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ANSI/ASTM F1273-1997 油罐防火通气孔规范

作者:标准资料网 时间:2024-05-17 06:16:33  浏览:9183   来源:标准资料网
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【英文标准名称】:SpecificationforTankVentFlameArresters
【原文标准名称】:油罐防火通气孔规范
【标准号】:ANSI/ASTMF1273-1997
【标准状态】:现行
【国别】:美国
【发布日期】:1997
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:火焰扩散;联锁装置;槽
【英文主题词】:flamepropagation;tanks;interlocks
【摘要】:Thisspecificationprovidestheminimumrequirementsfordesign,construction,performance,andtestingoftankventflamearresters.Thisspecificationisintendedforflamearrestersprotectingsystemscontainingvaporsofflammableorcombustibleliquidswherevaportemperaturesdonotexceed60?C.Thetestmediadefinedin9.1.1canbeusedexceptwherearrestersprotectsystemshandlingvaporswithamaximumexperimentalsafegap(MESG)below0.9mm.Flamearrestersprotectingsuchsystemsmustbetestedwithappropriatemedia(thesamevapororamediahavingaMESGnogreaterthanthevapor).VariousgasesandtheirrespectiveMESGarelistedinTable1.Note1-FlamearrestersmeetingthisspecificationalsocomplywiththeminimumrequirementsoftheInternationalMaritimeOrganization,MaritimeSafetyCommitteeCircularNo.373(MSC/Circ.373/Rev.1).Thevaluesstatedineitherinch-poundorSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportions,Sections8and9,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Thisstandardshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse
【中国标准分类号】:C80
【国际标准分类号】:13_220_01
【页数】:
【正文语种】:英语


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【英文标准名称】:Officemachines;documentcopyingmachines;minimuminformationtobespecified
【原文标准名称】:办公技术和数据技术.办公室用复印机.最低数据
【标准号】:DIN9783-1985
【标准状态】:作废
【国别】:德国
【发布日期】:1985-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:复印机;信息;格式(纸);办公室设备;复制设备;照相复制机;办公机器;技术数据单;油印机;特性
【英文主题词】:properties;officeequipment;information;forms(paper);officemachines;duplicatingmachines;photocopyingmachines;technicaldatasheets;copyingequipment;reproductionmachines
【摘要】:
【中国标准分类号】:N47;Y54
【国际标准分类号】:5453
【页数】:8P;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodforComparativeTrackingIndexofElectricalInsulatingMaterials
【原文标准名称】:电绝缘材料比较漏电痕迹指数的标准试验方法
【标准号】:ASTMD3638-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:电气工程;电气绝缘;电气测试;绝缘件;测试;跟踪系数
【英文主题词】:CTI;comparativetrackingindex;tracking;contamination;trackingresistance
【摘要】:Electricalequipmentcanfailasaresultofelectricaltrackingofinsulatingmaterialthatisexposedtovariouscontaminatingenvironmentsandsurfaceconditions.ThereareanumberofASTMandothertestsdesignedtoquantifybehaviorofmaterials,especiallyatrelativelyhighvoltages.Thismethodisanacceleratedtestwhichatrelativelylowtestvoltages,providesacomparisonoftheperformanceofinsulatingmaterialsunderwetandcontaminatedconditions.Thecomparativetrackingindexisnotrelateddirectlytothesuitableoperatingvoltageinservice.Whenorganicelectricalinsulatingmaterialsaresubjectedtoconductioncurrentsbetweenelectrodesontheirsurfaces,manyminutetree-likecarbonaceouspathsortracksaredevelopedneartheelectrodes.Thesetracksareorientedrandomly,butgenerallypropagatebetweentheelectrodesundertheinfluenceoftheappliedpotentialdifference.Eventuallyaseriesoftracksspanstheelectrodegap,andfailureoccursbyshortingoftheelectrodes.Theconditionsspecifiedhereinareintended,asinothertrackingtestmethods,toproduceaconditionconducivetotheformationofsurfacedischargesandpossiblesubsequenttracking.Testconditionsarechosentoreproduciblyandconvenientlyaccelerateaprocess;forthisreason,theyrarelyreproducethevariedconditionsfoundinactualservice.Therefore,whiletrackingtestsservetodifferentiatematerialsundergivenconditions,resultsoftrackingtestscannotbeusedtoinfereitherdirectorcomparativeservicebehaviorofanapplicationdesign.Rather,trackingtestresultsprovideatoolforjudgingthesuitabilityofmaterialsforagivenapplication.Thesuitabilitycanonlybeverifiedthroughtestingthedesigninactualenduseorunderconditionswhichsimulateenduseascloselyaspossible.1.1Thistestmethodevaluatesinashortperiodoftimethelow-voltage(upto600V)trackresistanceorcomparativetrackingindex(CTI)ofmaterialsinthepresenceofaqueouscontaminants.1.2Thevaluesstatedinmetric(SI)unitsaretoberegardedasstandard.Theinch-poundequivalentsofthemetricunitsareapproximate.1.3ThisstandardistechnicallyequivalenttotheversionofIECPublication112citedin.However,the2007versionofIEC60112FourthEditionyieldsnumericalCTIvaluesthatareverylikelytodiffersignificantlyfromthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:K15
【国际标准分类号】:29_035_01
【页数】:5P.;A4
【正文语种】:



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