NUCLEAR REACTOR FUEL ASSEMBLY Russian patent published in 2005 - IPC

Abstract RU 2248631 C1

FIELD: nuclear power engineering; fuel assemblies for pressurized-water reactors.

SUBSTANCE: proposed nuclear reactor fuel assembly has bottom nozzle, guide channels secured on the latter, bundle of fuel elements mounted in spacer grids, and top nozzle. The latter has sleeve with bottom, shield grid with guide members, and plate, all joined together, with guide channels running through them. Supporting members rest on projections made in guide channels. Springs are inserted between supporting members and sleeve bottom abutting against top stops secured on upper ends of guide channels. Guide members of shield grid are joined to sleeve for relative vertical displacement. Downward movement of shield grid is limited by bottom stops mounted on guide channels and its upward movement is limited by supporting members.

EFFECT: enhanced reliability of fuel assembly.

1 cl, 3 dwg

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RU 2 248 631 C1

Authors

Vasil'Chenko I.N.

Kobelev S.N.

V'Jalitsyn V.V.

Dates

2005-03-20—Published

2003-06-23—Filed