1、Designation:C80913Standard Test Methods forChemical,Mass Spectrometric,and SpectrochemicalAnalysis of Nuclear-Grade Aluminum Oxide and AluminumOxide-Boron Carbide Composite Pellets1This standard is issued under the fixed designation C809;the number immediately following the designation indicates the
2、 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 chemical,mass
3、spectrometric,and spectrochemical analysis of nuclear-grade aluminum oxide and aluminum oxide-boron carbidecomposite pellets to determine compliance with specifications.1.2 The analytical procedures appear in the following order:SectionsBoron by Titrimetry and ICP OES7 to 16Separation of Boron for M
4、ass Spectrometry17 to 22Isotopic Composition by Mass Spectrometry23 to 26Separation of Halides by Pyrohydrolysis27 to 30Chloride and Fluoride by Ion-Selective Electrode31 to 33Chloride,Bromide,and Iodide by Amperometric Microtitrimetry34 to 36Trace Elements by Emission Spectroscopy37 to 49Keywords50
5、1.3 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 appl
6、ica-bility of regulatory limitations prior to use.(For specificprecautionary statements,see Section 5.)2.Referenced Documents2.1 ASTM Standards:2C784 Specification for Nuclear-Grade Aluminum Oxide-Boron Carbide Composite PelletsC785 Specification for Nuclear-GradeAluminum Oxide Pel-letsC791 Test Met
7、hods for Chemical,Mass Spectrometric,andSpectrochemical Analysis of Nuclear-Grade Boron Car-bideC799 Test Methods for Chemical,Mass Spectrometric,Spectrochemical,Nuclear,and Radiochemical Analysis ofNuclear-Grade Uranyl Nitrate SolutionsD1193 Specification for Reagent WaterE115 Practice for Photogra
8、phic Processing in Optical Emis-sion Spectrographic Analysis(Withdrawn 2002)3E116 Practice for Photographic Photometry in Spectro-chemical Analysis(Withdrawn 2002)33.Significance and Use3.1 Aluminum oxide pellets are used in a reactor core asfiller or spacers within fuel,burnable poison,or control r
9、ods.Inorder to be suitable for this purpose,the material must meetcertain criteria for impurity content.These test methods aredesigned to show whether or not a given material meets thespecifications for these items as described in SpecificationC785.3.1.1 Impurity content is determined to ensure that
10、 themaximum concentration limit of certain impurity elements isnot exceeded.3.2 Aluminum oxide-boron carbide composite pellets areused in a reactor core as a component in neutron absorber rods.In order to be suitable for this purpose,the material must meetcertain criteria for boron content,isotopic
11、composition,andimpurity content as described in Specification C784.3.2.1 The material is assayed for boron to determinewhether the boron content is as specified by the purchaser.3.2.2 Determination of the isotopic content of the boron ismade to establish whether the10B concentration is in compli-anc
12、e with the purchasers specifications.3.2.3 Impurity content is determined to ensure that themaximum concentration limit of certain impurity elements isnot exceeded.1These test methods are under the jurisdiction of ASTM Committee C26 onNuclear Fuel Cycle and are the direct responsibility of Subcommit
13、tee C26.03 onNeutron Absorber Materials Specifications.Current edition approved Jan.1,2013.Published January 2013.Originallyapproved in 1980.Last previous edition approved in 2007 as C809 94(2007).DOI:10.1520/C0809-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM
14、Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,W
15、est Conshohocken,PA 19428-2959.United States1 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,whe
16、re such specifications are available.4Other 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,referenceto water shall be understood to mean reagent water conformingto Specification D1193,Type III.5.Safety Precautions5.1 Many laboratories have established safety regulationsgoverning the use of hazardous chemicals and equipment.Theusers
