Knowledge requirements for rolling stock maintenance

1. Knowledge requirementsfor rolling stock maintenance TU Eindhoven – 3rd of May 2006 by Bob Huisman (b.huisman@nedtrain.nl) NedTrain - Fleet Management Strategic Development

2. NedTrain is part of the NS Group • NedTrain provides • Rolling Stock Maintenance, Cleaning and Overhauling TU Eindhoven - 3rd of May 2006

3. Double goal:effectiveness and efficiency TU Eindhoven - 3rd of May 2006

4. Goal 1: to maintain system functionality (effectiveness) 100% 100% 100% How do functions evolute? When is a functional failure to be expected? Time Yesterday Today Tomorrow? What maintenance is required? When? TU Eindhoven - 3rd of May 2006

5. Goal 2: to minimize means of production (efficiency) 100% 100% 100% 100% Fleet availability Past Future Use of maintenance means of production Past Future TU Eindhoven - 3rd of May 2006

6. Effective maintenance:derive required maintenancefrom technical conditionof individual systemsby intelligent reasoning TU Eindhoven - 3rd of May 2006

7. How to predict degradation and failure? 100% New - Time Time Time Function Extrapolation Functionality enables/disables function Cause-effect analysis Component Dimension, quantity influences technical condition Wear and tear modelling Use Cycles, energy Now TU Eindhoven - 3rd of May 2006

8. Complex interaction between use, components and functions Function A Function B Function C Function D Component 1 Component 2 Component 3 Component 4 Technical system Usage Incidents Environment Maintenance TU Eindhoven - 3rd of May 2006

9. Component tree Train Consists of Is part of Coach Coach Coach Boogie Boogie Wheel set Motor Wheel set Subsystem TU Eindhoven - 3rd of May 2006

10. Function tree To remain on track To drive To accelerate Requires To decelerate To transport passengers To control climate To offer comfort To offer seats To inform TU Eindhoven - 3rd of May 2006

11. Relations between functions and components To transport passengers Train To drive Energy supply Boogie To accelerate To remain on track Wheel set Motor TU Eindhoven - 3rd of May 2006

12. RCM (Reliability-Centred Maintenance) analysis Enable train driver to brake and to stop Function Triple valve leaks, caused by dirt Root failure Air pressure drops, coach does not brake, causing lower train deceleration Failure effect Train at 140 km/h does not stop within 1000m Functional failure Failure does effect safety directly Business consequence Frequent test of brake system Maintenance TU Eindhoven - 3rd of May 2006

13. Complex cause-effect relations Function Function Functional failure Functional failure Functional failure Functional failure Failure effect Failure effect Failure effect Failure effect Root failure Failure effect Root failure Failure effect Root failure Root failure TU Eindhoven - 3rd of May 2006

14. System design, maintenance engineering and operation Requirements, Environment, Use Design of Technical system Phase 1 Maintenance engineering Maintenance plan Expected conditions and use Phase 2 Construction Technical system Maintenance Real life Technical system Phase 3 Technical system TU Eindhoven - 3rd of May 2006

15. Derive required maintenance continuously during operation Required Maintenance Measurement Required Maintenance Design, Requirements, Environment, Use Knowledge Technical system Technical system Maintainer Technical system Maintenance plan Jobs Configuration Maintenance rules and job descriptions Computer system Mimic model (not perfect) Mimic model (not perfect) Mimic model (not perfect) Observer and interpretator Configuration Technical status Synchronisation Predictive model (not perfect) Predictive model (not perfect) Predictive model (not perfect) Expected use Expected status TU Eindhoven - 3rd of May 2006

16. Implementation model TU Eindhoven - 3rd of May 2006

17. Ontologies en RDF TU Eindhoven - 3rd of May 2006

18. Efficient maintenance:derive maintenance schedulefrom required maintenanceand availability of means of productionby intelligent reasoning and negotiation TU Eindhoven - 3rd of May 2006

19. Scheduling manufacturing orders Order Design Quality Price Delivery date Quantity Supplier Manufacturing Supplier New products Supplier Production & Delivery orders Backwards scheduling (Pull) TU Eindhoven - 3rd of May 2006

20. Traditional rolling stock maintenance scheduling Contract Throughput Quality Price Maintenance plan Supplier Maintenance production Maintained products Supplier Technical condition Production order Local scheduling Arrival & Inspection orders Scheduling (Push) km-counter TU Eindhoven - 3rd of May 2006

21. Future maintenance scheduling Technical condition Transport operations Maintenance plan Required maintenance Availability of staff, shop and stock Required staff, shop and stock Maintenance schedule TU Eindhoven - 3rd of May 2006

22. Rolling stock condition based maintenance scheduling Contract Throughput Quality Price Maintenance plan Supplier Maintenance production Maintained products Supplier Production & Delivery orders Technical condition Backwards scheduling (Pull) Generate maintenance required Request TU Eindhoven - 3rd of May 2006

23. Maintenance scheduling by a Multi Agent System (Society) Maintenance rules Configuration Agent (train ) Agent (train ) Agent (depot ) Intelligent agent (operator ) Intelligent agent (train ) Intelligent agent (depot ) Co-ordination Negotiation Status Availability Time table Transport orders Work orders Train Train Depot Operator Train Depot TU Eindhoven - 3rd of May 2006

24. Where do we need knowledge of operation? Trains Trains Strategic (Rolling Stock, Locations, Contracts) Government, Authorities Performance Requirements Fleet Performance Railway Operators Tactical (Maintenance Plans, Means of Production, Organisation) Rolling Stock Manufactures Performance of Rolling Stock and Maintenance Results Maintenance Plans Operational (Maintenance Planning and Control) Infrastructure Managers Traffic Control Operation Data Diagnostic Data Inspection and Maintenance Orders Technical Condition of Rolling Stock Depot / Workshop (Performing Maintenance) TU Eindhoven - 3rd of May 2006

25. Thanks for Your Attention! Any questions? TU Eindhoven - 3rd of May 2006