DIN EN ISO 4256-1999 液化石油气.蒸汽压力测定.液化石油气法
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【英文标准名称】:Liquefiedpetroleumgases-Determinationofgaugevapourpressure-LPGmethod(ISO4256:1996);GermanversionENISO4256:1998
【原文标准名称】:液化石油气.蒸汽压力测定.液化石油气法
【标准号】:DINENISO4256-1999
【标准状态】:现行
【国别】:德国
【发布日期】:1999-01
【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】:液化气;试验;煤气;测定;压力测量(流体);液化石油气;蒸气压力;气体;物理试验;物理性能;试验;定义;定义;石油产品;石油产品
【英文主题词】:Definition;Definitions;Determination;Gases;Liquefiedgases;Liquefiedpetroleumgas;LPGmethod;Petroleumproducts;Physicalproperties;Physicaltesting;Pressuremeasurement(fluids);Testing;Tests;Vapourpressure
【摘要】:Thedocumentspecifiesamethodforthedeterminationofthegaugevapourpressureofliquefiedpetroleumgasproductsatatemperaturefrom35?uptoandincluding70?
【中国标准分类号】:E46
【国际标准分类号】:75_160_30
【页数】:11P.;A4
【正文语种】:德语
【英文标准名称】:Mechanicalvibrationandshock-Vibrationisolationofmachines-Informationfortheapplicationofsourceisolation(includesAmendmentA1:2008);EnglishversionofDINEN1299:2009-02
【原文标准名称】:机械振动和冲击.机械的隔振.对振动源隔振应用的信息
【标准号】:DINEN1299-2009
【标准状态】:现行
【国别】:德国
【发布日期】:2009-02
【实施或试行日期】:2009-02-01
【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】:应用;定义;排放;人类工效学;指导手册;绝缘件;机械振动;机械;测量;职业安全;建筑物的防护;人体保护;安全;机械安全;振动源隔振;振动;振动衰减;防振;振动注入;工作场所安全
【英文主题词】:Applications;Definition;Definitions;Emission;Ergonomics;Guidebooks;Insulations;Machinevibration;Machines;Measurement;Occupationalsafety;Protectionofbuildings;Protectionofpersons;Safety;Safetyofmachinery;Sourceisolation;Vibration;Vibrationdamping;Vibrationinsulation;Vibrationalimmission;Workplacesafety
【摘要】:ThisEuropeanStandardgivesguidelinestoensurethatmanufacturersofmachinesprovideadequateinformationonapplicationofvibrationisolationtoreducetherisksarisingfromvibrationgeneratedbytheirmachines.Guidelinesarealsoprovidedtoensurethatusersfurnishsufficientinformationregardingtheirapplicationstosuppliersofmachinesor,whereapplicable,tothesupplieroftheisolationsystem,toenabletheoptimumselectionanddesignofvibrationisolation.ThisEuropeanStandardisrestrictedtosourceisolation.Althoughthisstandardisprimarilyintendedfortheuseofnewmachines,itmaybeappliedtotheinstallationofusedmachines,too.ThisEuropeanStandardisaddressedtomanufacturersandinstallersofamachine,asaguidetodefinerelevantparametersforthechoiceandinstallationofavibrationisolationsystemtobeusedwiththemachine.NOTEThisEuropeanStandardmayalsobeappliedbyusersofmachinesalreadyinstalled,whouseorwishtousevibrationisolationtosolveavibrationproblemcausedbythemachine.ThisEuropeanStandardshallnotbeconsideredasamanualforthedesignorinstallationofanisolationsystem.ExamplesofelementsofvibrationisolationareshowninAnnexAonlyforinformation.
