MOX fuel assembly for pressurized nuclear reactors
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United States of America Patent
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Issued Date -
Jul 31, 2008
app pub date -
Nov 13, 2007
filing date -
Jun 30, 2003
priority date (Note) -
Abandoned
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Abstract
This invention relates to a MOX fuel assembly for PWRs that enables satisfactorily suppressing a power peaking factor without the necessity of reducing the Pu content per fuel assembly. The MOX fuel assembly has a lattice arrangement in which one or more burnable poison contained UO.sub.2 fuel rods and a plurality of MOX fuel rods are disposed in an n-rows by n-columns (n.times.n) lattice array. The MOX fuel rod consists of at least two kinds of MOX fuel rods including a plurality of first MOX fuel rods and a plurality of second MOX fuel rods. The first MOX fuel rod has a predetermined Pu content and a predetermined Pu weight, and the second MOX fuel rod has substantially the same Pu content as that of the first MOX fuel rod and a different Pu weight from that of the first MOX fuel rod.
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