A Framework for estimating piping reliability subject to corrosion under insulation

• Main Authors: Mokhtar, A.A., Ismail, M.C., Zainordin, A.B., Shahid, S.
• Format: Conference or Workshop Item
• Published: EDP Sciences 2014
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905029222&doi=10.1051%2fmatecconf%2f20141303001&partnerID=40&md5=68b1f20c9e41a008525fc386f7811ea9; http://eprints.utp.edu.my/32224/
• Institution: Universiti Teknologi Petronas

Corrosion under insulation (CUI) is one of the serious damage mechanisms experienced by insulated piping systems. Optimizing the inspection schedule for insulated piping systems is a major challenge faced by inspection and corrosion engineers since CUI takes place beneath the insulation which makes the detection and prediction of the damage mechanism harder. In recent years, risk-based inspection (RBI) approach has been adopted to optimize CUI inspection plan. RBI approach is based on risk, a product of the likelihood of a failure and the consequence of such failure. The likelihood analysis usually follows either the qualitative or the semi-qualitative methods, thus precluding it to be used for quantitative risk assessment. This paper presents a framework for estimating quantitatively the likelihood of failure due to CUI based on the type of data available. © 2014 Owned by the authors, published by EDP Sciences.