| dc.description.abstract |
UMKM Eka Jaya Opak is a business unit engaged in the food industry with its main raw material cassava, products from UMKM Eka Jaya Opak have been sold and marketed to several cities on the islands of Sumatra and Java, the problem the company is currently facing is the ordering process raw materials and a lack of inventory which resulted in the company having to buy similar products at the nearest business in meeting consumer demand. The purpose of this study is to determine the planning and control of raw material supplies at UMKM Eka Jaya Opak and find out the exact ordering period. Demand forecasting is done using the Moving Averages and Exponential Smoothing methods. Forecasting with the Exponential Smoothing method gives the best results with MAD = 3073.1, MSE = 13448930 and MAPE = 8.90%. After that, the forecasting results are analyzed using the Material Requirement Planning (MRP) method with Lot For Lot (LFL), Economic Order Quantity (EOQ), and Period Order Quantity (POQ) techniques to find out optimal ordering of raw materials at minimum costs. On the results of Material Requirement Planning calculations, the best results were obtained, namely the Period Order Quantity technique with a total cost of Rp. 2,543,898,000 compared to the Lot For Lot technique with a total cost of Rp. 2,548,488,000, while the biggest cost is using the Economic Order Quantity technique with a total cost of Rp. 3,059,174,393, because the MRP method, the Period Order Quantity technique produces the best costs, it can be used for planning and controlling raw material supplies at UMKM Eka Jaya Opak.
Keywords: Material Requirement Planning, Lot For Lot, Economic Order Quantity, Period Order Quantity (POQ)
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