Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...
Patent
1994-04-08
1995-04-11
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
29723, 219158, 269 40, 269 41, 976DIG81, G21C 2100
Patent
active
054065992
ABSTRACT:
A weld fixture for receiving and aligning the fuel rod contact points of a nuclear fuel bundle spacer grid. Two plates are provided with intersecting unequally spaced slots that define polygons on one side of each plate. Both plates have bores therethrough substantially at the slot intersections and in the slots adjacent the outer edges of the plates. Bores are provided through both plates in polygons that correspond to fuel assembly guide tube and instrument tube locations. These positions receive guide cell pins during use, some of which are hollow and are used to bolt the plates together over the spacer grid strips. Bores in each plate through the defined polygons receive alignment pins. Guide rods receive and align the plates through corner bores in each plate. The slots and pins in the facing plates align the critical fuel rod contact points in the spacer grid during the intersection welding process.
REFERENCES:
patent: 4492844 (1985-01-01), Kobuck et al.
patent: 4522330 (1985-06-01), Kerrey et al.
Johnson, Jr. Garrett
King Raymond A.
Minnick, III Elbert C.
B&W Fuel Company
Edwards Robert J.
LaHaye D. Neil
Wasil Daniel D.
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