Given the critical nature of gas turbines in most industrial plants, their availability is of prime importance. Associated maintenance costs can also be extremely high and hence, it is a high priority to find ways of reducing maintenance costs and increasing the availability of the gas turbine. Routine preventative maintenance techniques have been used for many years to minimise major problems ...

Bus fleet data have consistently shown that vehicle operating and maintenance costs increase as vehicles age. A fleet manager has to deal with the tradeoff between the lower operating and maintenance costs of newer fleets and their higher initial capital costs as well as the tradeoff between conventional and fuel efficient bus technologies. This study formulates and implements a fleet replaceme...

On maintenance optimization for offshore wind farms FRANÇOIS BESNARD Abstract The maintenance cost is known to be an important part of the levelized cost of energy generated by wind parks. Operational costs can be significantly reduced by optimizing decisions for maintenance strategies, maintenance support organization and maintenance planning. This is especially important for offshore wind pow...

In this article the potential of Radial Basis Function Neural Network (RBFNN) technique has evaluated as an alternative method for the prediction of tractor repair and maintenance costs. The study was conducted using empirical data on 60 two-wheel drive tractors from Astan Ghodse Razavi agro-industry in Iran. In this paper, the performance of Basic Back-propagation (BB) training algorithm was a...

This thesis describes a software distribution and maintenance system that reduces administration costs while increasing survivability. Contributions include design, implementation, and analysis. The system applies automation wherever possible and takes maximum advantages of economies of scale. The implementation extends an existing replication tool to provide multiplatform support, user assiste...

OBJECTIVE To describe the real-world use of adalimumab for maintenance treatment of ulcerative colitis (UC) and associated healthcare costs in English hospitals. DESIGN Retrospective cohort study. SETTING Analysis of NHS Hospital Episode Statistics linked with pharmacy dispensing data in English hospitals. PATIENTS Adult UC patients receiving ≥240mg during adalimumab treatment induction, ...

We introduce the preventive maintenance scheduling problem with interval costs (PMSPIC), which is to schedule preventive maintenance (PM) of the components of a system over a finite and discretized time horizon, given a common set-up cost and component costs dependent on the lengths of the maintenance intervals. We present a 0-1 integer linear programming (0-1 ILP) model for the PMSPIC; the mod...

Many of today’s information system products (ISPrs) have a small customer base of maybe five to ten or twenty customers. This puts the vendors into a dilemma. The ISPrs share much of the complexity of mass products, but the vendors cannot afford similar maintenance cost structures. This paper provides guidelines for vendors in such a dilemma. Therefore, it analyzes how the ISPr product version ...