Corrosion under insulation (CUI) management program for petrochemical plant piping
AETERNA developed and implemented a corrosion under insulation (CUI) management program for a large petrochemical plant. Scope included CUI risk assessment, targeted inspection using advanced NDT, and development of a long-term corrosion management strategy aligned with API 571 and API 574.
500+ CUI-susceptible locations assessed
CUI ranking by temperature, coating, insulation type
40% cost reduction via risk-based prioritization
Extensive insulated piping with limited inspection history. Operating temperatures placed most piping in the CUI-susceptible zone. Access constraints required scaffolding and insulation removal planning.
We performed CUI risk ranking based on operating temperature, pipe material, coating condition, and insulation type. Targeted inspection locations were selected using risk-based methodology. NDT included real-time radiography, profile radiography, and guided wave UT.
All insulated piping assessed for CUI risk per API 571
Risk-prioritized inspection using RTR, profile RT, guided wave UT
Long-term strategy with schedules, coating upgrades, and mitigation
Measurable outcomes delivered through our technical expertise and commitment to quality.
Contact our corrosion management team to develop a CUI inspection program for your facility.
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