In today's competitive market, quality has an important role in manufacturing system. The manufacturers attempt to maintain their production system in a proper condition to produce high quality products. One of the key factors to achieve this goal is maintenance policy. Most studies on maintenance focused on machines and less attention has been paid to human resources as the most important fact...

This paper deals with a condition-based maintenance policy for continuously degrading system to reduce the excessive environment degradation. This maintenance policy consists on maintaining the system with respect to a given threshold level of degradation. Such a level is measured by sequential inspections. According to statistical knowledge of degradation level, a preventive maintenance action...

This paper deals with the condition-based maintenance of single-unit systems which are subject to the competing and dependent failures due deterioration and traumatic shock events. The main aim is to provide a model to assess the value of condition monitoring information for the maintenance decision-making. A condition-based periodic inspection/replacement policy is developed and compared with ...

This paper studies a maintenance policy for a system composed of two components, which are subject to continuous deterioration and consequently stochastic failure. The failure of each component results in the failure of the system. The components are inspected periodically and their deterioration degrees are monitored. The components can be maintained using different maintenance actions (repair...

Maintenance is one of the most critical tasks during the operation of a system. The reason is profound as it has effect on the life extension of its components and provides also a better delivered quality of service. Thus a maintenance policy may increase the reliability, the availability and other performance indicators which are mainly used to measure maintenance efficiency, but it also incre...

Purpose Maintenance policy is an element of building maintenance management that deals with organisation policy, planning and procedures, delineates how units in will manage specific components, auxiliary facilities services. Given this contextual setting, study investigates whether organisational policies (OMPs) utilised developed countries are relevant developing – using Nigeria as a case exe...

Airline maintenance operations affect the potential for flight delays and can also affect flight safety if signals of technical problems are missed or misinterpreted. In this paper, we use a probabilistic risk analysis model, represented by an influence diagram, to quantify the effect of an airline’s maintenance policy on delays, cancellations and in-flight safety. The model represents the lead...

A new maintenance policy which minimizes the total expected servicing cost for an item with two–dimensional warranty is proposed. An iterative procedure to estimate the item’s failure rate function from historical observations and an optimization algorithm based on Monte Carlo simulation are applied to obtain the best maintenance policy. Numerical examples and sensitivity analysis are presented.

Within the Department of Defense (DoD), mission-critical software maintenance has been reported to cost between $700 million and $20 billion annually. The wide range of estimates results from uncertainty over the definitions of “mission-critical” and “software maintenance” as well as the lack of any catalog of performing activities. The problem is deeper than definitions and level of investment...