Pengendalian Persediaan Bahan Baku Tepung Terigu dalam Pembuatan Mie Mentah (Studi Kasus: UD Mie Ujang)

Abstract

Inventory plays an important role in company operations and requires systematic handling to ensure the continuity of company operations. Generally, every company has experienced problems in inventory such as shortages of raw materials or excess raw materials caused by spikes or decreases in demand. This research method in controlling raw material inventory uses the lot sizing method and forecasting method. Forecasting is done to find out the demand every week for the next 6 months, then MRP analysis is carried out using the lot sizing method. In determining the lot size, the results obtained from demand forecasting and have been converted in the form of wheat flour raw materials are then entered into the MRP table and calculations are carried out using the company's methods, namely EOQ, POQ and LFL to find out the method with the most economical cost results. The results showed that forecasting with winter exponential smoothing is very accurate with a MAPE result of 9%. From the results of the comparison of total inventory costs, the EOQ method obtained results of Rp 29,243,851, the POQ method obtained results of Rp 25,230,413, the LFL method obtained results of Rp 5,819,814 and for the company method obtained results of Rp 21,494,315. Based on this, it can be concluded that the method that results in the smallest cost is the LFL method.