Nuclear fuel assembly wear sleeve

Details Nuclear fuel assembly wear sleeve Nuclear fuel assembly wear sleeve

1979-12-10

1983-03-08

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

With particular control rod guide structure

376224, 376449, G21C 104

Patent

active

043760929

ABSTRACT:
An improved control rod guide tube for use in a fuel assembly in a nuclear reactor. The guide tube extends the complete length of the fuel assembly and has its upper end fastened in a cylindrical housing by swaging the guide tube material into grooves formed in the housing walls. To eliminate wear on the guide tube inner walls caused by hydraulic induced vibratory forces on a control rod adapted to move therein, a thin-walled chrome plated sleeve is threaded into the top end of the guide thimble and extends downwardly a distance sufficient to be engaged by the control rod during reactor operation. The sleeve serves as a highly resistant wear surface between the control rod and walls on the guide tube in the fuel assembly.

REFERENCES:
patent: 3425905 (1969-02-01), Greenhalgh
patent: 3475273 (1969-10-01), Krawiec
patent: 3481832 (1969-12-01), Rickert
patent: 3770583 (1973-11-01), Klumb
patent: 3814667 (1974-06-01), Klumb
patent: 3976834 (1976-08-01), Bevilacqua
patent: 4284475 (1981-08-01), Anthony

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