Uncoupling rod centering gauge

Details Uncoupling rod centering gauge Uncoupling rod centering gauge

1993-10-12

1995-02-28

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

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

376233, G21C 1700

Patent

active

053944461

ABSTRACT:
A gauge for ensuring that the uncoupling rod of a control rod drive is properly inserted in the center hole of the spud and not in one of the outer lobes, i.e., spud flow holes, which communicate with the center hole. The uncoupling rod is inserted in the spud. Then the gauge is placed on top of the spud with a centering ring protruding into the spud. The uncoupling rod is correctly installed if it is free to slide inside the gauge and the spud. The gauge is also provided with a ring to protect the spud during transfer of the control rod drive.

REFERENCES:
patent: 4028811 (1977-06-01), Hutter et al.
patent: 4158600 (1979-06-01), Akimoto et al.
patent: 4292131 (1981-09-01), Suzuki
patent: 4489036 (1984-12-01), Jamrus
patent: 4521370 (1985-06-01), Fischer et al.
patent: 4671518 (1987-06-01), Retz
patent: 4793056 (1988-12-01), Kurokawa et al.
patent: 5031816 (1991-07-01), Kwech

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