What standard describes near-white abrasive blast cleaning free of contaminants except for 5% staining?

The standard that describes near-white abrasive blast cleaning, which allows for a maximum of 5% staining, is SSPC-SP 10. This standard is specifically designed for surface preparation before painting, ensuring that the surface is not only clean but also adequately prepared to enhance the adhesion of coatings.

Near-white metal is defined under this standard as a surface that is thoroughly cleaned, with only a minimal amount of staining, primarily consisting of rust discoloration that doesn’t interfere with the application of protective coatings. The goal is to remove all contaminants and provide a clean substrate for optimal paint performance.

Understanding the importance of SSPC-SP 10 in the context of surface preparation helps in ensuring high-quality paint jobs, especially in environments where corrosion resistance is critical, such as in maritime applications covered by NAVSEA standards.