The state of your protective coatings is an indicator of possible future repairs for your bulk gas storage tanks.
When applied correctly, protective coatings can increase the longevity of steel assets by protecting them from corrosion damage. Most business owners or plant operators want to avoid those costly, totally preventative repairs. To avoid, corrosion damage, you must be able to identify when there is a protective coating failure.
Here are 5 coating failures to watch for during your next equipment survey:
Loss of Adhesion
Loss of adhesion presents itself when the paint system does not adhere correctly to the base surface. You can tell if a coating does not adhere correctly through a pull-off test. If left untreated, the paint will flake off, revealing the unprotected base. The steel is now vulnerable to environmental concerns like corrosion. Loss of adhesion occurs when any of these factors are present:
To repair a coating failure like this, the painting contractor must remove the failed coating through sanding & repaint with the appropriate painting system.
- Surface contamination
- Unsuitable primer or primer application
- Exceeding the overcoating time
picture courtesy of corrosionpedia.com