The 5 Most important methods to measure external coating defects on pipelines (without excavation)
There are several above ground techniques with which it is suffucient to walk and measure coating defects over the entire lenght of the pipeline. A great advantage of these techniques is that you don’t need to perform destructive measurements or to excavate the pipeline. The 5 most common techniques are: Pearson technique Close Interval Potential […]
Is my coating system good for Cathodic Protection?
This mainly depended on the amount of electrons that can be passed through the coating system. This is defined as electrical conductivity. A coating systems that has a very high (electrical) resistance can be defined as an isolating coating system. Examples are asphalt/bitumen and polyethylene (PE) based coatings. On the other hand, there are coating […]
Surface preparation standards
Coating specifications should always incorporate or reference one of the written and/or visual/photographic surface preparation standards. Such standards exist to eliminate misinterpretation, questions, disagreement, related to the quality of surface preparation desired.The two most commonly used surface preparation standards are those published by the Steel Structures Painting Council (SSPC) and the National Association of Corrosion […]