System for cleaning, inspection and tooling delivery in the secondary side of a steam generator
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United States of America Patent
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Dec 16, 2008
Grant Date -
Jan 31, 2008
app pub date -
Jul 26, 2006
filing date -
Jul 26, 2006
priority date (Note) -
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Abstract
A system for delivering tooling around the annulus of a steam generator without damaging any part of the steam generator is provided where the tooling delivery device travels between the tube bundle and the vessel shell and delivers tooling for cleaning, inspection, retrieval and repair. The device has various types of locomotion system including treads, rollers, magnets and vacuum. The cleaning device has multiple high pressure nozzles that rotate 180 degrees about a horizontal axis and 360 degrees about a vertical axis enabling the device to sweep multiple lanes of tubes simultaneously and also clean the front and back of the annulus floor and tube sheet.
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