Archive for March, 2009
Brush Wipe Procedure
Posted on 15. Mar, 2009 by charles frenzel.
Brush Wipe Procedure This method was developed by Todd Pacific Shipyard. These photos are courtesy of Todd Pacific. Sweep the surface with a Cloth wrapped around a brush Standard cloth and standard brush. Wrap cloth around a paint brush. Swipe the cloth across the surface. Define the amount of pressure • Brush as if painting a […]
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Example of Heavy Flash Rust Swatch
Posted on 15. Mar, 2009 by charles frenzel.
Example of Moderate Flash Rust Swatch: Easy to prepare the swatches. Keeps a constant light pressure. Gives a clear distinction between light, moderate, and heavy. The color transfers to only the cloth that is in contact with the surface. It can be difficult to interpret the various spots of color.
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Example of Moderate Flash Rust Swatch
Posted on 15. Mar, 2009 by charles frenzel.
Example of Moderate Flash Rust Swatch:
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Swatch Wipe
Posted on 15. Mar, 2009 by charles frenzel.
Swatch Wipe NACE Level 3 CIP Barry McCoy from Surface Technologies Corp. contributed this “Swatch” test as it is consistent from project-to-project and easily taught. Make a “swatch” or wad of the dry cloth. Tape the tail to make a handle. Lightly wipe the swatch once over the surface. This path was about 3 inches […]
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Summary of Hand Wipe
Posted on 15. Mar, 2009 by charles frenzel.
Summary- Hand Wipe Advantage of holding cloth in hand and wiping. It is easy. Disadvantage – it is difficult to maintain an even pressure and keep the cloth on the surface.
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Hand Wipe of Heavy Flash Rust
Posted on 15. Mar, 2009 by charles frenzel.
Examples of hand wipes over heavy flash rust. Note the formation of the dark, black rust under the light brown rust. There is a lot loose rust obscuring the surface, but no rust scale has formed. These colors are easily transferred to the hand wipes.
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Example of Moderate Flash Rust
Posted on 15. Mar, 2009 by charles frenzel.
Example of moderate flash rust. Visually the loose Moderate Flash rust appears to be a little denser than light. The surface is obscured. When wiped, the loose dust is easily transferred. Upper left is the footprint of a tape test. There is no black rust under the lighter rust.
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Wipe or Sweep with Cloth Held in Hand
Posted on 15. Mar, 2009 by charles frenzel.
Wipe or Sweep with a Cloth held in a hand Make a bundle of cloth in your hand. Swipe the dry cloth across the surface. Make one swipe, up or down or sideways with the cloth touching the surface. Try to avoid pressing the fingers against the surface. The following four pictures are examples of […]
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Methodology: Be Consistent!
Posted on 15. Mar, 2009 by charles frenzel.
Methodology- BE CONSISTENT What ever method you chose -BE CONSISTENT! Wipe or Sweep with a Cloth around a brush Develop a consistent routine Use consistent materials Use a consistent viewing angle and lighting. Interpretations must have clean agreement between the coatings manufacturer, person doing the work (contractor), person accepting the work (owner), and the […]
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Procedure for Evaluation in VIS-4
Posted on 15. Mar, 2009 by charles frenzel.
Procedure for Evaluation in VIS-4 When do you evaluate the Flash Rust? Flash rust and the substrate (surface) condition are evaluated at or before the time of painting. Look at the Project Documents to determine the length of time that can lapse between inspection points and paint application. Plan your inspection of flash rust so […]
