SSPC SP 7 (WAB)/NACE WAB-4

This SSPC/NACE joint standard defines the process for preparing a carbon steel surface to the Brush-Off degree of surface cleanliness using a wet abrasive blast (WAB) method of cleaning. This standard is intended for use by coating or lining specifiers, applicators, inspectors, or others whose responsibility is to define a standard degree of surface cleanliness for carbon steel surfaces to be achieved by wet abrasive blast cleaning.