本联合标准是四个标准中的第一个，这些标准描述了在使用喷水清洗准备涂覆涂层或衬里时，涂覆或未涂覆金属基材的表面清洁度的不同程度。本标准描述了清洁耐腐蚀基材，其目的是清除所有锈迹和其他腐蚀产物、涂层和氧化皮。它包括喷水清洗之前和之后以及涂层或衬里应用之前的程序，以及带有注释的附录、评估闪锈的方法、喷水设备和操作参数。 本标准由SSPC和NACE 276工作组共同维护。

This joint standard is the first of four standards that describes the different degreees of surface cleanliness of coated or uncoated metallic substrates when using waterjet cleaning in preparation of applying a coating or lining. This standard describes Clean to Bear Substrate, in which the objective is to remove every trace of rust and other corrosion products, coating, and mill scale. It includes procedures before and following a waterjet cleaning and immediately prior to coating or lining application, and appendices with explanatory notes, methods of assessing flash rust, and waterjetting equipment and operation parameters. This standard is maintained jointly by the SSPC and NACE Task Group 276.