Design method of one-hundred-thousand-kilowatt-class reactor core

Abstract

The invention discloses a design method of a one-hundred-thousand-kilowatt-class reactor core. The one-hundred-thousand-kilowatt-class reactor core comprises 57 fuel assemblies; the height of an active section is 2-15cm; a refueling cycle is about 24 months; integrated burnable poisons are used; through reasonable mass percentages of a plurality of burnable poisons, reasonable partitioned usage ofa plurality of burnable poison rods, cooperative usage of a plurality of axial partitioning forms, combination of multiple fuel enrichment mixing and loading strategies, arrangement of a large amountof control rods and adoption of optimized grouping and rod withdrawing sequence, the reactivity control and the power flattening are achieved, so that the reactor core can meet the requirements on relevant safety analysis; a 1/3 reactor core shuffling strategy is used; the average discharging burnup of the fuel assemblies is improved; the flexibility of the small reactor in use is further improved; meanwhile, the fuel economy of the small reactor is improved; the design of the reactor core is more in line with the multipurpose orientation of the small reactor.

Description

technical field [0001] The invention relates to the technical field of nuclear design, in particular to a design method for a 100,000-kilowatt reactor core. Background technique [0002] The main task of reactor core design is to provide a nuclear reactor core that meets the overall design requirements from the perspective of nuclear reactor physics. [0003] In China, there are three types of nuclear fuel assemblies with different enrichments, and the fuel rods are axially partitioned. The authorized patent for the nuclear reactor core layout of a 100,000-kilowatt nuclear power plant (a nuclear reactor core layout for a nuclear power plant, patent publication number: CN103474101A ), the patent discloses the arrangement of fuels with different enrichment degrees, including 57 boxes of fuel assemblies, the thermal power of the core is about 300MW, and the electric power is about 100MW. [0004] There are public literature reports on the nuclear design of a 150MW electric pow...

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Problems solved by technology

[0005] Although the above-mentioned existing technologies at home and abroad have their own advantages and characteristics, they have not been fully integrated in terms of fuel econo

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