Control rod canopy seal positioning and welding system

Details Control rod canopy seal positioning and welding system Control rod canopy seal positioning and welding system

1993-10-08

1994-12-27

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

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

376260, 376203, 376206, G21C 1900

Patent

active

053772350

ABSTRACT:
A system is directed for remotely securing a canopy seal about a broken omega seal site between the control drive mechanism and the adapter tube of a nuclear reactor vessel so as to contain any radioactive leakage therebetween. The system includes a stalk measuring device for initially measuring the diameter of the adapter tube, a split canopy installation fixture which is adjusted according to the measurement detected by the stalk measuring device to position a two-piece canopy seal about the omega seal site, and a robotic weld arm for performing the upper and lower radial welds about the canopy seal as well as C-shaped vertical welds between the two-piece canopy seal.

REFERENCES:
patent: 5031816 (1991-07-01), Kwech
patent: 5268941 (1993-12-01), Kwech

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