ASTM E1114-2009 测定铱192工业射线源尺寸的标准试验方法
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【英文标准名称】:StandardTestMethodforDeterminingtheSizeofIridium-192IndustrialRadiographicSources
【原文标准名称】:测定铱192工业射线源尺寸的标准试验方法
【标准号】:ASTME1114-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E07.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cylinder(s);Iridium192;radiographicsource;referencesample;sourcesize;sphere;Focalsize;Gammaradiation;Geometricanalysis;Industrialradiographicfilmprocessing/testing;Iridium;Objecttofilmdistance;Opticalcomparator;Radiographic
【摘要】:Oneofthefactorsaffectingthequalityofaradiographicimageisgeometricunsharpness.Thedegreeofgeometricunsharpnessisdependentuponthesizeofthesource,thedistancebetweenthesourceandtheobjecttoberadiographed,andthedistancebetweentheobjecttoberadiographedandthefilmordigitaldetector.Thistestmethodallowstheusertodeterminethesizeofthesourceandtousethisresulttoestablishsourcetoobjectandobjecttofilmordetectordistancesappropriateformaintainingthedesireddegreeofgeometricunsharpness.Note18212;TheEuropeanstandardCENEN12579describesasimplifiedprocedureformeasurementofsourcesizesofIr-192,Co-60andSe-75.TheresultingsourcesizeofIr-192iscomparabletotheresultsobtainedbythistestmethod.1.1ThistestmethodcoversthedeterminationofthesizeofanIridium-192radiographicsource.ThedeterminationisbaseduponmeasurementoftheimageoftheIridiummetalsourceinaprojectionradiographofthesourceassemblyandcomparisontothemeasurementoftheimageofareferencesampleinthesameradiograph.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N78
【国际标准分类号】:19_100
【页数】:5P.;A4
【正文语种】:英语
【原文标准名称】:测定铱192工业射线源尺寸的标准试验方法
【标准号】:ASTME1114-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E07.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cylinder(s);Iridium192;radiographicsource;referencesample;sourcesize;sphere;Focalsize;Gammaradiation;Geometricanalysis;Industrialradiographicfilmprocessing/testing;Iridium;Objecttofilmdistance;Opticalcomparator;Radiographic
【摘要】:Oneofthefactorsaffectingthequalityofaradiographicimageisgeometricunsharpness.Thedegreeofgeometricunsharpnessisdependentuponthesizeofthesource,thedistancebetweenthesourceandtheobjecttoberadiographed,andthedistancebetweentheobjecttoberadiographedandthefilmordigitaldetector.Thistestmethodallowstheusertodeterminethesizeofthesourceandtousethisresulttoestablishsourcetoobjectandobjecttofilmordetectordistancesappropriateformaintainingthedesireddegreeofgeometricunsharpness.Note18212;TheEuropeanstandardCENEN12579describesasimplifiedprocedureformeasurementofsourcesizesofIr-192,Co-60andSe-75.TheresultingsourcesizeofIr-192iscomparabletotheresultsobtainedbythistestmethod.1.1ThistestmethodcoversthedeterminationofthesizeofanIridium-192radiographicsource.ThedeterminationisbaseduponmeasurementoftheimageoftheIridiummetalsourceinaprojectionradiographofthesourceassemblyandcomparisontothemeasurementoftheimageofareferencesampleinthesameradiograph.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N78
【国际标准分类号】:19_100
【页数】:5P.;A4
【正文语种】:英语
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