Asset:  Offshore Structure, Onshore Structure, Pressure Vessel
Environmental Characteristic:  High Humidity
Industry:  Oil and Gas, Pipelines and Underground Systems, Energy Generation and Distribution, Water and Wastewater, Transportation Infrastructure, Maritime, Pulp and Paper, Misc. Corrosion
Process:  Surface Preparation
Substrate:  Copper, Brass, Stainless Steel, Aluminum, Misc. Alloys


Brush-off Blast Cleaning of Non-Ferrous Metals


SP 16 is intended for brush-off blast cleaning of coated or uncoated metal surfaces other than carbon steel prior to the application of a protective coating system. Surface preparation using this standard is intended to roughen and clean coated and uncoated non-ferrous metal substrates, including, but not limited to, galvanized surfaces, stainless steel, copper, aluminum, and brass. SP 16 requires the cleaned surface to be free of loose contaminants and loose coating as determined by visual inspection. A minimum surface profile of 19 micrometers (0.75 mil) on the bare metal surface is required. Intact coatings are required to be roughened to the degree specified in the project specification.