"General This standard describes the use of waterjetting to achieve a defined degree of cleaning of surfaces prior to the application of a protective coating or lining system. These requirements include the end condition of the surface plus materials and procedures necessary to verify the end condition. This standard is limited in scope to the use of water only. This standard is written primarily for applications in which the substrate is carbon steel. However@ waterjetting can be used on nonferrous substrates such as bronze@ aluminum@ and other metals such as stainless steel. This standard does not address the cleaning of concrete. Cleaning of concrete is discussed in SSPC SP-13/NACE No. 6.2 Appendices A@ B@ and C give additional information on waterjetting equipment@ production rates@ procedures@ and principles. Visual Reference Photographs: SSPC-VIS 4/NACE VIS 7@ ""Guide and Reference Photographs for Steel Surfaces Prepared by Waterjetting@""3 provides color photographs for the various grades of surface preparation as a function of the initial condition of the steel. The latest issue of the reference photographs should be used."