Archive for 'Programs'
Different Areas with Brush Test
Posted on 15. Mar, 2009 by charles frenzel.
Comparative results: Heavy Flash Rust formed from water coming from holes. Different section where Light, moderate, and heavy flash rust had formed in close proximity.
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Example of Moderate Flash Rust on Brush
Posted on 15. Mar, 2009 by charles frenzel.
Example of Moderate Flash Rust on Brush:
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Example of Brush Test on Light Flash Rust
Posted on 15. Mar, 2009 by charles frenzel.
Example of Brush Test on Light Flash Rust: This view has the sun Illuminating the surface. Substrate appears darker as it is in shadow. Inspection is biased by lighting angle.
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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.
