Areva Np Gmbh

Framatome Anp Gmbh

Bruno Bonnamour

Michel Bonnamour

Jacques Gauthier

Berenger D'Uston De Villereglan

Claude Bois

Bérenger D'USTON De Villereglan

A spacer grid for a nuclear fuel assembly for a light water reactor delimits a substantially regular array of cells housing nuclear fuel rods. The spacer grid further including supporting members which project into the cells from the peripheral belt of walls. The inner surface of at least one supporting member has before irradiation a concave shape in a plane transverse to the longitudinal direction. The inner surface of the contact part of the supporting member also has a convex shape in a longitudinal plane orientated radially with respect to the central axis of the corresponding cell before irradiation.

Spacer grid with saddle-shaped supports and corresponding nuclear fuel assembly

A spacer grid for a fuel assembly in a light-water-cooled nuclear reactor, for providing the transverse retention of a bundle of fuel rods in mutually parallel arrangements, having an array of cells juxtaposed and placed in a regular lattice, each bounded and separated from neighboring cells by at least one peripheral wall which is open at two opposed ends, along the direction of an axis of the cell, so as to receive a fuel rod of cylindrical general shape passing along the cell along its axis parallel to the peripheral wall.

Spacer grid for a fuel unit in a nuclear reactor cooled by light water

Growing community of inventors

Villeurbanne, France

Bruno Bonnamour