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Improved storage device for storing and/or transporting nuclear fuel assemblies

一种核燃料组件、存储装置的技术，应用在反应堆燃料元件、核工程、核能发电等方向，能够解决不兼容等问题

Active Publication Date: 2018-04-20
TN INT (FR)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has a significant detrimental effect on the overall weight of the basket without substantially reducing the necessary content of neutron absorbing elements in order to meet the subcritical state criteria
In order to achieve a satisfactory content of neutron-absorbing elements, oversized wall thicknesses should primarily be provided, which are incompatible with packaging operation requirements

Method used

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  • Improved storage device for storing and/or transporting nuclear fuel assemblies
  • Improved storage device for storing and/or transporting nuclear fuel assemblies
  • Improved storage device for storing and/or transporting nuclear fuel assemblies

Examples

Experimental program
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Embodiment Construction

[0046] refer to figure 1 and figure 2 , shows a storage device 1 placed in a cavity of a package (not shown) for transporting and / or temporarily storing irradiated nuclear fuel assemblies of the PWR type (not shown ). In general, all these elements form an enclosure when the enclosure houses the storage means 1 loaded with irradiated fuel assemblies, which is also an object of the present invention.

[0047] Such as figure 1 and figure 2 As shown, the storage device 1 comprises a plurality of adjacent cavities 2 arranged in parallel, each cavity 2 extending along a longitudinal axis 4 . Each cavity 2 is capable of containing at least one, and preferably a single, square section fuel assembly. The number of cavities is between four and twenty-four, for example, figure 1 Twelve cavities in the.

[0048]Thus, the cavities 2 are arranged juxtaposed to each other. These cavities are formed by a plurality of partitioned partitions 9, 11 parallel to the axis 4, also paralle...

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PUM

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Abstract

The invention discloses an improved storage device for storing and / or transporting nuclear fuel assemblies. The invention relates to a storage device for storing and / or transporting nuclear fuel assemblies, which includes recesses (2) defined by separating partitions (9) defining first and second recesses (2), the partition comprising: two first walls (22) defining the first and second recesses and made of an aluminium-alloy material which is free of neutron-absorbing elements, and defining therebetween a first inter-wall space (28); two second walls (30) arranged in the first space (28) and made of a material which comprises neutron-absorbing elements, the distance between the inner (36) and outer (34) surfaces of each second wall (30) defining a thickness (e2), and a distance (E) being defined between the outer surface (34) of each second wall and a median partition plane (20), said values meeting the condition 0.1 <= e2 / E <= 0.43.

Description

technical field [0001] The invention relates to the field of storage and / or transport of nuclear fuel assemblies of the PWR (pressurized water reactor) type, which may be irradiated (in the case of UO2 (uranium dioxide) fuel or MOX (metal oxide) fuel), Or not irradiated when the fuel is MOX fuel. Background technique [0002] Such devices (also known as storage "paniers" or storage "rateliers") include a plurality of adjacent logements, each capable of containing a nuclear fuel assembly. [0003] The memory device, intended to be accommodated in the cavity of an emballage, is designed to simultaneously fulfill three basic functions, which will be briefly described below. [0004] The first function is the heat transfer function of the heat released by the fuel assembly. In general, aluminum or an aluminum alloy with good thermal conductivity is used. [0005] The second function involves neutron absorption, and concerns about maintaining a subcritical state of the storage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C19/07G21C19/40G21F5/012
CPCG21C19/07G21C19/40G21F5/012Y02E30/30
Inventor 马塞尔·塔迪史蒂芬·布吕特纳赛尔·扎哈利
Owner TN INT (FR)
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