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Automated Machinery Automated Machinery MaintenanceMaintenanceBill Powell
Tony Burnett
AgendaAgendaAgendaAgenda Industry Trends & Challenges Machinery Health Strategy Automating Decision Support Key Points
The ‘Game’ of Plant Reliability - PlanningThe ‘Game’ of Plant Reliability - PlanningThe ‘Game’ of Plant Reliability - PlanningThe ‘Game’ of Plant Reliability - Planning
Planned Outage
ID Fault
Question: Can we make it to the next outage?Challenge: Track fault… ‘get us to Nov 20get us to Nov 20’Action: Alert Maintenance Planner
March 1
Nov 20
Nov 29
OUTAGE PLAN1. Change Bearing $$$2. Align Motor $$$3. Install New Coupling $$$… … … … … … … … …
Outa
geFailure
Planned Outage
Business MetricsBusiness MetricsBusiness MetricsBusiness Metrics
Areas that are impacted most by Predictive Decision Support
Key Trends in IndustryKey Trends in IndustryKey Trends in IndustryKey Trends in Industry Meet plant OUTPUT requirements
– Eliminate unplanned failures
Control COSTS– ‘Smart’ skill set utilization – O&M COST
• Annual Maintenance Cost
– Optimize work planning – O&M COST• Analyze MTBF / MTBM
• % Unplanned Maintenance
• Work Order Compliance
– Control outage times• Utilize CMMS / Maint. Planning
Program PerformanceProgram PerformanceProgram PerformanceProgram Performance
1988 2001 Ideal
Reactive 55% 55% 10%
Preventive 30% 31% 25-35%
Predictive 10% 12% 45-55%
Proactive 5% 2% BalanceReliability Magazine’s 2002 report
Over 11 years, plants are still REACTIVE.
World Class organizations focus on PREDICTIVE
Cost Statistics of the HPI SegmentsCost Statistics of the HPI SegmentsCost Statistics of the HPI SegmentsCost Statistics of the HPI Segments Skill Sets
– 75% or operations retiring in the next 15 years
• ‘Gray matter is leaving the plant!’
Costs– 20-30% of costs are related to maintenance
Mechanical Reliability– 3-7% Capacity Impact in loss/slowdown in production of keykey
process equipmentprocess equipment due to unplanned down
• Largest is due to mechanical equipment (40%)
– Predictive Maintenance program shown to impact reductions to unplanned mechanical shutdowns by ~30%
* HPI = Hydrocarbon Process Industries* HPI = Hydrocarbon Process Industries
Operational Challenges of TodayOperational Challenges of TodayOperational Challenges of TodayOperational Challenges of Today ‘Our target is ZERO unplanned downtime!’
– Maximize Equipment Availability & Reliability• Plan all maintenance - HOW?
‘We are trying to be competitive today with a plant that is typically more than 40 years old - and so are our competitors.’– Extend Machinery Life & Rebuilds
‘We are running our equipment beyond its design capacity to handle the variety of materials that we must process’– Running equipment beyond rated capacity
• Increased Throughput, but without RISK?
Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions... What maintenance does the machine need during the next planned
shutdown?– Are the spare parts in my inventory?
– Is my spares inventory too large? Can the equipment run beyond the next scheduled outage? Do I know when cavitation is occurring?
– Fact: 40-60% of machine problems related to lack of feedback to operators*
• Automation systems provide feedback (i.e., CavitationCavitation) back to Operator
* Ron Moore book
Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions... Do you know the # of failures ranked by equipment typeequipment type?
– Rotating Equipment can be segmented into…• Pumps / Fans / Compressors
• Pumps can be segmented into…– Centrifugal / Recip / Rotary / special effect
What are your most problematic machines?– Are they the bottlenecks in your production facility?
• These machines = downtime cost for entire plant.– AutomatedAutomated monitoring strategy would be ideal for these cases
Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions... What are your Key Performance Indicators (KPI)?
– # failures, MTBF/MTBM
– Cost of Repairs, Avg. Repair Cost,
– Maintenance costs by Equipment Group
– Quantified Lost Production Opportunity (LPO)
– Ex.: ExxonMobil reduced maintenance costs 20% corporate-wide by considering these categorical cost concepts
Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions...Answer These Tough Questions... Have you identified your most critical equipment?
