NF C26-113-1-1995 云母基绝缘材料规范.第3部分:专用材料规范.活页1:换向器隔板和材料
时间:2024-05-05 16:43:06 来源: 标准资料网 作者：标准资料网 阅读：8160
【英文标准名称】:Specificationforinsulatingmaterialsbasedonmica.Part3:specificationsforindividualmaterials.Sheet1:commutatorseparatorsandmaterials.
【原文标准名称】:云母基绝缘材料规范.第3部分:专用材料规范.活页1:换向器隔板和材料
【标准号】:NFC26-113-1-1995
【标准状态】:现行
【国别】:法国
【发布日期】:1995-09-01
【实施或试行日期】:1995-09-20
【发布单位】:法国标准化协会(FR-AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(验收);云母制品;绝缘材料;云母片;换向条;云母;一般条件;材料规范;电气工程
【英文主题词】:Commutatorbars;Commutators;Electricalengineering;Generalconditions;Insulatingmaterials;Laminatedmica;Materialsspecification;Mica;Micaceousproducts;Paper;Plastics;Specification(approval);Specifications
【摘要】:
【中国标准分类号】:K15
【国际标准分类号】:29_035_50
【页数】:10P.;A4
【正文语种】:其他
【英文标准名称】:Milkandmilkproducts-Determinationofnitrateandnitritecontents-Part2:Methodusingsegmentedflowanalyses(Routinemethod)
【原文标准名称】:乳和乳制品硝酸盐和亚硝酸盐含量的测定第2部分：分层流分析法(常规法)
【标准号】:ISO14673-2-2001
【标准状态】:作废
【国别】:国际
【发布日期】:2001-11
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC34
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;牛奶;硝酸盐含量;亚硝酸盐含量;乳制品;化学分析和试验;含量测定;流量分析
【英文主题词】:
【摘要】:
【中国标准分类号】:X16
【国际标准分类号】:67_100_01
【页数】:20P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasurementof235UFractionUsingEnrichmentMeterPrinciple
【原文标准名称】:用同位素浓缩度计原理测定铀235微粒的标准试验方法
【标准号】:ASTMC1514-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:
【英文主题词】:enrichment;UF6;uranium,Calibration--nuclearanalysisinstrumentation;Enrichmentmeterprinciple;Lowresolutiondetector;Nondestructiveevaluation(NDE)--nuclearapplications;Uranium-235
【摘要】:Theenrichmentmeterprincipleprovidesanondestructivemeasurementofthe235Ufractionofuranium-bearingitems.Samplingisnotrequiredandnowasteisgenerated,minimizingexposuretohazardousmaterialsandresultinginreducedsamplingerror.Thismethodreliesonafixedandcontrolledgeometry.Theuranium-bearingmaterialsinthemeasureditemsandcalibrationreferencematerialsusedforcalibrationmustfillthedetectorfieldofview.Useofalowresolutiondetector(forexample,NaIdetector)tomeasureuraniumwith235Ufractionapproximately10%whichiscontainedinathin-walledcontainercanprovidearapid(typically100s),easilyportablemeasurementsystemwithprecisionof0.6%andbiasoflessthan1%.Useofahighresolutiondetector(forexample,high-puritygermanium)canprovidemeasurementwithaprecisionbetterthan0.2%andabiaslessthan1%withina300-smeasurementtimewhenmeasuringuraniumwith235Ufractionintherangeof0.711%orabovewhichiscontainedinthin-walledcontainers.Inordertoobtainoptimumresultsusingthismethod,thechemicalcompositionoftheitemmustbewellknown,thecontainerwallmustpermittransmissionofthe185.7keVgamma-ray,andtheuranium-bearingmaterialwithintheitemmustbeinfinitelythickwithrespecttothe185.7keVgamma-ray.Allitemsmustbeinidenticalcontainersormusthaveaknowncontainerwallthicknessandcomposition.Itemstobemeasuredmustbehomogeneouswithrespecttoboth235Ufractionandchemicalcomposition.Whenmeasuringitems,usinglow-resolutiondetectors,inthin-walledcontainersthathavenotreachedsecularequilibrium(morethanabout120daysafterprocessing),eitherthemethodshouldnotbeused,additionalcorrectionsshouldbemadetoaccountfortheageoftheuranium,orhigh-resolutionmeasurementsshouldbeperformed.Themethodisoftenusedasaenrichmentverificationtechnique.1.1Thistestmethodcoversthequantitativedeterminationofthefractionof235Uinuraniumusingmeasurementofthe185.7keVgamma-rayproducedduringthedecayof235U.1.2Thistestmethodisapplicabletoitemscontaininghomogeneousuranium-bearingmaterialsofknownchemicalcompositioninwhichthecompoundisconsideredinfinitelythickwithrespectto185.7keVgamma-rays.1.3Thistestmethodcanbeusedfortheentirerangeof235Ufractionasaweightpercent,fromdepleted(0.2%235U)tohighlyenriched(97.5%235U).1.4Measurementofitemsthathavenotreachedsecularequilibriumbetween238Uand234Thmaynotproducethestatedbiaswhenlow-resolutiondetectorsareusedwiththecomputationalmethodlistedinAnnexA2.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandardmayinvolvehazardousmaterials,operations,andequipment.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:F46
【国际标准分类号】:
【页数】:8P.;A4
【正文语种】:英语