Application of the EOQ Method to Optimize Raw Material Inventory at PT XYZ
Penerapan Metode EOQ untuk Mengoptimalkan Persediaan Bahan Baku di PT XYZ
DOI:
https://doi.org/10.21070/pels.v10i1.3137Keywords:
Inventory Control, Economic Order Quantity (EOQ), Safety Stock, Reorder Point (ROP), Raw MaterialsAbstract
General Background Manufacturing operations require precise material flow management to balance production continuity against the financial burdens of holding excess idle resources. Specific Background The HVAC and refrigeration sector depends heavily on raw materials like galvanized plates, where purchasing strictly based on estimates frequently leads to stockouts or severely inflated warehousing expenditures. Knowledge Gap While existing corporate policies address immediate procurement needs, they lack a calculated approach to determine exact economic thresholds, safety buffers, and dynamic reorder triggers to actively minimize total annual costs. Aims This research implements the Economic Order Quantity methodology to calculate the optimal order volume, purchasing frequency, safety stock, and reorder point for galvanized plates. Results Processing data detailing the annual consumption of 2,790,833 kilograms established an optimal purchasing volume of 1,050,645 units per transaction, executing 36 orders annually. The required safety stock was calculated at 3,141,831 kilograms to accommodate demand fluctuations. Furthermore, factoring in a 90-day lead time for material delivery, the reorder point was strictly set at 17,334,265 kilograms. Novelty This study quantitatively validates the transition from an arbitrary purchasing schedule to a fully integrated mathematical inventory framework within a high-volume HVAC manufacturing environment. Implications Deploying these calculated parameters drastically reduces holding expenditures, successfully slashing total inventory costs by Rp48,370,298,103 annually while ensuring uninterrupted production workflows.
Highlights:
-
Implementing mathematical inventory models replaces arbitrary purchasing, preventing severe stockouts and excessive holding expenditures.
-
The Economic Order Quantity calculation dictates an optimal purchasing volume of 1,050,645 units per transaction.
-
Establishing a 17,334,265-kilogram reorder point successfully accommodates a 90-day lead time and secures continuous production.
Keywords: Economic Order Quantity, Reorder Point, Safety Stock, Galvanized Plate, Holding Cost
Downloads
References
D. Mayasari and Supriyanto, “Analisis Pengendalian Persediaan Bahan Baku Menggunakan Metode EOQ (Economic Order Quantity) pada PT. Suryamas Lestari Prima,” Jurnal Bisnis Administrasi, vol. 10, no. 2, 2022.
M. M. Stock, D. I. PT, P. Usaha, and M. Harold, “Pengendalian Persediaan Bahan Baku Menggunakan,” vol. 3, no. 1, pp. 9–14, 2018.
N. Mei, “SENTRI: Jurnal Riset Ilmiah,” vol. 2, no. 5, pp. 1616–16.
P. PT and S. Lestari, “Analisis Pengendalian Persediaan Bahan Baku Menggunakan Metode EOQ (Economic Order Quantity),” vol. 10, 2022.
S. Meutia, N. A. Nst, and S. Akmal, “Analisis Perencanaan Persediaan pada Kilowatt Hour Meter (KWH Meter) dengan Metode Min-Max di PT. PL YT,” vol. 13, no. 2, pp. 84–91, 2024.
J. Akuntansi, “Analisis Efektivitas Metode EOQ dan JIT pada UMKM Rumah Makan Padang Ujuang Pulau,” vol. 5, no. 1, pp. 97–110, 2025.
A. Wahid and M. Munir, “Economic Order Quantity Istimewa pada Industri Krupuk ‘Istimewa’ Bangil,” vol. 02, pp. 1–8, 2020.
Y. Evitha and F. Ma, “Pengaruh Penerapan Metode Economic Order Quantity (EOQ) terhadap Pengendalian Persediaan Bahan Baku Produksi di PT. Omron Manufacturing of Indonesia,” vol. 3, no. 2, pp. 88–100, 2019.
P. M. Palupi, L. Korawijayanti, R. Handoyono, and P. N. Semarang, “Penerapan Metode Economic Order Quantity (EOQ) untuk Meningkatkan Efisiensi Biaya Persediaan Bahan Baku (Studi Kasus pada PT Nusamulti Centralestari),” vol. 1, pp. 426–435, 2018.
J. Efendi, K. Hidayat, and R. Faridz, “Analisis Pengendalian Persediaan Bahan Baku Kerupuk Mentah Potato dan Kentang Keriting Menggunakan Metode Economic Order Quantity (EOQ),” vol. 18, no. 2, pp. 125–134, 2019, doi: 10.20961/performa.18.2.35418.
M. L. Damayanti and T. Sukmono, “Analysis of Spare Part Inventory Control Using Economic Order Quantity (EOQ) and Continuous Review Methods [Analisis Pengendalian Persediaan Spare Part Menggunakan Metode Economic Order Quantity (EOQ) dan Continuous Review],” pp. 1–9.
W. Emar, Z. A. Al-Omari, and S. Alharbi, “Analysis of Inventory Management of Slow-Moving Spare Parts by Using ABC Techniques and EOQ Model—A Case Study,” vol. 23, no. 2, pp. 1159–1169, 2021, doi: 10.11591/ijeecs.v23.i2.pp1159-1169.
A. Pengendalian, P. Bahan, and B. Menggunakan, “Jurnal Ekobistek,” vol. 11, 2022, doi: 10.35134/ekobistek.v11i4.404.
T. N. Wiyatno, E. Indriastiningsih, and B. Nugrahadi, “Pengelolaan Persediaan Bahan Baku Menggunakan Metode Economic Order Quantity (EOQ) pada Industri Keramik,” vol. 5, no. 1, pp. 230–237, 2026.
A. Deftania, M. Meri, and R. Linda, “UNES Journal of Scientech Research,” vol. 7, no. 1, pp. 35–45, 2022.
D. K. Wardhani and T. Sukmono, “Raw Material Inventory Using the Economic Order Quantity (EOQ) Method [Persediaan Bahan Baku Menggunakan Metode Economic Order Quantity (EOQ)],” pp. 1–8.
S. Nur and R. Said, “Analisis Penerapan Metode Economic Order Quantity (EOQ) dalam Pengelolaan Persediaan,” vol. 2, no. 1, pp. 806–813, 2026.
F. A. Setiawan, F. A. Setiawan, M. Ekadjaja, and Y. Peniyanti, “Pengendalian Persediaan Barang Dagang Menggunakan Metode Economic Order Quantity. C. Biaya Kekurangan Bahan (Shortage Cost) Persediaan Barang Dagang yang Dipesan Terjadi Keterlambatan Pengiriman sehingga Ketersediaan Order Quantity (EOQ) Digunakan untuk Mengukur Biaya Pemesanan Persediaan Barang yang,” no. 2015, pp. 554–563, 2016.
A. Prasetyo, A. Mail, M. F. Hafid, and A. Fole, “JIEI: Journal of Industrial Engineering Innovation,” vol. 4, no. 1, pp. 8–15, 2026.
F. F. Anwar, D. Anggraeni, and Y. Budiawati, “Analysis of Raw Material Inventory Control in Melinjo Chips Production Using the Economic Order Quantity (EOQ),” vol. 16, no. 1, 2026.
Downloads
Published
How to Cite
Issue
Section
Categories
License
Copyright (c) 2026 Muhammad Arif Andriansyah, Inggit Marodiyah
This work is licensed under a Creative Commons Attribution 4.0 International License.
