QJ 1843A-1996 结构钢、不锈钢熔焊工艺规范
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基本信息
| 标准名称： | 结构钢、不锈钢熔焊工艺规范 |
| 中标分类： | 航空、航天 >> 航空、航天材料与工艺 >> 热加工工艺 |
| ICS分类： | 机械制造 >> 焊接、钎焊和低温焊 >> 焊接工艺 |
| 替代情况： | QJ 1843-90 |
| 发布日期： | 1996-03-20 |
| 实施日期： | 1995-03-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 14页 |
适用范围
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前言
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引用标准
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所属分类： 航空 航天 航空 航天材料与工艺 热加工工艺 机械制造 焊接 钎焊和低温焊 焊接工艺
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【英文标准名称】:Applianceleakage-currentinterrupters
【原文标准名称】:电器漏电中断器
【标准号】:UL943B-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011-08-17
【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】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Bifilar;Circuit-breakers;Circuits;Earthleakage;Interrupters(circuit-breakers);Interruptions;Leakagecurrent;Leakagecurrents
【摘要】:
【中国标准分类号】:K31
【国际标准分类号】:29_120_50
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforSamplingandCountingAirborneFibers,IncludingAsbestosFibers,intheWorkplace,byPhaseContrastMicroscopy(withandOptionofTransmissionElectronMicroscopy)
【原文标准名称】:用相位比对显微镜取样和计数车间内的空气纤维(包含石棉纤维)的标准实施规程
【标准号】:ASTMD7201-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:石棉;对比度;计数;电子显微镜;纤维;显微术;相;取样;传输;工作地点
【英文主题词】:airmonitoring;asbestos;fibers;membranefiltermethod;phasecontrastmicroscopy;samplingandanalysis;workplaceatmospheres
【摘要】:1.1Thispracticedescribesthedeterminationoftheconcentrationoffibers,expressedasthenumberofsuchfiberspermillilitreofair,usingphasecontrastmicroscopyandoptionallytransmissionelectronmicroscopytoevaluateparticulatematerialcollectedonamembranefilterinthebreathingzoneofanindividualorbyareasamplinginaspecificlocation.ThispracticeisbasedonthecoreproceduresprovidedintheInternationalOrganizationforStandardization(ISO)StandardISO8672(1),theNationalInstituteforOccupationalandHealth(NIOSH)ManualofAnalyticalMethods,NIOSH7400(2),andtheOccupationalSafetyandHealthAdministration(OSHA)MethodID160(3).Thispracticeindicatestheimportantpointswherethesemethodsdiffer,andprovidesinformationregardingthedifferences,whichwillallowtheusertoselectthemostappropriateprocedureforaparticularapplication.However,selectingportionsofproceduresfromdifferentpublishedmethodsgenerallyrequiresausertoreportthattheyhaveusedamodificationtoamethodratherthanclaimtheyhaveusedthemethodaswritten.1.2Thepracticeisusedforroutinedeterminationofanindexofoccupationalexposuretoairbornefibersinworkplaces.Workplacesareconsideredthoseplaceswhereworkersareexposedtoairbornefibersincludingasbestos.Additionalinformationonsamplingstrategies,samplecollection(includingcalibration)anduseofsampleresultsforasbestosabatementprojectsisprovidedinastandardPracticeforAirMonitoringforManagementofAsbestos-ContainingMaterials(WK8951)currentlybeingconsideredbyASTMsubcommitteeE06.24.Afurtherpracticehasbeenapprovedforthespecificpurposeofsamplingandcountingairbornefibersinminesandquarries(PracticeD7200),althoughthepracticehereinmayalsobeusedforthispurpose.Thecurrentpracticemaybeusedasameansofmonitoringoccupationalexposuretoasbestosfiberswhenasbestosfibersareknownaprioritobepresentintheairbornedust.Thepracticegivesanindexofairbornefiberconcentration.Thispracticemaybeusedinconjunctionwithelectronmicroscopy(SeeAppendixX1)forassistanceinidentificationoffibers.Thispracticemaybeusedforothermaterialssuchasfibrousglass,orman-mademineralfibersbyusingalternatecountingrules(seeAnnexA4).1.3Thispracticespecifiestheequipmentandproceduresforsamplingtheatmosphereinthebreathingzoneofanindividualandfordeterminingthenumberoffibersaccumulatedonafiltermembraneduringthecourseofanappropriately-selectedsamplingperiod.Thepracticemayalsobeusedtosampletheatmosphereinaspecificlocationorroomofabuilding(areasampling),wherethismaybehelpfulinassessingexposuretoworkershandlingfiber-containingproducts.1.4Theidealworkingrangeofthistestpracticeextendsfrom100fibers/mm178;to1300fibers/mm178;offilterarea.Fora1000-Lairsample,thiscorrespondstoaconcentrationrangefromapproximately0.04to0.5fiber/mL(orfiber/cm179;).Lowerandhigherrangesoffiberconcentrationcanbemeasuredbyreducingorincreasingthevolumeofaircollected.However,whenthispracticeisappliedtosamplingthepresenceofother,non-asbestosdust,theleveloftotalsuspendedparticulatemayimposeanupperlimittothevolumeofairthatcanbesampledifthefiltersproducedaretobeofappropriatefiberloadingforfibercounting.1.5UsersshoulddeterminetheirownlimitofdetectionusingtheprocedureinPracticeD6620.ForReferencetheNIOSH7400methodgivesthelimitofdetectionas7fibers/mm178;offilterarea.Fora1000Lairsample,thiscorrespondstoalimitofdetectionof0.0027fiber/mL(orfiber/cm179;).ForOSHAmethodID160thelimitofdetectionisgivenas5.5fibers/mm178;offilterarea.Fora1000Lairsample,thisc......
【中国标准分类号】:C70
【国际标准分类号】:13_040_30
【页数】:24P.;A4
【正文语种】:
【原文标准名称】:电器漏电中断器
【标准号】:UL943B-2011
【标准状态】:现行
【国别】:美国
【发布日期】:2011-08-17
【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】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Bifilar;Circuit-breakers;Circuits;Earthleakage;Interrupters(circuit-breakers);Interruptions;Leakagecurrent;Leakagecurrents
【摘要】:
【中国标准分类号】:K31
【国际标准分类号】:29_120_50
【页数】:
【正文语种】:英语
【英文标准名称】:StandardPracticeforSamplingandCountingAirborneFibers,IncludingAsbestosFibers,intheWorkplace,byPhaseContrastMicroscopy(withandOptionofTransmissionElectronMicroscopy)
【原文标准名称】:用相位比对显微镜取样和计数车间内的空气纤维(包含石棉纤维)的标准实施规程
【标准号】:ASTMD7201-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:石棉;对比度;计数;电子显微镜;纤维;显微术;相;取样;传输;工作地点
【英文主题词】:airmonitoring;asbestos;fibers;membranefiltermethod;phasecontrastmicroscopy;samplingandanalysis;workplaceatmospheres
【摘要】:1.1Thispracticedescribesthedeterminationoftheconcentrationoffibers,expressedasthenumberofsuchfiberspermillilitreofair,usingphasecontrastmicroscopyandoptionallytransmissionelectronmicroscopytoevaluateparticulatematerialcollectedonamembranefilterinthebreathingzoneofanindividualorbyareasamplinginaspecificlocation.ThispracticeisbasedonthecoreproceduresprovidedintheInternationalOrganizationforStandardization(ISO)StandardISO8672(1),theNationalInstituteforOccupationalandHealth(NIOSH)ManualofAnalyticalMethods,NIOSH7400(2),andtheOccupationalSafetyandHealthAdministration(OSHA)MethodID160(3).Thispracticeindicatestheimportantpointswherethesemethodsdiffer,andprovidesinformationregardingthedifferences,whichwillallowtheusertoselectthemostappropriateprocedureforaparticularapplication.However,selectingportionsofproceduresfromdifferentpublishedmethodsgenerallyrequiresausertoreportthattheyhaveusedamodificationtoamethodratherthanclaimtheyhaveusedthemethodaswritten.1.2Thepracticeisusedforroutinedeterminationofanindexofoccupationalexposuretoairbornefibersinworkplaces.Workplacesareconsideredthoseplaceswhereworkersareexposedtoairbornefibersincludingasbestos.Additionalinformationonsamplingstrategies,samplecollection(includingcalibration)anduseofsampleresultsforasbestosabatementprojectsisprovidedinastandardPracticeforAirMonitoringforManagementofAsbestos-ContainingMaterials(WK8951)currentlybeingconsideredbyASTMsubcommitteeE06.24.Afurtherpracticehasbeenapprovedforthespecificpurposeofsamplingandcountingairbornefibersinminesandquarries(PracticeD7200),althoughthepracticehereinmayalsobeusedforthispurpose.Thecurrentpracticemaybeusedasameansofmonitoringoccupationalexposuretoasbestosfiberswhenasbestosfibersareknownaprioritobepresentintheairbornedust.Thepracticegivesanindexofairbornefiberconcentration.Thispracticemaybeusedinconjunctionwithelectronmicroscopy(SeeAppendixX1)forassistanceinidentificationoffibers.Thispracticemaybeusedforothermaterialssuchasfibrousglass,orman-mademineralfibersbyusingalternatecountingrules(seeAnnexA4).1.3Thispracticespecifiestheequipmentandproceduresforsamplingtheatmosphereinthebreathingzoneofanindividualandfordeterminingthenumberoffibersaccumulatedonafiltermembraneduringthecourseofanappropriately-selectedsamplingperiod.Thepracticemayalsobeusedtosampletheatmosphereinaspecificlocationorroomofabuilding(areasampling),wherethismaybehelpfulinassessingexposuretoworkershandlingfiber-containingproducts.1.4Theidealworkingrangeofthistestpracticeextendsfrom100fibers/mm178;to1300fibers/mm178;offilterarea.Fora1000-Lairsample,thiscorrespondstoaconcentrationrangefromapproximately0.04to0.5fiber/mL(orfiber/cm179;).Lowerandhigherrangesoffiberconcentrationcanbemeasuredbyreducingorincreasingthevolumeofaircollected.However,whenthispracticeisappliedtosamplingthepresenceofother,non-asbestosdust,theleveloftotalsuspendedparticulatemayimposeanupperlimittothevolumeofairthatcanbesampledifthefiltersproducedaretobeofappropriatefiberloadingforfibercounting.1.5UsersshoulddeterminetheirownlimitofdetectionusingtheprocedureinPracticeD6620.ForReferencetheNIOSH7400methodgivesthelimitofdetectionas7fibers/mm178;offilterarea.Fora1000Lairsample,thiscorrespondstoalimitofdetectionof0.0027fiber/mL(orfiber/cm179;).ForOSHAmethodID160thelimitofdetectionisgivenas5.5fibers/mm178;offilterarea.Fora1000Lairsample,thisc......
【中国标准分类号】:C70
【国际标准分类号】:13_040_30
【页数】:24P.;A4
【正文语种】:
