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Fuel cladding protective collar, method for producing fuel rods and device for carrying out said method

A technology for fuel rods and claddings, applied in fuel elements, manufacturing reactors, nuclear engineering solutions, etc., can solve problems such as contamination of cladding ends and achieve time-saving effects

Inactive Publication Date: 2008-10-22
AREVA NC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is also a risk of contamination at the end of the cladding where the filling takes place

Method used

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  • Fuel cladding protective collar, method for producing fuel rods and device for carrying out said method
  • Fuel cladding protective collar, method for producing fuel rods and device for carrying out said method
  • Fuel cladding protective collar, method for producing fuel rods and device for carrying out said method

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Embodiment Construction

[0061] Referring to FIG. 1 , a manufacturing apparatus 100 is shown in a state prior to forming fuel rods.

[0062] In fact, the fuel pellets 20 are arranged in alignment with the longitudinal axis (X, X'), around which a hollow cladding 30 is also provided for containing the stack of fuel pellets 20 in order to form the fuel Great.

[0063] The enclosure 30 extends between a first end 30a on the right in FIG. 1 and a second end 30b on the left in FIG. 1 .

[0064] The sleeve 40 covers the end region of the cladding 30 including the first end 30a.

[0065] The cladding 30 and the sleeve 40 are rotationally symmetric around the axis (X, X').

[0066] Preferably, the cladding 30 is made of a tube of metal such as zirconium alloy (Zircaloy).

[0067] The sleeve 40 constitutes the single-use protective element of the casing 30, for example being a relatively rigid elastomer.

[0068] In order to minimize the amount of waste, a sleeve 40 of limited length and minimum thickness ...

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PUM

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Abstract

The invention substantially relates to a method for producing fuel rods consisting a) in arranging a protective collar onto the open end (30a) of a cladding (30), wherein said collar comprises a passage provided with a shoulder for protecting the surface of said open end (30a) of the cladding (30), b) in inserting the cladding open end (30a) provided with the collar into a sheathing nose, c) in filling the cladding with pellets, e) in interrupting the filling when the cladding is filled with a determined number of pellets, f) in removing the end (30a) from the cladding nose and g) in ablating the collar. A device for carrying out said method and the protective collar foe nuclear fuel cladding are also disclosed.

Description

technical field [0001] The invention relates to a fuel cladding protective sleeve, a method for producing fuel rods and a device for carrying out the method. Background technique [0002] The main applications of the invention relate to the nuclear industry and radioactive fuels. [0003] More specifically, the invention relates to a sleeve, preferably tubular and of metallic material, for enclosing fuel pellets in a cladding. [0004] This is done at the level of a cladding nose with penetrating channels, one side of which sealably receives one end of the cladding, the other side of which receives fuel pellets, the fuel The pellets arrive in a straight line to fill the cladding and then close the cladding. [0005] It is important to protect the space in which the cladding is located from possible contamination and / or contamination from the pellets. There is also the risk of contamination of the end of the cladding where the filling takes place. [0006] In order to avo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C21/02G21C3/10
CPCG21Y2004/303G21Y2002/501G21C21/02Y02E30/40G21C3/10Y02E30/30
Inventor J-P·巴里托M·马尔尚
Owner AREVA NC