Modeling lateral transshipments in multiechelon repairable-item inventory systems with finite repair channels

Modeling lateral transshipments in multiechelon repairable-item inventory systems with finite repair channels

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Article ID: iaor20041947
Country: United Kingdom
Volume: 30
Issue: 9
Start Page Number: 1401
End Page Number: 1417
Publication Date: Aug 2003
Journal: Computers and Operations Research
Authors: , , ,
Keywords: optimization
Abstract:

This article concerns the problem of determining the optimal spare inventory level for a multiechelon repairable-item inventory system, which has several bases and a central depot. When an item fails, the failed item is replaced immediately if a spare is available at the base. If there is no spare item available at the base, it is requested as a lateral transshipment to another base that has a spare in stock. If an item is not available from any of the bases, the item is backordered until a spare becomes available. We propose a model to describe the behavior of the system and develop an algorithm to find the spare inventory level at each base, which minimizes the total expected cost of the system. The algorithm is illustrated using examples of various sizes.

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