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Head-end process for the reprocessing of reactor core material

A reactor and core material technology, applied in reactor fuel elements, reactors, nuclear engineering, etc., can solve the problems of carrier material pollution, carrier material recycling difficulties, and incomplete material separation

Inactive Publication Date: 2010-09-29
THE EURO ATOMIC ENERGY COMMUNITY EURATOM REPRESENTADA POR THE EURO COMMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] The traditional method for recycling used nuclear fuel has the disadvantage of incomplete material separation, and the carrier material is still contaminated by nuclear fuel, so the recycling of the carrier material is difficult

Method used

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  • Head-end process for the reprocessing of reactor core material
  • Head-end process for the reprocessing of reactor core material
  • Head-end process for the reprocessing of reactor core material

Examples

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Embodiment Construction

[0039] The invention may be more readily understood from the following description of non-limiting embodiments with reference to the above-mentioned figures.

[0040] figure 1 The structure of fuel particles 10 is shown. In the alkyl group which does not limit the general concept of the invention, especially methyl, ethyl or n-propyl, W 4 , W 5 and W 6 independently of each other is Cl, oxaalkyl, oxacarbonylalkyl having 1-5 C atoms, Phe is 1- or 1,2- or 1,3-, 1,4-phenylene, and k 1 and k 2 are 0 or 1 independently of each other. Particularly preferred are oxetane, acrylate, methacrylate, amide, diene and oxetal groups.

[0041] The most preferred end groups are oxetane and acrylate groups.

[0042] The formation of the network can be initiated by initiating the reaction of the reactive groups with each other by irradiation with radiation of an appropriate wavelength. Examples of suitable types of radiation include ultraviolet, infrared or visible light, X-rays, gamma-r...

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Abstract

In a head-end process for the reprocessing of reactor core material with embedded fuel particles, reactor core material is arranged in a reactor containing a fluid. The reactor comprises a voltage discharge installation in the fluid. Voltage discharges are applied through the fluid for fragmenting the fuel particles into fragmentation products and the fragmentation products are segregated.

Description

[0001] The present invention relates to the head-end process of reprocessing reactor core material, and more particularly to the fragmentation of coated fuel particles and nuclear fuel elements comprising coated fuel particles embedded in a matrix material. Background of the invention [0002] In many cases, reprocessing of coated particulate fuel, for example from high temperature gas cooled reactors (HTGRs), is useful in maximizing fuel utilization. For the incineration of minor actinides in the U-Pu (fast reactor) and Th-U fuel cycles as well as in these reactors, aftertreatment of the coated pellet fuel is even necessary. [0003] Coated fuel particles are characterized by their high resistance to mechanical shock and chemical attack, which makes them safe, very diffusion resistant and suitable for direct disposal, but difficult to reprocess. [0004] For applications in reactors, fuel particles are usually embedded in the matrix material of the fuel element (e.g. graphite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C19/34G21C19/44
CPCY02E30/30Y02W30/50
Inventor M·A·菲特雷尔H·布卢姆P·霍佩J·辛格
Owner THE EURO ATOMIC ENERGY COMMUNITY EURATOM REPRESENTADA POR THE EURO COMMISSION