Steam generator desludging

摘要

Secondary side chemical cleaning of steam generators (SGs) removes sludge piles from the tube sheet and scales from the outside of the heat exchanging tubes. Thus the heat transfer capability of the SG can be improved and the risk of future corrosion - caused by accumulated salts in the sludge pile - will be reduced. The cause of existing corrosion damage to the tubes, for example denting, is eliminated by the cleaning process.