PERENCANAAN PERSEDIAAN BAHAN BAKU AMOXICILLIN DENGAN MENGGUNAKAN METODE MATERIAL REQUIREMENT PLANNING DI PT. XYZ

PRATIWI, FIRDA (2020) PERENCANAAN PERSEDIAAN BAHAN BAKU AMOXICILLIN DENGAN MENGGUNAKAN METODE MATERIAL REQUIREMENT PLANNING DI PT. XYZ. S1 thesis, Universitas Mercu Buana Jakarta.

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Abstract

PT. XYZ is a pharmaceutical company that produces Amoxicillin. In managing its inventory, PT XYZ has not done a good plan to determine the size of raw material orders. The existence of these problems, a study was conducted with the aim of determining Amoxicillin raw material inventory planning to eliminate the accumulation of raw materials at futur. The initial stage is forecasting using three methods, namely Linear Regression, Exponential Smoothing and Moving Average. Of the three forecasting methods, the Linear Regression method provides the smallest error accuracy. The chosen method of forecasting must be carried out in advance of verification test (Moving Range) to be used as a basis for planning future raw material requirements. Furthermore, calculations are carried out using the MRP method to determine the size of the order lot for each raw material and reduce the cost of saving. The lot size technique used includes Lot for Lot (LFL), Economic Order Quantity (EOQ), and Fixed Period Requirement (FPR). Of the three lot size techniques used, the LFL method provides the lowest total cost of inventory. Keywords: Amoxicillin, Exponential Smoothing, Regresi Linear, Moving Average, Material Requirement Planning, Lot Sizing. PT. XYZ merupakan salah satu perusahaan bergerak di bidang farmasi yang memproduksi Amoxicillin. Dalam mengelola persediaannya, PT XYZ belum melakukan perencanaan yang baik untuk menentukan ukuran pemesanan bahan baku. Adanya permasalahan tersebut, dilakukan penelitian dengan tujuan menentukan perencanaan persediaan bahan baku Amoxicillin untuk menghilangkan terjadinya penumpukan bahan baku di kemudian hari. Tahap awal dilakukan peramalan dengan menggunakan tiga metode, yaitu Regresi Linear, Exponential Smoothing serta Moving Average. Dari ketiga metode peramalan tersebut metode Regresi Linear memberikan akurasi kesalahan terkecil. Metode peramalan yang terpilih harus dilakukan uji verifikasi terlebih dahulu (Moving Range) untuk digunakan sebagai dasar pembuatan perencanaan kebutuhan bahan baku dimasa mendatang. Selanjutnya dilakukan perhitungan dengan metode MRP untuk menentukkan besarnya lot pemesanan pada masing-masing bahan baku dan menekan biaya simpan. Teknik lot size yang digunakan meliputi Lot for Lot (LFL), Economic Order Quantity (EOQ), dan Fixed Periode Requirement (FPR). Dari ketiga teknik lot size yang digunakan, metode LFL memberikan total biaya persediaan terendah. Kata Kunci: Amoxicillin, Exponential Smoothing, Regresi Linear, Moving Average, Material Requirement Planning, Lot Sizing.

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