Control rod servicing apparatus and method
US5243631A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1992 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Aug 19, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/531
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus and method are provided for servicing an irradiated nuclear control rod underwater in a reactor building servicing pool. A turntable containing a plurality of spaced apart tools is positioned adjacent to the control rod. A first tool aligns the turntable relative to the radioactive roller mounted to the control rod by a radioactive pin therethrough. The turntable is indexable to position a second tool adjacent to the radioactive roller and pin, with the second tool being effective for freeing the radioactive pin from the control rod. The turntable is indexable for positioning a third tool adjacent to the radioactive roller and pin for removing the radioactive pin and the roller from the control rod. In further embodiments of the invention the turntable is further indexable for positioning a fourth tool adjacent to the control rod for reaming the pin aperture through which the radioactive pin was mounted. The turntable further includes a fifth tool which is indexable into position adjacent to the control rod for inserting a replacement roller and replacement pin therein. The replacement pin is secured to the control rod by a sixth tool supported on the turntable which i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.