Designation:C1817−16StandardTestMethodforTheDeterminationoftheOxygentoMetal(O/M)RatioinSinteredMixedOxide((U,Pu)O2)PelletsbyGravimetry1ThisstandardisissuedunderthefixeddesignationC1817;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThispracticeisanalternativemethodtoTestMethodC698forthedeterminationoftheoxygen-to-metalatomratio(O/M)insinteredmixedoxidefuel(MOX)pellets.ThemethodpresentedinTestMethodC698isaone-stepthermogravimet-ricmethodfordeterminingO/MratioinsinteredMOXpowdersandpellets.AsstatedinTestMethodC698,thermo-gravimetricmethodsusingatwo-stepheatingcyclearealsosatisfactory(1,2).2Themethodpresentedinthistestmethodisatwo-stepheatingcyclemethod.ThistestmethodisapplicabletosinteredMOXpelletscontainingupto10weightpercentPuO2.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:3C698TestMethodsforChemical,MassSpectrometric,andSpectrochemicalAnalysisofNuclear-GradeMixedOx-ides((U,Pu)O2)C753SpecificationforNuclear-Grade,SinterableUraniumDioxidePowderC757SpecificationforNuclear-GradePlutoniumDioxidePowder,SinterableC833SpecificationforSintered(Uranium-Plutonium)Diox-idePelletsC859TerminologyRelatingtoNuclearMaterialsC1068GuideforQualificationofMeasurementMethodsbyaLaboratoryWithintheNuclearIndustryC1672TestMethodforDeterminationofUraniumorPluto-niumIsotopicCompositionorConcentrationbytheTotalEvaporationMethodUsingaThermalIonizationMassSpectrometerD1193SpecificationforReagentWaterD1356TerminologyRelatingtoSamplingandAnalys...
