In this paper, a comparative analysis of the metaheuristic maintenance optimization of refuse collection vehicles (RCV) using the Taguchi experimental design is presented based on a RCV model as a multi-state degradation system with two dependent subsystems. The model which is based on a probabilistic approach includes two stochastic degradation processes, a random failure process and a set of ...

This paper describes a new maintenance selection and scheduling approach for bulk transmission equipment that is based on the cumulative long-term risk caused by failure of each piece of equipment. This approach not only accounts for equipment failure probability and equipment damage, as do reliability centered maintenance (RCM) approaches, but it also accounts for the outage consequence in ter...

This paper presents an integer programming formulation for integrating maintenance planning tasks in the railway rolling stock circulation problem. This is a key problem in railway rostering planning that requires to cover a given set of services and maintenance works with a minimum amount of rolling stock units. An additional objective is to limit the number of empty rides. The constraints of ...

This paper deals with the modeling of a preventive maintenance strategy applied to a single-unit system subject to random failures. According to this policy, the system is subjected to imperfect periodic preventive maintenance restoring it to ‘as good as new’ with probability p and leaving it at state ‘as bad as old’ with probability q. Imperfect repairs are performed following failures occurri...

In this paper, a novel predictive maintenance policy with multi-level decision-making is proposed for multi-component systemwith complex structure. The main idea is to propose a decision-making process considered on two levels: system level and component one. The goal of the decision rules at the system level is to address if preventive maintenance actions are needed regarding the predictive re...

On maintenance optimization for offshore wind farms FRANÇOIS BESNARD Abstract The maintenance cost is known to be an important part of the levelized cost of energy generated by wind parks. Operational costs can be significantly reduced by optimizing decisions for maintenance strategies, maintenance support organization and maintenance planning. This is especially important for offshore wind pow...

Proper maintenance of plant equipment can significantly reduce the overall operating cost, while boosting the productivity of the plant. Therefore Maintenance planning is carried out in a area where the frequent failure occurs. The raw mill section is chosen due to its critical failure nature. The various subsystems of the raw mill system are: air slide, conveyor assembly, impact crusher, separ...

This paper presents an optimization approach to identify aircraft dispatching strategy at a flight training school. The strategy adopted by the school was to dispatch the aircraft which is closest to its scheduled maintenance. This strategy was examined and compared with other potential dispatching strategies. The paper presents a mixed integer linear programming model to identify the strategy ...

The optimal maintenance scheduling of systems with degrading components is highly coupled with the design of the system and various uncertainties associated with the system, including the operating conditions, the interaction of different degradation profiles of various system components, and the ability to measure and predict degradation using prognostics and health management (PHM) technologi...