Fighting Shielded Corrosion

Abstract Shielded corrosion, particularly under disbonded coating at girth weld areas, is a significant threat to aged pipeline systems. Addressing this problem is challenging due to limitations in detecting its occurrence, predicting its behavior, monitoring its evolution, and finding a cost-efficient solution to it. This paper explores the mechanisms leading to shielded corrosion, emphasizing the importance of its early detection and proactive management. It discusses the limitations of current inspection techniques in supporting identification of the problem and proposes a practical approach to address the issue. The findings emphasize the necessity for improved coating systems, greater awareness about this damage mechanism, better analytical processes, and advanced inspection technologies to effectively identify and mitigate the risks associated with shielded corrosion.