module: tpm. target audience : engineering, maintenance, facilities, procurement, operations....
TRANSCRIPT
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Module: TPM
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Target Audience :
Engineering, Maintenance, Facilities, Procurement, Operations.
Purpose of Module :
To understand & implement the techniques of effective maintenance to minimise Life Cycle Cost.
Aims & Objectives :• Relate to TPM/OEE/Autonomous Maintenance• Planned Maintenance • Preventative Maintenance• Predictive Maintenance• Design of effective maintenance strategy• Understand how to work with historical analysis
Aims and Objectives
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• Introduction
• TPM Overview
• Effective Maintenance Overview
• Planned Maintenance
• Preventative Maintenance
• Predictive Maintenance
• Breakdown Maintenance
• Effective Equipment Design
Contents
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Total Productive Maintenance
OVERVIEW
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Imp
rove
men
t A
ctiv
itie
s
Pla
nn
ed M
ain
ten
ance
Au
ton
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ain
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ance
Ed
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Tra
inin
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Mai
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on
Continuous Improvement
Systematic Elimination of Waste
What is Total Productive Maintenance (TPM)?
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??????What is Total Productive Maintenance (TPM)?
• A system of maintenance covering the entire life of the equipment and the total human resource.
• TPM is a tried and tested way of eliminating waste, saving money and making factories better places to work.
• It gives operators the knowledge and confidence to manage their own machines.
• TPM is a long term process to increase skills, raise efficiency and achieve zero losses.
Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
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??????What are the benefits of TPM?
Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
• TPM refuses to accept that machine inevitably fail.
• TPM reduces the total life-cycle costs of equipment.
• TPM simply reminds us that every time a machine fails, something could have been done to prevent it.
• Gradually the operator’s become maintainers.
• Gradually the maintainers become improvers.
• TPM develops the five senses, as well as technical skills.
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Available time
Available operating time
Actual operatingtime
Effective operating time
Breakdowns1
Setup / adjustment2
Idling / minor stoppages3
Speed4
Defects in process and rework5
Start up losses6
Equipment Six Big Losses
Loss Elimination through TPM?
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??????What is Effective Maintenance?
Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
• PLANNED MAINTENANCE
“ The scheduling of maintenance activities on a time based or usage basis regardless of the current performance levels of the equipment”
• PREVENTATIVE MAINTENANCE
“ A systematic approach to eliminate catastrophic failure/breakdowns through regular care and attention, early diagnosis and rectification”
• PREDICTIVE MAINTENANCE
“ A systematic approach utilising history and equipment condition monitoring to predict and preventprevent catastrophic failure/breakdowns ”
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??????Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
• BREAKDOWN MAINTENANCE
“ When all else fails ensuring that equipment availability is achieved in the shortest possible time whilst eliminating root cause faults with sustainable repairs”
• EFFECTIVE EQUIPMENT DESIGN
“ A systematic approach to equipment design which maximises equipment availability, minimises life cycle costs and eliminates waste”
What is Effective Maintenance?
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??????What is Autonomous Maintenance?
• An operator skills development programme.
• Allows problems to be identified and solved quickly.
• Stops accelerated deterioration of plant and equipment.
• An approach to stop deterioration related failures.
• Stabilises equipment conditions (standards).
• Develop training materials on how to run, operate & maintain equipment.
Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
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???What is Overall Equipment Effectiveness (OEE)?
• Overall Equipment Effectiveness (OEE) is a total measure of performance that relates the availability of the process to the productivity and quality.
• OEE is the Key Performance Indicator (KPI) for TPM.
• OEE will measure the impact of change on a process caused by eliminating process, or equipment losses.
• A World Class Company should achieve 85% OEE on key equipment (typical operation between 40 to 60%).
Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
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??????What is Quick Changeover?
• Quick Changeover is a method of analysing and reducing the time needed to change a process from producing one good part to producing the next good part part.
• It is a driver for standardisation.
• It is one of the 6 Big Losses.
• Quick changeovers are an enabler for flow.
• Often referred to as “Single Minute Exchange of Die” (SMED).
Maintenance of normal conditions / Early discovery of abnormalities / Prompt response Maintenance of normal conditions / Early discovery of abnormalities / Prompt response
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What will TPM do for our business?
