Designation:D6781−02(Reapproved2021)StandardGuideforCarbonReactivation1ThisstandardisissuedunderthefixeddesignationD6781;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thissetofguidelinesisofferedtousersofactivatedcarbontoprovideabetterunderstandingofthereactivationprocessandsomeoftheproblemsassociatedwithsendingcarbonoffsiteortoathirdpartyforthermalreactivation.Itisnotintendedtoserveasanoperatingprocedureforthosecompaniesorpersonsthatactuallyoperatereactivationfacili-ties.Thisistruebecauseeachreactivationfacilityisunique,usingdifferenttypesoffurnaces,usingvariousoperatingandperformancerequirements,andrunningspentactivatedcar-bonseitherinaggregatepools(combiningdifferentsuppliersofcarbon)orincustomsegregatedlots.Additionally,proprietaryinformationforeachfacilityrelativetotheparticularequip-mentusedcannotbeaddressedinageneralsetofguidelines.1.2Thisstandarddoesnotpurporttoaddressanyenviron-mentalregulatoryconcernsassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatepracticesforreactivationpriortouse.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D2652TerminologyRelatingtoActivatedCarbon2.2OtherStandard:AWWAB605-99StandardforReactivationofGranularActivatedCarbon3.Terminology3.1Definitions:3....
