Spud finger gauge

Details Spud finger gauge Spud finger gauge

1994-02-15

1995-08-29

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Testing, sensing, measuring, or detecting a fission reactor...

81 10, 81 591, 33533, 33543, 3355809, G21C 1700

Patent

active

054467748

ABSTRACT:
A tool for checking the required spacing between adjacent fingers of the spud in a control rod drive. The tool is a GO-NO-GO gauge with tight tolerance. The spud finger gauge has two circular cylindrical pins of different diameter. One pin (i.e., the GO pin) has a diameter less than the required spacing between adjacent fingers of the spud. The other pin (i.e., the NO GO pin) has a diameter greater than the required spacing between adjacent fingers of the spud. The spacing is correct if the GO pin passes through the spacing and the NO GO pin does not.

REFERENCES:
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patent: 4092213 (1978-05-01), Nishimura
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patent: 4543638 (1985-09-01), Scarffe
patent: 4696190 (1987-09-01), Buchel et al.
patent: 4790073 (1988-12-01), DuPlanti
patent: 4790079 (1988-12-01), Meyers
patent: 4863673 (1989-09-01), Carruth
patent: 4868992 (1989-09-01), Crafts et al.
patent: 5315259 (1994-05-01), Jostein

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