Designation:D7973−14StandardGuideforMonitoringFailureModeProgressioninPlainBearings1ThisstandardisissuedunderthefixeddesignationD7973;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONOilanalysisisapartofcondition-basedmaintenanceprograms.Despitethewideuseforseveraldecades,thereisnosystematicapproachtoselectingoiltestsbasedonfailuremodeanalysis.Mostusersselecttestsprimarilybasedonoildegradationcriteria,minimizingthepotentialfordetectingsurfacedamageandlimitingthepotentialbenefitsoftheoilanalysisprogram.Thisguideprovidesanexampleofjustificationforoilanalysisfromafailurestandpointtoincludebothcomponentwearandfluiddeterioration.1.Scope1.1ThisguidecoversanoiltestselectionprocessforplainbearingapplicationsbyapplyingtheprinciplesofFailureModeandEffectAnalysis(FMEA)asdescribedinGuideD7874.1.2Thisguideapproachesoilanalysisfromafailurestand-pointandincludesboththebearingwearandfluiddeteriora-tion.1.3Thisguidepertainstoimprovingequipmentreliability,reducingmaintenancecosts,andenhancingthecondition-basedmaintenanceprogramprimarilyforindustrialmachinerybyapplyinganalyticalmethodologytoanoilanalysisprogramforthepurposeofdeterminingthedetectioncapabilityofspecificfailuremodes.1.4Thisguidereinforcestherequirementsforappropriateassemblyandoperationwithintheoriginaldesignenvelope,aswellastheneedforcondition-basedandtime-basedmainte-nance.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D130TestMethodforCorrosivenesstoCopperfromPetro-l...
