Induced nuclear reactions: processes – systems – and elements – With control of reactor – By movement of control element or by release of neutron...
Patent
1988-06-02
1990-02-27
Dehrend, Harvey E.
Induced nuclear reactions: processes, systems, and elements
With control of reactor
By movement of control element or by release of neutron...
376260, 376353, 376362, G21C 700, G21C 1900
Patent
active
049044435
ABSTRACT:
The control rod drive is removed from the top of the reactor. The control rod drive is attached at its upper end to the bottom end of the control rod drive guide tube. The control rod guide tube in turn couples at a rotationally locked bayonet fitting to the top of the control rod drive housing. Locking of the bayonet fitting occurs thru the orificed fuel support casting. The orificed fuel support casting, is locked from rotation at a pin located on the reactor core plate. The control rod guide tube in turn locks rotationally to the orificed fuel support casting. During refueling, the fuel bundles and the orificed fuel support casting are removed, freeing the control rod guide tube and its depending drive for rotation. Thereafter, a fitting captures the control rod guide tubes at coolant inflow apertures and rotates the guide tubes and the depending drives. Uncoupling of the control rod guide tube occurs at a bayonet fitting between the top of the control rod drive housing and the bottom of the control rod guide tube. Thereafter, upward removal of the control rod guide tube and, of necessity, the depending attached control rod drive occurs. Replacement of the drive occurs with the disclosed sequence reversed.
REFERENCES:
patent: 3650895 (1972-03-01), Sodergard
patent: 4158600 (1979-06-01), Akimoto et al.
Dehrend Harvey E.
General Electric Company
Schroeder Robert R.
LandOfFree
Control rod drive with upward removable drive internals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control rod drive with upward removable drive internals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control rod drive with upward removable drive internals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-172546