ASTM_C_889_-_11.pdf

Designation:C88911Standard Test Methods forChemical and Mass Spectrometric Analysis of Nuclear-Grade Gadolinium Oxide(Gd2O3)Powder1This standard is issued under the fixed designation C889;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 These test methods cover procedures for the chemicaland mass spectrometric analysis of nuclear-grade gadoliniumoxide powders to determine compliance with specifications.1.2 The analytical procedures appear in the following order:SectionsCarbon by Direct CombustionThermal Conductivity2C1408 Test Method for Carbon(Total)in Uranium OxidePowders and Pellets By Direct Combustion-Infrared Detec-tion Method3Total Chlorine and Fluorine by Pyrohydrolysis IonSelective Electrode4C1502 Test Method for Determination of Total Chlorine andFluorine in Uranium Dioxide and Gadolinium Oxide5Loss of Weight on Ignition7-13Sulfur by CombustionIodometric Titration2Impurity Elements by a Spark-Source Mass Spectrographic2C761 Test Methods for Chemical,Mass Spectrometric,Spec-trochemical,Nuclear,and Radiochemical Analysis of UraniumHexafluoride3C1287 Test Method for Determination of Impurities In Ura-nium Dioxide By Inductively Coupled Plasma Mass Spec-trometry3Gadolinium Content in Gadolinium Oxide by ImpurityCorrection14-171.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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.For specific hazardstatements,see Section 5.2.Referenced Documents2.1 ASTM Standards:3C761 Test Methods for Chemical,Mass Spectrometric,Spectrochemical,Nuclear,and Radiochemical Analysis ofUranium HexafluorideC888 Specification for Nuclear-Grade Gadolinium Oxide(Gd2O3)PowderC1287 Test Method for Determination of Impurities inNuclear Grade Uranium Compounds by InductivelyCoupled Plasma Mass SpectrometryC1408 Test Method for Carbon(Total)in Uranium OxidePowders and Pellets By Direct Combustion-Infrared De-tection MethodC1502 Test Method for Determination of Total Chlorine andFluorine in Uranium Dioxide and Gadolinium OxideD1193 Specification for Reagent Water3.Significance and Use3.1 Gadolinium oxide powder is used,with subsequentprocessing,in nuclear fuel applications,such as an addition touranium dioxide.These test methods are designed to determinewhether the material meets the requirements described inSpecification C888.3.1.1 The material is analyzed to determine whether itcontains the minimum gadolinium oxide content specified.3.1.2 The loss on ignition and impurity content are deter-mined to ensure that the weight loss and the maximumconcentration limit of specified impurity elements are notexceeded.4.Reagents4.1 Purity of ReagentsReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,1These test methods are under the jurisdiction of ASTM Committee C26 onNuclear Fuel Cycle and are the direct responsibility of Subcommittee C26.05 onMethods of Test.Current edition approved June 1,2011.Published June 2011.Originallyapproved in 1978.Last previous edition approved in 2006 as C889 06.DOI:10.1520/C0889-11.2Discontinued January 1999.See C88990.3For 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 March 2005.See C1408.5Discontinued March 2005.See C88990.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 where such specifications are available.6Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.4.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water as definedin Specification D1193.5.Hazards5.1 Proper precautions should be taken to prevent inhalationor ingestion of gadolinium oxide powders or dust duringgrinding or handling operations.5.2 Workers should observe precautions as specified invendor supplied Material Safety Data Sheets(MSDS).6.Sampling6.1 Criteria for sampling this material are given in Specifi-cation C888.CARBON BY DIRECT COMBUSTIONTHERMAL CONDUCTIVITYThis Test Method