What defines a surface covered with and rust according to SSPC-VIS1?

What defines a surface covered with and rust according to SSPC-VIS1?

• A. Grade A
• B. Grade B
• C. Grade C
• D. Grade D

Answer: (B)

SSPC-VIS 1 uses rust grades to describe the amount of oxide on a steel surface after blast cleaning. A surface with light rust—a thin, quickly forming film that appears after exposure to air but isn’t heavily corroded—is categorized as Grade B. This indicates some rust is present, but it’s typically removable with light cleaning and may be acceptable for many coating systems, depending on the spec. For context, Grade A means no rust or staining, Grade C indicates a moderate level of rust needing more cleaning, and Grade D denotes heavy rust or scale requiring re-blasting. So describing the surface as Grade B aligns with the idea of a surface covered with light rust as defined by SSPC-VIS 1.

SSPC-VIS 1 uses rust grades to describe the amount of oxide on a steel surface after blast cleaning. A surface with light rust—a thin, quickly forming film that appears after exposure to air but isn’t heavily corroded—is categorized as Grade B. This indicates some rust is present, but it’s typically removable with light cleaning and may be acceptable for many coating systems, depending on the spec. For context, Grade A means no rust or staining, Grade C indicates a moderate level of rust needing more cleaning, and Grade D denotes heavy rust or scale requiring re-blasting. So describing the surface as Grade B aligns with the idea of a surface covered with light rust as defined by SSPC-VIS 1.