Designation:A1047/A1047M−05(Reapproved2014)StandardTestMethodforPneumaticLeakTestingofTubing1ThisstandardisissuedunderthefixeddesignationA1047/A1047M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodprovidesproceduresfortheleaktestingoftubingusingpneumaticpressure.Thistestmethodinvolvesmeasuringthechangeinpressureinsidethetubingovertime.Therearethreeproceduresthatmaybeused,allofwhichareintendedtobeequivalent.Itisaqualitativenotaquantitativetestmethod.Anyofthethreeproceduresareintendedtobecapableofleakdetectionand,assuch,areintendedtobeequivalentforthatpurpose.1.2Theprocedureswillproduceconsistentresultsuponwhichacceptancestandardscanbebased.ThistestmaybeperformedinaccordancewiththePressureDifferential(Pro-cedureA),thePressureDecay(ProcedureB),ortheVacuumDecay(ProcedureC)method.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3.1Withinthetext,theSIunitsareshowninbrackets.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A1016/A1016MSpecificationforGeneralRequirementsforFerriticAlloySteel,AusteniticAlloySteel,andStainlessSteelTubes3.Terminology3.1Definitions—ThedefinitionsinSpecificationA1016/A1016Mareapplicabletothistestmethod.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1actualstartingpressure(P0actual)—theactualstart-ingpressureattimezerooneachtestcycle.3.2.2calibrationhole—adevice(suc...
