| 摘要 |
PCT No. PCT/FR96/00989 Sec. 371 Date Dec. 3, 1997 Sec. 102(e) Date Dec. 3, 1997 PCT Filed Jun. 24, 1996 PCT Pub. No. WO97/01849 PCT Pub. Date Jan. 16, 1997The spacer grids consist of interlaced metal straps defining a regular lattice of cells. A spring for holding a fuel rod against bearing stops is fixed on at least one wall of each of the cells. In its part which constitutes the wall of the cell, the strap includes at least one stop produced by cutting and pushing the metal of the strap into the cell, so as to limit the displacement of a fuel rod housed in the cell. Stops for limiting the displacement of the fuel rod are placed preferably o the walls of the peripheral cells or corner cells of the spacer grid, opposite a peripheral belt of the spacer grid. The invention also relates to a fuel assembly which includes, in addition to structural spacer grids, end grids and additional mixing grids interposed between the structural spacer grids. |
