ASTM_C_968_-_12.pdf

Designation:C96812Standard Test Methods forAnalysis of Sintered Gadolinium Oxide-Uranium DioxidePellets1This standard is issued under the fixed designation C968;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover procedures for the analysis ofsintered gadolinium oxide-uranium dioxide pellets to deter-mine compliance with specifications.1.2 The analytical procedures appear in the following order:SectionCarbon(Total)by Direct CombustionThermal Conductivity Method2C1408 Test Method for Carbon(Total)in Uranium Oxide Powdersand Pellets By Direct Combustion-Infrared Detection Method3Chlorine and Fluorine by Pyrohydrolysis Ion-Selective ElectrodeMethod4C1502 Test Method for Determination of Total Chlorine and Fluorinein Uranium Dioxide and Gadolinium Oxide3Gadolinia Content by Energy-Dispersive X-Ray Spectrometry4C1456 Test Method for Determination of Uranium or Gadolinium,orBoth,in Gadolinium Oxide-Uranium Oxide Pellets or by X-RayFluorescence(XRF)3Hydrogen by Inert Gas Fusion4C1457 Test Method for Determination of Total Hydrogen Content ofUranium Oxide Powders and Pellets by Carrier Gas Extraction3Isotopic Uranium Composition by Multiple-Filament Surface-Ionization Mass Spectrometric Method2C1413 Test Method for Isotopic Analysis of Hydrolysed UraniumHexafluoride And Uranyl Nitrate Solutions By Thermal IonizationMass Spectrometry3C1347 Practice for Preparation and Dissolution of Uranium Materialsfor Analysis3Nitrogen by DistillationNessler Reagent(Photometric)Method6 to 16Oxygen-to-Metal Ratio of Sintered Gadolinium Oxide-Uranium Diox-ide Pellets4C1430 Test Method for Determination of Uranium,Oxygen toUranium,and Oxygen to Metal(O/M)in Sintered Uranium Dioxideand Gadolinia-Uranium Dioxide Pellets by Atmospheric Equilibra-tion3Spectrochemical Determination of Trace Impurity Elements4C1517 Test Method for Determination of Metallic Impurities in Ura-nium Metal or Compounds by DC-Arc Emission Spectroscopy3Total Gas by Hot Vacuum Extraction2SectionCeramographic Determination of Free Gd2O3and Free UO2toEstimate the Homogeneity of(U,Gd)O2Pellets17 to 24Ceramographic Determination of Average Grain Size by LinearIntercept after Chemical Etching25 to 321.3 The values stated in SI units are to be regarded as thestandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3C922 Specification for Sintered Gadolinium Oxide-UraniumDioxide PelletsC1347 Practice for Preparation and Dissolution of UraniumMaterials for AnalysisC1408 Test Method for Carbon(Total)in Uranium OxidePowders and Pellets By Direct Combustion-Infrared De-tection MethodC1413 Test Method for Isotopic Analysis of HydrolyzedUranium Hexafluoride and Uranyl Nitrate Solutions byThermal Ionization Mass SpectrometryC1430 Test Method for Determination of Uranium,Oxygento Uranium(O/U),and Oxygen to Metal(O/M)inSintered Uranium Dioxide and Gadolinia-Uranium Diox-ide Pellets by Atmospheric EquilibrationC1456 Test Method for Determination of Uranium or Gado-linium(or both)in Gadolinium Oxide-Uranium OxidePellets or by X-Ray Fluorescence(XRF)C1457 Test Method for Determination of Total HydrogenContent of Uranium Oxide Powders and Pellets by CarrierGas ExtractionC1502 Test Method for Determination of Total Chlorine andFluorine in Uranium Dioxide and Gadolinium OxideC1517 Test Method for Determination of Metallic Impuritiesin Uranium Metal or Compounds by DC-Arc EmissionSpectroscopyD1193 Specification for Reagent WaterE112 Test Methods for Determining Average Grain Size1These test methods are under the jurisdiction of ASTM C26 on Nuclear FuelCycle and are the direct responsibility of C26.05 on Methods of Test.Current edition approved Jan.1,2012.Published February 2012.Originallyapproved in 1981.Last previous edition approved in 2006 as C968 06.DOI:10.1520/C0968-12.2Discontinued 1999.See C968 94.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4Discontinued 2005.See C968 99.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 E146 Methods of Chemical Analysis of Zirconium andZirconiumAlloys(Silicon,Hydrogen,and Copper)(With-drawn 1989)53.Significance and Use3.1 The test methods in this method are designed to showwhether a given material is in accordance with SpecificationC922.4.Reagents4.1 Purity of