Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor...
Patent
1986-01-10
1988-01-05
Kyle, Deborah L.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
376254, G21C 1710
Patent
active
047175290
ABSTRACT:
A thimble guide assembly for use in a nuclear reactor includes a lower element which can be screwed into a bore in a core plate and an upper element which can be screwed to the lower element. One of the screw-connections is right-handed while the other is left-handed. The length of the upper element is selected so that the exposed portion of a thimble tube, which extends through the thimble guide assembly and into a fuel assembly above it, is relatively modest, thereby minimizing the turbulence to which the thimble tube is exposed. The lower element of the thimble guide assembly is provided with a sleeve portion which extends through the bore in the core plate, and the tip of the upper element terminates in a planar, annular lip. Both elements are provided with surfaces for engagement by wrenches or other tools. The lower element has annular grooves for engagement by a lower spring clip which is welded to the core plate and an upper spring clip which is welded to the upper element.
REFERENCES:
patent: 3713971 (1973-01-01), Van Santen et al.
patent: 3816245 (1974-05-01), Bevilacqua
patent: 3971698 (1976-07-01), Wolff et al.
patent: 4198272 (1980-04-01), Salmon
patent: 4334554 (1982-06-01), Geiger et al.
patent: 4535523 (1985-08-01), Leclercq
patent: 4584168 (1986-04-01), Formanek
Merkovsky Daniel
Schwirian Richard E.
Abeles Daniel C.
Kyle Deborah L.
Wasil Daniel
Westinghouse Electric Corp.
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