The Determination of Optimal Buffer Size and Preventive Maintenance Period for Repairable Systems

• Main Authors: Jian-yi Young, 楊建毅
• Other Authors: Yeu-Shiang, Huang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/99702990893629352221

碩士 === 國立成功大學 === 工業與資訊管理學系碩博士班 === 95 === In the JIT philosophy, the manufacturer should seriousing determine the production lot to reduce costs in uncertain environment by considering the quality of the products, on time delivery, and customer satisfaction improvement etc. These aspects all become the essential issues that each enterprise has to face. Preventive maintenance actions need to be undertaken for the failure mitigation. During each interruption, a buffer is needed so that normal operations will not be interrupted. The optimal buffer level is determined by trading off the holding cost and the shortage cost. A system with two subsystem is considered where the production subsystem and buffers are included in order to provide to the assemble subsystem which has a set-up procedure. This study uses the economic manufacturing quantity (EMQ) model to determine the proper production lot size by minimizing the cost components which involve the production cost, the inventory holding cost, and the shortage cost if the stockout happenes. The model can assist the decision maker to determine the optimal buffer size and the preventive maintenance cycle. The numerical application suggests that the holding cost is the most important factor which influence the optimal policy.