Title: Determining appropriate maintenance strategy based on decision making grid, Sigma level, and process capability index - with a case study in a steel company

Authors: Arash Shahin; Noushin Ghofrani Isfahani; Seyed Akbar Nilipour Tabatabaei

Addresses: Department of Management, University of Isfahan, Hezar Jarib St., 81746-73441, Isfahan, Iran ' Department of Management, University of Isfahan, Hezar Jarib St., 81746-73441, Isfahan, Iran ' Faculty of Industrial Engineering, Malek Ashtar University of Technology, P.O. Box 83145/115, Fersowsi Boulevard, Shahin Shahr, Isfahan, Iran

Abstract: In this study, a new approach has been proposed for selecting appropriate maintenance strategies. For this purpose, decision making grid (DMG) has been developed. Sigma level and process capability indexes have been used based on the metric of mean time between failures (MTBF). The proposed approach has been examined on 26 equipments of a steel manufacturing company. Findings imply that a relatively more logical and appropriate set of maintenance strategies can be determined for equipments based on the proposed approach.

Keywords: decision making grid; DMG; six sigma; mean time between failures; MTBF; mean time to repair; MTTR; maintenance strategy; process capability index; steel industry.

DOI: 10.1504/IJAMS.2013.055442

International Journal of Applied Management Science, 2013 Vol.5 No.3, pp.265 - 280

Published online: 30 Jan 2014 *

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