ASTM C1219-2005(2009) 六氟化铀中砷含量的标准试验方法
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【英文标准名称】:StandardTestMethodsforArsenicinUraniumHexafluoride
【原文标准名称】:六氟化铀中砷含量的标准试验方法
【标准号】:ASTMC1219-2005(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:C26.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:arsenic;arsine;arsinegeneration;atomicabsorptionspectrometry;graphitefurnace;uraniumhexafluoride;uranylfluoride;Zeemanbackgroundcorrection;Uranylfluoride;Zeemanbackgroundcorrection;Arseniccontent--nuclearmaterials/applications;Arsi
【摘要】:ArseniccompoundsaresuspectedtocausecorrosioninsomematerialsusedinUF6handlingequipment.Arsenicoriginatesasacontaminantinfluorspar(CaF2)usedtoproduceanhydroushydrogenfluoridewhichisusedsubsequentlyintheproductionofUF6.ThesetestmethodsareusedtomeasurethearseniccontentinUO2F2solutionspreparedfromthehydrolysisofUF6fordeterminationofconformancetoSpecificationC787.1.1Thesetestmethodsareapplicabletothedeterminationoftotalarsenicinuraniumhexafluoride(UF6)byatomicabsorptionspectrometry.Twotestmethodsaregiven:TestMethodAx2014;ArsineGeneration-AtomicAbsorption(Sections5-10),andTestMethodBx2014;GraphiteFurnaceAtomicAbsorption(AppendixX1).1.2Thetestmethodsareequivalent.Thelimitofdetectionforeachtestmethodis0.1x03BC;gAs/gUwhenusingasamplecontaining0.5to1.0gU.TestMethodBdoesnothavethecompletecollectiondetailsforprecisionandbiasdatathusthemethodappearsasanappendix.1.3TestMethodAcoversthemeasurementofarsenicinuranylfluoride(UO2F2)solutionsbyconvertingarsenictoarsineandmeasuringthearsinevaporbyflameatomicabsorptionspectrometry.1.4TestMethodButilizesasolventextractiontoremovetheuraniumfromtheUO2F2solutionpriortomeasurementofthearsenicbygraphitefurnaceatomicabsorptionspectrometry.1.5BothinsolubleandsolublearsenicaremeasuredwhenUF6ispreparedaccordingtoTestMethodC761.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F46
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语
【英文标准名称】:Outlineofinvestigationforconcentratorphotovoltaicmodulesandassemblies
【原文标准名称】:聚光光伏模块和组件的调查大纲
【标准号】:ULSUBJECT8703-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011-01-27
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:1.1Theserequirementscoverconcentratorphotovoltaic(CPV)modulesandassembliesthatconcentratelightonatargetPVcell(s)foruseingeneralandrestrictedareasinaccordancewiththeunit’sinstallationinstructions.ACPVmodlueisdefinedasanyphotovoltaicmodulewhichusesartificiallyelevatedlevels(i.e.concentrated)ofsolarirradiancetoproduceelectricalenergy.1.2Theserequirementsaddressconcentratorphotovoltaic(CPV)modulesandassembliesintendedforinstallationinaccordancewiththeirinstallationinstructionsonorintegralwithbuildings,ortobefreestanding(i.e.groundmountedorotherwisenotattachedtobuildings),inaccordancewiththeNationalElectricalCode,NFPA70,andmodelbuildingcodes.1.3TheinstallationclassforCPVmodulesandassembliesidentifiestheintendedinstallationlocationaseithergeneralaccessareasdesignated“General,”orrestrictedaccessareasdesignated“Restricted.”Generalaccessunitsareabletobeinstalledinopenareasthatmaybecontactedbythegeneralpublic.Restrictedaccessunitsaretobeinstalledinareasthatpreventgeneralpublicaccesssuchasalockedandfencedinarea.1.4TheserequirementscoverCPVmodulesandassembliesintendedforuseinsystemswithamaximumsystemvoltageof1500V.Exception:CPVmodulesthatareconstructedintheflateplatemoduleformatasdefinedbytheStandardforFlat-PlatePhotovoltaicModulesandPanels,UL1703,andwithaconcentrationratioofnomorethan2timesshallbeevaluatedinaccordancewithalloftherequirementsinUL1703.
【中国标准分类号】:F12
【国际标准分类号】:
【页数】:58P.;A4
【正文语种】:英语
【英文标准名称】:StandardSpecificationforPolytetrafluoroethylene(PTFE)ResinProducedFromDispersion
【原文标准名称】:弥散产生的聚四氟乙烯(PTFF)树脂的标准规范
【标准号】:ASTMD4895-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D20.15
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:塑料;聚四氟乙烯
【英文主题词】:coagulateddispersionpolytetrafluoroethylene;fluoropolymers;polytetrafluoroethylene;PTFE
【摘要】:1.1Thisspecificationcoversdry-powderresinsofpolytetrafluoroethylene(PTFE)thathavebeenpreparedfromdispersionsofPTFEbymanufacturingtechniquesthatinvolvecontrolledcoagulationofthedispersion.Theseresinsaregenerallyknownas"f
【中国标准分类号】:G32
【国际标准分类号】:
【页数】:14P.;A4
【正文语种】: