NIA Thermal Insulation Inspector Practice Questions - NIA Certified Thermal Insulation Inspector Exam

Corrosion Under Insulation (CUI) is most commonly caused by which condition?

Excessive insulation thickness Moisture trapped in the annular space between insulation and the metal surface Use of aluminum jacketing High thermal conductivity of the insulation

Correct Answer:

Moisture trapped in the annular space between insulation and the metal surface

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