| 摘要 |
PROBLEM TO BE SOLVED: To provide a support grid of a fuel assembly for a pressurized water reactor which has small flow resistance and can be easily provided vanes for deflection with a large stirring effect. SOLUTION: The support grid of a fuel assembly for a pressurized water reactor keeps a circular tube or octagonal ferrule elements arrayed in nearly a rectangular grid. The vanes for deflecting cooling water around fuel rods in sub-channels formed by four ferrule elements adjacent to each other are attached by bridging the four ferrule elements. COPYRIGHT: (C)2007,JPO&INPIT
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