VIS Guides for Visual Cleanliness
Posted on 15. Mar, 2009 by charles frenzel in NSRP
Use of VIS Guides for Visual Cleanliness
Immediately after the cleaning, before the surface has flash rusted, (it might still be wet), evaluate the degree of Visual Cleaning.
The visual cleaning evaluation often occurs while the surface is still wet.
Courtesy Dr. Lydia Frenzel
A section was cleaned with hand-held lances over a period of 3 days. Then the jetters moved to another section. The visual cleanliness was evaluated at the time of coatings removal. The flash rust was evaluated on the day that it was painted.
Example of Visual Cleanliness (Thorough Cleaning) (Below).
Example of Moderate Flash Rust – at time of paint application.
Photo Courtesy of Dr. Frenzel
Conditions at time of Cleaning/Conditions prior to Cleaning
Example of Visual Cleanliness (Thorough Cleaning).
Example of Moderate Flash Rust – at time of paint application
