SSPC VIS 4/NACE VIS 7

Shows a total of six (two uncoated and four previously coated) steel surfaces before and after waterjetting. Photographs illustrate four separate degrees of cleaning (WJ 1, WJ 2, WJ 3, and WJ 4) for each initial condition. Also contains photos that depict the appearance light, moderate, and heavy flash rust after cleaning; a written guide to the use of reference photographs; and additional explanatory notes. Cleanliness requirements for conditions shown are defined by the joint SSPC/NACE surface preparation specification for high- and ultrahigh-pressure water jetting (SSPC-SP 12/NACE No. 5). NOTE: The new SSPC-VIS 4 replaces the interim version published in 1998 [SSPC-VIS 4(I)].