IMPROVE PLANT AND EQUIPMENT
IMPROVE CORPORATE CULTURE
IMPROVE HUMAN RESOURCES
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Effective Maintenance
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATION
TRAINING
AUTONOMOUS MAINTENANCE MAINTENANCE
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Effective Maintenance
Is :-
“ Zero Breakdowns”
Is not :-
“ Repairing equipment as quickly and efficiently as possible when it breakdowns“
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Effective Maintenance
• Introducing an Effective Maintenance system is not a “quick fix”.
• Effective Maintenance should involve all areas of the organisation.
• Information is key.
• Operator and Maintainer training
– Up-skill Maintenance to be trainers and equipment improvers
– Up-skill Operators to be equipment maintainers
P
D
A
C
Plan
DoCheck
Act
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Autonomous Maintenance
• Definition:- conditions and halting further deterioration”
“The partnership of Production and Maintenance departments to accomplish a common goal,
stabilising equipment conditions and halting further deterioration”
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Autonomous Maintenance
• Operator skills development programme.
• Allow problems to be identified and solved quickly.
• Stop accelerated deterioration of plant and equipment.
• An approach to stop deterioration related failures.
• Stabilise equipment conditions (standards).
• Develop training materials on how to run, operate & maintain equipment.
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Planned Maintenance
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATIONINFORMATION
TRAININGTRAINING
AUTONOMOUS MAINTENANCEAUTONOMOUS MAINTENANCE
Planned Maintenance
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Planned Maintenance
• Definition:-
“The scheduling of maintenance activities on a time based or usage basis regardless of the
current performance levels of the equipment”
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Planned Maintenance
• Planned Maintenance as part of an Effective Maintenance system takes time and to be effective has to be “a way of life”.
• Planned Maintenance can make or break the relationship between production and maintenance functions.
• Partnership is the key.
• The schedule and time required should be both sympathetic to production needs and be effective.
• Key elements should be Lubrication Control and Spare Parts Management.
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Planned Maintenance
No.
of
Bre
akdo
wns
Time
Planned Checking &
Replacement
Autonomous Maintenance
Factory Wide PM System
Predictive Maintenance
Zero Breakdown
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Planned Maintenance
• Evaluation of equipment and knowledge of existing conditions.
• Restore equipment condition and improve weaknesses.
• Creating an information management system.
• Creating and maintaining a Planned Maintenance system.
STEPS TO INTRODUCTION
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Planned Maintenance
• Identify critical machines - Bottlenecks.
• Existing machine maintenance records?
• Combine with Autonomous Maintenance activities.
• Criticality Assessment.
• Existing Overall Equipment Effectiveness (OEE) data.
• Initial equipment survey.
EVALUATION OF EQUIPMENT & KNOWLEDGE OF EXISTING CONDITIONS
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Avai
labi
lity
Perfo
rman
ceQ
ualit
yR
elia
bilit
yM
aint
aina
bilit
ySa
fety
Ran
k
Envi
ronm
ent
Cos
t
Tota
l
EQUIPMENT DESCRIPTION
No
Type:Machine:Date:
CRITICALITY ASSESSMENT
Planned Maintenance
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• AVAILABILITY
– If this failed what would be the impact on running, set-up or adjustment.
• PERFORMANCE
– Impact on the cycle time or processing capacity.
• QUALITY
– Impact on start up or process.
• RELIABILITY
– Impact of this components failure rate.
• MAINTAINABILITY
– Ease of maintenance.
• SAFETY
– Impact if this failed or was in poor condition.
• ENVIRONMENT
– Impact on the environment.
• COST
– Impact if failed / cost to the business.
CRITICALITY ASSESSMENT
Planned Maintenance
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AREA CHECK FORDamage, dirt, dust, excess oil, splatter and foreign matter. Unnecessary objects on machine. Broken parts, loose or missing nuts, bolts etc. Wear and play of machine.
Damage, dirt, dust, excess oil, splatter and foreign matter.Broken parts, loose or missing nuts, bolts etc.Leaks of oil, air, gas, steam. Indicator lamps not working.
Dirt, dust, sludge. Proper lubrication levels.Lubricating devices capped?All lubrication pipes clean with no leaks.Are lubrication levels clearly visible?
