Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...
Patent
1994-09-30
1995-07-18
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
376310, G21C 1900
Patent
active
054348951
ABSTRACT:
A detection and inspection of cracks (135) on the internal surface of the adapter (2) is carried out, at least in a zone close to the weld for fastening the adapter (2), using remote inspection operations comprising at least one dye penetration inspection with remote borescope examination of the cracks (135) revealed by the dye penetration. At least one excavation cavity (136) is made by machining to a specified depth of the internal surface of the adapter (2) having a crack (135). As a function of the result of the dye penetration inspection, the zone is or is not built back up after excavation. The device comprises an assembly for moving a rod in translation and in rotation inside the adapter. Brushing, cleaning, or sprinkling means may be fastened to the end of the rod. The device also includes a second assembly for moving a borescope support inside the adapter and tooling for machining the internal surface of the adapter.
REFERENCES:
patent: 4311556 (1982-01-01), Iwamoto et al.
patent: 5115136 (1992-05-01), Tomasch
patent: 5317607 (1994-05-01), Formanek
Brayer Laurent
Domy Alain
Hebert Claude
Framatome
Wasil Daniel D.
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