Device for centering a servicing tool in a steam generator tube
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United States of America Patent
Stats
-
Jul 28, 1992
Grant Date -
N/A
app pub date -
Apr 3, 1990
filing date -
Apr 4, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The centering device comprises a centering plate (23) mounted on a carrier member (21) for rotation about an axis parallel to the axis of the steam generator tubes and carrying two radial expansion fastening grippers (39), and a drive (22, 27, 28) for orientation of the plate (23) about its axis. The fastening grippers (39) are disposed on the plate in relative positions corresponding to openings provided in the tube plate (18) for the passage of the tubes (13).
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