Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1991-04-18
1992-07-28
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376446, 376364, G21C 332
Patent
active
051339269
ABSTRACT:
A fuel assembly includes an array of fuel rods and guide thimbles disposed in laterally spaced relation to one another. The guide thimbles have upper ends extending above the upper ends of the fuel rods. The fuel assembly also includes a top nozzle defined solely by a flat rectangular adapter plate having a main central portion and a peripheral portion surrounding and merging with the main central portion. The main central portion of the adapter plate has a plurality of attachment holes receiving the upper ends of guide thimbles for attachment of the adapter plate upon the guide thimble upper ends in spaced relation above the fuel rod upper ends. A first sest of holes are defined through one pair of diagonal corners of the adapter plate for use in attaching sets of spring assemblies directly to and upon the adapter plate for alignment along the peripheral portions thereof. Abutments formed at the other pair of diagonal corners of the adapter plate define a second set holes through the adapter plate for use in latching handling equipment directly to the adapter plate for lifting of the top nozzle.
REFERENCES:
patent: 4684502 (1987-08-01), Wilson et al.
patent: 4716016 (1987-12-01), Demario et al.
patent: 4792429 (1988-12-01), Hatfield
patent: 4986959 (1991-01-01), Sparrow et al.
Doshi Pratap K.
Ferlan Stephen J.
Chelliah Meena
Hunt Brooks H.
Westinghouse Electric Corp.
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