The Society for Protective Coatings (SSPC) and National Association of Corrosion Engineers (NACE) International. Approved January 1, 2007. 5 р. This joint standard covers the use of blast cleaning abrasives to achieve a defined degree of cleaning of steel surfaces prior to the application of a protective coating or lining system. This standard is intended for use by coating or lining specifiers, applicators, inspectors, or others who may be responsible for defining a standard degree of surface cleanliness.