A Estimate Method of Sludge Thickness for Steam Generator Based on TV Inspection

The importance of TV inspection of the vertical steam generator was introduced and the weakness of existing estimating method for sludge thickness was indicated. After analyzing and comparing characteristics of several existing methods, a new solution based on sample photo gallery was then proposed, which was convenient for use with increased estimation accuracy of sludge thickness of tube sheet, thus guaranteeing the reliability of TV inspection results.