【英文标准名称】:Glazingforbuildings-Safetyrelatedtohumanimpact
【原文标准名称】:建筑物门窗玻璃.第4部分:人体碰撞安全性
【标准号】:BS6262-4-1994
【标准状态】:作废
【国别】:英国
【发布日期】:1994-08-15
【实施或试行日期】:1994-08-15
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑物;建筑系统构件;门;机械环境影响(对人体);事故预防;防护屏蔽;安全措施;玻璃;塑料;选择;门窗玻璃;冲击强度;事故;最大;尺寸;作标记;薄板材;性能;设计
【英文主题词】:
【摘要】:
【中国标准分类号】:Q33
【国际标准分类号】:81_040_20
【页数】:16P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAnalysisofPolychlorinatedBiphenylsinInsulatingLiquidsbyGasChromatography
【原文标准名称】:气相色谱法分析无机绝缘油中多氯联苯含量的标准试验方法
【标准号】:ASTMD4059-2000(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:D27.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:gaschromatography;PCBs;polychlorinatedbiphenyls;transformerinsulatingliquids;transformermineraloils;transformersiliconeliquids;Electricalinsulatingliquids;Electricalinsulatingoils;Gaschromatography(GC)--insulatingmaterials/appli
【摘要】:UnitedStatesgovernmentalregulationsmandatethatelectricalapparatusandelectricalinsulatingfluidscontainingPCBbehandledanddisposedofthroughspecificprocedures.TheproceduretobeusedforaparticularapparatusorquantityofinsulatingfluidisdeterminedbythePCBcontentofthefluid.Theresultsofthisanalyticaltechniquecanbeusefulinselectingtheappropriatehandlinganddisposalprocedure.Quantificationinthistechniquerequiresapeak-by-peakcomparisonofthechromatogramofanunknownspecimenwiththatofstandardAroclortestspecimensobtainedunderidenticalconditions.TheamountofPCBproducingeachpeakinthestandardchromatogramshallbeknownindependently.ThetechniquedescribedisbasedondataforstandardchromatogramsofAroclors1242,1254,and1260obtainedusingspecificchromatographiccolumnpackingmaterialsandoperatingconditions.RelevantchromatogramsarereproducedinFig.1,Fig.2,andFig.3,forisothermalpackedcolumnsandinFigs.X4.1throughX4.3)fortemperatureprogrammedmega-borecapillarycolumns.Eachpeakisidentifiedbyitsretentiontimerelativetothatofastandard.ThetypesandamountsofPCBassociatedwitheachpeakhavebeendeterminedbymassspectroscopyandaregiveninTable1,Table2,andTable3.Otherchromatographicoperatingconditions,andinparticular,othercolumnpackingmaterials,maygivedifferentseparations.Thedatagiveninthetablesshouldnotbeusedifchromatogramsofthestandardsdiffersignificantlyfromthoseshowninthefigures.Thepeaksinsuchstandardchromatogramsshallbeindependentlyidentifiedandquantified.DifferentisomersofPCBwiththesamenumberofchlorinesubstituentscancausesubstantiallydifferentresponsesfromECdetectors.MixturesofPCBcontainingthesameamountofPCB,butwithadifferentratioofisomers,cangivequitedifferentchromatograms.ThistechniqueiseffectiveonlywhenthestandardPCBmixturesandthosefoundintheunknowntestspecimenarecloselyrelated.Aroclors1242,1254,and1260areadequatestandardsbecausetheyhavebeenfoundtobethemostcommonPCBcontaminantinelectricalinsulatingoils.1.1Thistestmethoddescribesaquantitativedeterminationoftheconcentrationofpolychlorinatedbiphenyls(PCBs)inelectricalinsulatingliquidsbygaschromatography.ItalsoappliestothedeterminationofPCBpresentinmixturesknownasaskarels,usedaselectricalinsulatingliquids.1.2ThePCBmixturesknownasAroclorswereusedintheformulationofthePCB-containingaskarelsmanufacturedintheUnitedStates.ThistestmethodmaybeappliedtothedeterminationofPCBsininsulatingliquidscontaminatedbyeitherindividualAroclorsormixturesofAroclors.ThistechniquemaynotbeapplicabletothedeterminationofPCBsfromothersourcesofcontamination.1.3TheprecisionandbiasofthistestmethodhavebeenestablishedonlyforPCBconcentrationsinelectricalinsulatingmineraloilsandsilicones.Theuseofthistestmethodhasnotbeendemonstratedforallinsulatingfluids.Someinsulatingliquids,suchashalogenatedhydrocarbons,interferewiththedetectionofPCBsandcannotbetestedwithoutpretreatment.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E38
【国际标准分类号】:29_040_10
【页数】:11P.;A4
【正文语种】:英语
基本信息
标准名称: | 钛合金扩口式拧入式弯管接头 |
英文名称: | Elbow screwed-onto 45 degree titianium alloy flared tube |
中标分类: |
航空、航天 >>
航空器与航天器零部件 >>
管件、卡箍、密封件 |
发布日期: | 2003-02-24 |
实施日期: | 2003-02-24 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
页数: | 7页 |
适用范围
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前言
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目录
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引用标准
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所属分类: 航空 航天 航空器与航天器零部件 管件 卡箍 密封件