CUI White Paper
Corrosion Under Insulation (CUI) is a major issue for oil, gas and chemical process industries. It is estimated that up to 10% of annual maintenance costs are caused by CUI; severe cases of CUI may put personnel, environment and reputation at risk. Furthermore it’s estimated it accounts for 40% to 60% of pipe maintenance costs – estimated to be around $1 trillion annually.
We’re here to help: our lightweight, resilient and compact insulation systems provide highly effective barriers to water and water vapour.
Water vapour ingress: InnCoa: Independent test of ArmaFlex®
The choice of insulation system is a critical factor in the mitigation of CUI. A dedicated engineered simulation was conducted by the widely renowned corrosion specialist institute InnCoa based in Germany. To assess the resistance capabilities of commonly used insulation systems related to the ingress of water vapour and the onset and spread of corrosion in a high humidity environment.
The insulation systems included: Flexible Elastomeric Foams (FEF), Glass Fibre, Polyurethane and Stone Wool.
The results confirmed in detail how closed cell FEF insulation systems have demonstrated best in class performance on resistance against water vapour ingress and the spread of CUI.