Designation:G92−86(Reapproved2015)StandardPracticeforCharacterizationofAtmosphericTestSites1ThisstandardisissuedunderthefixeddesignationG92;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticegivessuggestedproceduresforthechar-acterizationofatmospherictestsites.Continuouscharacteriza-tioncanprovidecorrosiondata,environmentaldata,orbothwhichwillsignalchangesincorrosivityoftheatmosphericenvironment.Thispracticecanalsoprovideguidanceforclassificationoffuturetestsites.1.2Twomethodsaredefinedinthispracticeforthechar-acterizationofatmospherictestsites.Themethodsareidenti-fiedascharacterizationMethodsAandB.ThepreferredcharacterizationtechniquewouldrequireusingbothMethodAandBforconcurrentdatacollection.1.2.1MethodAistobeusedwhenatmosphericcorrosionismonitoredonacontinuingbasisatatestsiteusingspecifiedmaterialsandexposureconfigurations.1.2.2MethodBisspecifiedwhenatmosphericfactorsaremonitoredonacontinuingbasis.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2A36/A36MSpecificationforCarbonStructuralSteelB6SpecificationforZincG1PracticeforPreparing,Cleaning,andEvaluatingCorro-sionTestSpecimensG50PracticeforConductingAtmosphericCorrosionTestsonMetalsG84PracticeforMeasurementofTime-of-WetnessonSur-facesExposedtoWettingConditionsasinAtmosphericCorrosionTestingG91PracticeforMonitoringAtmosphericSO2DepositionRateforAtmosphericCorrosivityEvaluation3.SummaryofMethods3.1CharacterizationMethodAistobeusedwhenatmo-sphericcorrosiond...
