Nuclear fuel assemblies and reactor cores including them

Details Nuclear fuel assemblies and reactor cores including them Nuclear fuel assemblies and reactor cores including them

1990-03-20

1993-05-04

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Encased with nonfuel component

376447, G21C 300

Patent

active

052079791

ABSTRACT:
A nuclear fuel assembly has an array of fuel rods comprising a plurality of first fuel rods each containing nuclear fuel material but not containing burnable poison and a plurality of further fuel rods each containing both nuclear fuel material and burnable poison. The further fuel rods comprise second fuel rods and third fuel rods, and each second fuel rod has at a lower region of the fuel assembly a burnable poison concentration which is a minimum burnable poison concentration in the further fuel rods. To increase the effectiveness of the second fuel rods in controlling axial power peaking, as seen in plan view on the array, the first fuel rods are the nearest neighbors of each further fuel rod.

REFERENCES:
patent: 3799839 (1974-03-01), Fischer et al.
patent: 4324615 (1982-04-01), Kobayashi et al.
patent: 4324615 (1982-04-01), Kobayashi et al.
patent: 4629599 (1986-12-01), Crowther et al.
patent: 4789520 (1988-12-01), Morimoto et al.

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