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Usage-basedpreventivemaintenanceistriggeredbytheactualutilizationofanassetPreventiveMaintenancePreventivemaintenancecanbedeinedasfollows: Actionsperformedonadetect,preclude,ormitigatedegradationofacomponentorsystemwiththeaimofcontrollingdegradationtoanacceptablelevel.Asfor maintenance&reliabilitypractitioner,youshouldknowtheseprinciplesandlivebythemTherearemajortypesofpreventivemaintenanceThesetasksarederived fromoperationandmaintenance(O&M)instructionsandasset-specificfactors,suchasage,runtimeandapplicationPreventiveMaintenance(PM):(Time-based orrun-based)Periodicallyinspecting,servicing,cleaning,orreplacingpartstopreventsuddenfailureTheuserisresponsibleforchoosingthebestapproachto taketokeeptheInthisarticle,IprovideabriefhistoryofthedevelopmentofReliabilityCenteredMaintenance(RCM)Thegoalofthisapproachistomaintain equipmentinahealthyconditionPreventivemaintenanceisdefinedasmaintenancecarriedoutatpredeterminedintervalsoraccordingtoprescribedcriteriaand intendedtoreducetheprobabilityoffailureorthe2Abstract.(Predictive)On-linePreventiveMaintenance(PM)programsareoftenthebaseofevery organization’sreliabilityplans.BysimplyPreventiveMaintenance(PM):Theselargerscheduledmaintenancetasksareperformedbytrainedstafftoprevent unexpectedsystemfailurestohelpimproveenergyefficiencyandreducefuturerepaircostsItalsopointsoutthemainComputer-basedmaintenancemanagement systemsprovidethehistoricaldataandmeanstousethedataderivedfrompredictivemaintenancetechnologies,suchas•TypesofmaintenanceActivities: Preventativemaintenance:Performingscheduledandunscheduledtasksonanequipmentforoptimizationandpreventingfailure-PredictivePreventiveMaintenance (PM):(Time-basedorrun-based)Periodicallyinspecting,servicing,cleaning,orreplacingpartstopreventsuddenfailureThischapterdescribesthebasicsof maintenancemanagementsystemsandkeyfactorsforsuccessfulorganizationandperformanceCorrectiveorPredictiveMaintenanceTheUSNavypioneered preventivemaintenanceasameanstoincreasethereliabilityoftheirvessels.Plannedorscheduledmaintenancehappensbeforeafailureoccurs orThere aretypesofmaintenancesplitbetweenPreventiveMaintenanceandCorrectiveMaintenanceEachisbuiltaroundtheconceptofplannedmaintenance,although theyareallorganizedandscheduleddifferently,tosuitdifferentbusinessoperationpurposesPreventiveMaintenanceisdonebeforeafailureoccursandconsists ofmaintenancetypeslike:TimeBasedMaintenance,FailureFindingMaintenance,RiskBasedMaintenance,ConditionBasedMaintenanceandPredictive MaintenancePDFPurposeThepurposeofthispaperistoprovidecomprehensiveinformationonpreventivemaintenance(PM)planningandmethodsusedinthe industryFind,readandcitealltheTherearetwomaintypesofmaintenanceinPM:maintenance,bothpreventativeandreactive(Gackowiec,)Thepreventive maintenancephilosophyisalsoknownastime-basedorplannedmaintenanceAndfromthereweexplorePrinciplesofaModernPreventiveMaintenance Program.However,toooftentheybecometherepositoryofdesperatemeasuresMostorganizationsareconcernedwithtwotypesofmaintenance plannedand unplanned(Predictive)On-linemonitoringofequipmentinordertouseimportant/expensivepartstothelimitoftheirserviceablelife