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【英文标准名称】:Thermalspraying-Powders-Composition,technicalsupplyconditions;GermanversionEN1274:2004
【原文标准名称】:热喷涂.粉末.成分、交货技术条件
【标准号】:EN1274-2004
【标准状态】:现行
【国别】:
【发布日期】:2005-02
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;试验;材料;分类系统;符号;名称与符号;交付;组分;粒度分选;粉末;化学性质;分析;金属粉末;物理性能;粒度;粒度;焊接工程;金属类别;交货条件;粒度分布;粒状材料;供货方式;热喷涂;作标记;材料的物理性质;金属喷镀;非金属的;金属的;化学成分;粒度测量
【英文主题词】:Acceptancespecification;Analysis;Chemicalcomposition;Chemicalproperties;Classificationsystems;Composition;Delivery;Deliveryconditions;Designations;Formonsupply;Grainsize;Grainsizing;Marking;Materials;Metalspraying;Metallic;Metallicpowders;Nonmetallic;Particlesizedistribution;Particlesizemeasurement;Particlesizes;Particulatematerials;Physicalproperties;Physicalpropertiesofmaterials;Powder;Schoopmetallizing;Symbols;Testing;Thermalspraying;Weldingengineering
【摘要】:
【中国标准分类号】:H70
【国际标准分类号】:25_220_20;77_160
【页数】:20P.;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforDeterminationofPlutoniumIsotopicCompositionbyGamma-RaySpectrometry
【原文标准名称】:用γ射线光谱法测定钚同位素成分的标准试验方法
【标准号】:ASTMC1030-2010
【标准状态】:现行
【国别】:
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:镅-241;量热法;γ射线光谱测定;同位素的;中子计数;无损检测;钚;特种核材料;铀;γ辐射核材料的应用;γ射线光谱测定法;锗探测器;同位素分析;钚元素
【英文主题词】:americium-241;calorimetry;gamma-rayspectrometry;isotopics;neutroncounting;nondestructiveassay;plutonium;specialnuclearmaterial;uranium;Gammaradiation--nuclearmaterials/applications;Gamma-rayspectrometry;Germaniumdetectors;Isoto
【摘要】:Thedeterminationofplutoniumisotopiccompositionbygamma-rayspectrometryisanondestructivetechniqueandwhenusedwithothernondestructivetechniques,suchascalorimetry(TestMethodC1458)orneutroncounting(TestMethodsC1207,C1316,C1493,andC1500),canprovideawhollynondestructiveplutoniumassaynecessaryformaterialaccountancyandsafeguardsneeds.Becausegamma-rayspectrometrysystemsaretypicallyautomated,theroutineuseofthetestmethodisfast,reliable,andisnotlaborintensive.Thetestmethodisnondestructive,requiresnosamplepreparation,anddoesnotcreatewastedisposalproblems.Thistestmethodassumesthatallplutoniuminthemeasureditemhasthesameisotopicdistribution,oftencalledisotopichomogeneity(see7.2.4and7.2.5).The242Puabundanceisnotmeasuredbythistestmethodandmustbeestimatedfromisotopiccorrelationtechniques,streamaverages,historicalinformation,orothermeasurementtechniques.Americium-241isadaughterproductof241Pu.The241Am/239Puatomratiocanalsobedeterminedbymeansofthistestmethod(assumingahomogeneousisotopicdistributionofplutoniumand241Am).Thedeterminationofthe241Am/239Puatomratioisnecessaryforthecorrectinterpretationofacalorimetricheatmeasurement.Theisotopiccompositionofagivenbatchoritemofplutoniumisanattributeofthatitemand,oncedetermined,canbeusedinsubsequentinventorymeasurementstoverifytheidentityofanitemwithinthemeasurementuncertainties.Themethodcanalsomeasuretheratioofothergamma-emittingisotopestoplutoniumassumingtheyhavethesamespatialdistributionastheplutoniumintheitem.Someofthesex201C;otherx201D;gamma-emittingisotopesincludeisotopesofuranium,neptunium,curium,cesium,andotherfissionproducts.Thesamemethodsofthisstandardcanbeusedtomeasuretheisotopiccompositionofuraniuminitemscontainingonlyuranium(3,4,5,6).1.1Thistestmethodisapplicabletothedeterminationofisotopicabundancesinisotopicallyhomogeneousplutonium-bearingmaterials.Thistestmethodmaybeapplicabletootherplutonium-bearingmaterials,someofwhichmayrequiremodificationstothedescribedtestmethod.1.2Theprocedureisapplicabletoitemscontainingplutoniummassesrangingfromafewtensofmilligramsuptothemaximumplutoniummassallowedbycriticalitylimits.1.3Measurablegammarayemissionsfromplutoniumcovertheenergyrangefromapproximately30keVtoabove800keV.K-X-rayemissionsfromplutoniumanditsdaughtersarefoundintheregionaround100keV.Thistestmethodhasbeenappliedtoallportionsofthisbroadspectrumofemissions.1.4Theisotopicabundanceofthe242Puisotopeisnotdirectlydeterminedbecauseithasnousefulgamma-raysignature.IsotopiccorrelationtechniquesmaybeusedtoestimateitsrelativeabundanceRefs(1)and(2).1.5Thistestmethodhasbeendemonstratedinroutineuseforisotopicabundancesrangingfrom99tox003C;50%239Pu.Thistestmethodhasalsobeenemployedforisotopicab......
【中国标准分类号】:F50
【国际标准分类号】:27_120_30
【页数】:8P.;A4
【正文语种】: