BS EN 60 335-2-44-1991 家用和类似用途电器的安全规范.第2部分:特殊要求.第44节:电烫衣机规范
时间:2024-05-17 02:28:19 来源: 标准资料网 作者：标准资料网 阅读：8572
【英文标准名称】:Specificationforsafetyofhouseholdandsimilarelectricalappliances.Particularrequirements.Electricironers
【原文标准名称】:家用和类似用途电器的安全规范.第2部分:特殊要求.第44节:电烫衣机规范
【标准号】:BSEN60335-2-44-1991
【标准状态】:作废
【国别】:英国
【发布日期】:1991-08-30
【实施或试行日期】:
【发布单位】:英国标准学会(BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:耐久试验;家用设备;电气安全;压力试验;元部件;设计;作标记;熨烫设备;安全措施;家庭安全;稳定性;家用电器;防护电气设备;加热试验;电驱动装置;熨烫机;温升
【英文主题词】:
【摘要】:
【中国标准分类号】:Y63
【国际标准分类号】:
【页数】:24P;A4
【正文语种】:英语
【英文标准名称】:SafeguardingConstruction,Alteration,andDemolitionOperations
【原文标准名称】:建筑物改建及拆除的安全防护
【标准号】:ANSI/NFPA241-1989
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】:
【英文标准名称】:StandardGuideforX-RayComptonScatterTomography
【原文标准名称】:X射线康普顿散射断层摄影的标准指南
【标准号】:ASTME1931-1997(2003)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:(Guide)
【标准水平】:()
【中文主题词】:康普顿散射断层摄影;康普顿散射断层摄影;放射的;射线检验的;分层成像;计算机断层摄影;背散射
【英文主题词】:back-scatter;comptonscattertomography;computedtomography;CST;radiologic;radioscopic;sliceimage;tomography
【摘要】:PrincipalAdvantageofComptonScatterTomography8212;TheprincipaladvantageofCSTistheabilitytoperformthree-dimensionalX-rayexaminationwithouttherequirementforaccesstothebacksideoftheexaminationobject.CSToffersthepossibilitytoperformX-rayexaminationthatisnotpossiblebyanyothermethod.TheCSTsub-surfacesliceimageisminimallyaffectedbyexaminationobjectfeaturesoutsidetheplaneofexamination.Theresultisaradioscopicimagethatcontainsinformationprimarilyfromthesliceplane.Scatteredradiationlimitsimagequalityinnormalradiographicandradioscopicimaging.ScatterradiationdoesnothavethesamedetrimentaleffectuponCSTbecausescatterradiationisusedtoformtheimage.Infact,themoreradiationtheexaminationobjectscatters,thebettertheCSTresult.LowsubjectcontrastmaterialsthatcannotbeimagedwellbyconventionalradiographicandradioscopicmeansareoftenexcellentcandidatesforCST.VeryhighcontrastsensitivitiesandexcellentspatialresolutionarepossiblewithCSTtomography.Limitations8212;Aswithanynondestructivetestingmethod,CSThasitslimitations.Thetechniqueisusefulonreasonablythicksectionsoflow-densitymaterials.Whilea25mm[1in.]depthinaluminumor50mm[2in.]inplasticisachievable,theexaminationdepthisdecreaseddramaticallyasthematerialdensityincreases.Properimageinterpretationrequirestheuseofstandardsandexaminationobjectswithknowninternalconditionsorrepresentativequalityindicators(RQIs).Theexaminationvolumeistypicallysmall,ontheorderofafewcubicinchesandmayrequireafewminutestoimage.Therefore,completelyexamininglargestructureswithCSTrequiresintensivere-positioningoftheexaminationvolumethatcanbetime-consuming.Aswithotherpenetratingradiationmethods,theradiationhazardmustbeproperlyaddressed.1.1Purpose8212;ThisguidecoversatutorialintroductiontofamiliarizethereaderwiththeoperationalcapabilitiesandlimitationsinherentinX-rayComptonScatterTomography(CST).AlsoincludedisabriefdescriptionofthephysicsandtypicalhardwareconfigurationforCST.1.2Advantages8212;X-rayComptonScatterTomography(CST)isaradiologicnondestructiveexaminationmethodwithseveraladvantagesthatinclude:1.2.1TheabilitytoperformX-rayexaminationwithoutaccesstotheoppositesideoftheexaminationobject;1.2.2TheX-raybeamneednotcompletelypenetratetheexaminationobjectallowingthickobjectstobepartiallyexamined.Thickexaminationobjectsbecomepartoftheradiationshieldingtherebyreducingtheradiationhazard;1.2.3Theabilitytoimageexaminationobjectsubsurfacefeatureswithminimalinfluencefromsurfacefeatures;1.2.4Theabilitytoobtainhigh-contrastimagesfromlowsubjectcontrastmaterialsthatnormallyproducelow-contrastimageswhenusingtraditionaltransmittedbeamX-rayimagingmethods;and1.2.5Theabilitytoobtaindepthinformationforexaminationobjectfeaturestherebyprovidingthree-dimensionalexamination.Theabilitytoobtaindepthinformationpresupposestheuseofahighlycollimateddetectorsystemhavinganarrowangleofacceptance.1.3Applications8212;Thisguidedoesnotspecifywhichexaminationobjectsaresuitable,orunsuitable,forCST.Aswithmostnondestructiveexaminationtechniques,CSTishighlyapplicationspecifictherebyrequiringthesuitabilityofthemethodtobefirstdemonstratedintheapplicationlaboratory.ThisguidedoesnotprovideguidanceinthestandardizedpracticeorapplicationofCSTtechniques.NoguidanceisprovidedconcerningtheacceptanceorrejectionofexaminationobjectsexaminedwithCST.......
【中国标准分类号】:H26
【国际标准分类号】:35_240_80
【页数】:14P.;A4
【正文语种】: