Peramalan Permintaan dan Pengendalian Persediaan Bahan Baku Pupuk ZA Menggunakan Metode Time Seriesdan EOQ(studi Kasus:PT Petrokimia Gresik )

Pratama, Muhammad Rizky Yoga (2025) Peramalan Permintaan dan Pengendalian Persediaan Bahan Baku Pupuk ZA Menggunakan Metode Time Seriesdan EOQ(studi Kasus:PT Petrokimia Gresik ). Jurnal Teknologi dan Manajemen Industri Terapan(JTMIT), 4 (2). pp. 282-292. ISSN 2829-0038

	Text Halaman persetujuan publikasi yoga.pdf Download (648kB)
	Text (Artikel Publikasi) 156 Restricted to Repository staff only until 23 June 2030. Download (4kB)

Official URL: https://jurnal-tmit.com/index.php/home/article/vie...

Abstract

T PetrokimiaGresik is Indonesia's largest fertilizer producer,committed to sustainably meeting the agricultural sector's needs. One of its main products is ZA fertilizer, whose production process heavily relies on the availability of raw materials. Inaccurate demand forecasting and poor inventory control can lead to an excess or shortage of raw materials, affecting production efficiency. This study aims to forecast demand and control the inventory of ZA fertilizer raw materials to support smooth company operations. Double Exponential Smoothing (DES) and Winters’ Multiplicative (Triple Exponential Smoothing) are the forecasting methods used. The results show that the Winters’ method is more accurate, with anMAPE of 2% and a MAD of 1,286. These forecasts area basis for applying the Economic Order Quantity (EOQ) method in inventory control. The application of EOQ significantly reduces the total inventory cost compared to the company’s current policy, achieving up to 10% cost savings. The integration of forecasting and EOQ methods effectively minimizes inventory costs and ensuressmooth production operations

Item Type:	Article
Uncontrolled Keywords:	eramalan, DoubleExponential Smoothing , Triple Exponential Smoothing, EOQ, Persediaan, Pupuk ZA
Subjects:	Engineering > Industrial Engineering Engineering
Divisions:	Faculty of Engineering > Industrial Engineering Study Program
Depositing User:	Muhammad Rizky Yoga Pratama
Date Deposited:	02 Jul 2025 03:13
Last Modified:	02 Jul 2025 03:13
URI:	http://eprints.umg.ac.id/id/eprint/13943

Actions (login required)

View Item