Designation:G199−09(Reapproved2014)StandardGuideforElectrochemicalNoiseMeasurement1ThisstandardisissuedunderthefixeddesignationG199;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstheprocedureforconductingonlinecorrosionmonitoringofmetalsbytheuseoftheelectrochemi-calnoisetechnique.Withinthelimitationsdescribed,thistechniquecanbeusedtodetectlocalizedcorrosionactivityandtoestimatecorrosionrateonacontinuousbasiswithoutremovalofthemonitoringprobesfromtheplantorexperimen-talcell.1.2Thisguidepresentsbrieflysomegenerallyacceptedmethodsofanalysesthatareusefulintheinterpretationofcorrosiontestresults.1.3Thisguidedoesnotcoverdetailedcalculationsandmethods;ratheritcoversarangeofapproachesthathavefoundapplicationincorrosiontesting.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2G1PracticeforPreparing,Cleaning,andEvaluatingCorro-sionTestSpecimensG3PracticeforConventionsApplicabletoElectrochemicalMeasurementsinCorrosionTestingG4GuideforConductingCorrosionTestsinFieldApplica-tionsG5ReferenceTestMethodforMakingPotentiodynamicAnodicPolarizationMeasurementsG15TerminologyRelatingtoCorrosionandCorrosionTest-ing(Withdrawn2010)3G16GuideforApplyingStatisticstoAnalysisofCorrosionDataG31GuideforLaboratoryImmersionCorrosionTestingofMetalsG46GuideforExaminationandEvaluationofPittingCor-rosionG59TestMethodforConductingPotentiodynamicPolariza-tionResistanceMeasurementsG61TestMethodforConductingCyclicPotentiodynamicPolarizationMeas...
