Design of a Raw Material Inventory Control System for the Tempe Industry Using the Economic Order Quantity (EOQ) and Quantity Discount Approach
DOI:
https://doi.org/10.35194/jmtsi.v10i2.5839Keywords:
Economic order quantity, quantity discounts, safety stock, reorder point, Inventory controlAbstract
Planning of raw material inventory control is essential for reducing operational waste. This study aims to design a soybean raw material inventory control system at Tempe Galang Small Enterprise to minimize the potential for overstocking and stockouts. The approach used is the Economic Order Quantity (EOQ) method, taking into account quantity discounts, safety stock determination, and reorder point calculations. The research data was obtained through interviews with the SME owner and direct observation, covering demand history, order costs, storage costs, and delivery waiting times. The results show that the optimal order quantity is 69 kg per order, thereby reducing the order frequency from 141 times to 80 times per period. The safety stock level is set at 24 kg/day with a reorder point of 40 kg. The application of this method resulted in inventory cost efficiency of IDR 5,109,580 or about 8% of the previous total cost, mainly through a reduction in order frequency and the utilization of quantity discounts. In addition, the design of a semi-manual control system based on Microsoft Excel allows business actors to plan inventory independently in a more effective and efficient manner.
References
[1] R. D. Kristianti, M. R. A. C. Chusen, and M. Yasin, “Analisis Pola Spasial Industri Kecil Menengah (Ikm) Dan Industri Rumah Tangga (Irt) Di Kabupaten Dan Kota,” POPULER: Jurnal Penelitian Mahasiswa, vol. 3, no. 4, pp. 55–66, 2023, doi: 10.61722/jiem.v3i4.4380.
[2] Badan Pusat Statistik, “Profil Industri Mikro dan Kecil 2023,” 2023.
[3] O. H. Kristiadi and A. T. Lunggani, “Tempe Kacang sebagai Pangan Fermentasi Unggulan Khas Indonesia: Literature Review,” Jurnal Andaliman-Jurnal Gizi Pangan, Klinik Dan Masyarakat, vol. 2, no. 2, pp. 48–56, 2022, doi: https://doi.org/10.24114/jgpkm.v2i2.40334.
[4] Badan Pusat Statistik, “Rata-Rata Konsumsi per Kapita Seminggu Beberapa Macam Bahan Makanan Penting,” Jakarta, 2024.
[5] I. wayan R. Aryanta, “Manfaat Tempe Untuk Kesehatan,” Widya Kesehatan, vol. 2, no. 1, pp. 44–50, 2020, doi: 10.32795/widyakesehatan.v2i1.609.
[6] H. Cahyadi, I. Ruwana, and S. A. Sari, “Analisis Persediaan Kedelai Sebagai Bahan Baku Tempe Dengan Metode Economic Order Quantity Pada Umkm X,” Jurnal Valtech, vol. 7, no. 1, 2024, doi: https://ejournal.itn.ac.id/index.php/valtech/article/view/9285.
[7] C. K. Dewi, C. H. Rimbun, N. S. Adhini, D. A. Sipahutar, and T. Anwar, “Optimasi Manajemen Rantai Pasok Tempe Dengan Pendekatan Eoq Di Desa Pliken Banyumas,” CENTIVE: Conference on Electrical Engineering, Informatics, Industrial Technology, and Creative Media 2024, vol. 4, no. 1, pp. 1124–1132, 2024.
[8] A. E. L. Nyoko, R. P. C. Fanggidae, and Y. Y. Marawali, “The Forecasting of Raw Material Inventory in Support of The Continuity Production Process,” Journal of Management Small and Medium Enterprises (SME’s), vol. 16, no. 3, pp. 1–11, 2023, doi: https://doi.org/10.35508/jom.v16i3.12633.
[9] A. Ramadhani, Gazali, and S. Basuki, “Pengaruh Perencanan Produksi dan Persediaan Bahan Baku terhadap Hasil Produksi pada PT Victory Offset Prima,” JUBISMA: Jurnal Bisnis Manajemen dan Akuntansi, vol. 6, no. 1, 2024, doi: https://doi.org/10.58217/jubisma.v6i1.142.
[10] Y. A. Syamsiah, D. S. Donoriyanto, and I. Nugraha, “Pengendalian Risiko dan Optimalisasi Persediaan Bahan Baku pada Usaha Kecil: Pendekatan Metode FMEA dan EOQ Yuliatin Ali Syamsiah Nasional ‘Veteran’ Jawa Timur Dwi Sukma Donoriyanto Program Studi Teknik Industri, Fakultas Teknik dan Sain , Universitas,” Jurnal Riset Rumpun Ilmu Teknik (JURRITEK), vol. 2, no. 2, 2023, doi: https://doi.org/10.55606/jurritek.v2i2.2566.
