Optimal JIT safety stock and buffer inventory for minimal repair and regular preventive maintenance

Shibaji Panda

International Journal of Operational Research, 2007, vol. 2, issue 4, 440-451

Abstract: A regular preventive maintenance strategy is proposed for a Just-in-Time (JIT) production structure to minimise the system running cost. Due to imperfect repair the production unit is in a state somewhere between good and bad. Consequently the system's effective age reduces as time progresses. As effective age reduces, the system randomly fails to operate and undergoes minimal repair between consecutive preventive maintenance schedules. To avoid shortage during minimal repair, safety stock is built at the beginning and after every minimal repair in a preventive maintenance cycle. Towards the end of the production cycle a buffer stock is made for continuous supply during preventive maintenance action. Assuming this maintenance policy, a mathematical model is developed using probability distribution of maintenance duration and reliability of the system. Optimal values of safety stocks, buffer inventories and production cycle durations are determined. A numerical example is presented to illustrate the model. Sensitivity of the model is also analysed.

Keywords: inventory; preventive maintenance; minimal repair; reliability; JIT; just-in-time; safety stock; buffer inventory; operational research; maintenance strategy; maintenance policy; production cycle duration. (search for similar items in EconPapers)
Date: 2007
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.inderscience.com/link.php?id=14173 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ids:ijores:v:2:y:2007:i:4:p:440-451

Access Statistics for this article

More articles in International Journal of Operational Research from Inderscience Enterprises Ltd
Bibliographic data for series maintained by Sarah Parker ().