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Airline maintenance is a significant contributor to the overall operating costs of airlines, making up 11% of the total operating costs. In fact, the cost of airline maintenance has steadily increased in recent years. An improvement in the approach airlines take to maintain aircraft is needed to reverse this trend. Currently, aircraft operators use a preventative maintenance approach, where parts...
This paper develops a cost rate function (CRF) to identify the optimum interval and frequency of inspection and restoration of aircraft's repairable components which are undergoing aging, and whose failures are hidden, i.e. are detectable by inspection or upon demand. The paper considers two prevalent strategies, namely Failure Finding Inspection (FFI), and a combination of FFI with restoration actions...
Nowadays the optimized use of financial resources plays a central role in all areas and hence also in electric power companies. Consequential the utilities are anxious to keep the level of the operational expenditures (OPEX) as low as possible. The determination of the capital and operational expenditures (CAPEX and OPEX) will be done with the aid of an evaluated ageing model for 110-kV circuit-breakers...
This article deals with the maintenance optimization of a train air conditioning system. Indeed, SNCF (French Railway Company) which has in charge the maintenance of its rolling stock, is involved in research efforts in order to improve its techniques and efficiency in this field. In order to model this system, we use dynamic reliability method, the Piecewise Deterministic Markov Processes (PDMP)...
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