NF E66-018-1979 莫氏锥柄带槽长机用铰刀
时间:2024-05-10 00:21:51 来源: 标准资料网 作者：标准资料网 阅读：8357
【英文标准名称】:LONGFLUTEDMACHINEREAMERS,MORSETAPERSHANKS.
【原文标准名称】:莫氏锥柄带槽长机用铰刀
【标准号】:NFE66-018-1979
【标准状态】:作废
【国别】:法国
【发布日期】:1979-12
【实施或试行日期】:1979-12-11
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:锥形铰刀;规范;尺寸;尺寸公差;机动工具;名称与符号;刀具柄;铰刀;机床;莫氏锥柄
【英文主题词】:
【摘要】:
【中国标准分类号】:J41
【国际标准分类号】:25_100_30
【页数】:3P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforNondestructiveAssayofSpecialNuclearMaterialinLowDensityScrapandWastebySegmentedPassiveGamma-RayScanning
【原文标准名称】:分段无源γ射线扫描法对低密度废料及残渣中特殊核材料进行无损检验的标准试验方法
【标准号】:ASTMC1133-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:核技术;γ辐射;放射性废物;无损检验;试验
【英文主题词】:nondestructiveassay;segmentedgamma-rayscanning;specialnuclearmaterial
【摘要】:Segmentedgamma-rayscanningprovidesanondestructivemeansofmeasuringthenuclidecontentofscrapandwastewherethespecificnatureofthematrixandthechemicalformandrelationshipbetweenthenuclideandmatrixmaybeunknown.Theprocedurecanserveasadiagnostictoolthatprovidesaverticalprofileoftransmissionandnuclideconcentrationwithintheitem.Samplepreparationisgenerallylimitedtogoodwaste/scrapsegregationpracticesthatproducerelativelyhomogeneousitemsthatarerequiredforanysuccessfulwaste/inventorymanagementandassayscheme,regardlessofthemeasurementmethodused.Also,processknowledgeshouldbeused,whenavailable,aspartofawastemanagementprogramtocomplementinformationonsampleparameters,containerproperties,andtheappropriatenessofcalibrationfactors.1.1Thistestmethodcoversthetransmission-correctednondestructiveassay(NDA)ofgamma-rayemittingspecialnuclearmaterials(SNMs),mostcommonly235U,239Pu,and241Am,inlow-densityscraporwaste,packagedincylindricalcontainers.ThemethodcanalsobeappliedtoNDAofothergamma-emittingnuclidesincludingfissionproducts.High-resolutiongamma-rayspectroscopyisusedtodetectandmeasurethenuclidesofinterestandtomeasureandcorrectforgamma-rayattenuationinaseriesofhorizontalsegments(collimatedgammadetectorviews)ofthecontainer.Correctionsarealsomadeforcountinglossesoccasionedbysignalprocessinglimitations(1-3).1.2TherearecurrentlyseveralsystemsinuseorunderdevelopmentfordeterminingtheattenuationcorrectionsforNDAofradioisotopicmaterials(4-8).Arelatedtechnique,tomographicgamma-rayscanning(TGS),isnotincludedinthistestmethod(9,10).1.2.1ThistestmethodwillcovertwoimplementationsoftheSegmentedGammaScanning(SGS)procedure:(1)IsotopeSpecific(Mass)Calibration,theoriginalSGSprocedure,usesstandardsofknownradionuclidemassestodeterminedetectorresponseinamassversuscorrectedcountratecalibrationthatappliesonlytothosespecificradionuclidesforwhichitiscalibrated,and(2)EfficiencyCurveCalibration,analternativemethod,typicallyusesnon-SNMradionuclidesourcestodeterminesystemdetectionefficiencyvs.gammaenergyandtherebycalibrateforallgamma-emittingradionuclidesofinterest(11).ThesetwomethodswillbecoveredindetailintheremainderofthemainbodyofthistestmethodandAnnexA1.1.2.1.1EfficiencyCurveCalibration,overtheenergyrangeforwhichtheefficiencyisdefined,hastheadvantageofprovidingcalibrationformanygamma-emittingnuclideforwhichhalf-lifeandgammaemissionintensitydataareavailable.1.3Theassaytechniquemaybeapplicabletoloadingsuptoseveralhundredgramsofnuclideina208-L(55-gal)drum,withmorerestrictedrangestobeapplicabledependingonspecificpackagingandcountingequipmentconsiderations.1.4Measuredtransmissionvaluesmustbeavailableforuseincalculationofsegment-specificattenuationcorrectionsattheenergiesofanalysis.1.5Arelatedmethod,SGSwithcalculatedcorrectionfactorsbasedonsamplecontentanddensity,isnotincludedinthisstandard.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection8.
【中国标准分类号】:F40
【国际标准分类号】:13_030_30;71_040_50
【页数】:16P.;A4
【正文语种】: