Prognostics concept Maintenance requirements Identification and criticality assessment

Prognostics concept Maintenance requirements Identification and criticality assessment of the operational faults of the system Determination of the applicable and profitable maintenance methods and strategies Breakdown maintenance Preventive maintenance Condition monitoring Predetermined maintenance Cumulative data -operation time -loads -power -etc… Predictions -risk level -remaining useful life (distributions) Component level fault detection; short term predictions Equipment level medium term predictions Condition based planned repairs Predictions based on fault statistics -disturbances -number of faults, -need for repairs -need for spare parts Averaged long term predictions Prognosis of the condition and service needs of the targets Measurement based diagnostics and prognostics Planning of the maintenance programme Specification of the objectives of the operation of the production system or equipment, its operational state, environment and reliability

Diagnostics & Prognostics Multiple-source data fusion, Data analysis, reasoning Models, expert evaluation, trend monitoring, fuzzy logic, neural nets, … Experience based tacit knowledge Condition monitoring Signal analysis Data acquisition (on-line / off-line) Process Automation and Control Operational data, Process conditions and operational disturbances Inspection and Maintenance Actions NDT, Visual examination, Replica techniques Selection of monitoring method Critical machine / component Service and repair data, fault history

Component level fault detection; short term predictions Scheduled shutdown

Equipment level medium term predictions

Long term predictions at system level based on statistics