This paper presents a special case of integration of the preventive maintenance into the repair/replacement policy of a failure-prone system. The machine of the considered system exhibits increasing failure intensity and increasing repair times. To reduce the failure rate and subsequent repair times following a failure, there is an incentive to perform preventive maintenance on the machine befo...

The proper maintenance strategy is significant in extending assets and equipment, thus saving within an organization. Currently, there are three types of strategies implemented the Royal Malaysian Air Force (RMAF), namely Reactive Maintenance (RM), Preventive (PM), Condition Based (CBM). Due to constraints terms costs by RMAF, choosing right important ensure that provision can be optimized. In ...

This paper deals with preventive maintenance optimization problem for multi-state systems (MSS). This problem was initially addressed and solved by Levitin and Lisnianski [Optimization of imperfect preventive maintenance for multi-state systems. Reliab Eng Syst Saf 2000;67:193–203]. It consists on finding an optimal sequence of maintenance actions which minimizes maintenance cost while providin...

I n the past many decades, breakdown, maintenance and replacement issues of deteriorating machines and systems are extensively studied within the literature. A number of maintenance and replacement models, techniques and policies are created, documented and tested. However, of these models are comprised of some classes ∗M.Tech. Student, Department of Mechanical Engineering, Madhav Institute of ...

For a repairable and deteriorating system, the theoretical preventive maintenance (PM) models are usually complicated and need numerical methods to obtain the optimal PM policies since the system’s failure rate function is changed after each PM. It makes the application of the theoretical model not quite suitable for real cases. Moreover, the theoretical optimal PM solution is obtained by evalu...

We consider a system which has an observable randomly changing increasing parameter φ(t). The observation is either continuous or discrete on a time scale with step δ. System's output on [0,t] depends on φ via the following reward functional: ∫ − = t dx x H t A 0 , ))] ( ( [ ) ( φ ψ where ψ(·)is a known increasing function. The operation and observation process can be stopped for a preventive m...

Abstract: A condition based preventive maintenance (CBPM) policy is proposed for a continuously operating device whose condition deteriorates with time in service. The model incorporates both deterioration and random failures. Deterioration is modeled as discrete states process. The system undergoes random inspections to know the condition, mean time between inspections are exponentially distri...

This paper studies preventive maintenance (PM) in simultaneously considering three actions, mechanical service, repair and replacement for a multi-components system based on availability. Mechanical service denotes the activities including lubricating, cleaning, checking and adjusting, etc. which is set to alleviate strength degradation. Repair is defined on that not only slow down the degraded...

Article history: Received 28 October 2011 Accepted December, 5 2011 Available online 8 December 2011 Continuous generation of electricity of a power plant depends on the higher availability of its components/equipments. Higher availability of the components/equipments is inherently associated with their higher reliability and maintainability. This paper investigates the reliability, availabilit...