Designation:C757−16´1StandardSpecificationforNuclear-GradePlutoniumDioxidePowderforLightWaterReactors1ThisstandardisissuedunderthefixeddesignationC757;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Editoriallycorrected6.4inOctober2016.INTRODUCTIONThisspecificationisintendedtoprovidethenuclearindustrywithageneralstandardforplutoniumdioxide(PuO2)powder.ItrecognizesthediversityofmanufacturingmethodsbywhichPuO2powdersareproducedandthemanyspecialrequirementsforchemicalandphysicalcharacterizationthatmaybeapplicableforaparticularMixedOxide(MOX,thatis(U,Pu)O2)fuelpelletmanufacturingprocessorimposedbytheenduserofthepowderindifferentlightwaterreactors.Itis,therefore,anticipatedthatthebuyermaysupplementthisspecificationwithmorestringentoradditionalrequirementsforspecificapplications.1.Scope1.1ThisspecificationcoversnucleargradePuO2powder.ItappliestoPuO2ofvariousisotopiccompositionsasnormallypreparedbyin-reactorneutronirradiationofnaturalorslightlyenricheduraniumorbyin-reactorneutronirradiationofrecycledplutoniummixedwithuranium.1.2Thereisnodiscussionoforprovisionforpreventingcriticalityincidents,norarehealthandsafetyrequirements,theavoidanceofhazards,orshippingprecautionsandcontrolsdiscussed.Observanceofthisspecificationdoesnotrelievetheuseroftheobligationtobeawareofandconformtoallapplicableinternational,national,orfederal,state,andlocalregulationspertainingtopossessing,shipping,processing,orusingsourceorspecialnuclearmaterial.ForexamplesintheU.S.Government,relevantdocumentsareCodeofFederalRegulations,Title10NuclearSafetyGuide,U.S.AtomicEnergyCommissionReportTID-70162,and“HandbookofNuclearSafety”,H.K.Clark,U.S.AtomicEnergyCommis-sionReport,DP-5322.1.3ThePuO2shallbeproducedbyaqualifiedprocessandinaccordancewithaqualityassuranceprogramapprovedbytheuser.1.4T...
