High-burnup fast neutron reactor metal fuel

A metal fuel and fast neutron reactor technology, applied in the direction of reactor fuel material, greenhouse gas reduction, climate sustainability, etc., can solve problems such as prolonging burnup, and achieve the goal of increasing fuel consumption, improving economy, and improving utilization rate Effect

Active Publication Date: 2021-08-17
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
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Problems solved by technology

However, these measures can only alleviate the swelling caused by fission gas and prolong the fuel consumption, and cannot fundamentally solve the problem

Method used

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  • High-burnup fast neutron reactor metal fuel
  • High-burnup fast neutron reactor metal fuel
  • High-burnup fast neutron reactor metal fuel

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Embodiment Construction

[0021] In order to make the content of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0022] As shown in the accompanying drawing, a fast neutron reactor metal fuel with high burnup, the reactor has a typical pool type fast neutron reactor core, which is loaded with metal fuel, and the metal fuel adopts natural axis U-50Zr alloy .

[0023] The operation mode of the core is that after the core loaded for the first time is operated under normal conditions for a certain period of time, when a certain amount of fission gas is accumulated, the temperature is artificially controlled to cause a phase change of the fuel and keep it in the γ phase for a period of time , this series of actions effectively accelerates the release of fission gas; after the release of fission gas, the temperature i...

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Abstract

The invention discloses a high-burnup fast neutron reactor metal fuel, a reactor core is loaded with a metal fuel, and the metal fuel adopts a natural uranium U-50Zr alloy. Phase change is achieved by manually controlling the temperature, fuel consumption is improved, and the service life of fuel is prolonged; the burnup of fuel is increased, the utilization rate of uranium is increased, and the pressure for treating nuclear waste is reduced; the service life of the fuel is prolonged, the nuclear power cost is reduced, and the nuclear energy economy is improved; and timely release of fission gas and periodic elimination of fuel defects are effectively carried out, core-cladding mechanical interaction caused by swelling is reduced, and safety is improved.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor fuel, in particular to a fast neutron reactor metal fuel with high burnup. Background technique [0002] As a reactor design concept, fast neutron reactor loaded with high burnup metal fuel is mainly proposed to improve the inherent safety and economy of the reactor. It belongs to the category of fast neutron reactors and meets the technical requirements and safety standards of the fourth generation nuclear energy. The basic operating principle of the reactor design is that neutrons convert fissile nuclides into fissile nuclides, which start to burn upon the impact of neutrons. The reactor concept consists of a traveling wave reactor, which, after being first ignited by enriched uranium fuel, continuously converts fissile fuel elements (U-238) into new fissile fuel elements (Pu-239), allowing the breeding burn wave be diffused. Core self-breeding greatly reduces the need for uranium enri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C3/60
CPCG21C3/60Y02E30/30G21C1/02
Inventor 恽迪文春阳冯琳娜王召浩柳文波单建强
Owner XI AN JIAOTONG UNIV
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