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(Surface Prep) Don’t Let Your Eyes Deceive You

Picture for Coatings + Proceedings 2021-ALL Papers
Available for download

A steel surface has been properly prepared to a white metal blast and it looks great … to the naked eye at least. But is it? Why is a surface that has the correct profile and appears to be perfectly clean typically not good enough? A standard abrasive blast will give you the profile and visible cleanliness, but how clean is it? Testing is the only way to determine. That is testing for conductivity, chlorides, and any other contaminants.

Product Number: 67-COAT_DEC21
Author: Kenneth E. Rossy / Alexander J. Petkas,
Publication Date: 2021
Industry: Coatings
$0.00
$20.00
$20.00

A steel surface has been properly prepared to a white metal blast and it looks great … to the naked eye at least. But is it? Why is a surface that has the correct profile and appears to be perfectly clean typically not good enough? A standard abrasive blast will give you the profile and visible cleanliness, but how clean is it? Testing is the only way to determine. That is testing for conductivity, chlorides, and any other contaminants. And to be sure that the blasting is not leaving new contaminants, the abrasive and water may need to be tested too. These are testing steps are typically not taken unless specifically called for in a job scope. But best practices require that they should be as they eliminate potential failure that leads to redoes and contractor reputation damage.
How do you remove the salts and contaminants that testing revealed? Either with wet abrasive blasting or pressure washing after dry abrasive blasting with the addition of a chemical rinse aid in the water to fully clean the surface. Test again and prove to yourself that the surface is now much cleaner than previously thought. This provides the owner a better coating job, improves corrosion protection and allows the contractor to look like a hero.

A steel surface has been properly prepared to a white metal blast and it looks great … to the naked eye at least. But is it? Why is a surface that has the correct profile and appears to be perfectly clean typically not good enough? A standard abrasive blast will give you the profile and visible cleanliness, but how clean is it? Testing is the only way to determine. That is testing for conductivity, chlorides, and any other contaminants. And to be sure that the blasting is not leaving new contaminants, the abrasive and water may need to be tested too. These are testing steps are typically not taken unless specifically called for in a job scope. But best practices require that they should be as they eliminate potential failure that leads to redoes and contractor reputation damage.
How do you remove the salts and contaminants that testing revealed? Either with wet abrasive blasting or pressure washing after dry abrasive blasting with the addition of a chemical rinse aid in the water to fully clean the surface. Test again and prove to yourself that the surface is now much cleaner than previously thought. This provides the owner a better coating job, improves corrosion protection and allows the contractor to look like a hero.

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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
Available for download

(Inspection) Coating Condition Assessments: The First Step in Fighting Corrosion on Aboveground Sto

Product Number: 53-COAT_DEC21
Author: Adam G. Beers / Lake H. Barrett, Jr.
Publication Date: 2021
$20.00

Being proactive and performing scheduled coating condition assessments on above ground storage tanks to prevent corrosion is of utmost importance to protect assets. Undetected corrosion can result in product contamination, section loss, create compliance issues resulting in fines levied by governmental agencies, and increase costs of asset replacement. Planned and detailed coating/lining condition assessments can help a tank owner realize the current condition of their assets and maximize life expectancy.
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(Inspection) Coating Inspection- Is a Manufacturers Rep a Good Choice for Project Coating Inspections?

Product Number: 52-COAT_DEC21
Author: Murray Heywood
Publication Date: 2021
$20.00

Every day a new specification comes out naming coating manufacturers reps as performers of Coating Inspection duties on projects. These often include multiple scheduled job site visit commitments and having the manufacturers rep sign off on inspection hold points. I know that in some instances this is due to old outdated engineer and owners’ specifications where this stipulation has been in the documents for years and no one ever bothered to remove it, even though they may agree with me on this point.
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