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Whenviewedwithoutmagnification,thesurfaceshallbefreeofallvisibleoil,grease,dust,dirt,millscale,rust,coating,oxides,AFUNCTION:Whitemetalblast cleaning(SSPC-SP5/NACENo)providesthegreatestdegreeofcleaning.Blastingtowhitemetalisthemostrigorouspreparationthatcanbespecified.This standardinvolvesblastingasteelsurfacewithabrasivemediauntilitachievesauniformwhiteorgrayappearance,FullDescriptionThisjointstandardcoversthe useofblastcleaningabrasivestoachieveadefineddegreeofcleaningofsteelsurfacesSSPC-SP5NACEWhiteMetalBlastCleanAwhitemetalblastwillremove allcoatings,millscale,rust,oxides,corrosionproducts,andallotherforeignproductsfromasteelAgain,accordingtotheSSPC,“loose”contaminantsarethose thatcan’tberemovedbyliftingo˜withadullputtyknifeThesurfaceshallbecompletelyfreeofallSSPC-SP5NACEWhiteMetalBlastCleaningtheuseofa stiffbristlebrushthemethodsspecifiedinSSPC-SP1orotheragreed-uponmethodsThemethodofsolventcleaningisintendedtoremove“allvisibleoil,grease, soil,drawingandcuttingcompounds,andallothersolublecontaminantsfromsteel.Forcompleteinstructions,refertoJointSurfacePreparationStandardSSPCSP5/NACESSPC-SP6/NACE–COMMERCIALBLASTCLEANINGACommercialBlastCleanedsurface,whenviewedwithoutmagnification,shouldbe freeofallvisibleoil,grease,dirt,dust,millscale,rust,paintSSPC-SPWhiteMetalBlastCleaning(NACENo)isastandardusedforwhitemetalblastcleaningput forthbytheSocietyforProtectiveCoatings(SSPC)andNACEinternationalstandardTheserequirementsincludetheendcondi-tionofthesurfaceandmaterials andproceduresnecessarytoachieveandverifytheendconditionAuthor:longlongCategory:Abrasive,Rust,Welding,Corrosion,Specification(Technical Standard)DOWNLOADPDFKBNACENo/SSPC-SPNACEInternationaliWhitemetalblastcleaningistobeusedtocleanunpaintedorpaintedsteel surfacespriortoapplyinghigh-performanceprotectivecoatingorliningsystemsNACENo/SSPC-SPWhiteMetalBlastCleaningReaffirmedinThisjointstandard practicedetailstheuseofblastcleaningabrasivestoachieveadefineddegreeofcleaningofsteelsurfacespriortotheapplicationofaprotectivecoatingorlining systemForewordThespecificationcallsfortheremovalofdustbeforesolventcleaningbyForewordItshouldbeusedwhenthehighestdegreeofblastcleaning isNACENo/SSPC-SPWhiteMetalBlastCleaningSurfacefreefrom:SSPC-SP5/NACEWhiteMetalBlastSSPC-SPWhiteMetalBlastCleaningThisjoint standardpracticedetailstheuseofblastcleaningabrasivestoachieveadefineddegreeofcleaningofsteelsurfacespriortotheapplicationofaWhitemetalblast cleaningprovidesagreaterdegreeofcleaningthannear-whitemetalblastcleaning(NACENo/SSPC-SP(1))Thedifferencebetweenawhitemetalblastanda near-whitemetalblastisthatawhitemetalblastremovesallofthecoating,millscale,rust,oxides,corrosionproducts,andotherforeignmatterfromthesurface ThisjointstandardcoverstherequirementsforwhitemetalblastcleaningofuncoatedorcoatedsteelsurfacesbytheuseofabrasivesThisjointstandardcovers theuseofblastcleaningabrasivestoachieveadefineddegreeofcleaningofsteelsurfacespriortotheapplicationofaprotectivecoatingorliningsystemSSPCSP1SolventCleaningsurfaces”NACENo/SSPC-SPNACEInternationali