Characterizing the Output Process of a CONWIP Line with Deterministic Processing and Random Outages

Izak Duenyas, Wallace J. Hopp and Mark L. Spearman
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Izak Duenyas: Department of Industrial and Operations Engineering, The University of Michigan, Ann Arbor, Michigan 48109
Wallace J. Hopp: Department of Industrial Engineering and Management Sciences, Northwestern University, Evanston, Illinois 60208
Mark L. Spearman: Department of Industrial Engineering and Management Sciences, Northwestern University, Evanston, Illinois 60208

Management Science, 1993, vol. 39, issue 8, 975-988

Abstract: We model a CONWIP (CONstant Work-in-Process) production line with deterministic processing times and exponential failure and repair times as a closed queueing network. We derive an approximation for the mean and variance of the output during a specified interval and give computable conditions under which this approximation performs well. We show through empirical tests that the approximation is robust and illustrate its usefulness as the basis for a procedure for selecting an economic production quota and a card count for a CONWIP line.

Keywords: CONWIP; closed queueing networks; output processes; approximations (search for similar items in EconPapers)
Date: 1993
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Persistent link: https://EconPapers.repec.org/RePEc:inm:ormnsc:v:39:y:1993:i:8:p:975-988

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