运营管理17-维持稳定性

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2020-04-26

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17–1OperationsManagementOperationsManagementChapter17–MaintenanceandReliabilityChapter17–MaintenanceandReliabilityPowerPointpresentationtoaccompanyPowerPointpresentationtoaccompanyHeizer/RenderHeizer/RenderPrinciplesofOperationsManagement,6ePrinciplesofOperationsManagement,6eOperationsManagement,8eOperationsManagement,8e17–2OutlineOutlineGlobalCompanyProfile:OrlandoGlobalCompanyProfile:OrlandoUtilitiesCommissionUtilitiesCommissionTheStrategicImportanceOfTheStrategicImportanceOfMaintenanceAndReliabilityMaintenanceAndReliabilityReliabilityReliabilityImprovingIndividualComponentsImprovingIndividualComponentsProvidingRedundancyProvidingRedundancy17–3OutlineOutline––ContinuedContinuedMaintenanceMaintenanceImplementingPreventiveImplementingPreventiveMaintenanceMaintenanceIncreasingRepairCapabilityIncreasingRepairCapabilityTotalProductiveMaintenanceTotalProductiveMaintenanceTechniquesForEstablishingTechniquesForEstablishingMaintenancePoliciesMaintenancePolicies17–4LearningObjectivesLearningObjectivesWhenyoucompletethischapter,youWhenyoucompletethischapter,youshouldbeableto:shouldbeableto:IdentifyorDefine:IdentifyorDefine:MaintenanceMaintenanceMeantimebetweenfailuresMeantimebetweenfailuresRedundancyRedundancyPreventivemaintenancePreventivemaintenanceBreakdownmaintenanceBreakdownmaintenanceInfantmortalityInfantmortality17–5LearningObjectivesLearningObjectivesWhenyoucompletethischapter,youWhenyoucompletethischapter,youshouldbeableto:shouldbeableto:DescribeorExplain:DescribeorExplain:HowtomeasuresystemreliabilityHowtomeasuresystemreliabilityHowtoimprovemaintenanceHowtoimprovemaintenanceHowtoevaluatemaintenanceHowtoevaluatemaintenanceperformanceperformance17–6OrlandoUtilitiesOrlandoUtilitiesCommissionCommissionMaintenanceofpowergeneratingplantsMaintenanceofpowergeneratingplantsEveryyeareachplantistakenoffEveryyeareachplantistakenoff--linelinefor1for1--3weeksmaintenance3weeksmaintenanceEverythreeyearseachplantistakenEverythreeyearseachplantistakenoffoff--linefor6linefor6--8weeksforcomplete8weeksforcompleteoverhaulandturbineinspectionoverhaulandturbineinspectionEachoverhaulhas1,800tasksandEachoverhaulhas1,800tasksandrequires72,000laborhoursrequires72,000laborhoursOUCperformsover12,000maintenanceOUCperformsover12,000maintenancetaskseachyeartaskseachyear17–7OrlandoUtilitiesOrlandoUtilitiesCommissionCommissionEverydayaplantisdowncostsOUCEverydayaplantisdowncostsOUC$100,000$100,000UnexpectedoutagescostbetweenUnexpectedoutagescostbetween$350,000and$600,000perday$350,000and$600,000perdayPreventivemaintenancediscoveredaPreventivemaintenancediscoveredacrackedrotorbladewhichcouldhavecrackedrotorbladewhichcouldhavedestroyeda$27millionpieceofdestroyeda$27millionpieceofequipmentequipment17–8StrategicImportanceofStrategicImportanceofMaintenanceandReliabilityMaintenanceandReliabilityFailurehasfarreachingeffectsonaFailurehasfarreachingeffectsonafirmfirm’’ssOperationOperationReputationReputationProfitabilityProfitabilityDissatisfiedcustomersDissatisfiedcustomersIdleemployeesIdleemployeesProfitsbecominglossesProfitsbecominglossesReducedvalueofinvestmentinplantandReducedvalueofinvestmentinplantandequipmentequipment17–9MaintenanceandReliabilityMaintenanceandReliabilityTheobjectiveofmaintenanceandTheobjectiveofmaintenanceandreliabilityistomaintainthereliabilityistomaintainthecapabilityofthesystemwhilecapabilityofthesystemwhilecontrollingcostscontrollingcostsMaintenanceisallactivitiesinvolvedMaintenanceisallactivitiesinvolvedinkeepingasysteminkeepingasystem’’sequipmentinsequipmentinworkingorderworkingorderReliabilityistheprobabilitythataReliabilityistheprobabilitythatamachinewillfunctionproperlyforamachinewillfunctionproperlyforaspecifiedtimespecifiedtime17–10ImportantTacticsImportantTacticsReliabilityReliability1.1.ImprovingindividualcomponentsImprovingindividualcomponents2.2.ProvidingredundancyProvidingredundancyMaintenanceMaintenance1.1.ImplementingorimprovingImplementingorimprovingpreventivemaintenancepreventivemaintenance2.2.IncreasingrepaircapabilityorspeedIncreasingrepaircapabilityorspeed17–11StrategyandResultsStrategyandResultsEmployeeInvolvementEmployeeInvolvementInformationsharingSkilltrainingRewardsystemPowersharingMaintenanceandReliabilityMaintenanceandReliabilityProceduresProceduresCleanandlubricateMonitorandadjustMinorrepairComputerizerecordsResultsResultsReducedinventoryImprovedqualityImprovedcapacityReputationforqualityContinuousimprovementReducedvariabilityFigure17.1Figure17.117–12ReliabilityReliabilityImprovingindividualcomponentsImprovingindividualcomponentsRRss=R=R11xRxR22xRxR33xx……xRxRnnwherewhereRR11=reliabilityofcomponent1=reliabilityofcomponent1RR22=reliabilityofcomponent2=reliabilityofcomponent2andsoonandsoon17–13OverallSystemReliabilityOverallSystemReliabilityReliabilityofthesystem(percent)Reliabilityofthesystem(percent)Averagereliabilityofallcomponents(percent)Averagereliabilityofallcomponents(percent)|||||||||10010099999898979796961001