Assessing the potential cost savings of introducing the maintenance option of ‘Economic Tyre Turning’ in Great Britain railway wheelsets

•Statistical models assess wear, damage and maintenance impact in railway wheelsets.•Savings of ETT in maintenance of wheelsets are assessed using a LCC model.•A Monte Carlo procedure samples from statistical models and feeds the LCC model.•Fixed and Random Effects are controlled in the Monte Carlo...

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Bibliographic Details
Published in:Reliability engineering & system safety 2017-12, Vol.168, p.317-325
Main Authors: Andrade, Antonio Ramos, Stow, Julian
Format: Article
Language:English
Subjects:
Computer simulation
Cost engineering
Cost reduction
Impact damage
Life cycle assessment
Life cycle costs
Maintenance
Mathematical models
Monte Carlo simulation
Railroads
Railway networks
Railways
Reliability engineering
Repair & maintenance
Simulation
Statistical analysis
Statistical methods
Trajectory analysis
Wheelsets
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Summary:•Statistical models assess wear, damage and maintenance impact in railway wheelsets.•Savings of ETT in maintenance of wheelsets are assessed using a LCC model.•A Monte Carlo procedure samples from statistical models and feeds the LCC model.•Fixed and Random Effects are controlled in the Monte Carlo simulation procedure.•ETT may provide savings of around 0.8–4.4% or 2.0–4.7% against other strategies. This paper assesses the potential cost savings of introducing a maintenance option known as ‘Economic Tyre Turning’ (ETT) in railway wheelset maintenance in Great Britain. It first develops a life-cycle cost model and puts forward a Monte Carlo simulation procedure to assess the life-cycle costs of different maintenance strategies, including ETT. This Monte Carlo simulation procedure samples from statistical degradation models that estimate the evolution of wear and damage trajectories of different wheelsets, and the maintenance impact of wheel turning in the loss of diameter in a more realistic manner by controlling random effects related to unit, vehicle and month of measurement. The main findings suggest that ETT may provide potential savings of around 0.8% up to 4.4% when compared to a simple wheelset renewal strategy, and between 2.0% and 4.7% cost savings when ETT is used in association with more complex strategies.
ISSN:0951-8320
1879-0836
DOI:10.1016/j.ress.2017.05.033