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Consideration of operating environment when optimizing spare parts inventories
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Operation, Maintenance and Acoustics.
2009 (English)In: 2009 proceedings: 15th ISSAT International Conference Reliability and Quality in Design : August 6 - 8, 2009, San Francisco, California, USA / [ed] Hoang Pham, Piscaaway, NJ: International Society of Science and Applied Technologies , 2009, 315-319 p.Conference paper (Refereed)
Abstract [en]

Spare parts estimation, consumption and management are greatly influenced by the reliability characteristics of system or components under consideration. Any maintenance policies and spare parts planning without considering the reliability characteristics are not optimum. Therefore it is important to study and analyse the reliability characteristics before making decision concerning spare parts planning. It is known that the operating environmental conditions in which the system is to be operated, such as temperature, humidity, dust, load, voltage stress, etc. often have considerable influence on its reliability characteristics. These factors, in fact affect the failure rate of a repairable system and non-repairable component, but are usually ignored in the reliability analysis. In general, new products are often used under conditions that are not anticipated. It is common to modify the predicted life length and reliability characteristics of product by considering the environmental and other factors. In this paper a general approach of integrating the system operating environment in dimensioning of spare parts planning is briefly studied. Two approaches, Poisson and renewal process are considered in the analyses of system/component failure behaviour. Eventually, two case studies that are used the mentioned methods are presented. The main purpose of the paper is to highlight the effect of system operating environment in system behaviour and consequently spare parts needs.

Place, publisher, year, edition, pages
Piscaaway, NJ: International Society of Science and Applied Technologies , 2009. 315-319 p.
Research subject
Operation and Maintenance
Identifiers
URN: urn:nbn:se:ltu:diva-40470Local ID: f9ef159d-9474-467f-9334-022e4cd8fc04ISBN: 9780976348658OAI: oai:DiVA.org:ltu-40470DiVA: diva2:1013992
Conference
ISSAT International Conference on Reliability and Quality in Design : 06/08/2009 - 08/08/2009
Note
Godkänd; 2009; 20111121 (behzad)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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