【中国标准分类号】:Z32
【国际标准分类号】:17_160
【页数】:22P.;A4
【正文语种】:英语
【英文标准名称】:StandardPracticeforFieldLeakTestingofPolyethylene(PE)PressurePipingSystemsUsingGaseousMediaUnderPressure(PneumaticLeakTesting)
【原文标准名称】:使用压力气体介质对聚乙烯(PE)压力管道系统进行现场渗漏试验的标准实施规程(气体渗漏试验)
【标准号】:ASTMF2786-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:F17.40
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:airtest;compressedairtest,pressure;fieldleaktest,;leaktest;polyethylenepipe;pneumaticleaktest
【摘要】:Ifrequiredbytheauthorityhavingjurisdiction,pressurizedgaseousmedialeaktestingmaybeconductedafterinstallationtodiscoverandcorrectleaksorfaultsinanewlyconstructedormodifiedpolyethylenepressurepipingsystembeforeplacingthesysteminservice.Leakageorfaultsusuallyoccuratconnections,joints,andmechanicalsealswheresealingunderpressureisrequired.Safetyisofparamountimportancewhenconductingpressurizedgaseousmedialeaktestsbecausetestingresultsincludenoleaks,leaks,suddenviolentrupture,orcatastrophicfailure.Systemsthatcontainlowerpressureratedornon-pressureratedcomponentsthatcannotbeisolatedorremovedfromexposuretotestpressure,orwheretemporarycapsorclosuresarenotpractical,arenotsuitablefortestinginaccordancewiththispractice.LeakageAllowance8212;Leakageisnotallowedforjointsincludingbutt,socketandsaddlefusion,electrofusion,andrestrainedgas-tightmechanicaljoints.See7.6.Othertypesofjoints,connections,orcomponentshavingsealsinthesystemmayhavealeakageallowance.Contactthejoint,connectionorcomponentmanufacturerforinformation.Poisson-EffectExpansionandContraction8212;Whentestpressureisappliedtoplasticpipingsystemsthathavefullyrestrainedjointssuchasheatfusion,electrofusion,boltedflanges,etc.,reductionofoveralllengthoranincreaseinlongitudinalstressresultsfromdiametricalexpansionofthepipe.Disjoining(pull-out)ofpartiallyrestrainedornon-restrainedconnectionsorjointssuchasbell-and-spigotjointshavinginsufficientresistancetopull-outstressorlengthreductionispossiblewhensuchjointsarein-linewiththetestsection.TopreventPoisson-effectdisjoining,takemeasuressuchasinstallingexternaljointrestraints(diametricalclampsandtie-rods)acrossin-linepartiallyrestrainedornon-restrainedjoints,installingin-linethrustanchorsattheendsoffullyrestrainedpipingsections,orisolatingafullyrestrainedtestsectionfrompipingwithnonrestrainedorpartiallyrestrainedjoints.Note38212;Atensilestressisappliedtoamaterialwillcauseelongationinthedirectionoftheappliedstress,andwillcauseadecreaseindimensionatrightanglestothedirectionoftheappliedstress.TheratioofdecreasetoelongationisthePoissonratio.Undertestpressure,pipingmaterialswillexpandslightlyindiameterandcontractinlengthslightlyaccordingtothePoissonratioofthematerial.1.1Thispracticeprovidesinformationonapparatus,safety,pre-testpreparationandproceduresforconductingfieldtestsofpolyethylenepressurepipingsystemsafterinstallationusinggaseousmediasuchasunodorizedinertnon-toxicgasorair,andapplyingpressuretodetermineifleaksexistinthesystem(pneumaticleaktesting).Thispracticeappliesonlytotestingtodiscoverleakage.Testingforotherpurposessuchastestingtoestablishoperatingpressureisbeyondthescopeofthispractice.1.2Thispracticedoesnotaddressleaktestingusingpressurizedliquids(hydrostatictesting).Forfieldleaktestingusingpressurizedliquids,seePracticeF2164.1.3Leaktestingwithpressurizedgaseousmediashallbeusedonlyifoneofthefollowingconditionsexists:1.3.1Thepipingsystemissodesignedthatitcannotbefilledwithaliquid,or1.3.2Thepipingsystemservicecannottoleratetracesofliquidtestingmedia.1.4Wherehydrostatictestingisspecifiedincontractdocumentsorbyt......
【中国标准分类号】:P94
【国际标准分类号】:23_040_20
【页数】:8P.;A4
【正文语种】:英语
