Nuclear fuel assembly

Details Nuclear fuel assembly Nuclear fuel assembly

1987-04-27

1989-01-03

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376448, 376377, G21C 332

Patent

active

047956089

ABSTRACT:
A nuclear fuel assembly for a boiling reactor comprises a plurality of fuel rods arranged in four sub-bundles surrounded by a fuel channel of substantially square cross-section. A vertical channel-formed support member for the passage of water, separates the sub-bundles of fuel rods. By arranging each sub-bundle with a reduced corner portion by not locating a fuel rod in that corner of the sub-bundle towards the center of the fuel assembly, the sub-bundles can be located in a separating channel-formed support member with an enlarged central channel. The enlarged central channel makes it possible to contain a larger quantity of non-boiling water in the central part of the fuel assembly, which results in better neutron moderation in the central part of the fuel assembly.

REFERENCES:
patent: 3808098 (1974-04-01), Fredin
patent: 4478786 (1986-10-01), Andersson et al.
patent: 4578241 (1986-03-01), Borrman et al.
patent: 4587093 (1986-03-01), Borrman et al.
patent: 4588550 (1986-05-01), Blomstrand
patent: 4675154 (1987-06-01), Nelson

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