Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Position detection
Patent
1990-09-18
1991-10-01
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Position detection
376248, 33502, G21C 1708
Patent
active
050531875
ABSTRACT:
Apparatus for positioning a mast for the inspection and/or repair of a core shroud of a water-cooled nuclear reactor, heretofore have had television cameras directed at centering pins and bores from the side. Due to the inclined direction of surveillance, the alignment produced therewith has been inaccurate. In order to achieve a precise positioning, according to the invention a marking element which is provided between the television camera and the support plate has markings which can be brought into alignment with a marking made on the support plate. The centering pins and the bores are disposed concentrically to one another once they have been brought into alignment.
REFERENCES:
patent: 4590671 (1986-05-01), Havoic-Conroy
patent: 4657728 (1987-04-01), Coppa et al.
patent: 4704801 (1987-11-01), Frizot et al.
patent: 4717530 (1988-01-01), Beuqlot
patent: 4756867 (1988-07-01), Blocquel
patent: 4929413 (1990-05-01), Kaufmann et al.
ABB Reaktor GmbH
Greenberg Laurence A.
Lerner Herbert L.
Voss Frederick H.
Wasil Daniel D.
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