Quick disconnect top nozzle for a nuclear fuel assembly

Details Quick disconnect top nozzle for a nuclear fuel assembly Quick disconnect top nozzle for a nuclear fuel assembly

1985-04-04

1987-10-27

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376224, 376233, 376235, G21C 332

Patent

active

047028823

ABSTRACT:
A method and apparatus for removably attaching a top nozzle to a nuclear fuel assembly to permit easy access to the fuel rods. The quick disconnect top nozzle structure includes guide thimbles which are clearance fitted into an adapter plate of the top nozzle. Load collars are attached to the guide thimbles to support compressive loads such as those imposed by holddown springs. Tensive forces, such as lift forces, are transferred through the top nozzle into peripheral straps of a top spacer grid. The peripheral straps include extensions which resiliently latch onto the top nozzle for ease of assembly and disassembly.

REFERENCES:
patent: 3235463 (1966-02-01), Sankovich
patent: 3770583 (1973-10-01), Klaumb et al.
patent: 3802996 (1974-04-01), Jones
patent: 3814667 (1974-06-01), Klaumb et al.
patent: 3828868 (1974-08-01), Jabsen
patent: 3968008 (1976-07-01), Piepers
patent: 3992259 (1976-11-01), Anthony et al.
patent: 4323428 (1982-04-01), Schallenberger

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