– One facility has identified that…• ~ 6 machines can bring them to 0 output MOST MOST
CRITICALCRITICAL
• ~ 30 machines can reduce output to 40-60% ESSENTIALESSENTIAL
• Point: Some output is better than no output!– If production is $1M / day, then 50% output loss = $500K / day
» Likely comes from O&M Budget
– Ex.: TN Eastman has 27,000 pieces of equipment• 3% (or ~750) need online-predictive & protection (AMI 1)
• 26% (~7000) need online and walk-around (AMI 2 or 3)
• What percentage would your operations group tell you?
* AMI = Asset Management Index (1-5, 1 is most critical)* AMI = Asset Management Index (1-5, 1 is most critical)
Conclusions…Conclusions…Conclusions…Conclusions… The market is forcing major industrial facilities to adopt
new methods for the sake of profitability– Equipment is getting old…Running beyond design speeds…
Planning is everything– But we don’t have unlimited man-power – industry is challenged!
Trained skill sets are starting to retiring– How do you capture this knowledge?
Do I have MTBF statistics?– CMMS is becoming important tool for O&M strategies
Identify the machines that reduce greatest percentage of output reduction– These are most critical! Automation is easily justifiable.
AgendaAgendaAgendaAgenda Industry Trends & Challenges Machinery Health Strategy Automating Decision Support Key Points
Machinery Health StrategyMachinery Health StrategyMachinery Health StrategyMachinery Health Strategy
BusinessObjective
Identification
PlantAssessment
andBenchmarking
FailureDefensePlanning
PerformanceQuantification
DESIGN
TechnologyDeployment
ExpertiseOptimization
WorkProcess
Optimization
IMPLEMENTATION
PerformanceMeasurementand Analysis
ImprovementPlanning
REVIEW
ContinuousImprovement
Asset OptimizationAsset OptimizationAsset OptimizationAsset Optimization Technology
– To provide decision support
Expertise– Qualified personnel with
current knowledge
Work Processes – To focus resources on
priorities
AgendaAgendaAgendaAgenda Industry Trends & Challenges Machinery Health Strategy Automating Decision Support Key Points
Detect Detailed Machinery Detect Detailed Machinery ProblemsProblems– Unbalance, Misalignment, Unbalance, Misalignment,
Looseness, Shaft Cracks, Oil Whirl, Looseness, Shaft Cracks, Oil Whirl, Phase, Rubs, Gear and Bearing Phase, Rubs, Gear and Bearing ProblemsProblems
Automated Monitoring ConceptsAutomated Monitoring ConceptsAutomated Monitoring ConceptsAutomated Monitoring Concepts
LoosenessProblem!
Signal Processing Flow
FFT
Waveform
Spectrum
Transducer
Am
plit
ud
eA
mp
litu
de
Time
FrequencyData Collector/Analyzer
Rotation
Heavy Spot
1 revolution
Time
Amplitude
0
+
-
Time Waveform
3600 rpm = 3600 cycles per minute
60 Hz = 60 cycles per second
1 order = one times turning speed
360 degrees
1000 rpm 1 revolution
Time
Amplitude
0
+
-
Time Waveform
4 blades = vibration occurs 4 times per revolution
4 x 1000 rpm = vibration occurs at 4000 cycles per minute
= 4000 cpm
12 toothgear
1000 rpm1 revolution
Time
Amplitude
0
+
-
Time Waveform
12 teeth are meshing every revolution of the gear
12 x 1000 rpm = vibration occurs at 12,000 cycles per minute
= 2,000 cpm = 200 Hz
Time0
+
-
Time0
+
Time0+
-
-
Time0
-
+
Time Waveform contains all the different frequencies mixed together
Complex Time Waveform
Time Waveform contains all the different frequencies mixed together
Complex Time Waveform
We are now entering the Frequency Domain
•FFT - Fast Fourier Transform•Separates individual frequencies•Detects how much vibration at each frequency
TIME WAVEFORM
AMPLITUDE VS TIME
Am
plitu
de
Frequency
Am
plit
ude
Time
Am
plitu
de
Time
Amplitude
Time
Frequency
Time0
-
Time0
+
Time0+
-
-
Frequency
Frequency
Frequency
1x
4x
12x
Predefined Spectrum Analysis BandsPredefined Spectrum Analysis Bands
20000
0.3
0.6
0.9
1.2
1.5
1.81xRPM - BALANCE
2xRPM - ALIGNMENT
3-5xRPM - LOOSENESS
5000 10000 15000
Frequency Hz
5-25xRPM 25-65xRPM
ANTI-FRICTION BEARINGS & GEARMESH
Bearing Fault Frequencies Function of the Geometry of the Bearing
Outer Race(BPFO)
Inner Race(BPFI)
Ball Spin(BSF)
Cage (FTF)
ROLLER BEARING EXAMPLE
Frequency Band Alarming and TrendingFrequency Band Alarming and Trending
Alarm
Trend ofBalance
Trend of Bearings
Alarm
Am
pli
tud
e
Sub-Harmonic 1X 2X Bearing Bearing Gears Bearing
1x 2x 25-60 x
.5in/sec
.1in/sec
Time(Days)
Time(Days)
WarningWarning
Detect Detailed Machinery Detect Detailed Machinery ProblemsProblems– Unbalance, Misalignment, Unbalance, Misalignment,
Looseness, Shaft Cracks, Oil Whirl, Looseness, Shaft Cracks, Oil Whirl, Phase, Rubs, Gear and Bearing Phase, Rubs, Gear and Bearing ProblemsProblems
Pass Information to DCS Plant Pass Information to DCS Plant Information Systems via OPCInformation Systems via OPC– Use existing plant LAN Ethernet Use existing plant LAN Ethernet
infrastructureinfrastructure
Automated Monitoring ConceptsAutomated Monitoring ConceptsAutomated Monitoring ConceptsAutomated Monitoring Concepts
LoosenessProblem!
