Designation:F309−18StandardPracticeforLiquidSamplingofNoncryogenicAerospacePropellants1ThisstandardisissuedunderthefixeddesignationF309;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversproceduresforobtainingasampleofnoncryogenicaerospacepropellant.Twoproceduresarecoveredasfollows:Procedure1—ClosedSystem(Section6),andProcedure2—Open-EndProcedure(Section7).1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.ForhazardstatementsseeSections4and5.1.3Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2F311PracticeforProcessingAerospaceLiquidSamplesforParticulateContaminationAnalysisUsingMembraneFil-ters3.SummaryofPractice3.1Samplesarewithdrawnfromthesystemby(1)aclosedvesselcapture,and(2)anopen-endvessel(seeFig.1).Bothproceduresarepracticalformostliquidaerospacepropellantsnotexcessivelycorrosiveortoxic.4.Apparatus4.1StainlessSteelPressureSamplingCylinders,1-Lcapacity,equippedwithstainlesssteelvalvesoneachend.4.1.1Caution—Pressuresamplingcylindersmustbemarkedfortheliquidbeingsampled.Cylindersforonematerialmustnotbeinterchangedwithsamplingcylindersofothermaterialsbecauseofthepossibilityofincompatibility.4.2FullProtectiveSuits.4.2.1Caution—Duetothetoxicandcorrosivenatureofmostpropellantfluidsandtheirvapors,extremecaremustbeexercisedinhandling.Fullprotectivesuitsmustbewornw...
