rapidly, easily and conveniently calculated by calculating the reactor core combustion consumption history and the initial enrichment degree of the fuel components in circulation according to the reactor core fuel management scheme and the main parameters of the nuclear power unit, a great amount of hypothesis items of a conventional calculation method are abandoned, input data are reduced, and the precision and the reliability of calculation are improved.

Description

technical field [0001] The invention belongs to the field of energy consumption calculation of pressurized water reactor nuclear power projects, and in particular relates to a calculation method of uranium consumption rate of nuclear power units. Background technique [0002] During the operation of a pressurized water reactor nuclear power plant, nuclear fuel is continuously consumed to generate thermal energy, which is then converted into electrical energy. At present, the nuclear fuel of PWR nuclear power plants is generally low-enrichment UO 2 , which is obtained by enriching and enriching natural uranium, which is a non-renewable primary energy source. In the process of generating electricity in nuclear power plants, the mechanism of heat production is UO 2 The fissile nuclides undergo fission reactions under the impact of slow neutrons. Therefore, in order to calculate the uranium resources that a nuclear power plant needs to consume per kilowatt-hour of electricity...

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Problems solved by technology

[0004] But it is very difficult to calculate the total electricity We generated in the balance cycle.

We is equal to the product of the electric power of the unit and the running time. Due to the fluctuation of the electric power of the unit, the running time is also affected by the refueling time and accident shutdown, so it cannot be given accurately.

[0005] In the absence of We data, it is impossible to accurately calculate the uranium consumption rate of the nuclear power plant under the balance cycle, and it is also impossible to carry out analysis work such as feasibility study and energy saving. Therefore, it is necessary to design a set of accurate and feasible balance cycle uranium consumption rate calculation method

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