JURNAL TEKNIK INDUSTRI
Vol. 12 No. 3 (2022): VOLUME 12 NO 3 NOVEMBER 2022

Analysis of Forecasting and Control of Calcium Carbide and Flour Spar Inventories (Case Study: PT. XYZ Southeast Sulawesi)

Muhammad Nurdin (Unknown)
Fauzi widyawati (Unknown)



Article Info

Publish Date
21 Dec 2022

Abstract

Intisari— meramalkan dan mengendalikan pasokan bahan baku calcium carbide dan flour spar di PT XYZ Sulawesi Tenggara, memiliki tujuan khusus untuk memprediksi dan menentukan pasokan bahan baku yang optimal dan efisien sehingga dapat meminimalisir terjadinya kelebihan stok dan kurangnya stok. Berdasarkan hasil perhitungan, jika peramalan menggunakan metode single exponential smoothing dalam pengadaan bahan baku kalsium karbida akan diperoleh grafik penggunaan RAMP yang lebih banyak dan cenderung naik dari waktu ke waktu, sedangkan bahan baku tepung spar memperoleh grafik penggunaan yang lebih miring daripada penggunaan aktual dan variabel dan cenderung menurun. Jumlah persediaan calcium carbide safety sebesar 184.289 unit/hari dan tepung spar sebesar 13.462 unit/hari, batas atau titik pemesanan bahan baku yang dibutuhkan oleh perusahaan untuk kalsium karbida sebesar 192.318 unit/hari dan tepung spar sebesar 13.951 unit/hari, dan frekuensi pembelian bahan baku kalsium karbida dan tepung spar optimal adalah dua belas kali lipat dari pembelian bahan baku dalam satu periode. Abstract— Forecasting and controlling the supply of calcium carbide and flour spar raw materials at PT XYZ Southeast Sulawesi, has a special purpose to predict and determine the optimal and efficient supply of raw materials so as to minimize the occurrence of excess stock and lack of stock. Based on the results of calculations, if forecasting using the single exponential smoothing method in the procurement of calcium carbide raw materials will be obtained more RAMP usage graph and tend to rise over time, while the raw material flour spar obtained more sloping usage graph than actual use and variable and tend to decrease. The amount of calcium carbide safety inventory of 184.289 units/day and flour spar amounted to 13.462 units/day, the limit or point of ordering raw materials needed by the company for calcium carbide amounted to 192.318 units/day and flour spar amounted to 13.951 units/day, and the frequency purchase of calcium carbide raw materials and optimal spar flour is twelve times the purchase of raw materials in one period.

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Journal Info

Abbrev

tekin

Publisher

Subject

Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering

Description

Jurnal Teknik Industri (JTI) mainly focuses on industrial engineering scientific essays in the form of research results, surveys and literature review that are closely related to the Field of Industrial ...