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

Picture for Coatings + Proceedings 2021-ALL Papers
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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.

Product Number: 20-COAT_DEC21
Author: Loren L. Hatle
Publication Date: 2021
Industry: Coatings
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$20.00
$20.00

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.
However, coatings cannot fill the gap; no matter how advance the coating, surface-tolerance does not extend to application over chloride or sulfate contaminated steel, as coating performance is highly dependent upon unimpeded bonding with the surface it is meant to protect. Consistent coating adhesion is impaired by microcontaminants present in metal surfaces during fabrication as well as those potentially embedded during surface preparation blast processes occurring in field maintenance.
To ensure maximum bonding of protective coating to metal, surface preparation must include metal decontamination processes to fully eradicate the full array of microcontaminants that impede coating adhesion to ensure maximum asset resilience against problems such as stress corrosion cracking (SCC) and other CUI vulnerabilities. Case studies prove that early adoption of novel surface decontamination technologies confer complete permanent microcontaminant removal for improved protective coating bond strength to reduce economic investment in maintenance and increase long-term coating reliability, thus reducing vulnerability to CUI.

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.
However, coatings cannot fill the gap; no matter how advance the coating, surface-tolerance does not extend to application over chloride or sulfate contaminated steel, as coating performance is highly dependent upon unimpeded bonding with the surface it is meant to protect. Consistent coating adhesion is impaired by microcontaminants present in metal surfaces during fabrication as well as those potentially embedded during surface preparation blast processes occurring in field maintenance.
To ensure maximum bonding of protective coating to metal, surface preparation must include metal decontamination processes to fully eradicate the full array of microcontaminants that impede coating adhesion to ensure maximum asset resilience against problems such as stress corrosion cracking (SCC) and other CUI vulnerabilities. Case studies prove that early adoption of novel surface decontamination technologies confer complete permanent microcontaminant removal for improved protective coating bond strength to reduce economic investment in maintenance and increase long-term coating reliability, thus reducing vulnerability to CUI.

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Picture for Coatings + Proceedings 2021-ALL Papers
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(Insulation & Corrosion) Insulative Coatings - Fit for Purpose

Product Number: 17-COAT_DEC21
Author: Arin Shahmoradian
Publication Date: 2021
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Corrosion Under Insulation (CUI) is a very serious problem impacting the oil and gas, petrochemical, power and heavy industries. Due to the high costs associated with CUI, many industries have begun abandoning conventional jacket insulation. Recent advancements in trade association standards have helped engineers select, apply and inspect different types of insulative coatings in lieu of conventional jacket insulation.
Picture for Coatings + Proceedings 2021-ALL Papers
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(Inspection) What Do You Really Need to Know to be a Good Coatings Inspector?

Product Number: 60-COAT_DEC21
Author: William D. Corbett
Publication Date: 2021
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The role of a Coating Inspector has evolved considerably over the past few decades, and the responsibilities have increased over what used to be a rather straightforward job: to verify that surface preparation and coating application meet the project specification requirements. Today there are week-long or multi-week basic and advanced coating inspection courses, specialty courses that are industry-specific (e.g., bridge, nuclear), courses that are substrate-specific (e.g., concrete coatings inspection) and even coating-specific (e.g., inspection of thermal spray coatings). 
Picture for Coatings + Proceedings 2021-ALL Papers
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(Coating Formulation) Efficacy of Zinc Content in Sacrificial Protection of Coatings

Product Number: 44-COAT_DEC21
Author: Nicole Rakers / Mary Lyn Lim / Michael McCarthy / James Begley
Publication Date: 2021
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Zinc rich coatings have long been used in the protective coatings industry as one of the primary means of steel substrate protection against corrosion. The primary protection mechanism has historically been galvanic sacrificial loss of zinc metal and the simultaneous formation of protective zinc oxides and salts. Various standards and customer specifications exist to ensure that the coating will provide the necessary corrosion protection for the life of the asset.
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