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2 322 710

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IPC

G21C3/344(2006-01-01)

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Application

2006115104/06, 2006-05-02

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Start date

2006-05-02

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Actual filing date

2006-05-02

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Published

2008-04-20

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Inventor

Chinnov Aleksandr VladimirovichLipukhin Nikolaj AleksandrovichShustov Mstislav Aleksandrovich

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsenratov"

METHOD FOR PRODUCING SPACER GRIDS FOR NUCLEAR REACTOR FUEL ASSEMBLY Russian patent published in 2008 - IPC G21C3/344 

Abstract RU 2322710 C2

FIELD: nuclear power engineering; spacing fuel elements in nuclear reactor fuel assemblies.

SUBSTANCE: spacer grid manufacture includes mechanical production of separate subchannels, chemical treatment, gathering of subchannels into field including introduction of auxiliary insets into holes under guide channels and into central tube, welding of subchannels to form spacer grid, and heat treatment; auxiliary inserts are made of size equal to product of diameter of guide channel or central tube by coefficient including spacer grid deformation in the course of welding and heat treatment; after welding inserts are removed.

EFFECT: reduced heat treatment time, enhanced service life of auxiliary inserts, facilitated manufacture of spacer grids.

1 cl, 2 dwg

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RU 2 322 710 C2

Authors

Chinnov Aleksandr Vladimirovich

Lipukhin Nikolaj Aleksandrovich

Shustov Mstislav Aleksandrovich

Dates

2008-04-20—Published

2006-05-02—Filed

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