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Implementing risk based maintenance concepts.

Implementing risk based maintenance concepts. Leen Vooijs. Performance contract TOC’s. Lack of Budget. 35-40 % less failures in 2005. Decreasing knowledge. Maintenance manager. More preventive maintenance. Output Maintenance Contracts. Lack of information. Present situation

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Implementing risk based maintenance concepts.

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  1. Implementing risk basedmaintenance concepts. Leen Vooijs

  2. Performance contract TOC’s Lack of Budget 35-40 % less failures in 2005 Decreasing knowledge Maintenance manager More preventive maintenance Output Maintenance Contracts Lack of information Present situation in the Netherlands 2

  3. Maintenance manager What will be the cost of a better performance? How do we ensure the contracted performance? Why is maintenance so expensive? What are the effects of cutting budgets? What do we have to pay for 1% more availability? What are the best actions to be taken to improve performance? 3

  4. Essence of these questions: • What is the (quantitative) relation between maintenance(cost) as input and performance of infrastructure as output ? • And how to manage this relation ? 4

  5. How to answer that question? • Looking for a systematic approach to link maintenance activities to performance. • Based on risks • Usable for evaluation and planning. 5

  6. Failure mode Causes Effect Criticality analysis Preventive activities Repair activities Using the FMECA. Object Statistical information Company objectives Maintenance concept Model 6

  7. Simulation and results (prediction) 7

  8. Comparingscenario's Without Preventive maintenance: With Preventive maintenance: 8

  9. Moment a disturbance occurs. Condition (t) % 100 80 0 t μ = MTTF f(t) 0 t • Object / • part • Risk • (cost) • Risk (Availability) μ = MTTF • Cable • 64 • 216 • Casing • 64 • 1 • Light • 2 • 432 Lead-Time Actual Optimizer Supports maintenance engineer in: • Pointing critical installations/components • Setting of inspection frequencies • When preventive maintenance has to be done • When modification of components/installations will be effective 9

  10. Year activity proposal 10

  11. Basis for activities. • Rules and regulations will be based on risks. • Proposals for modification of installations, methods of regulation will be based on analysis of risks referring to usage. Effect: the risks and the effects are subject of discussion, not the activities itself. 11

  12. Relation with contractors (1). Performance specifications ProRail In this area ProRail and the contractor have to discuss improvements, methods and activities. Defining necessary activities Contractor Execution of activities Performance results 12

  13. Relation with contractors (2). • Discussing improvements, methods and activities is: • MAINTENANCE ENGINEERING. • And risk based maintenance concepts will be the common language. 13

  14. Actual status. • Generic concepts for 18 objects available. • Maintenance concepts still to be implemented. • Discussion about how to use maintenance concepts in maintenance contracts • Optimisation to be started. 14

  15. Thank you for your attention Any questions ? 15

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