Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Vessel monitoring or inspection
Patent
1998-02-20
2000-05-02
Jordan, Charles T.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Vessel monitoring or inspection
376245, 376248, 376260, 376268, 376305, 376310, 376316, G21C 1700, G21C 17003
Patent
active
060581530
ABSTRACT:
A preventive maintenance apparatus for structural members inside a nuclear reactor pressure vessel includes a ring-shaped guide rail having a plurality of lugs which is placed on an upper flange of a core shroud provided inside a reactor pressure vessel. At least some of lugs separately engage with a plurality of guide rods provided on an inner surface of the reactor pressure vessel. A turntable is rotated on the guide rail. A first discharging nozzle moving apparatus placed on the turntable moves a first discharging nozzle for adding compressive remaining stress to an outer surface of the core shroud in a radial direction of the core shroud and in an axial direction of the core shroud. A second discharging nozzle moving apparatus placed on the turntable moves a second discharging nozzle for adding compressive remaining stress to an inner surface of the core shroud in a radial direction of the core shroud and in an axial direction of the core shroud.
REFERENCES:
patent: 4496519 (1985-01-01), McGuire
patent: 4691723 (1987-09-01), Mierswa et al.
patent: 5305361 (1994-04-01), Enomoto et al.
patent: 5369676 (1994-11-01), Ortega et al.
patent: 5418824 (1995-05-01), Monserud et al.
patent: 5465278 (1995-11-01), Cowan, II et al.
patent: 5553106 (1996-09-01), Enomoto et al.
patent: 5586155 (1996-12-01), Erbes et al.
patent: 5734690 (1998-03-01), Sakamaki
patent: 5778713 (1998-07-01), Butler et al.
Chiba Noboru
Enomoto Kunio
Hayashi Eisaku
Kurosawa Koichi
Morinaka Ren
Babcock-Hitachi Kabushiki Kaisha
Hitachi , Ltd.
Jordan Charles T.
Keith Jack
LandOfFree
Preventive maintenance apparatus for structural members in a nuc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preventive maintenance apparatus for structural members in a nuc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preventive maintenance apparatus for structural members in a nuc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1599962