Nuclear fuel containing gadolinium

Details Nuclear fuel containing gadolinium Nuclear fuel containing gadolinium

1994-05-18

1996-06-04

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Encased with nonfuel component

376435, 376428, 376350, 376351, G21C 300

Patent

active

055240330

ABSTRACT:
Gadolinium is provided which is adapted for nuclear fuel as a burnable poison, having a plurality of isotopes in an isotopic composition such that the content of at least one even mass numbered isotope is smaller than the content of the same isotope in natural gadolinium. A fuel assembly is also provided having a plurality of nuclear fuel rods arrayed as a lattice in which at least one of the fuel rods contains the gadolinium burnable poison of the present invention. Also, a fuel assembly is described which has a plurality of nuclear fuel rods arrayed as a lattice which includes at least a first group and a second group of nuclear fuel rods containing gadolinium. The content of Gd-157 in the gadolinium is larger than that found in natural gadolinium. Further, the gadolinium concentrations in the first and second groups are different from each other.

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DATABASE WPI, Derwent Publications Ltd., AN 91-220337, JP-A-042437, Jun. 27, 1991.
Transactions of the American Nuclear Society, vol. 50, Nov. 1985, pp. 102-103, C. M. Hove, et al., "Improvement Of Gadolinia Fuel Cycle Economics By Isotopic Enrichment Of 157Gd".

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