What does SSPC-SP15 refer to in surface preparation standards?

SSPC-SP15 defines a standard for commercial grade power tool cleaning, focusing on the preparation of surfaces before the application of coatings. This standard outlines the methods for achieving a sufficient level of cleanliness using power tools to remove rust, old coatings, and other contaminants from the surface.

The standard emphasizes that while power tools are effective, they must be used properly to ensure that the prepared surface is adequately clean and roughened to ensure good adhesion of the subsequent coating. This level of cleaning is often considered necessary for commercial and industrial painting applications, where reliability and durability of coatings are crucial.

In context, other options address different levels and types of surface preparation. For example, brush-off blast cleaning specifically refers to a different metallic substrate treatment, while industrial blast cleaning pertains to a more rigorous method than what is cited in SSPC-SP15. The measurement of dry coat thickness, while relevant, is outside the parameters of surface preparation standards. Thus, the focus of SSPC-SP15 on commercial grade power tool cleaning makes it the correct choice in identifying this standard.