Method for cycle using multi-stack combined nuclear fuel

Abstract

The invention relates to a nuclear power technology, in particular to a multi-reactor combined nuclear fuel cycle utilization method which is applied to the management design of first core fuel for a nuclear plant. A plurality of reactors with fuel elements which can be interchanged are combined to operate the cycle utilization of nuclear fuel, parts of fuel elements are used in a plurality of reactors in sequence. The invention has the advantages that the utilization ratio of the fuel for the newly-built the nuclear power station at the earlier stage can be improved to the level during the equilibrium cycle at the later stage, and the fuel purchasing cost and the post treatment cost of the fuel are saved; the long cycle refueling of a refueling shutdown reactor type can be realized in the first core. The method also can be used for the optimization of the management design of the reactor core fuel among operating reactors, thereby improving the fuel utilization ratio. The method of the invention is suitable for both the refueling shutdown reactor type and a continuous refueling reactor type and suitable for a pressurized water reactor, a boiling water reactor, a heavy water reactor and a high temperature gas cooled reactor.

Description

technical field [0001] The invention relates to nuclear power technology, in particular to a multi-stack joint nuclear fuel cycle utilization method applied in the management design of nuclear power plant core fuel. Background technique [0002] Nuclear power generation is a new type of energy. Since the first nuclear power plant was built in the 1950s, people have paid more and more attention to it. According to statistics, by the end of 2002, about 441 nuclear power plants had been built in more than 30 countries and regions in the world, with a generating capacity of about 360 million kilowatts. About 40 are under construction, and about 60 are planned to be built, with a total installed capacity of nearly 500 million kilowatts, accounting for about 20% of the world's power generation at that time. A nuclear reactor usually uses uranium or plutonium as nuclear fuel, a controllable chain fission reaction, and a special atomic boiler that continuously brings out the fissi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-reactor joint nuclear fuel recycling method, which can solve the problems of uneconomical fuel utilization in the early stage of newly built nuclear power plants and the difficulty in realizing long-term refueling in the first reactor core of the shutdown refueling reactor type