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2 806 814

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C1

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IPC

G21C3/30(2006-01-01)

(21) (22)

Application

2022116799, 2022-06-21

(24)

Start date

2022-06-21

(22)

Actual filing date

2022-06-21

(45)

Published

2023-11-07

(72)

Inventor

Aksenov Petr MikhajlovichLuzan Yurij VasilevichFilippov Vladimir Romanovich

(73)

Holder

Aktsionernoe Obshchestvo

FUEL ASSEMBLY OF NUCLEAR REACTOR (VARIANTS) Russian patent published in 2023 - IPC G21C3/30 

Abstract RU 2806814 C1

FIELD: nuclear energy.

SUBSTANCE: invention relates to fuel assemblies of nuclear reactors of the VVER-440, VVER-1000 and VVER-1200 types. The fuel assembly of a nuclear reactor includes a bundle of fuel elements containing fuel pellets, pressed in the axial direction by a 2-stage spring clamp resting on the shell of the fuel element, sealed with a plug and tip by means of contact-butt welding, located along a regular triangular grid with a pitch of 12.2…12.3 mm in spacer grids connected to the centre pipe, hex boot connected to the head and shank, anti-debris filter. Outer diameter of fuel element shell is 0.720…0.733 from the fuel rod grid spacing with a fuel pellet diameter of 7.57…7.60 mm.

EFFECT: invention makes it possible to increase the water-uranium ratio of fuel assemblies of these reactors by reducing the outer diameter of the fuel element cladding, reducing metal consumption and, ultimately, improving its neutron characteristics and energy production.

10 cl, 4 dwg

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RU 2 806 814 C1

Authors

Aksenov Petr Mikhajlovich

Luzan Yurij Vasilevich

Filippov Vladimir Romanovich

Dates

2023-11-07—Published

2022-06-21—Filed

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