Grid for nuclear reactor fuel assemblies

Details Grid for nuclear reactor fuel assemblies Grid for nuclear reactor fuel assemblies

1976-12-23

1979-11-20

Nelson, Peter A.

176 78, G21C 330

Patent

active

041750039

ABSTRACT:
A grid of improved design for a nuclear reactor fuel assembly which includes a multiplicity of interleaved straps enclosed in a peripheral frame which forms a grid of egg-crate configuration. Each cell formed by the grid straps, except those containing control rod guide tubes, supports a fuel rod which is held in place by springs projecting laterally inwardly into each cell from the grid straps. The springs extend parallel to the fuel rods and are spaced at 90.degree. intervals around the rod. Further, each of two adjacent springs contact a fuel rod at two points along its length and each of the other two adjacent springs contact the fuel rod at one point thus imparting strength and flexibility to the fuel assembly containing such grids.

REFERENCES:
patent: 3301764 (1967-01-01), Timbs et al.
patent: 3853701 (1974-12-01), Sasaki et al.
patent: 3920515 (1975-11-01), Ferrari et al.
patent: 3929569 (1975-12-01), Piepers et al.
patent: 3954560 (1976-05-01), Delafosse et al.
patent: 3966550 (1976-06-01), Foulds et al.

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