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Lead (Pb) is present at low concentrations on the secondary side of steam generators, but is known to accumulate in steam generator sludge and become concentrated in crevices and cracks.Pb is known to have played a role in the degradation of Alloy 600MA tubing, necessitating the replacement of those steam generators.There is new evidence which indicates that Pb has also played a role in the stress corrosion cracking (SCC) of Alloy 600TT.Furthermore, laboratory testing indicates that advanced tubing alloys such as Alloy 690TT and Alloy 800NG area also susceptible to this attack.In response to these vulnerabilities, utilities are attempting to manufacture tubing using processes which will impart optimal corrosion resistance, fabricate and operate SGs to minimize stress in the tubing, undertake efforts to identify and remove the sources of Pb, reduce the existing inventory of Pb using chemical or mechanical cleaning processes, and maintain rigorous chemistry controls.Research is warranted to qualify chemical methods to mitigate PbSCC that may be observed in service.This presentation will review work performed through the Electric Power Research Institute (EPRI) to address the issue of Pb-assisted stress corrosion cracking of steam generator tubing.