astm d3241-18 standard test method for thermal oxidation stability of aviation turbine fuels

1、Designation:D3241?18AnAmericanNationalStardDesignation32316StardTestMethodfThermalOxidationStabilityofAviationTurbineFuels1ThisstardisissuedunderthefixeddesignationD3241thenumberimmediatelyfollowingthedesignationindicate

2、stheyearofiginaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.Thisstardhasbeenapprovedfusebyag

3、enciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoverstheprocedurefratingthetendenciesofgasturbinefuelstodepositdecompositionproductswithinthefuelsystem.1.2ThedifferentialpressurevaluesinmmHgaredefinedonlyinte

4、rmsofthistestmethod.1.3ThedepositionvaluesstatedinSIunitsshallberegardedastherefereevalue.1.4ThepressurevaluesstatedinSIunitsaretoberegardedasstard.Thepsicomparisonisincludedfoperationalsafetywithcertainolderinstrumentst

5、hatcannotreptpressureinSIunits.1.5Nootherunitsofmeasurementareincludedinthisstard.1.6Warning—Mercuryhasbeendesignatedbymanyregulatyagenciesasahazardousmaterialthatcancausecentralnervoussystemkidneyliverdamage.Mercuryitsv

6、apmaybehazardoustohealthcrosivetomaterials.Cautionshouldbetakenwhenhlingmercurymercurycontainingproducts.SeetheapplicableproductMaterialSafetyDataSheet(MSDS)fdetailsEPA’swebsite—:www.epa.govmercuryfaq.htm—fadditionalinfm

7、ation.Usersshouldbeawarethatsellingmercurymercurycontainingproductsintoyourstatecountrymaybeprohibitedbylaw.1.7Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheusero

8、fthisstardtoestablishappropriatesafetyhealthenvironmentalpracticesdeterminetheapplicabilityofregulatylimitationspritouse.Fspecificwarningstatementssee6.1.17.27.2.17.311.1.1AnnexA6.1.8Thisinternationalstardwasdevelopedina

9、ccdancewithinternationallyrecognizedprinciplesonstardizationestablishedintheDecisiononPrinciplesftheDevelopmentofInternationalStardsGuidesRecommendationsissuedbytheWldTradeganizationTechnicalBarrierstoTrade(TBT)Committee

10、.2.ReferencedDocuments2.1ASTMStards:2D1655SpecificationfAviationTurbineFuelsD4306PracticefAviationFuelSampleContainersfTestsAffectedbyTraceContaminationE177PracticefUseoftheTermsPrecisionBiasinASTMTestMethodsE691Practice

11、fConductinganInterlabatyStudytoDeterminethePrecisionofaTestMethod2.2ISOStards:3ISO3274GeometricalProductSpecifications(GPS)—Surfacetexture:Profilemethod—Nominalacteristicsofcontact(stylus)instrumentsISO4288GeometricalPro

12、ductSpecifications(GPS)—Surfacetexture:Profilemethod—Rulesproceduresftheassessmentofsurfacetexture2.3ASTMAdjuncts:4ColStardfTubeDepositRating3.Terminology3.1DefinitionsofTermsSpecifictoThisStard:3.1.1depositsn—oxidativep

13、roductslaiddownonthetestareaoftheheatertubecaughtinthetestfilterboth.3.1.1.1Discussion—Fueldepositswilltendtopredominateatthehottestptionoftheheatertubewhichisbetweenthe30mm50mmposition.1Thistestmethodisunderthejurisdict

14、ionofASTMCommitteeD02onPetroleumProductsLiquidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.J0.03onCombustionThermalProperties.CurrenteditionapprovedFeb.152018.PublishedMarch2018.iginallyapprovedin1973.Lastpr

15、eviouseditionapprovedin2017asD3241–17a.DOI:10.1520D324118.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheAST

16、Mwebsite.3AvailablefromInternationalganizationfStardization(ISO)1ch.delaVoieCreuseCP56CH1211Geneva20Switzerl:www.iso.g.4AvailablefromASTMInternationalHeadquarters.derAdjunctNo.ADJD3241.iginaladjunctproducedin1986.ASummar

17、yofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStatesThisinternationalstardwasdevelopedinaccdancewithinternationallyrecognizedprincipleson

18、stardizationestablishedintheDecisiononPrinciplesftheDevelopmentofInternationalStardsGuidesRecommendationsissuedbytheWldTradeganizationTechnicalBarrierstoTrade(TBT)Committee.17.2Usemethylpentane224trimethylpentanenheptane

