Maintenance actions

Abstract: Over the last few decades the maintenance of systems has become more and more complex. One reason for this is that systems consist of many components which depend on each other. On the one hand, interactions between components complicate the modelling and optimization of maintenance. On the other hand, interactions also offer the opportunity to group maintenance which may save costs. It follows that planning maintenance actions is a big challenge and it is not surprising that many scholars have studied maintenance optimization problems for multi-component systems. In some articles new solution methods for existing problems are proposed, in other articles new maintenance policies for multi-component systems are studied. Moreover, the number of papers with practical applications of optimal maintenance of multi-component systems is still growing.

Abstract: Maintenance of goods producing systems is undertaken on the principle of minimum cost whereas the maintenance of service producing systems is done on the principle of operational reliability. High pressure boilers, elevator ropes, aeroplane engines, subway tunnels, suspension bridges, air conditioning and transportation networks are examples of such systems. In this paper, reliability models are built for a service producing system which works intermittently, is subject to wear, and can be improved through maintenance actions like cleaning, lubrication, realignment, etc.-short of replacement. Finally an application is shown and maintenance scheduling is developed through an example.