Control of corrosion on the secondary side of steam generators. Proceedings

This meeting was organized to improve the understanding of corrosion processes which occur on the secondary side tubing of steam generators used in pressurized water reactors. The principal aim of this meeting was to develop and assess the bases for modeling such corrosion processes including considerations of the bulk secondary chemistry, local chemistry in crevices, chemistry on tubing surfaces, and the inherent dependencies of corrosion on primary variables. This meeting was undertaken in order to improve the detailed understanding of the quantitative factors which affect secondary side corrosion so that new approaches to minimizing corrosion could be developed. The present approach to minimizing corrosion on the secondary side assumes that the near neutral range of local pH is most likely to minimize corrosion and that adjustments of the bulk pH which favor meeting this local pH should be maintained. The questions that were addressed by this meeting and that were implicit in this overall objective are: (a) whether the aggressive corrosion occurs in near neutral region for tubing alloys and (b) whether maintaining a bulk pH with an appropriate chemistry can produce the requisite conditions in the local crevices. The meeting was organized to address both questions in detail. Separatemore » abstracts were prepared for most papers in this volume.« less