Name plates and labels are clean and visible.Safety shields are free from dirt, dust & fog.Are pipe routings organised around machine? Check floor condition for rubbish & parts.Are good parts, rejects, scrap material clearly segregated.
Check safety devices for damage, malfunctioning or missing parts. Are there any obvious safety hazards or violations.
1. Main body of equipment
2. Ancillary Equipment
3. Lubrication
4. Housekeeping around machine
5. Safety
INITIAL EQUIPMENT SURVEY
Planned Maintenance
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CLEAN, CHECK & TAG
• Operator involvement with maintenance.
• Operators to “Tag” all elements of the equipment that they believe require improvement.
• Description of fault and effect on each tag (can be used in conjunction with a machine map).
• Maintenance to list and answer all tags, i.e. counter-measure and time-scales or reasons for not undertaking.
INITIAL EQUIPMENT SURVEY
Planned Maintenance
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MACHINE MAPPING
• Group exercise.
• Lead by an experienced
engineer/maintainer.
• Use in conjunction with “Tags”.
Tag 1
Tag 2
Tag 3
Tag 4
Tag 5
Tag 6
Tag 7
Tag 8
Tag 9
INITIAL EQUIPMENT SURVEY
Planned Maintenance
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Planned MaintenanceINITIAL EQUIPMENT SURVEY
Clean, Check & Tag Issues RegisterCodeClass
W P Last Updated:WATER PNEUMATIC
1 2 3 4BROKEN MISSING DIRTY WORN
Code
Class
Check / Tag No.
6POOR DESIGN
5LEAKING
EELECTRICAL
MMECHANICAL
L
Customer Protection
LUBRICATIONH
HYDRAULIC
7DIFFICULT TO CLEAN
Countermeasure Cause Status Location Owner
COUNTERMEASURE PROPOSED COUNTERMEASURE AGREED PROBLEM SOLVED
REOCCURRENCE PREVENTED
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E M L H W P TOTAL
1
2
3
4
5
6
7
8
9
TOTAL
CODE CLASS
E = ELECTRICALM = MECHANICALL = LUBRICATIONH = HYDRAULICW = WATERP = PNEUMATIC
1 = BROKEN2 = MISSING3 = DIRTY4 = WORN5 = LEAKING6 = POOR DESIGN7 = DIFFICULT TO CLEAN
CONCERN / FAULT ANALYSIS
INITIAL EQUIPMENT SURVEY
Planned Maintenance
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Planned Maintenance
Available time
Available operating time
Actual operatingtime
Effective operating time
Breakdowns1
Setup / adjustment2
Idling / minor stoppages3
Speed4
Defects in process and rework5
Start up losses6
Equipment Six Big Losses
OEE AND THE 6 BIG LOSSES
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Planned Maintenance
• Through the evaluation of the equipment, initial survey and tagging exercise, return equipment to an improved standard.
• Define the standard and maintain it.
• Without undertaking initial improvement planned, preventative and autonomous maintenance activities will be less effective.
– Changes to machine conditions will not be clear
– Operators time will be wasted
– Planned Maintenance will take longer
RESTORE EQUIPMENT CONDTION AND IMPROVE WEAKNESSES
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• Set and maintain standards
Now you can see any problems
easily!
Now you can see any problems
easily!
Look at my shiny
machine
Look at my shiny
machine
Planned Maintenance
RESTORE EQUIPMENT CONDTION AND IMPROVE WEAKNESSES
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Planned Maintenance
• Without information an effective maintenance system cannot function.
• Data is gathered to measure and improve performance.
• OEE is the key performance indicator for Effective Maintenance.
• Information should be gathered from :-
– OEE data collection (Operators)
– Autonomous Maintenance activities (Operators)
– Planned Maintenance Activities (Maintenance)
– Predictive Maintenance (Maintenance)
– Preventative Maintenance (Maintenance)
– Breakdowns (Maintenance)
CREATING AN INFORMATION MANAGEMENT SYSTEM
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Planned Maintenance
CREATING (Plan/Do)
• Planned Maintenance should be mostly inspection - identify parts for immediate or future replacement, etc.
• Ensure timings for tasks to the schedule are realistic (buying off with production).
• Single Point Lessons (SPL) and training to support them.
• Ensure the schedule is visible to both Production and Maintenance.