[11] F. R. Mulya and P. S. Sutopo, “Meningkatkan Kualitas Persediaan Duplek dengan Metode Economic Order Quantity (EOQ) di PT. ABCD,” Jurnal Sosial dan Teknologi (SOSTECH), vol. 4, no. 9, pp. 776–794, 2024, doi: https://doi.org/10.59188/jurnalsostech.v4i9.2802.
[12] M. Siraj, A. Naseem, M. Maryam, and J. Asad, “Optimizing Inventory Management: A Comprehensive Analysis of Economic Order Quantity, Lot Size, Safety Stock, and Reordering Quantity Strategies,” Journal of Business Administration and Management Sciences (JOBAMS), vol. 6, no. 1, pp. 8–16, Jun. 2024, doi: 10.58921/jobams.6.1.123.
[13] R. K. Wassan et al., “The Current Status of Lean Manufacturing in Small, Medium and Large Scale Manufacturing Companies of Karachi, Pakistan,” Journal of Applied Engineering Science, vol. 20, no. 3, pp. 707–715, 2022, doi: 10.5937/jaes0-35761.
[14] J. EHJ. Foeh, “Application of Economic Order Quantity Method in Controlling Raw Material Inventory,” International Journal of Social Science and Human Research, vol. 04, no. 08, pp. 2181–2186, 2021, doi: 10.47191/ijsshr/v4-i8-32.
[15] P. Kumar and S. Dubey, “International Journal of Advance Research and Innovation A Comprehensive Critical Analysis of the Economic Order Quantity Model in Inventory Management International Journal of Advance Research and Innovation,” vol. 12, no. 1, pp. 7–10, 2024, doi: https://doi.org/10.69996/ijari.2024002.
[16] A. E. Mohamed, “Operations Management : Recent Advances and New Perspectives,” in Operations Management - Recent Advances and New Perspectives, 1st ed., vol. 1, T. Bányai, Ed., Intechopen, 2024, ch. 3, pp. 1–14.
[17] J. Heizer and B. Render, Operations Management: Sustainability and Supply Chain Management, 14th ed. New Jersey: Pearson Education, 2023. [Online]. Available: https://e-journals2.unmul.ac.id/index.php/jatri/article/view/2304
[18] K. Hadidjija, D. Fitriana, and L. Lazuardi, “Analysis of Soybean Raw Material Inventory Control Using the Economic Order Quantity (EOQ) Method at the Terang Tofu Factory,” Journal of Evrimata: Engineering and Physics, vol. 03, no. 01, pp. 01–06, 2025, Accessed: Oct. 14, 2026. [Online]. Available: https://www.evrimata.id/index.php/EEP/article/view/68/52
[19] I. Anwar, Inventory Optimization Techniques, 1st ed., vol. 1. Bogor, Indonesia: PT Hibrkraft Kreasi Indonesia, 2025.
[20] D. Zamani Dadaneh, S. Moradi, and B. Alizadeh, “Simultaneous planning of purchase orders, production, and inventory management under demand uncertainty,” Int. J. Prod. Econ., vol. 265, Nov. 2023, doi: 10.1016/j.ijpe.2023.109012.
[21] E. Rusnita, “Analisis Biaya Pemesanan Material dengan Metode Economic Order Quantity (EOQ) di PT. XYZ,” Prosiding Seminar Nasional Teknik Industri, vol. 1, no. 1, pp. 517–526, 2023.
[22] M. Alnahhal, B. L. Aylak, M. Al Hazza, and A. Sakhrieh, “Economic Order Quantity: A State-of-the-Art in the Era of Uncertain Supply Chains,” Sustainability (Switzerland), vol. 16, no. 14, pp. 1–19, 2024, doi: 10.3390/su16145965.
[23] S. Chopra and P. M. D. V. Kalra, Supply chain management, strategy, planning, and operations sixth edition., vol. 3, no. 2. 2016.
[24] N. N. Farhana, W. F. Yahya, and K. Mubarok, “Analisis Safety stock dan Reorder point Persediaan Produk Wheel-Grinding, 4" di PT XYZ,” JATRI-Jurnal Teknik Industri, vol. 8, no. 3, pp. 80–88, 2025, doi: https://doi.org/10.30872/jatri.v3i1.2304.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2026 Jurnal Media Teknik dan Sistem Industri
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