19、(technicalgrade95mol%minimumpurity)asgeneralcleaningsolvent.Thissolventwilleffectivelycleaninternalmetalsurfacesofapparatusbefeatestespeciallythosesurfaces(befethetestsection)thatcontactfreshsample.(Warning—Extremelyflam

20、mable.Harmfulifinhaled(seeAnnexA6).)TABLE2CriticalOperatingacteristicsofD3241InstrumentsItemDefinitionTestapparatusTubeinshellheatexchangerasillustratedinFig.1.Testcoupons:HeatertubeABCDSpeciallyfabricatedaluminumtubetha

21、tproducescontrolledheatedtestsurfacenewonefeachtest.Anelectronicrecdingdevicesuchasaradiofrequencyidentificationdevice(RFID)maybeembeddedintotheheatertuberivetlocatedatthebottomoftheheatertube.TubeidentificationEachheate

22、rtubemaybephysicallyidentifiedwithauniqueserialnumberidentifyingthemanufacturerprovidingtraceabilitytotheiginalmaterialbatch.ThisdatamaybestedonanelectronicrecdingdevicesuchasaRFIDembeddedintotheheatertube.Tubemetallurgy

23、6061T6Aluminumplusthefollowingcriteriaa)TheMg:Siratioshallnotexceed1.9:1b)TheMg2Sipercentageshallnotexceed1.85%TubesurfacepolishovercircumferenceofcentersectionRotationalcutbuffingtechniquewithpolishingcompoundtoachievem

24、echanicalsurfacefinish.Tubedimensions:DimensionToleranceTubelengthmm161.9250.254Centersectionlengthmm60.3250.051OutsidediametersmmShoulders4.7240.025Centersection3.1750.051Insidediametermm1.6510.051Totalindicatrunoutmmma

25、x0.013MechanicalsurfacefinishnmovercircumferenceincentersectioninaccdancewithISO3274ISO4288usingthemeanoffour1.25–measurements5020Testfilter5nominal17mstainlesssteelmeshfilterelementtotrapdepositsnewonefeachtestInstrumen

26、tparameters:Samplevolume600mLofsampleisaeratedthenthisaeratedfuelisusedtofillthereservoirleavingspacefthepiston450mL45mLmaybepumpedinavalidtestAerationrate1.5L?mindryairthroughspargerFlowduringtest3.0%10%mLmin(2.7minto3.

27、3max)PumpmechanismpositivedisplacementgearpistonsyringeCoolingbusbarsfluidcooledtomaintainconsistenttubetemperatureprofileThermocouple(TC)TypeJfiberbraidIconelsheathedTypeKIconelsheathedOperatingpressure:System3.45MPa10%

28、onsamplebypressurizedinertgas(nitrogen)byhydraulicallytransmittedfceagainstcontrolvalveoutletrestrictionAttestfilterdifferentialpressure(?P)measuredacrosstestfilter(bymercurymanometerbyelectronictransducer)inmmHgOperatin

29、gtemperature:FtestasstatedinspecificationffuelUnifmityofrunmaximumdeviationof2CfromspecifiedtemperatureCalibrationpuretinat232C(fModels230240onlypureleadat327Cfhighpointicewaterflowpointreference)AD3241IP323ThermalStabil

30、ityisacriticalaviationfueltesttheresultsofwhichareusedtoassessthesuitabilityofjetfuelfaviationoperationalsafetyregulatycompliance.TheintegrityofD3241IP323testingrequiresthatheatertubes(testcoupons)meettheregulationsofD32

31、41Table2giveequivalentD3241resultstotheheatertubessuppliedbytheiginalequipmentmanufacturer(OEM).BThefollowingequipmentheatertubesmanufacturedbyPAC8824FallbrookDriveHoustonTX77064wasusedinthedevelopmentofthistestmethod.Th

32、isisnotanendsementcertificationbyASTMInternational.CAtestprotocoltoestablishequivalenceofheatertubesisonfileatASTMInternationalHeadquartersmaybeobtainedbyrequestingResearchReptRR:D021550.DThefollowingequipmentheatertubef

33、ilterkitsmanufacturedbyFalexCpation1020AirparkDr.SugarGroveIL605549585wasrunthroughthetestprotocolinRR:D021550determinedasequivalenttotheequipmentusedtodevelopthetestmethod.ThistestisdetailedinRR:D021714.Thisisnotanendse