CREATING AND MAINTAINING A PERIODIC MAINTENANCE SYSTEM
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Planned Maintenance Activities
Date: Items to be CheckedNo.
1234567891011
14
1213
15
Period
3 mth Hydraulic Pressure
M/c : Activity SPL
161718
Setting
8-10 PSI6 mth Replace - Work head Drive Belt 123-4
Planned Maintenance
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Planned Maintenance
MAINTAINING (Check/Act)
• Check breakdown frequency between Planned Maintenance and adjust schedule and/or content accordingly.
• Check the results of Planned Maintenance and if items are continuously OK or always need replacing, adjust frequency.
• Always look to reduce time for a Planned Maintenance activity, identify items that can be checked in-process.
• Check information gained from OEE data collection.
CREATING AND MAINTAINING A PERIODIC MAINTENANCE SYSTEM
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Planned Maintenance
Choose Model M/C in each Area
Monitor & Display Results
Implement on Model M/c
Horizontal Development
Continue To Check and Act
Develop Full PM
Frequency
Assign Duties
Data Collection
Predictive
CorrectiveLubrication Schedule
Spare Parts
Restore / Improve
Weaknesses
INTRODUCING
Gather Accurate Data
BreakdownsTime
Between Failures
Process Capability
Yield Downtime
Capacities
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Planned Maintenance
• A frequently overlooked element which is a contributing factor in 70% of all hydraulic system failures.
• Should include activities across all disciplines.
• Minimising cost through rationalisation.
• Lubrication beyond scope of operators (as part of Autonomous Maintenance), i.e. expensive hydraulic oil.
• Does it need replacing? Analyse the condition, what does it tell you about the m/c? What is in it?
• Consider filters. Frequency of change? Level of filtration?
LUBRICATION CONTROL
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4 POINTS FOR LUBRICATION CHECKS
Change Oil after 2.0 point degradation......
Original Standard Change at this level
Do not mix oils
Check quantity of Oil Check quality of Oil
Avoid contamination
3.53.02.52.01.51.00.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0
LUBRICATION CONTROL - Example
Planned Maintenance
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Planned Maintenance
BENEFITS
• Reduced friction > reduced wear > extends equipment life.
• Reduces accidents.
• Maintains accuracy.
• Maintains optimum process conditions.
• Reduces waste.
LUBRICATION CONTROL
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Planned Maintenance
• Balance stock costs v disruption v achievable delivery.
• Consumable (wear parts) and Non-consumable.
• Modular Parts - easy to replace elements.
• Clearly identified condition of spares, i.e. anything taken off machines should be tagged (visual - red / amber / green)
SPARE PARTS MANAGEMENT
Scrap - Strip for spares, etc. Repair Required Ready to fit
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Preventative Maintenance
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATION
TRAINING
AUTONOMOUS MAINTENANCE
Preventative Maintenance
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Preventative Maintenance
• Definition:-
“A systematic approach to eliminate catastrophic failure/breakdowns through regular care and attention, early diagnosis and rectification”
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Preventative Medicine
Regular Check Ups
Daily Maintenance (Clean/Lubricate)
Inspection Diagnosis Preventive Repairs
Preventative Maintenance
Daily Health Care Early Treatment
ANALOGY
Preventative Maintenance
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• Maintain Operating Conditions.
• Prevent Accelerated Deterioration.
Preventative Maintenance
• Establish where abnormalities will occur without disassembling the equipment.
• Permits quality checks of repairs already made to overhauled equipment.
• Permit estimation of repair periods.
• Reduce maintenance costs by eliminating periodic overhauls.
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Preventative Maintenance
• Deterioration accelerated by neglect.
• Interface with Autonomous Maintenance.
• Daily / weekly check lists.
• Single Point Lessons (SPL).
PREVENT ACCELERATED DETERIORATION
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Preventative Maintenance
Date: Machine:Process:
Preventative Maintenance Check Sheet.Check no.
1
Activity : Freq.
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• Equipment “straining” to operate beyond its normal range because correct conditions not maintained.
• Ensure out of specification conditions are clearly visual or audible, i.e. red zones, level markers, buzzers, etc.
