| Summary: | 碩士 === 國立交通大學 === 管理學院工業工程與管理學程 === 99 === In telecommunications industry, the demand uncertain is the interfering factor on replenishment system of MRP that is a big headache issue. The errors of forecast bothering the inventory manager needs to prepare more inventory meeting customer services, but also concern to erode the benefit of company. That means the replenishment system of inventory management is the critical path keeps the enterprises competition. In case, Company M performs some compromises modifying MRP system that including more efficiency forecast, flatten the BOM, safety stock setting and manual work around proliferation to reduce the operational risk, but also as expected to get some improvements. But compared with the performances of the others competitors that there is still gap need to overcome. Therefore, it needs the managers to find the constraint on MRP system, and take actions to break it to enhance the competitiveness of enterprises. This study based on the idle inventory report of Company M to identify some material parts, through methodology of TOC (Demand-pull & Buffer management), de-couple the BOMs to individually manage their inventory. After simulating some scenario of product life cycle, confirm the inventory performances are better than the MRP system. In addition, this study does not deny using the forecast way to plan future inventory. After all, through forecasting the demand is important. That makes the managers to understand the demand trend, but the information obtained by the prediction method can be combined with TOC. TOC can help the company never falls into the conflicts between the customer services and the company profits.
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