Closed loop two-echelon repairable item systems

L. Spanjers, J.C.W. van Ommeren, W.H.M. Zijm*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterAcademicpeer-review

2 Citations (Scopus)


In this paper we consider closed loop two-echelon repairable item systems with repair facilities both at a number of local service centers (called bases) and at a central location (the depot). The goal of the system is to maintain a number of production facilities (one at each base) in optimal operational condition. Each production facility consists of a number of identical machines which may fail incidentally. Each repair facility may be considered to be a multi-server station, while any transport from the depot to the bases is modeled as an ample server. At all bases as well as at the depot, ready-for-use spare parts (machines) are kept in stock. Once a machine in the production cell of a certain base fails, it is replaced by a ready-for-use machine from that base’s stock, if available. The failed machine is either repaired at the base or repaired at the central repair facility. In the case of local repair, the machine is added to the local spare parts stock as a ready-for-use machine after repair. If a repair at the depot is needed, the base orders a machine from the central spare parts stock to replenish its local stock, while the failed machine is added to the central stock after repair. Orders are satisfied on a first-come-first-served basis while any requirement that cannot be satisfied immediately either at the bases or at the depot is backlogged. In case of a backlog at a certain base, that base’s production cell performs worse.
Original languageEnglish
Title of host publicationStochastic Modeling of Manufacturing Systems
Subtitle of host publicationAdvances in Design, Performance Evaluation, and Control Issues
EditorsGeorge Liberopoulos, Chrissoleon T. Papadopoulos, Barış Tan, J. MacGregor Smith, Stanley B. Gershwin
Place of PublicationBerlin, Heidelberg
Number of pages30
ISBN (Electronic)978-3-540-29057-5
ISBN (Print)978-3-540-26579-5, 978-3-642-06588-0
Publication statusPublished - 2006

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