Jurnal Teknik Industri Terintegrasi (JUTIN)
Vol. 9 No. 3 (2026): July

Analisis Pengendalian Persediaan Bahan Baku Kedelai untuk Meminimalkan Biaya Persediaan

Rizky Akbar Saputra (Universitas 17 Agustus 1945 Surabaya)
Herlina Herlina (Universitas 17 Agustus 1945 Surabaya)



Article Info

Publish Date
04 Jul 2026

Abstract

Mr. Teguh’s Tofu Factory, established in 2003, is an example of a home-based industry that employs a make-to-stock production system. The reactive, non-scientifically based system for controlling raw material inventory resulted in stockouts and overstock during the January–December 2025 period. This study aims to determine the safety stock, reorder point, and optimal order quantity using the Silver Meal (SM) method. Demand forecasting was performed using the Weighted Moving Average. The results show that the Silver Meal method yields a safety stock of 663 kg and a reorder point of 4,836 kg. The application of this method resulted in a 75% reduction in ordering costs (from Rp1,027,200 to Rp256,800) and a 100% reduction in storage costs (from Rp270,675 to Rp0), or a non-material operational cost savings of 80.21%, thereby reducing the Total Inventory Cost (TIC) from Rp1,862,297,875 to Rp1,853,286,800. This study demonstrates that the integration of the WMA and Silver Meal forecasting methods can be an effective solution for optimizing soybean raw material inventory policies in the home-based tofu industry

Copyrights © 2026






Journal Info

Abbrev

jutin

Publisher

Subject

Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

Description

Jurnal Teknik Industri Terintegrasi merupakan jurnal yang dikelola oleh Program Studi Teknik Industri Fakultas Sains dan Teknologi Universitas Pahlawan Tuanku Tambusai yang menjebatani para peneliti untuk mempublikasikan hasil penelitian di bidang ilmu teknik dan teknik industri mencakup proses ...