Effects of PWR Primary Water Chemistry and Deaerated Water on SCC

Abstract

Abstract Most, probably all, structural materials have a fundamental susceptibility to SCC in high temperature water, although their specific response varies greatly with material and condition, water chemistry, temperature, stress, etc. The last twenty years of research has also established that most, probably all, variations of SCC result from a continuum response associated with a complex interdependence of many variables. This continuum allows integration of diverse observations and mechanistic insights to provide a basis for anticipating and interpreting the effects of specific variables. This paper discusses these anticipated and observed SCC effects over a range of high temperature water chemistries, with particular emphasis on those relevant to PWRs.