Designation:D8145−18StandardPracticeforSamplingofGreenPetroleumCoke1ThisstandardisissuedunderthefixeddesignationD8145;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONGreenpetroleumcokeisabyproductofcertainoilrefiningtechnologiesbuthasmultipleuses,suchasasolidmineralfuelorakeyconstituentofmakinganodes.Thechemicalandphysicalcharacteristicsofgreenpetroleumcoke,particularlythemoisturecontent,arenotalwaysdistributedequallyinthedifferentsizedparticles.Assuch,thesamplingofgreenpetroleumcokemustfollowthegeneralsamplingprincipalsofcapturingtheparticlesizedistributionoftheconsignmentintothegrosssamplethatiscollectedtorepresentit.GreenpetroleumcokesamplinghasreliedonthesamplingstandardsforCoalandCokeunderASTMSubcommitteeD05.05forguidanceonhowtocollectandpreparesamples,inparticular,PracticeD2234/D2234MfortheCollectionofaGrossSampleofCoal,PracticeD2013/D2013MforthePreparationofCoalSamplesforAnalysis,andPracticeD346fortheCollectionandPreparationofCokeSamplesforLaboratoryAnalysishavebeenused,amongothers.Withthegrowinguseofmechanicalsamplingequipment,PracticeD7430fortheMechanicalSamplingofCoalhasbeenaddedtothemix.Theabovecitedstandardsareuseful,butdonotaccountforsomeoftheuniquecharacteristicsofpetroleumcoke,whichhasledtowidespreadconfusionastowhichpartsareapplicable,especiallyPracticeD346,whichisreallyusedforcokemadefromcoalandnotfrompetroleumrefining.Thispracticegivesguidelinesfortheuseronhowtosamplegreenpetroleumcoke.TheintentisnottowriteastandalonestandardforgreenpetroleumcokebuttodirecttheuserastohowtoapplytheD05.05coalstandardsalreadyinexistence.1.Scope1.1ThispracticeprimarilyreferencesPracticeD2234/D2234Mandappliesitssamplingprinciplestogreenpetro-leumcoke.Greenpetroleumcokeistypicallymorehomoge-neousthancoalandthispracticeprovidesspecificguidancefortheap...
