【英文标准名称】:ULStandardforSafetyPower-OperatedPumpsforAnhydrousAmmoniaandLP-GasNinthEdition
【原文标准名称】:使用无水液氨和液化石油气的动力操纵泵
【标准号】:UL51-2002
【标准状态】:现行
【国别】:美国
【发布日期】:2002
【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】:规范(验收);设计;液氨;搬运;运输;抽油装置;储存;液化石油气;电泵;氨
【英文主题词】:electricalpumps;transport;liquefiedpetroleumgas;specification(approval);ammonia;pumpinginstallation;handling;storage;liquidammonia;design
【摘要】:Coverspower-operatedpumpsforanhydrousammoniaandliquefiedpetroleumgas(LP-Gas)foruseinliquidtransferoperationsinnonrefrigeratedsystemsininstallationscoveredbythefollowingStandards:SafetyRequirementsfortheStorageandHandlingofAnhydrousAmmonia,ANSI/K61.1.StorageandHandlingofLiquefiedPetroleumGases,ANSI/NFPANo.58.SUMMARYOFCHANGESTOUL51UL51wasoriginallylistedforcommentintheFebruary16,1996issueofStandardsAction.Onlytherevisedtextoutlinedbelowisbeingresubmittedduetosubstantivechangesinthetext.Therevisionsinclude:changesbasedonthereplacementoftheMercurousNitrateImmersionTestwitha10-DayMoistAmmoniaAirStressCrackingTest;changesduetothereplacementoftheoxygenbombtestwiththeair-ovenagingtest;reinstatementofrequirementsforproductiontests.(Revised)5.11Apartmadeofdrawnbrassormachinedfrombrassrodshallbecapableofwithstanding,withoutcracking,the10-DayMoistAmmoniaAirStressCrackingTest,Section19A.(DeletedSection)19Mercurous-NitrateImmersionTest(Added)19A10-DayMoistAmmoniaAirStressCrackingTest19A.1Afterbeingsubjectedtotheconditionsdescribedin19A.2C19A.4,abrasspartcontainingmorethan15percentzincshallshownoevidenceofcrackingwhenexaminedusing25Xmagnification.19A.2Eachsampleistobesubjectedtothephysicalstressesnormallyimposedonorwithinapartastheresultofassemblywithothercomponents.Suchstressesaretobeappliedtothesamplepriortoandmaintainedduringthetest.Sampleswiththreads,intendedtobeusedforinstallingtheproductinthefield,aretohavethethreadsengagedandtightenedtothetorquespecifiedinTable14.1.Teflontapeorpipecompoundisnottobeusedonthethreads.19A.3Threesamplesaretobedegreasedandthencontinuouslyexposedinasetpositionfortendaystoamoistammonia-airmixturemaintainedinaglasschamberapproximately12by12by12inches(305by305by305mm)havingaglasscover.19A.4Approximately600mlofaqueousammoniahavingaspecificgravityof0.94istobemaintainedatthebottomoftheglasschamberbelowthesamples.Thesamplesaretobepositioned1-1/2inches(38.1mm)abovetheaqueousammoniasolutionandsupportedbyaninerttray.Themoistammonia-airmixtureinthechamberistobemaintainedatatmosphericpressureandatatemperatureof34"2EC(93"3.5EF).(Revised)20.1.3Apartmadeofsyntheticrubbershallnotcrackorshowvisibleevidenceofdeteriorationfollowingexposurefor70hourstoatemperatureof100"2EC(212"3.5EF)inanair-circulatingoven.(Revised)21.2Eachpumpistobeoperatedanddeterminedtobeinconditionbeforeshipment.
【中国标准分类号】:E98
【国际标准分类号】:23_080
【页数】:24P.;A4
【正文语种】:英语


【英文标准名称】:TerminalEquipment(TE)-Processabledata-Filetransfer;EnglishversionETS300075:1994
【原文标准名称】:终端设备.可处理数据.文件传送
【标准号】:DINETS300075-1994
【标准状态】:现行
【国别】:德国
【发布日期】:1994-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:协议;文件传送;终端;电气工程;终端装置;可视电文;用户电视电报;电信;文件;数据处理
【英文主题词】:Communicationequipment;Dataprocessing;Datatransfer;Electricalengineering;Filetransfer;Files;Protocols;Telecommunication;Telecommunications;Teletext;Terminaldevices;Terminals;Videotex
【摘要】:Thisdocumentdealswiththeprotocolfordatafiletransferinaeuropeanvideotexsystem.Thefilesmaycontaincomputersoftwareorotherprocessabledata.Theprotocollcanbeappliedforthetransmissionbetweenterminalandsysteminbothdirections.
【中国标准分类号】:L63
【国际标准分类号】:33_160_99
【页数】:137P.;A4
【正文语种】:德语