Authors: Christos C. Vasileiou, George J. Besseris
Addresses: Department of Mechanical Engineering, Technological and Educational Institute of Piraeus (T.E.I. Piraeus), P. Ralli & Thivon Avenue 250, Egaleo 12224, Athens, Greece; Kingston University, Penrhyn Road, Kingston upon Thames, KT1 2EE, London, England, UK. ' Department of Mechanical Engineering, Technological and Educational Institute of Piraeus (T.E.I. Piraeus), P. Ralli & Thivon Avenue 250, Egaleo 12224, Athens, Greece; Kingston University, Penrhyn Road, Kingston upon Thames, KT1 2EE, London, England, UK
Abstract: In this paper, a reliability and maintainability analysis concerning several automated mechanical equipments in three bakery production lines in Vivartia S.A. is presented. Failed machine forces upstream line at the point where the failure appeared to operate without material processing whereas the material itself (raw, intermediate or end-product) of the downstream line may be scrapped due to a down-graded quality level. Based on collected data pertaining past failures, descriptive statistics of failure and repair data, the identification of the most important failure modes, and the determination of the most suitable theoretical distributions parameters to be applied were determined. Furthermore, key reliability parameters for the examined production machinery were obtained. The reliability analysis that we undertook may prove to be useful as a case study in evaluating reliability concerns leading to the development of an improved maintenance policy in equipments associated with the baking industry. Moreover, maintenance engineers in food industry may be benefited from this report when designing and analysing overall equipment efficiency.
Keywords: reliability analysis; availability; machine failure; maintenance policy; Weibull distribution; Pareto analysis; bakery products; maintainability analysis; production machinery; food industry.
International Journal of Quality Engineering and Technology, 2011 Vol.2 No.2, pp.95 - 113
Published online: 18 Mar 2011 *Full-text access for editors Access for subscribers Purchase this article Comment on this article