EJ/T 339-1988 压水堆核电厂安全阀和卸压阀管设计准则

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【英文标准名称】:StandardPracticeforEvaluatingtheKineticBehaviorofIonExchangeResins
【原文标准名称】:离子交换树脂活性评价的标准惯例
【标准号】:ASTMD6302-1998(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:D19.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:anionresin;cationresin;condensatepolishing;ionexchange;kinetics;leakage;mixedbed;Anionexchangeresins;Cationresin;Condensatepolishing;High-puritywater;Ionexchangematerials/applications;Kineticbehavior/characteristics/parameters;M
【摘要】:Thispracticeisintendedtoevaluatechangesintheperformanceofionexchangeresinsusedinmixedbedsoperatingaspolishingsystemsforsolutionsoflowionicstrength,typically,x003C;10mg/Ldissolvedsolids,thatareintendedtoproduceveryhighpurityeffluents.Itisrecommendedthatwhennewresinsareinstalledinaplantitbeusedtoprovideabaselineagainstwhichthefutureperformanceofthatresincanbejudged.Theconditionsofthistestmustbelimitingkinetically,suchthatkineticleakage,andnotequilibriumleakage,istested.Thisleakageisinfluencedbyacombinationofinfluentflowvelocityandconcentration,aswellasbeddepth.Itisrecommendedthatthepracticebefollowedwiththeresinratio,flowrate,andinfluentqualityasindicated.Thedesignoftheapparatuspermitsothervariationstobeusedthatmaybemoreappropriatetothechemicalsusedinaspecificplantandthenatureofitscoolingwater,butthecautionsandlimitationsnotedinthepracticemustbeaccommodated.Itispossiblethatthecationresincouldexperiencekineticsproblems.Inmanycases,however,theanionresinsaremorelikelytoexperiencethetypesofdegradationorfoulingthatcouldleadtoimpairedkinetics.Testingoffieldanionandcationresinstogetherisanoption,especiallywhenhistoricdataonthemixedbedwillbecompiled.Recognize,however,thatmanyvariablescanbeintroduced,makingitdifficulttointerpretresultsortocomparetohistoricalornewresindataonseparatecomponents.ProvisionismadeforcalculationofthemasstransfercoefficientintheAppendixX1.Whensuchcalculationistobemade,afullwetsieveanalysis,asdescribedinTestMethodsD2187,alsoisrequired.Electronicparticlesizingmaybesubstitutedifitisreferencedbacktothewetsievemethod.Thispracticeisintendedtosupplement,notdisplace,otherindicatorsofresinperformance,suchasexchangecapacity,%regeneration,andserviceexperiencerecords.1.1Thispracticeisintendedtoevaluatechangesinkineticperformanceofionexchangeresinsusedinmixedbedstoproducehighpuritywater.Withinstrictlimitations,italsomaybeusedforcomparingresinofdifferenttypes.Thisstandarddoesnotseektomimicactualoperatingconditions.Specificchallengesolutionsandconditionsarespecified.Attheoptionoftheuser,otherconditionsmaybetested.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:71_100_80
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:Conveyorbelts-Electricalconductivity-Specificationandtestmethod
【原文标准名称】:输送带.导电率.规范和试验方法
【标准号】:BSENISO284-2003
【标准状态】:现行
【国别】:英国
【发布日期】:2003-08-13
【实施或试行日期】:2003-08-13
【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】:试验设备;规范(验收);抽样方法;采掘;表面导电性;输送带;橡胶技术;电气试验;抗静电;电导性;电阻;带式输送机;试验;电阻率;表面绝缘电阻;定义;皮带;织物层;规范;物料搬运设备;电阻率;电性能;尺寸
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesthemaximumelectricalresistanceofaconveyorbeltandthecorrespondingtestmethod.Thetestisintendedtoensurethatthebeltissufficientlyconductivetoavoidtheaccumulationofelectricalstaticchargewhichmaybedevelopedduringserviceuse.ThisInternationalStandardisnotsuitableorapplicabletolightconveyorbeltsasdescribedbyEN873t1],thestaticelectricalpropertiesofwhicharemeasuredbyEN1637P1.
【中国标准分类号】:J80
【国际标准分类号】:53_040_20
【页数】:16P;A4
【正文语种】:英语