Corrosion Under Insulation

Corrosion Under Insulation (CUI) is a significant and often hidden threat in industries where insulated piping and equipment are used, such as in oil and gas, chemical processing, and power generation. CUI occurs when moisture infiltrates the insulation material and comes into contact with the metal surface, leading to localized corrosion. This type of corrosion is particularly insidious because it can progress undetected beneath the insulation, weakening the structure's integrity and potentially leading to catastrophic failures.

CUI can affect various metals, including carbon steel, stainless steel, and aluminum, each reacting differently depending on the insulation material, temperature, and environmental conditions. Managing CUI involves regular inspections, proper material selection, effective moisture barriers, and maintenance strategies to prevent moisture ingress.

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