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A multi-criteria model for maintenance job scheduling

Author(s): Sunday A. Oke

Journal: Maejo International Journal of Science and Technology
ISSN 1905-7873

Volume: 2;
Issue: 01;
Start page: 1;
Date: 2007;
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Keywords: multi-criteria analysis | decision-making | maintenance-scheduling | optimisation | truck plant

This paper presents a multi-criteria maintenance job scheduling model, which is formulated using a weighted multi-criteria integer linear programming maintenance scheduling framework. Three criteria, which have direct relationship with the primary objectives of a typical production setting, were used. These criteria are namely minimization of equipment idle time, manpower idle time and lateness of job with unit parity. The mathematical model constrained by available equipment, manpower and job available time within planning horizon was tested with a 10-job, 8-hour time horizon problem with declared equipment and manpower available as against the required. The results, analysis and illustrations justify multi-criteria consideration. Thus, maintenance managers are equipped with a tool for adequate decision making that guides against error in the accumulated data which may lead to wrong decision making. The idea presented is new since it provides an approach that has not been documented previously in the literature.
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