The effects of some seldomly noticed dissolved impurities in simulated boiling water reactor (BWR) water on environmental cracking of some BWR pressure-bearing construction materials were studied by constant elongation rate tensile (CERT) tests. Fluoride, silica, and thiosulfate were found to be harmful. Phosphate and perchlorate in concentrations up to 1 ppm had no effect in simulated hydrogen water chemistry (HWC). Organic acids and zinc were found to be generally beneficial, except when they occurred together.
National Association of Corrosion Engineers
1989
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