A Heuristic for Triggering Emergency Orders in an Inventory System
Författare
Summary, in English
This paper considers a single-echelon inventory system with a warehouse facing compound Poisson customer demand. Normally the warehouse replenishes from an outside supplier according to a continuous review reorder point policy. However, it is also possible to use emergency orders. Such orders incur additional costs but have a much shorter lead time. We consider standard holding and backorder costs as well as ordering costs. A heuristic decision rule for triggering emergency orders is suggested. The decision rule minimizes the expected costs under the assumption that there is only a single possibility for an emergency replenishment, but the rule is used repeatedly as a heuristic. Given a certain reorder point policy for normal replenishments, our decision rule will always reduce the expected costs. A simulation study illustrates that the suggested technique performs well under different conditions.
Avdelning/ar
Publiceringsår
2007
Språk
Engelska
Sidor
880-891
Publikation/Tidskrift/Serie
European Journal of Operational Research
Volym
176
Issue
2
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Transport Systems and Logistics
Nyckelord
- stochastic
- emergency supply
- inventory control
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0377-2217