Maintenance has been acknowledged by industrial management as a significant influencing factor of plant performance. Effective plant maintenance can be realized by developing a proper maintenance strategy. However, selecting an appropriate maintenance strategy is difficult because maintenance is a non-repetitive task such as production activity. Maintenance also does not leave a consistent trac...

the conventional method towards deriving schedule for a fleet of ships to minimize cost alone has the short-coming of not addressing the problem of operation revenue losses associated with delays during maintenance at ships dockyards. in this paper, a preventive maintenance schedule for a fleet of ships that incorporates op-portunity cost is presented. the idea is to assign a penalty cost to al...

In this research, we study an optimal overhaul–replacement policy of a multi-degraded repairable system sold with a free replacement warranty. In the proposed replacement policy, a maintenance action and failure are dependent on a system degradation level and the system age, and hence the replacement model will provide more effective maintenance decisions. Failure of the system is modeled using...

This paper proposes a diagnostic technique that can predict component degradation for number of complex systems. It improves and clarifies the capabilities previously proposed approach, by identifying severity examined components, uses 3D Principal Component Analysis approach to provide an explanation observed accuracy. The results are then used, in systematic way, influence maintenance decisio...

a few years after the implementation of computerize maintenance management systems (cmms), showing the analysis results of the collected data in these systems is necessary and important for continuing the usage of these systems. equipment downtime and cost data can identify patterns of equipment faults and equipment costs. it can also show deficiencies in the implementation of maintenance syste...

This paper draws on the “human reliability” concept as a structure for gaining insight into the maintenance workforce assessment in a process industry. Human reliability hinges on developing the reliability of humans to a threshold that guides the maintenance workforce to execute accurate decisions within the limits of resources and time allocations. This concept offers a worthwhile point of de...

In December, 2010, Canada's 6 year old Assisted Human Reproduction Act was successfully challenged in the Supreme Court of Canada. There may be important implications for public health and the evolution of reproductive technologies in this country.

Can the modern economy function without a market for interestbased credit? This question has acquired some urgency in the wake of the recent Shariat Court ruling banning interest in Pakistan. Some pundits have pronounced that great harm will result from the banning of interest. Actually, such pronouncements are based on a lack of understanding of both the modern economic system, as well as the ...