Preventative Maintenance
MAINTAIN OPERATING CONDITIONS
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Predictive Maintenance
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATION
TRAINING
AUTONOMOUS MAINTENANCE
Predictive Maintenance
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Predictive Maintenance
• Definition:-
“A systematic approach utilising history and equipment condition monitoring to predict catastrophic failure/breakdowns ”
“A systematic approach utilising history and equipment condition monitoring to predict and and
preventprevent catastrophic failure/breakdowns”
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Predictive Maintenance
• Sophisticated.
• Requires Planned and Preventative Maintenance systems in place.
• Identify point at which critical part fails.
• Common method is simply time or frequency based, i.e. no. of rev’s, no. of hours in service, etc.
• More sophisticated methods are condition based, i.e. temp. of oil, condition of oil, speed of operation.
• Links with Autonomous Maintenance, i.e. basic predictions based on visual and audible indications.
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Predictive Maintenance
WHY?
• Predictive Maintenance should not be just a passive activity.
• Root cause problem solving - reduction or elimination.
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Breakdown Maintenance
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATION
TRAINING
AUTONOMOUS MAINTENANCE
Breakdown Maintenance
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Breakdown Maintenance
• Definition:-
“When all else fails ensuring that equipment availability is achieved in the shortest possible time whilst
eliminating root cause faults with sustainable repairs”
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• Record repair work in sufficient detail.
• Problem solving techniques.
Breakdown Maintenance
• Take repair work beyond quick-fix measures.
• Always seek the root cause.
• Historical data.
• Single Point Lessons (SPL).
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Breakdown Maintenance
SINGLE POINT LESSON (SPL) - Example
crews CRAFT T/L T/M T/M
1
2
3
4
LINEAREA/MACHINE
No
THEME
PREPARED BY DATE
BASICKNOWLEDGE
IMPROVEMENTCASES
TROUBLECASES
ONE POINT LESSON
Gauge needs to read between red markers within green zone.
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Breakdown Maintenance
RECORD REPAIR WORK IN SUFFICIENT DETAIL
• Lost Time (pareto, OEE)
– Response time, On/Off
– Type of repair (mechanical / electrical)
• Spares Used (spare management)
– Description, part numbers, reason for failure
• Cause/Effect
– What the maintainer believes
• Conditions
– Conditions on equipment when it failed
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Breakdown Maintenance
Big problems deserve attention
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Breakdown Maintenance
PROBLEM SOLVING TECHNIQUES
• 5 Why’s.
• Pareto.
• Cause & Effect.
• Brainstorming - at the machine.
• Include operators - man/machine interface is critical.
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Effective Equipment Design
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATION
TRAININGTRAINING
AUTONOMOUS MAINTENANCE
Effective Equipment Design
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Effective Equipment Design
• Definition:-
“A systematic approach to equipment design which maximises equipment availability, minimises life
cycle costs and eliminates waste”
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• Focus on reliability and maintainability.
Effective Equipment Design
• Establish design goals for new equipment.
• Incorporate TPM improvement activities.
• Involve the customer and suppliers.
• Use information derived from OEE data collection and maintenance activities.
• Understand waste.
– Life cycle costs
– Concept
– Design and development
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Effective Equipment Design
Equipment Build - 35%
Design & Develop - 12%
Operational & Support - 50%
Concept - 3%
LIFE CYCLE COSTS
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Effective Equipment Design
• Product.
• Customers and Suppliers.
• Define reliability and maintainability expectations.
• Production goals -
– Hours of work & demand (TAKT)
– Performance - Output - Life
• Waste elimination.
• Flexibility.
• Implementation plan.
CONCEPT
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Effective Equipment Design
• Man and machine - ergonomics, ease of access, health & safety.
• Formalise concepts.
• Incorporate standards
– Components
– User interfaces
– Standard maintenance equipment
– User/maintainer manuals
• Spares
– Component reliability/predictability (supplier data)
– Spares lists / stocking requirements
DESIGN & DEVELOPMENT
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Effective Equipment Design
• Audit against reliability and maintainability.
– Autonomous Maintenance.
– Effective Maintenance.
• Failure Mode and Effects Analysis (FMEA).
DESIGN & DEVELOPMENT
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Effective Maintenance
Preventative Maintenance
Predictive Maintenance
Planned Maintenance
Breakdown Maintenance
Effective Equipment Design
INFORMATION
TRAINING
AUTONOMOUS MAINTENANCE