2. TPM overview
2
T P M
Total Productive
Maintenance
Whatâs TPM
How TPM
works
Concept Zero
TPM Targets
Why TPM
Objectives of
TPM
3. WhatâsT P M
⢠TPM wasdeveloped in the 1970's as amethodof involving
machineoperators in the preventive maintenanceof their
machines
â a reaction to increasing specialization and centralization of the maintenance
function that had createddivision-of-labor barriers between operators and the
maintenance of their machines and equipment.
â Also creating a sense of ownership in workers with Autonomous Maintenance
3
4. Objectives ofT P M
⢠Theoverriding objective of TPMis the elimination ofLOSSES.Losses, or
waste, includes equipment downtime, defects, scrap, accidents, wasted energy,
and labor inefficiency.
⢠TPM was introduced to achieve some of the following important objectives:
â Safer working environment, Job security
â Producing goods with improved quality and machinereliability
â Improved financial performance
â Producea low batch quantity at the earliest possible time.
â Goods send to the customers must benon defective
4
5. Why T P M
5
Before 1 Severe problem occured, there were 300 minor and 29 major problems to
handle.
Source: Kaizen Institute, Frankfurt
Heinrichâs Law
TPM is a tool which addresses potential signs of machine break-downs and is therefore
an important instrument to prevent total machine crashes.
1
29
300
Severe problem
Minor problems
Major problems
6. Concept ZERO
⢠Thegoal ofTPMisto driveall wasteto zero: ZeroAccidents,Zero
Defects,ZeroBreakdowns.
⢠The Concept of Zero is built uponPoka-Yoke, in the design of the process to make
it impossible to makeand pass on defects.
⢠Poka-Yoke concepts are also commonlyapplied to equipment to prevent
breakdowns.
6
7. Performance Measure and 6 Losses
⢠OEE is the performance measureof TPM.
⢠Thus factors affecting OEE/ TPM:
⢠Availability
⢠Performance
⢠Quality
â Associated 6 big losses are:
⢠Availability Losses: Breakdown losses caused bythe equipment; Set-up
and adjustment losses
⢠Performance Losses: Minor stoppage losses; Speed losses
⢠Quality Losses: Quality defect and rework losses; Yield losses
7
10. Types ofMaintenance
⢠BreakdownMaintenance:Thisoccurs when equipment failsbut doesnot affect
production or operationor extracostsother than repairs
⢠PreventiveMaintenance:A dailymaintenancedesignedto maintainequipment
againstfailingand alsoimprovedhealthcondition
â PeriodicMaintenance:Atimebasedmaintenance
â PredictiveMaintenance:Maintenancebased on condition monitoringby
employingsurveillancesystem
⢠CorrectiveMaintenance:Redesigningequipmentwith weaknessto improve
reliability
⢠MaintenancePrevention:Thisindicatesdesignof new machineby Cross
functional teams afterthorough study on weaknessof current machines
10
11. TPM Targets
11
P roduction:
Obtain Minimum80% OPE.
Obtain Minimum90% OEE( Overall Equipment Effectiveness )
Runthe machineseven duringlunch.( Lunchis for operators and not for machines!)
Quality:
Operate in a manner,so that thereareno customer complaints.
C osts:
Reduce themanufacturingcost by 30%.
D elivery:
Achieve100%success indelivering the goods as requiredby the customer.
Safety:
Maintain a accident freeenvironment.
M aintenance:
Develop Multi-skilled and flexible workers. AndCross functional teams