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Exploring the Mechanism and Longevity of Corrosion Inhibitors in Insulation

Insulation systems, comprised of thermal insulation, jacketing, mastics, and sealants, are designed to keep water out in order to maintain the integrity of the thermal insulation and limit corrosion under insulation (CUI). However, even the best designed and installed systems sometimes become compromised, resulting in the presence of water at the pipe surface and the potential for CUI. As such, it is important to understand how the chemistry of the thermal insulation affects the CUI potential.

The purpose of this analysis and paper is for designers and specifiers to:

• Better understand how CUI is impacted by the interaction between the thermal insulation chemistry and the metal surfaces that are routinely seen in industrial systems.
• Gain a better understanding of the longevity of the XOX Corrosion Inhibitor® in thermal insulations under compromised conditions.

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