SUPPORT GRID FOR THE FUEL ASSEMBLY OF A NUCLEAR REACTOR

摘要

The invention relates to nuclear engineering, in particular to the fuel assembly elements used substantially for the WCPR-400 and WCPR-100 reactors. The inventive support grid for the fuel assembly of a nuclear reactor is designed in the form of a plate which is provided with round openings for a heat carrier flow, round openings for mounting the fuel elements, a central tube and supporting tubes or guiding channels, wherein the openings for the heat carrier flow are uniformly disposed by six around each of the openings for mounting the fuel elements, the central tube and the supporting tubes or guiding channels. The openings for the heat carrier flow have two different diameters and are disposed around each of said openings so that the openings of different diameters alternate with each other. The invention makes it possible to increase the rigidity, strength and manufacturability of the grid.