Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Vessel monitoring or inspection
Patent
1995-02-14
1996-12-17
Jordan, Charles T.
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Vessel monitoring or inspection
376245, 376260, 376258, 376252, 376390, 376451, G21C 1700
Patent
active
055861555
ABSTRACT:
A method and an apparatus for inspecting a core shroud by remote operation. The apparatus is a robotic scanning device which can be installed in the narrow space between the core shroud and the jet pumps and which can scan azimuthally and vertically around the circumference of the core shroud. The scanning device provides gross positioning to the area of interest and precise motion control in a limited scanning range. The scanning uses a thin wide arm to support a bank of transducers at its bottom end, and is rigidly mounted to a precision two-axis positioner at its top end. The arm is of narrow thickness to pass through the 0.5-inch access opening and to allow radial flexibility to absorb surface contour variation over the inspection area. The transducer mounting includes a water jet thruster to provide a radially inwardly directed reaction force to maintain the transducers in contact against the shroud. The arm is fabricated with a row of longitudinal holes extending throughout its length. The transducer leads are routed through some of the holes, providing them with a protective sheath for operation in the confined access. The other holes are used to conduct pressurized water from a pump to operate the jet thrusters.
REFERENCES:
patent: 3987666 (1976-10-01), Blanc et al.
patent: 4165254 (1979-08-01), Reyes
patent: 4548785 (1985-10-01), Richardson et al.
patent: 4966746 (1990-10-01), Richardson et al.
patent: 5009105 (1991-04-01), Richardson et al.
patent: 5053187 (1991-10-01), Haller
patent: 5068721 (1991-11-01), Dietrich
patent: 5087409 (1992-02-01), Wedellsborg et al.
patent: 5214616 (1993-05-01), Terhune et al.
patent: 5377237 (1994-12-01), Richardson et al.
patent: 5402570 (1995-04-01), Weems et al.
Ashburn John J.
Bayne Stephen B.
Erbes John G.
Chelliah Meena
General Electric Company
Jordan Charles T.
McGinness James E.
LandOfFree
Narrow access scanning positioner for inspecting core shroud in does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Narrow access scanning positioner for inspecting core shroud in , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Narrow access scanning positioner for inspecting core shroud in will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1998356