UL 1469-2006 回流专用止回阀的阀身强度和液压损失率试验
时间:2024-05-14 19:24:56 来源: 标准资料网 作者：标准资料网 阅读：9367
【英文标准名称】:Strengthofbodyandhydraulicpressurelosstestingofbackflowspecialcheckvalves
【原文标准名称】:回流专用止回阀的阀身强度和液压损失率试验
【标准号】:UL1469-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006-12-07
【实施或试行日期】:
【发布单位】:美国保险商实验所(UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:止回阀;设计;防火;水压;作标记;性能;管道;管道系统;压降;生产控制;规范(验收);材料强度;试验;阀门;输水管道
【英文主题词】:
【摘要】:
【中国标准分类号】:J16
【国际标准分类号】:23_100_40
【页数】:
【正文语种】:英语
【英文标准名称】:Poly(VinylChloride)SheetRoofing
【原文标准名称】:聚氯乙烯屋面板
【标准号】:ASTMD4434-1995
【标准状态】:作废
【国别】:美国
【发布日期】:1995
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:施工材料;屋顶;塑料;屋面油毡;建筑;聚氯乙烯;防水材料;屋顶层
【英文主题词】:constructionmaterials;roofcoverings;roofs;construction;plastics;roofingfelts;polyvinylchloride;waterproofingmaterials
【摘要】:
【中国标准分类号】:Q17
【国际标准分类号】:91_060_20
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforAcceleratedLeachTestforDiffusiveReleasesfromSolidifiedWasteandaComputerProgramtoModelDiffusive,FractionalLeachingfromCylindricalWasteForms
【原文标准名称】:固化废料中扩散释放物加速浸出试验,模型扩散的计算机程序和从圆柱形废料状态中分离淋滤的标准试验方法
【标准号】:ASTMC1308-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C26.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:accelerated;diffusion;leach;waste;Acceleratedleachtest;Computerprograms;Diffusive/fractionalleaching;Leachates/leaching;Models/modeling--environmental;Nuclearscrapandwastematerials;Solidifiedwaste;Wastematerials/processing/analysis
【摘要】:Thistestmethodcanbeusedtomeasurethereleaseofacomponentfromacylindricalsolidifiedwasteformintowateratthereferencetemperatureof20x00B0;Candatelevatedtemperaturesthatacceleratetherateandextentofleachingrelativetothevaluesmeasuredat20x00B0;C.Thistestmethodcanbeusedto:Comparereleasesofwastecomponentsfromvarioustypesofsolidificationagentsandformulations.Determinethediffusioncoefficientsforthereleaseofwastecomponentsfromwasteformsataspecifictemperature.Promotegreaterextentsofreactionthancanbeachievedunderexpectedserviceconditionswithinalaboratorytimeframetoprovidegreaterconfidenceinmodeleddiffusivereleases.Determinethetemperaturedependenceofdiffusiverelease.Fittingtheexperimentalresultswithamechanisticmodelallowsdiffusivereleasestobeextrapolatedtolongtimesandtofull-scalewasteformsunderthefollowingconstraints:Resultsofthistestmethodaddressanintrinsicpropertyofamaterialandshouldnotbepresumedtorepresentreleasesinspecificdisposalenvironments.Testscanbeconductedunderconditionsthatrepresentaspecificdisposalenvironment(forexample,byusingarepresentativegroundwater)todetermineaneffectivediffusioncoefficientforthoseconditions.Projectionsofreleasesoverlongtimesrequiresthatthewasteformmatrixremainstable,whichmaybedemonstratedbythebehaviorofthespecimeninALTsatelevatedtemperatures.ExtrapolationsintimeandscalearelimitedtovaluesthatcorrespondtothemaximumCFLvalueobtainedinanacceleratedtest.Themechanismmustbethesameatalltemperaturesusedintheextrapolation.Thesamemodelthatdescribestheresultsoftestsconductedatelevatedtemperaturesmustalsodescribetheresultsoftestsrunatthereferencetemperatureof20x00B0;C.1.1Thistestmethodprovidesproceduresformeasuringtheleachratesofelementsfromasolidifiedmatrixmaterial,determiningifthereleasesarecontrolledbymassdiffusion,computingvaluesofdiffusionconstantsbasedonmodels,andverifyingprojectedlong-termdiffusivereleases.Thistestmethodisapplicabletoanymaterialthatdoesnotdegradeordeformduringthetest.1.1.1Ifmassdiffusionisthedominantstepintheleachingmechanism,thentheresultsofthistestcanbeusedtocalculatediffusioncoefficientsusingmathematicaldiffusionmodels.Acomputerprogramdevelopedforthatpurposeisavailableasacompaniontothistestmethod(Note1).1.1.2Itshouldbeverifiedthatleachingiscontrolledbydiffusionbyameansotherthananalysisoftheleachtestsolutiondata.Analysisofconcentrationprofilesofspeciesofinterestnearthesurfaceofthesolidwasteformafterthetestisrecommendedforthispurpose.1.1.3Potentialeffectsofpartitioningonthetestresultscanbeidentifiedthroughmodeling,althoughfurthertestingandanalysesarerequiredtodeterminethecauseofpartitioning(forexample,ifitoccursduringproductionofthematerialorasaresultofleaching).1.2Themethodisamodificationofothersemi-dynamictestssuchastheIAEAtest(1)andtheANS16.1LeachTestwhereinelevatedtemperaturesareusedtoacceleratediffusivereleasetoanextentthatwouldonlybereachedafterverylongtimesatlowertemperatures.Thisapproachprovidesamechanisticbasisforcalculatingdiffusivereleasesatrepository-relevanttemperaturesoverlongtimes,providedthattheleachingmechanismdoesnotchangewithtemperature.1.2.1Testscanbeconductedatelevatedtemperature......
【中国标准分类号】:Z13
【国际标准分类号】:13_030_10
【页数】:14P.;A4
【正文语种】:英语