Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Vessel monitoring or inspection
Patent
1994-08-10
1996-05-21
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Vessel monitoring or inspection
376252, 376258, 376260, 376205, G21C 1700
Patent
active
055197418
ABSTRACT:
A system for inspection and mending in a reactor vessel of a nuclear reactor comprises a track mechanism, support mechanisms for supporting the track mechanism, an inspection apparatus traveling on the track mechanism, at least one mending apparatus traveling on the track mechanism, a setting mechanism for lowering all the above-described mechanisms and apparatus in the reactor vessel, each of which is composed so as to pass through a hole of an upper grid of a reactor, and an installing mechanism for positioning the support mechanisms fixed with two of the upper grid, a core support plate and internal structures below the core support plate and the track mechanism at the inside of the reactor vessel by remote control and for attaching the inspection apparatus and the mending apparatus to the same track mechanism by remote control. The position data of places to be mended are obtained by the inspection apparatus and transmitted as the target position data to a mending control apparatus for controlling the mending apparatus.
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patent: 5145637 (1992-09-01), Richardson et al.
Hosoda Yuji
Kajiyama Shigeru
Morinaka Ren
Suzuki Masanori
Chelliah Meena
Hitachi , Ltd.
Walsh Donald P.
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