Safety Stocks in Capacity-constrained Production Systems

We present a simple calculation scheme for the determination of safety stocks for a capacitated single-stage multi-product production-inventory system. Demand is assumed to be stochastic and a given fill rate has to be fulfilled. The lotsizing and sequencing decisions are made on a rolling horizon basis considering sequence-dependent setup cost and time. Results from a simulation experiment show the reliability of the approach under varying parameter settings.

[1]  Jc Johan Wortmann,et al.  MRP and inventories , 1985 .

[2]  J. E. Tyworth MODELING TRANSPORTATION-INVENTORY TRADE-OFFS IN A STOCHASTIC SETTING. , 1992 .

[3]  W. H. M. Zijm,et al.  Towards intelligent manufacturing planning and control systems , 2000, OR Spectr..

[4]  Neng-Pai Lin,et al.  A Model for Master Production Scheduling in Uncertain Environments , 1992 .

[5]  William L. Berry,et al.  MEASURING MASTER PRODUCTION SCHEDULE STABILITY UNDER ROLLING PLANNING HORIZONS , 1988 .

[6]  J. Muckstadt,et al.  Protective stocks in multi-stage production systems , 1984 .

[7]  Candace Arai Yano,et al.  Interaction between frequency of rescheduling and the role of safety stock in material requirements planning systems , 1987 .

[8]  Hartmut Stadtler,et al.  Supply Chain Management and Advanced Planning , 2000 .

[9]  David F. Pyke,et al.  Inventory management and production planning and scheduling , 1998 .

[10]  Alf Kimms,et al.  Lot sizing and scheduling -- Survey and extensions , 1997 .

[11]  Horst Tempelmeier Inventory service-levels in the customer supply chain , 2000, OR Spectr..

[12]  Dean H. Kropp,et al.  Alternative approaches to schedule instability: a comparative analysis , 1987 .

[13]  L. V. Wassenhove,et al.  COST INCREASES DUE TO DEMAND UNCERTAINTY IN MRP LOT SIZING , 1983 .

[14]  Urban Wemmerlöv,et al.  Lot-sizing under uncertainty in a rolling schedule environment , 1984 .

[15]  Kum Khiong Yang,et al.  Replanning the Master Production Schedule for a Capacity-Constrained Job Shop , 1999 .

[16]  de Ag Ton Kok Hierarchical production planning for consumer goods , 1990 .

[17]  Herbert Meyr Simultane Losgrößen- und Reihenfolgeplanung für kontinuierliche Produktionslinien , 1999 .

[18]  Herbert Meyr,et al.  Simultaneous lotsizing and scheduling by combining local search with dual reoptimization , 2000, Eur. J. Oper. Res..

[19]  G. D. Eppen,et al.  Determining Safety Stock in the Presence of Stochastic Lead Time and Demand , 1988 .