Nuclear fuel assembly

A fuel assembly for a light-water reactor with a substantially square cross section comprising a plurality of fuel rods extending between a bottom tie plate and a top tie plate, a coolant flowing upwards through the fuel assembly, wherein the top tie plate or the bottom tie plate is made in one sheet-metal piece with a plurality of flow openings and wherein, in the same sheet, mixing vanes are arranged, punched out in the flow openings and folded in relation to the rest of the plane of the top or bottom tie plate for mixing the coolant flowing through the flow opening.

A fuel assembly for a light-water reactor with a substantially square cross section comprising a plurality of fuel rods extending between a bottom tie plate and a top tie plate, a coolant flowing upwards through the fuel assembly, wherein the top tie plate or the bottom tie plate comprises flow openings and side supports for supporting the fuel rods, said flow openings and side supports formed in the same sheet-metal piece and is made with a wavy cross section such that a top tie plate arranged adjacent to a bottom tie plate makes contact therewith in portions surrounding flow openings and wherein, between these portions, they are arranged in spaced relationship to each other.

A fuel assembly for a light-water reactor with a substantially square cross section comprising a plurality of fuel rods extending between a bottom tie plate and a top tie plate, a coolant flowing upwards through the fuel assembly, wherein the top tie plate or the bottom tie plate comprises flow openings for the passage of the coolant and side supports for supporting the fuel rods in the lateral direction, the side supports being formed in one and the same sheet-metal piece as the flow openings and being folded substantially 90° in relation to the rest of the structure of the top tie plate or the bottom tie plate, and Wherein the side supports are made with a substantially tapering shape.