Under the pressure of electric power industry deregulation, the approaches to many traditional power system problems are being reconsidered. Important concerns have arisen with regards to equipment condition monitoring, preventive maintenance and system reliability calculations. Approaches to condition monitoring and maintenance have historically been ad hoc tending to follow broad company guid...

In this paper, a real maintenance workforce-constrained scheduling problem is formulated as a bi-objective mixed-integer programming model with the aim of simultaneously minimizing the workforce requirements and maximizing the equipment availability. The skilled workforce is provided by internal and external resources using regular time, overtime and contracting. The equipment availability is m...

This paper presents a hybrid particle swarm optimization based genetic algorithm and hybrid particle swarm optimization based evolutionary programming for solving long-term generation maintenance scheduling problem. In power system, maintenance scheduling is being done upon the technical requirements of power plants and preserving the grid reliability. The objective function is to sell electric...

Preventive maintenance (PM) in the production industry is one of most essential measures to eliminate accidental machinery failures by replacing/repairing worn out machines or parts. The decision when and where perform preventive non-trivial due complex stochastic nature PM implemented. This article deals with theoretical practical implementation based on a unique modification total productive ...

The study presented herein is aimed towards improvement of nuclear power plant safety by utilizing the probabilistic safety assessment methodology. A new time-dependent unavailability model of ageing safety equipment within the nuclear industry is proposed. Equipment ageing along with effects of corrective maintenance and preventive maintenance are modelled as an integral part of the new time-d...

I nterest has increased throughout the oil and gas industry regarding fixed installation of hydrogen sulfide (H2S) and flammable gas indicators as supplemental protection for personnel and facilities. Consistent with this interest is a need for better understanding of the function and limitations of such equipment, especially when evaluating its application to specific operations. The first pri...

In this paper, we consider a production system that must achieve a set of different requests during a finite horizon period. Among the various requests proposed, the objective is to select those to be satisfied so as to maximize the net profit. A sporadic maintenance policy is studied to minimize the maintenance costs by the achievement of perfect preventive maintenance actions after the comple...

Industrial equipment is usually repairable. Reliability of repairable systems depends on maintenance actions, and is characterized by mean cumulative function or failure intensity function of failure processes. Evolution trend of the failure intensity function is called the system-level failure pattern in the literature. The failure pattern plays an important role in preventive maintenance deci...

Preventive maintenance is a broad term that encompasses a set of activities aimed at improving the overall reliability and availability of a system. Designers of the preventive maintenance schedules attempt to minimize the overall cost of system operation. There is no substitute for perfection in maintenance to ensure zero breakdowns in machine; therefore it is necessary to get a machinery brea...