SBB Rail serviced its rolling stock at fixed time intervals. A diagnosis of the actual wear and tear of the trains would permit them to run longer and reduce operating costs. Zühlke was given the task of conducting a study to help assess the cost-effectiveness of a targeted use of diagnostic data for conditionbased maintenance.
The goals were, specifically, a greater availability of trains, quicker analysis of fault causes, and cost reductions through preventive maintenance of the rolling stock. Zühlke was to develop approaches for optimization and identify a gradual transition to condition-based maintenance.
Zühlke selected a representative section of the fleet to analyse the status quo. In joint workshops involving Zühlke, staff from different service centres and other areas at SBB, the key cost drivers of current maintenance activities were identified.