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Improving mineral wool CUI performance – next generation

Picture for Improving mineral wool CUI performance – next generation
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Mineral wool has been widely used for several decades as the primary thermal insulation on piping and equipment to save energy, protect personnel, and reduce emissions. The products have been favored because they are non-combustible, cost effective, provide excellent (and reliable) thermal performance and are safe, easy, and efficient to install.

Product Number: 51323-18959-SG
Author: Mikkel Østergaard Hansen, Soeren Nyborg Rasmussen
Publication Date: 2023
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$20.00
$20.00

Mineral wool has been widely used for several decades as the primary thermal insulation on piping and equipment. As Corrosion under insulation (CUI) is a key challenge in the heavy industrial segment, it has been a mineral wool industry focus to reduce any effects insulation materials may contribute in relation to corrosion.
An important step forward in the process of improving the material in relation to CUI, is the incorporation of corrosion inhibitors within the insulation. Such inhibitors will be activated in case of water ingress and pro-actively mitigate the effects of CUI.
By screening of a number of corrosion inhibitor mixtures for efficiency in a CUI environment, it has been possible to identify an effective mixture that can work in a CUI environment. It was also possible to find a method to incorporate the inhibitors in the insulation.
Testing to ASTM G189 proved that the mineral wool with inhibitors provides corrosion protection in an accelerated CUI environment. Mineral wool with inhibitors will not prevent CUI but may be used to complement the coating systems where there are initial defects, thereby reducing the risk of premature CUI events.

Mineral wool has been widely used for several decades as the primary thermal insulation on piping and equipment. As Corrosion under insulation (CUI) is a key challenge in the heavy industrial segment, it has been a mineral wool industry focus to reduce any effects insulation materials may contribute in relation to corrosion.
An important step forward in the process of improving the material in relation to CUI, is the incorporation of corrosion inhibitors within the insulation. Such inhibitors will be activated in case of water ingress and pro-actively mitigate the effects of CUI.
By screening of a number of corrosion inhibitor mixtures for efficiency in a CUI environment, it has been possible to identify an effective mixture that can work in a CUI environment. It was also possible to find a method to incorporate the inhibitors in the insulation.
Testing to ASTM G189 proved that the mineral wool with inhibitors provides corrosion protection in an accelerated CUI environment. Mineral wool with inhibitors will not prevent CUI but may be used to complement the coating systems where there are initial defects, thereby reducing the risk of premature CUI events.

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(Insulation & Corrosion) Surface Decontamination Significantly Reduces Vulnerability to CUI

Product Number: 20-COAT_DEC21
Author: Loren L. Hatle
Publication Date: 2021
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CUI (corrosion under insulation) is a pervasive, difficult and high-liability issue for petrochemical, power, shipping, and other industries. Situational variations (meteorological, geographical, seasonal, etc.) can confound conventionally specified surface preparation attempts to achieve perfect or near-perfect metal hygiene, thus reducing expected coating life by 30 to 75 percent. Because conventional surface preparation processes have historically been unable to adequately relieve microcontamination of metal surfaces, organizations have settled for an uneasy balance between economic and physical feasibilities that exclude the possibility of achieving ideal surface preparation outcomes and rely more heavily upon barrier coatings to supply needed corrosion control.
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