Induced nuclear reactions: processes – systems – and elements – Reactor structures – With particular control rod guide structure
Patent
1979-11-07
1982-04-06
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Reactor structures
With particular control rod guide structure
376446, G21C 330
Patent
active
043234283
ABSTRACT:
A reconstitutable fuel assembly for a nuclear reactor which includes a mechanical, rather than metallurgical, arrangement for connecting control rod guide thimbles to the top and bottom nozzles of a fuel assembly. Multiple sleeves enclosing control rod guide thimbles interconnect the top nozzle to the fuel assembly upper grid. Each sleeve is secured to the top nozzle by retaining rings disposed on opposite sides of the nozzle. Similar sleeves enclose the lower end of control rod guide thimbles and interconnect the bottom nozzle with the lowermost grid on the assembly. An end plug fitted in the bottom end of each sleeve extends through the bottom nozzle and is secured thereto by a retaining ring. Should it be necessary to remove a fuel rod from the assembly, the retaining rings in either the top or bottom nozzles may be removed to release the nozzle from the control rod guide thimbles and thus expose either the top or bottom ends of the fuel rods to fuel rod removing mechanisms.
REFERENCES:
patent: 3770583 (1973-11-01), Klumb
patent: 3828868 (1974-08-01), Jabsen
patent: 3861999 (1975-01-01), Zmola
patent: 3992259 (1976-11-01), Anthony
patent: 3997394 (1976-12-01), Aisch
patent: 4208248 (1980-06-01), Jabsen
Ferlan Stephen J.
Kmonk Stanley
Schallenberger John M.
Campbell J. R.
Dermer Z. L.
Walsh Donald P.
Westinghouse Electric Corp.
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