| 摘要 |
<p>Spacer for a nuclear reactor fuel assembly the spacer comprising a cell-formed lattice work for retaining parallel, elongated elements such as fuel rods (4) into a bundle with substantially rectangular cross section. The cells are formed from tubular, preferably round sleeves (1), each of which offering a passage for one of said elements in order to mutually fix said elements. According to the invention each spacer consists of two sub-spacers (5, 6) arranged in a certain spaced relationship to each other in the longitudinal direction of the bundle. One of said sub-spacers (5) in a pair fixes elements lying substantially on one side of a diagonal in the cross-section through the bundle, and the other sub-spacers (6) in the pair fixes the other elements such that elements passing through the sleeves of said first sub-spacer (5) pass, possibly with some exception, at the side of the sleeves in said second subspacer (6) and vice versa. Some elements may pass through sleeves in both sub-spacers in order to fix them in relation to each other. <IMAGE></p> |
