Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1993-09-17
1994-08-16
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376442, 376462, G21C 334
Patent
active
053393414
ABSTRACT:
A mixer grid for a nuclear reactor fuel assembly has a plurality of strips arranged in interlocking rows and columns defining a plurality of cells. A stopper is fixed to each corner of each cell for both directing coolant flow, providing coolant mixing and providing a smooth contact surface for the fuel rod. The stopper is either cone-shaped or cylindrical for directing and channeling coolant flow. The stopper also has a smooth, flat chamfered surface for contacting the fuel rod and minimizing damage upon the shifting of the fuel rod. The grid is attached to the nuclear reactor fuel assembly by using guide cells comprising a plurality of support arches for welding to the nuclear reactor fuel assembly.
REFERENCES:
patent: 4474730 (1984-10-01), Heuman et al.
patent: 4692302 (1987-09-01), DeMario et al.
patent: 4832905 (1989-05-01), Bryan et al.
patent: 5094802 (1992-03-01), Riordon, III
D'Orio Jerome S.
Farnsworth David A.
King Raymond A.
B&W Fuel Company
Edwards Robert J.
Matas Vytas R.
Voss Frederick H.
Walsh Donald P.
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