Corrosion Under Insulation – Insights from SGS

Monday September 11th, 2017 | Diane de Beaudrap | Partners, Technical Expertise, White Paper

CUI, corrosion under insulation, does not have to be a perennial issue. Preventing moisture ingress may be, but CUI happens over time and with the right strategies moisture can be detected before it initiates CUI.


What is CUI? How to properly manage an insulation system? What benefits can I get?

There is no doubt that industry has taken the issue of corrosion under insulation (CUI) seriously over the last 40 years. The volume of data on the history, causes and challenges associated with CUI is expansive. That data, as comprehensive as it is, has not lead to a discernible decrease in the instances of CUI.




This is reflected in the investment and research that continues today by OEMs, research institutes and mechanical integrity teams. These facts lead some to conclude the issue is in fact unsolvable. Better technology is needed that can evaluate components through insulation more accurately or monitoring systems that can predict the failure before it happens.


factory corrosion

This white-paper is divided into 7 parts.


  1. Executive Summary
  2. IThe Universal Solvent
  3. Managing An Insulation System
  4. The EPC Influence
  5. Thermal Protection Vs. Corrosion Under Insulation
  6. The Consequences
  7. Conclusion


You will learn that with a significant change in the strategy to address CUI process owners can realize the full benefit of their insulation with reduced cost of ownership.

This white paper has been provided by SGS in May 2017.

SGS is the world’s leading inspection, verification, testing and certification company. The Société Générale de Surveillance works quietly behind the scenes to ensure that everything is meeting best practices, the latest standards and international regulations.   



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This white paper has been provided by SGS in May 2017.


Written by:



Diane de Beaudrap

Sales & Marketing Director @Steel Available