Douwe D. Haga - Redwood City CA, US Michael R. Flatbush - San Ramon CA, US Michael Mosseau - Santa Clara CA, US Tony S. Yan - Millbrae CA, US Willy Wiyatno - Union City CA, US Mark T. Reed - Menlo Park CA, US
Assignee:
Applera Corporation - Foster City CA
International Classification:
G01N 21/49 G01N 21/85 G01N 15/06
US Classification:
250577, 356624, 73293
Abstract:
The present application relates to an apparatus and method for measuring liquid levels in small-volume wells.
Inspection Tool For Detecting Cracks In Jet Pump Beams Of Boiling Water Reactor
Edward Ray Dykes - San Jose CA Yehuda Krampfner - Pleasanton CA David Lee Richardson - Los Gatos CA Michael Edward Mosseau - Mountain View CA Gunnar Viggo Vatvedt - Los Gatos CA
Assignee:
General Electric Company - San Jose CA
International Classification:
G01N 2790 G01N 2904
US Classification:
73601
Abstract:
An integrated apparatus for inspecting the arms of jet pump beams using eddy current technology, while also scanning the borehole region using ultrasound technology. In order to inspect the jet pump beam arms, a special scanner is required to properly move an eddy current coil in two dimensions over the complex machined surface on top of the arms. The scanner has two axes of motion and can perform a raster scan in either direction. The inspection payload, an eddy current probe, moves the length of the scanning axis and then the payload is indexed (i. e. , moved a small distance) along the indexing axis. The payload is then moved smoothly back along the length of the scanning axis. Data is collected only during motion along the scanning axis. The scanner has a unique curved track design for maintaining the orientation of the eddy current probe perpendicular to the inspection surface. It allows inspecting the top flat surface and the curved edges of the jet pump beams.