Nuclear reactor core having nuclear fuel and composite burnable

Details Nuclear reactor core having nuclear fuel and composite burnable Nuclear reactor core having nuclear fuel and composite burnable

1991-05-02

1992-09-15

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Encased with nonfuel component

376414, G21C 300

Patent

active

051475987

ABSTRACT:
A nuclear reactor core has a first group of fuel rods containing fissionable material and no burnable absorber, and a second group of fuel rods containing fissionable material and two burnable absorber materials. The groups of fuel rods are arranged in the core for controlling power peaking and moderator temperature coefficient. The number of fuel rods in the first group are greater than the number in the second group. The two burnable absorber materials can be provided as separate coatings or a mixture. One burnable absorber material is an erbium-bearing material such as erbium oxide and the other is a boron-bearing material such as zirconium diboride. Alternatively, the erbium-bearing material can be interspersed or mixed with the fissionable material.

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