Improvements in aircraft availability allow better assignment of aircrafts to specific missions. Aircraft Availability is important to reach the organisational goals like ‘air power’ and mission availability. The performance indicator Aircraft Availability gives insight of the contribution to the mission capability of the fleet. Depending on the goal, there are different ways to calculate Aircr...

To estimate the corrective software maintenanceeffort, we must know the factors that have the strongestinfluence on the effort of corrective maintenance activities.In this study, we have analyzed activities and effort ofcorrecting 810 software defects in one Norwegian softwarecompany and 688 software defects in another. We comparedthe defect profiles according to the def...

This paper proposes, from the economical viewpoint of preventive maintenance in reliability theory, several preventive maintenance policies for an operating system that works for jobs at random times and is imperfectly maintained upon failure. As a failure occurs, the system suffers one of two types of failure based on a specific random mechanism: type-I (repairable) failure is rectified by a m...

This paper studies the joint production/inventory and condition-based maintenance control for a multi-product manufacturing system with setup times under stochastic product demands. The problem is modelled as semi-Markov decision process (SMDP). objective to find production policy that minimizes long run expected discounted cost including setup, holding, lost sales, preventive corrective costs....

Mesin-mesin di PT IJK bekerja selama 22 jam setiap hari untuk memenuhi kebutuhan konsumen yang tinggi. Sehingga perlu dilakukan perawatan mesin, menerapkan corrective maintenance dan juga preventive pada beberapa mesin saja. Tujuan dari penelitian ini ada dua. Pertama adalah membuat penjadwalan maintenance. Kedua mengetahui potensi kegagalan jenis tindakan perawatan. Penelitian divisi refrigera...

Maintenance and, in particular, maintenance policy plays a major -*art in achieving systems operational effectiveness at minimkm cost. The traditional approach to maintenance planning involves selecting optimal policies from known maintenance strategies such as scheduled inspection, preventive maintenance, corrective maintenance, oncondition maintenance etc. Using a traditional approach one may...

In this paper we deal with the integrated supply chain management problem in the context of a single vendorsingle buyer system for which the production unit is assumed to randomly shift from an in-control to an out-of-control state. At the end of each production cycle, a corrective or preventive maintenance action is performed, depending on the state of the production unit, and a new setup is c...

Mesin diesel sebagai mesin induk di kapal dapat berfungsi dengan baik apabila ditunjang oleh sistem-sistem pendukung yang seperti sistem pelumas (lubricating oil system). Sistem salah satu sangat penting dalam pengoperasian kapal, kegagalan pada pelumasan menyebabkan tidak beroperasi semestinya dan mengalami kerugian dari pihak kapal. Kajian ini bertujuan untuk mengetahui kagagalan setiap kompo...

a r t i c l e i n f o For the 'under maintained' and 'over maintained' problems of traditional preventive maintenance, a new predictive maintenance policy is developed based on process data in this article to overcome these disadvantages. This predictive maintenance method utilizes results of probabilistic fault prediction, which reveals evolvement of the system's degradation for a gradually de...