Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...
Patent
1994-02-22
1996-06-04
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
376216, 376215, 376217, 376258, 376259, G21C 1900
Patent
active
055240305
ABSTRACT:
An uncoupling tool has a two-module design: one module being a driver assembly for developing the uncoupling movement and the other module being a probe assembly for verifying the uncoupled condition. The probe assembly attaches to the threaded end of the piston tube with its probe extending inside the piston tube. The driver assembly attaches to the CRD ring flange. The probe assembly detects the ring magnet in the drive piston using analog position sensors which operate on the principle of the Hall effect and solid state circuitry. A top sensor provides a signal indicating that the control rod is in its "full out" position; a bottom sensor provides a signal indicating that the control rod is uncoupled; and an intermediate sensor provides a signal indicating that the control rod is in a transition position between the "full out" and uncoupled positions. The probe incorporates spacers which focus the magnetic flux onto the sensors. To uncouple the control rod, the probe assembly is lifted using a separate driver assembly.
REFERENCES:
patent: 3594740 (1971-07-01), Comeau
patent: 3846771 (1974-11-01), Young et al.
patent: 3906469 (1975-09-01), Kronic
patent: 3919043 (1975-11-01), Reid
patent: 4053355 (1977-10-01), Vuckovich
patent: 4158600 (1979-06-01), Akimoto et al.
patent: 4363778 (1982-12-01), Abbott
patent: 4663576 (1987-05-01), Scarola et al.
patent: 4927594 (1990-05-01), Heibel et al.
Eckmann Thomas R.
Kowdley Balasubramanian S.
Lewis Thomas A.
Miller Christopher J.
Ortega Frank
Chelliah Meena
General Electric Company
McGinness James E.
Walsh Donald P.
LandOfFree
Multistage control rod drive uncoupling tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multistage control rod drive uncoupling tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multistage control rod drive uncoupling tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-389998