On the equivalence of jit and mrp as technologies for reducing wastes in manufacturing

John Miltenburg

Naval Research Logistics (NRL), 1993, vol. 40, issue 7, 905-924

Abstract: JIT (just‐in‐time) is widely regarded as an excellent tool for reducing costs and cycle times, and for improving quality in manufacturing operations. JIT follows a multistep procedure. First, it identifies and prioritizes wastes or non‐value‐adding activities. Second, it forces these wastes to be removed. MRP (materials requirements planning) can identify the same wastes and prioritize them in the same way that JIT does, by using data from the MRP database and master production schedule, and a waste identification model. In this article, a model is developed which describes the process by which the classic JIT system identifies and prioritizes waste. An equivalent MRP waste identification model is then developed for the production environment of the classic JIT system. (The classic JIT system was developed to produce many products having low to medium volumes.) The results developed here can be extended to other production environments where adaptations of the classic JIT system are used. An example, taken from an actual application, is presented to illustrate the models and the equivalence of JIT and MRP as systems for identifying and prioritizing wastes in manufacturing. © 1993 John Wiley & Sons, Inc.

Date: 1993
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https://doi.org/10.1002/1520-6750(199312)40:73.0.CO;2-L

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Persistent link: https://EconPapers.repec.org/RePEc:wly:navres:v:40:y:1993:i:7:p:905-924

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