Tag Archives: Steam generators
Steam Generator Management Program: Summary of 2016 Research into Lead Stress Corrosion Cracking Trends—Effect of Applied Potential on Alloy 690TT and pH on Alloy 800
Recent research suggests that the presence of lead can be linked to stress corrosion cracking of steam generator tubing in nuclear plants. In this study, EPRI investigated the conditions of a plant’s secondary water in which tubing materials are susceptible to lead-related stress corrosion cracking.
While foreign objects in nuclear plant steam generators do not always pose a threat, they can result in degradation of generator tubing which can in turn lead to leakage from primary to secondary plant systems. This report covers best practices in foreign object control, steam generator secondary-system inspections, response, tracking, and disposition of foreign objects. […]
Steam Generator Management Program: Assessment of Lead Induced Stress Corrosion Cracking Inhibitor Effectiveness
Stress corrosion cracking—a type of degradation in steam generator tubing in nuclear plants—can be linked to the presence of lead. One possible approach to mitigate this degradation involves adding to the plant’s secondary water chemicals that interfere with lead. In this study, researchers tested the effectiveness of several such “inhibitor” chemicals.