SAE AS22759/48 Wire, Electrical, Fluoropolymer-Insulated, Crosslinked Modified ETFE, Low Fluoride, Lightweight, 80 Micro

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Product Code:SAE AS22759/48
Title:Wire, Electrical, Fluoropolymer-Insulated, Crosslinked Modified ETFE, Low Fluoride, Lightweight, 80 Microinch Silver-Coated Copper, 200 °C, 600 Volt
Issuing Committee:Ae8-D Wire And Cable Committee
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【英文标准名称】:PracticeforUseoftheEthanol-ChlorobenzeneDosimetrySystem
【原文标准名称】:使用乙醇氯苯剂量测定系统的实施规程
【标准号】:ANSI/ASTME1538-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-07-10
【实施或试行日期】:2007-07-10
【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】:剂量测定;乙醇;γ辐射;电离辐射;辐照;光子;实施规程
【英文主题词】:Dosimetry;Ethanol;Gamma-radiation;Ionizingradiation;Irradiation;Photons;Practice
【摘要】:Thispracticecoversthepreparation,handling,testing,andprocedureforusingtheethanol-chlorobenzenedosimetrysystemtomeasureabsorbeddoseinmaterialsirradiatedbyphotonsandelectronsintermsofabsorbeddoseinwater.Thesystemconsistsofadosimeterandappropriateanalyticalinstrumentation.Forsimplicity,thesystemwillbereferredtoastheECBsystem.Itisclassifiedasareferencestandarddosimeter(seeGuideE1261).ThispracticedescribesthetitrationanalysisasastandardreadoutprocedurefortheECBdosimeter.Otherapplicablereadoutmethods(spectrophotometric,oscillometric)aredescribedinAppendixesX1andX2.Thispracticeappliesonlytogammarays,Xrays,andhigh-energyelectrons.Thispracticeappliesprovidedthefollowingaresatisfied:Theabsorbeddoserangeshallbefrom10Gyto2MGy(1).Theabsorbeddoseratedoesnotexceed10Gys-1(2).Forradionuclidegamma-raysources,theinitialphotonenergyshallbegreaterthan0.6MeV.Forbremsstrahlungphotons,theinitialenergyoftheelectronsusedtoproducethebremsstrahlungphotonsshallbeequaltoorgreaterthan2MeV.Forelectronbeams,theinitialelectronenergyshallbegreaterthan4MeV(seeICRUReports34and35).Note1-Thelowerlimitsofelectromagneticradiationenergygivenareappropriateforacylindricaldosimeterampouleof12-mmdiameter.Correctionsfordosegradientsacrossanampouleofthatdiameterorlessarenotrequired.TheECBsystemmaybeusedatenergiesofincidentelectronslowerthan8MeVbyemployingthinner(inthebeamdirection)dosimetercontainers(seeICRUReport35).Theirradiationtemperatureofthedosimetershouldbewithintherangefrom-40?Cto80?C.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G04
【国际标准分类号】:17_240
【页数】:
【正文语种】:英语


【英文标准名称】:StandardPracticeforExaminationofGas-FilledFilament-WoundCompositePressureVesselsUsingAcousticEmission
【原文标准名称】:声发射法检验充气长纤维缠绕复合材料压力容器的标准实施规程
【标准号】:ASTME2191/E2191M-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】:E07.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:acousticemission;compositegascylinders;compositepressurevessel;flaws;gaspressurevessels;NGVtanks;Acousticemission(AE)testing--metals/metallicmaterials;Compositepressurevessels;Filament-woundpressurevessels;Gascylinders;Gas
【摘要】:Duetosafetyconsiderations,theCompressedGasAssociation(CGA)andothershaveproducedguidelineswhichaddressin-serviceinspectionofNGVfuelcontainers(see2.2-2.4).AEexaminationislistedasanalternativetotheminimumthree-yearvisualexaminationwhichgenerallyrequiresthatthecontainerberemovedfromthevehicletoexposetheentirecontainersurface.TheAEmethodallowsx201C;in-situx201D;examinationofthecontainer.Slow-fillpressurizationmustproceedatflowratesthatdonotproducebackgroundnoisefromflowofthepressurizingmedium.Acousticemissiondataarerecordedthroughoutapressurizationrange(thatis,50%to100%ofAEexaminationpressure).Fast-fillpressurizationcanbeusedifholdperiodsareprovided.Acousticemissiondataarerecordedonlyduringtheholdperiods.Note18212;Fast-fillpressurizationislessappropriateforcarbon(orgraphite)compositesduetothelowersensitivityofcarbonfiberstostressrupturecomparedtootherfibers.BackgroundnoiseabovethethresholdwillcontaminatetheAEdataandrenderthemuseless.Usersmustbeawareofthefollowingcommoncausesofbackgroundnoise:highfillrate(measurableflownoise);mechanicalcontactwiththevesselbyobjects;electromagneticinterference(EMI)andradiofrequencyinterference(RFI)fromnearbybroadcastingfacilitiesandfromothersources;leaksatpipeorhoseconnectionsandairborneparticles,insects,rainandsnow.Thispracticeshouldnotbeusedifbackgroundnoisecannotbeeliminatedorcontrolled.5.2Sensitivityisinfluencedbyfactorsthataffectelasticwavepropagation,sensorcouplingandsignalprocessorsettings.5.3ItispossibletomeasureAEfromAEsourcesthatcannotbeverifiedbyotherNDEmethods.1.1Thispracticeprovidesguidelinesforacousticemission(AE)examinationoffilament-woundcompositepressurevessels,forexample,thetypeusedforfueltanksinvehicleswhichusenaturalgasfuel.1.2Thispracticerequirespressurizationtoalevelequaltoorgreaterthanwhatisencounteredinnormaluse.Thetanks''pressurizationhistorymustbeknowninordertousethispractice.Pressurizationmediummaybegasorliquid.1.3Thispracticeislimitedtovesselsdesignedforlessthan690bar[10,000psi]maximumallowableworkingpressureandwatervolumelessthan1m3or1000L[35.4ft3].1.4AEmeasurementsareusedtodetectemissionsources.Othernondestructiveexamination(NDE)methodsmaybeusedtogainadditionalinsightintotheemissionsource.ProceduresforotherNDEmethodsarebeyondthescopeofthispractice.1.5Thispracticeappliestoexaminationofnewandin-servicefilament-woundcompositepressurevessels.1.6Thispracticeappliestoexaminationsconductedatambienttemperaturesabove20x00B0;C[70x00B0;F].Thispracticemaybeusedatambienttemperaturesbelow20x00B0;C[70x00B0;F]ifprovisionhasbeenmadetofilltothetank''sratedpressureat20x00B0;C[70x00B0;F].1.7Units8212;ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.8