April 2018

Environment and Safety

Optimize your insulation to reduce costs

Corrosion under insulation (CUI) is a common problem that is shared by the oil and gas (onshore and offshore), refining, petrochemical, power and manufacturing industries.

Corrosion under insulation (CUI) is a common problem that is shared by the oil and gas (onshore and offshore), refining, petrochemical, power and manufacturing industries. CUI refers to the external corrosion of steel piping and vessels under insulation due to the penetration of water (FIG. 1). Inspection technologies for detecting CUI are limited, and the probability of detection depends greatly on the extent of inspection and insulation removal. CUI often remains undetected until the insulation is removed or a leak occurs. This type of corrosion is a common root cause for loss of primary containment (LOPC), leading to health, safety and environment (HSE) incidents, equipment repairs and un

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