This standard is one of four separate standards that replace SSPC-SP 12/NACE No. 5, which has been withdrawn. SP WJ-1 contains requirements for cleaning metals to bare substrate using waterjet cleaning, including the required end condition of the surface and procedures and materials necessary to achieve the end condition. The other three standards in this set are SSPC-SP WJ-2/NACE WJ-2, SSPC-SP WJ-3/NACE WJ-3, and SSPC-SP WJ-4/NACE WJ-4.