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Spent fuel storage cell

A technology of spent fuel and neutron, which is applied in the field of spent fuel storage to achieve the effect of ensuring criticality safety, good interchangeability and simple structure

Active Publication Date: 2016-09-07
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure involves a lot of welding work, and the process requirements are relatively strict

Method used

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Examples

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] Such as Figure 1-2 Shown is the spent fuel storage chamber provided by the present invention. The storage chamber is used for storing square spent fuel assemblies. The storage chamber includes a neutron poison layer, a clamping layer and a supporting layer in sequence from the inside to the outside.

[0025] The neutron poison layer is an empty storage cavity 5 for placing spent fuel assemblies surrounded by four neutron poison plates 1. The height of each neutron poison plate 1 can cover the height of the active section of the spent fuel assembly. Both sides of the poison plate 1 along the height direction are processed into a zigzag shape, and the edges of two adjacent neutron poison plates 1 are tenon-jointed. With such a connection structure, on the one hand, it can prevent the neutron poison plate from movi...

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PUM

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Abstract

The invention relates to a spent fuel storage cell. The storage cell sequentially comprises a neutron poison layer, a clamping layer and a support layer from inside to outside, wherein the neutron poison layer is a storage cavity (5) formed by four neutron poison boards (1) in an enclosed manner and used for placing a spent fuel component; the clamping layer comprises a hoop body (3) and a hoop strip (2) which are in butt joint, and the clamping layer is compressed to the outer side of the neutron poison layer; the support layer comprises two support plates (4) which are in butt joint, and the support layer is compressed to the outer side of the clamping layer. The spent fuel storage cell is good in rigidity, good in neutron capture ability, capable of guaranteeing the storage safety of the spent fuel component, simple in structure and easy to manufacture.

Description

technical field [0001] The invention belongs to the field of spent fuel storage, and in particular relates to a spent fuel storage chamber, which is suitable for storing square fuel assemblies of pressurized water reactors. Background technique [0002] Spent fuel assemblies discharged from reactors are usually stored in spent fuel storage racks in spent fuel storage pools. These grids are usually a rigid structure composed of several storage cavities arranged regularly. Each cavity is a storage chamber for storing fuel assemblies. In order to ensure the subcritical safety of fuel assemblies in dense storage state, the storage chambers contain neutron poison materials. [0003] At present, the main structures of storage chambers used for storing fuel assemblies include stainless steel sleeves sealed with cadmium, stainless steel sleeves coated with boron-aluminum plates, and boron steel plate sleeves. The main structure of the sealed cadmium-coated stainless steel sleeve ...

Claims

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Application Information

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IPC IPC(8): G21C19/07G21C11/02
CPCG21C11/028G21C19/07Y02E30/30
Inventor 刘慧芳李建奇唐兴贵谢亮秦玮姚春玲
Owner CHINA NUCLEAR POWER ENG CO LTD
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