Designation:D6224−22StandardPracticeforIn-ServiceMonitoringofLubricatingOilforAuxiliaryPowerPlantEquipment1ThisstandardisissuedunderthefixeddesignationD6224;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONAmoresystematicapproachtomonitoringauxiliarypowerplantequipmentcanhelptominimizethehighcostofoilchangesandunplannedshutdowns.Theseavoidedcostsmustbebalancedagainstthecostofsamplingandlaboratorytesting.Thispracticeisdesignedtohelptheuserevaluatetheconditionofthelubricantthroughitslifecyclebycarryingoutameaningfulprogramofsamplingandtestingofoilsinuse.Thispracticeisperformedinordertocollectdataandmonitortrendswhichsuggestanysignsoflubricantdeteriorationandtoensureasafe,reliable,andcost-effectiveoperationofthemonitoredplantequipment.1.Scope*1.1Thispracticecoverstherequirementsfortheeffectivemonitoringofmineraloilandphosphateesterfluidlubricatingoilsinserviceauxiliary(non-turbine)equipmentusedforpowergeneration.Auxiliaryequipmentcoveredincludesgears,hydraulicsystems,dieselengines,pumps,compressors,andelectrohydrauliccontrol(EHC)systems.Itincludessamplingandtestingschedulesandrecommendedactionsteps,aswellasinformationonhowoilsdegrade.NOTE1—Othertypesofsyntheticlubricantsaresometimesusedbutarenotaddressedinthispracticebecausetheyrepresentonlyasmallfractionofthefluidsinuse.Usersofthesefluidsshouldconsultthemanufacturertodeterminerecommendedmonitoringpractices.1.2Thispracticedoesnotcoverthemonitoringoflubricat-ingoilforsteamandgasturbines.Rather,itisintendedtocomplementPracticeD4378.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,...
