Nuclear fuel assembly
AssigneeABB Atom AB
InventorsOlov Nylund, David Schrire
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Abstract
The present invention relates to a fuel assembly with a substantially square cross section for a light-water reactor. The light-water reactor comprises a plurality of fuel rods extending between a top tie plate and a bottom tie plate. A fuel rod comprises a cladding tube which surrounds a column with fissionable material. According to one aspect of the invention, at least one fuel rod is provided with an axial gap in the fissionable material. Around this axial gap, the mass of the material is greater than the mass of the material in the main part of the cladding tube.
Claims8
A fuel assembly for a light-water reactor with a substantially square cross section comprising a plurality of fuel rods extending between a top tie plate and a bottom tie plate, wherein a coolant is adapted to flow from below and up through the fuel assembly and a fuel rod comprises a cladding tube which surrounds a column of fissionable material wherein at least one fuel rod is provided with an axial gap in the fissionable material and wherein a thickness of a unitary material around the axial gap is greater than a thickness of a material in a main part of the cladding tube.
Dependencies are inferred from the claim text.