Like Process Control for the Vibration WorldPLC
PLC
PLC
PLC
Control Room
Controllers/Servers
Network Hub,
Router, or Switch
Network Hub,
Router, or Switch
=
Customer Provided Windows 95/NT Workstation with CSI’s Online WATCH S/W loaded.
Maintenance Office
=
Customer Provided Windows 95/NT Workstation with CSI’s Online WATCH S/W loaded.
Reliability Engineering
General…to SpecificGeneral…to SpecificGeneral…to SpecificGeneral…to Specific
2301 Compressor - Asset Reliability System - CSI 4500 Series 2301 Compressor - Asset Reliability System - CSI 4500 Series Online RBMOnline RBMCONSULTANTCONSULTANTTMTM
Graphical Interfaces - OverallGraphical Interfaces - OverallGraphical Interfaces - OverallGraphical Interfaces - Overall
Graphical Interfaces - Specific FaultsGraphical Interfaces - Specific FaultsGraphical Interfaces - Specific FaultsGraphical Interfaces - Specific Faults
Overall Vibration 3.204 mils
Oil Whirl/Whip
Rubs
Unbalance
1x Peak
1x Phase
Misalignment
2x Peak
Monitored Fault Value
0.506 mils0.112 mils1.886 mils0.231 mils72 degrees0.107 mils1.886 mils
2x Phase (cracked shaft)
35 degree
Looseness
Non-Rotational
0.231 mils0.501 mils
Detect Detailed Machinery ProblemsDetect Detailed Machinery Problems– Unbalance, Misalignment, Looseness, Shaft Unbalance, Misalignment, Looseness, Shaft
Cracks, Oil Whirl, Phase, Rubs, Gear and Cracks, Oil Whirl, Phase, Rubs, Gear and Bearing ProblemsBearing Problems
Pass Information to DCS Plant Pass Information to DCS Plant Information Systems via OPCInformation Systems via OPC– Use existing plant LAN Ethernet Use existing plant LAN Ethernet
infrastructureinfrastructure
Confirm mechanical conditions will reach Confirm mechanical conditions will reach planned shutdown, i.e., planned shutdown, i.e., plant capacity plant capacity targettarget– Fix what is ‘Fix what is ‘broke’ before failurebroke’ before failure
Automated Monitoring ConceptsAutomated Monitoring ConceptsAutomated Monitoring ConceptsAutomated Monitoring Concepts
LoosenessProblem!
