What is it about?
We studied a type of pitting corrosion that may occur in the tubing material used in nuclear steam generators during plant outages. Steam generators are preserved in wet lay-up conditions. Chloride and thiosulfate ions that accumulated in crevices during operation may produce a particular type of pitting corrosion during the plant outage. Tested conditions simulate those of wet lay-up. We report the precise conditions where localized corrosion occur in Inconel 600 and 690, and Incoloy 800.
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Why is it important?
This is a relevant phenomenon that may affect PWR and CANDU nuclear power plants
Read the Original
This page is a summary of: Pitting corrosion of Ni-Cr-Fe alloys at open circuit potential in chloride plus thiosulfate solutions, Corrosion Science, April 2022, Elsevier, DOI: 10.1016/j.corsci.2022.110121.
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