1、Designation:C757161Standard Specification forNuclear-Grade Plutonium Dioxide Powder for Light WaterReactors1This standard is issued under the fixed designation C757;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last rev
2、ision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorially corrected 6.4 in October 2016.INTRODUCTIONThis specification is intended to provide the nuclear industry with a general stand
3、ard for plutoniumdioxide(PuO2)powder.It recognizes the diversity of manufacturing methods by which PuO2powdersare produced and the many special requirements for chemical and physical characterization that maybe applicable for a particular Mixed Oxide(MOX,that is(U,Pu)O2)fuel pellet manufacturing pro
4、cessor imposed by the end user of the powder in different light water reactors.It is,therefore,anticipatedthat the buyer may supplement this specification with more stringent or additional requirements forspecific applications.1.Scope1.1 This specification covers nuclear grade PuO2powder.Itapplies t
5、o PuO2of various isotopic compositions as normallyprepared by in-reactor neutron irradiation of natural or slightlyenriched uranium or by in-reactor neutron irradiation ofrecycled plutonium mixed with uranium.1.2 There is no discussion of or provision for preventingcriticality incidents,nor are heal
6、th and safety requirements,theavoidance of hazards,or shipping precautions and controlsdiscussed.Observance of this specification does not relieve theuser of the obligation to be aware of and conform to allapplicable international,national,or federal,state,and localregulations pertaining to possessi
7、ng,shipping,processing,orusing source or special nuclear material.For examples in theU.S.Government,relevant documents are Code of FederalRegulations,Title 10 Nuclear Safety Guide,U.S.AtomicEnergy Commission Report TID-70162,and“Handbook ofNuclear Safety”,H.K.Clark,U.S.Atomic Energy Commis-sion Repo
8、rt,DP-5322.1.3 The PuO2shall be produced by a qualified process andin accordance with a quality assurance program approved bythe user.1.4 The values stated in SI units are to be regarded as thestandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its
9、 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:3B243 Terminology of Powder MetallurgyC697 Test Methods for Chemical,Mass S
10、pectrometric,andSpectrochemical Analysis of Nuclear-Grade PlutoniumDioxide Powders and PelletsC859 Terminology Relating to Nuclear MaterialsC1233 Practice for Determining Equivalent Boron Contentsof Nuclear MaterialsC1274 Test Method for Advanced Ceramic Specific SurfaceArea by Physical AdsorptionC1
11、295 Test Method for Gamma Energy Emission fromFission and Decay Products in Uranium Hexafluoride andUranyl Nitrate SolutionC1770 Test Method for Determination of Loose and TappedBulk Density of Plutonium OxideE105 Practice for Probability Sampling of Materials1This specification is under the jurisdi
12、ction of ASTM Committee C26 onNuclear Fuel Cycle and is the direct responsibility of Subcommittee C26.02 on Fueland Fertile Material Specifications.Current edition approved April 1,2016.Published April 2016.Originallyapproved in 1974.Last previous edition approved in 2011 as C757 06(2011)1.DOI:10.15
13、20/C0757-16E01.2Available from Superintendent of Documents,U.S.Government PrintingOffice,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20402.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volum
14、e information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.2 ASME Standard:ASME NQA-1 QualityAssurance Requirements for NuclearFacility Applications42.3 U.S.Government D
15、ocuments:Code of Federal Regulations,Title 10,Nuclear SafetyGuide,U.S.Atomic Energy Commission Report TID-70162“Handbook of Nuclear Safety,”Clark,H.K.,U.S.AtomicEnergy Commission Report,DP-53222.4 ISO Standard:ISO 8300 Determination of Pu Content in Plutonium Diox-ide(PuO2)of Nuclear Grade Quality,G
16、ravimetricMethod4ISO 9161 Uranium Dioxide PowderDetermination of Ap-parent Density and Tap DensityISO 13463 Nuclear-grade Plutonium Dioxide Powder forFabrication of Light Water Reactor MOX FuelGuidelines to Help in the Definition of a Product Speci-fication3.Terminology3.1 DefinitionsDefinitions of terms are as given in Termi-nologies B243 and C859.4.Isotopic Content4.1 Concentrations and homogeneity ranges of the pluto-nium(Pu)shall be as specified by the buyer.4.2 The isotopic composition of t
