Fuel assembly

Details Fuel assembly Fuel assembly

1994-12-02

1996-05-07

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376439, 376441, 376443, 376438, G21C 700

Patent

active

055154085

ABSTRACT:
A fuel assembly is presented in which a plurality of support grids are disposed along the longitudinal direction of the fuel rods. The straps forming the grid cells of the support grids are provided with mixing vanes for generating turbulent flow of the cooling water passing through the grid cells. In a plan view of the support girds, each of the mixing vanes protrudes inwardly of the grid cells and is disposed along a positive diagonal direction and a negative diagonal direction. This configuration of the mixing vanes are effective in preventing the generation of systematic vibrations in the fuel assembly by canceling the effects of the turbulent flows of the cooling water. The direction of protrusion of the mixing vanes can be in two diagonal directions within one support grid, or it can be unidirectional along either diagonal direction within one support grid.

REFERENCES:
patent: 3862000 (1975-01-01), Pugh et al.
patent: 4426355 (1984-01-01), Burger
patent: 4895698 (1990-01-01), DeMario
patent: 5110539 (1992-05-01), Perrotti et al.
patent: 5272741 (1993-12-01), Masuhara et al.
patent: 5327472 (1994-07-01), Kraemer et al.

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