Outa
geFailure
Automation Technology – Best PracticesAutomation Technology – Best PracticesAutomation Technology – Best PracticesAutomation Technology – Best Practices Data-to-Information
– Assess condition/faults of machine in field• Report results – not just data
Accuracy of automated analysis– Combine analysis with machine operating condition
• Addresses false alarming
Report-upon-exception– Keep skilled analysts focused on problems
• Addresses the ‘data generator’ issue
Report-upon-Exception – not just dataReport-upon-Exception – not just dataReport-upon-Exception – not just dataReport-upon-Exception – not just data
- - - - - - - - HI - - - - - - - - - - - - - - URGENT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - HI - - - - - - - - - - - - - - URGENT - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - HI HI - - - - - - - - - - - - - CRITICAL - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - - HI HI - - - - - - - - - - - - - CRITICAL - - - - - - - - - - - - - - - - - - - - - - - - - - -
URGENCYURGENCYCriticalCriticalUrgentUrgentNotifyNotifyNormalNormal
DEADBANDDEADBAND
RATE-OF-CHANGE (ROC)
Amplitude Report Amplitude Report ((ABSOLUTE EPLISONABSOLUTE EPLISON))
AM
PLI
TU
DE
AM
PLI
TU
DE
TIME HISTORYTIME HISTORY
DEADBANDDEADBAND
ALARM TYPESALARM TYPESFaultFault HI HIHI HICautionCaution HIHICautionCaution LOLOFaultFault LO LOLO LORateRate ROCROCAmplitudeAmplitude ABS EPSABS EPS
Deadband (hysterysis) - limits annoyance alarmsDeadband (hysterysis) - limits annoyance alarms
Time ReportTime Report
ACTIONSACTIONSRelay ActivateRelay ActivateRelay ActivateRelay ActivateRelay ActivateRelay Activate
Report on Exception
!Exception
OPERATE
RELAYS
System reports only when health CHANGES
11111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111O11111111111111111111111111111111111111111111111111111O111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111O1111111111111111111111111111111111111111111111111111111111111111O111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111
Benefits of Reporting only ExceptionsBenefits of Reporting only ExceptionsBenefits of Reporting only ExceptionsBenefits of Reporting only Exceptions
Too Much Data!Automation should handle data rejection soReliability Group only has to handle EXCEPTIONS
Logic helps to ID canned observations versusreporting numbers
Allows valuable human experience to be applied to analyzing problems
Result is - Eliminate repetitive work- Easy for end user- Efficient analysis only on problems- Optimize labor effort
AgendaAgendaAgendaAgenda Industry Trends & Challenges Machinery Health Strategy Automating Decision Support Key Points
HQ
Process Plant
AOS Server
Subsidiary
EmersonServiceProfessional
Submit Data
Access to Reports via Internet Link
KEY:
ReliabilityEngineer
Process Plant
Using Web Technologies to EnableUsing Web Technologies to EnableRemote Monitoring & AnalysisRemote Monitoring & AnalysisUsing Web Technologies to EnableUsing Web Technologies to EnableRemote Monitoring & AnalysisRemote Monitoring & Analysis Provides customers with cost-effective access to
information and expertise not previously available in their own plants
Asset Management IntegrationAsset Management IntegrationAsset Management IntegrationAsset Management Integration
Motors, pumps, fans, boilers, turbinesMotors, pumps, fans, boilers, turbinesmotor control centers, transformersmotor control centers, transformers
Assets
Device
Periodic MonitoringPeriodic Monitoring
I & C monitoring, measurement, and I & C monitoring, measurement, and regulationregulation
Control Bus (FieldBus, HART, Control Bus (FieldBus, HART, ProfiBus), Ethernet LAN, modemProfiBus), Ethernet LAN, modemConnectivity
Ethernet LANEthernet LAN
World Wide WebWorld Wide Web
Control and Application
Efficiency Efficiency MonitoringMonitoring
Device Device ManagementManagement
CMMSCMMSProcessProcess Decision Decision SupportSupport
OperationOperation
Process ControlProcess Control(DeltaV)(DeltaV)
Asset ManagementAsset ManagementOptimizationOptimization
GRA
Equipment Equipment DiagnosticDiagnostic
Condition Condition MonitoringMonitoring
EnterpriseEthernet WANEthernet WAN
Asset Asset Optimization Optimization
InterfaceInterface
AMS
AO Web Services
AMSweb
RBMware
AO Web Services
RBMweb
e-fficiency
e-fficiency AO Web Services
Emerson Asset Optimization ArchitectureEmerson Asset Optimization Architecture phase1phase1 Emerson Asset Optimization ArchitectureEmerson Asset Optimization Architecture phase1phase1
Data Collector
Asset Optimization Server
AOweb
Using Advances in Web TechnologyUsing Advances in Web TechnologyUsing Advances in Web TechnologyUsing Advances in Web Technology e-fficiency AMSweb Asset Optimization
web server
Link Relevant InformationLink Relevant InformationLink Relevant InformationLink Relevant InformationEmbed links to other sources of information
Key PointsKey PointsKey PointsKey Points
Automation & Decision Support Tools help the
plant meet OUTPUT & COST targets by…
– 1. Optimize Reliability Group’s Time / Effort
– 2. Capture Plant Knowledge
– 3. Reduce O&M Costs by Managing Reliability