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Jurnal Teknik Industri Terintegrasi (JUTIN)
Published by Universitas Pahlawan Tuanku Tambusai
ISSN : 26208962     EISSN : 26208962     DOI : 10.31004jutin
Core Subject : Science, Engineering,
Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering
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 manufaktur, kegagalan dan rekayasa material, perawatan berbasis keandalan, keselamatan kerja, perancangan sistem kerja dan ergonomi, pengendalian dan penjaminan mutu, tata letak fasilitas, penelitian operasional, kewirausahaan dan pengembangan bisnis
Arjuna Subject : -
Articles 1,162 Documents
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Analisis Sistem Inventory Suku Cadang Truk (Studi Kasus: Bengkel DLH Kota Surabaya) Nugroho, Adji Syafuly; Murnawan, Hery
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52466

Abstract

This research examines the truck spare parts inventory system at the Surabaya City Environmental Service (DLH) with the aim of increasing the operational availability of the waste transport fleet. The approach used includes ABC analysis to group spare parts based on annual consumption value, as well as MTBF (Mean Time Between Failure) and MTTR (Mean Time To Repair) calculations to assess the level of fleet reliability. Research findings show that around 73% of annual consumption value is concentrated in Class A parts—such as engine oil, inner tubes, and batteries—which are included in the fast-moving parts category. Apart from that, there are significant differences in the level of fleet reliability, with the highest MTBF value reaching 1440 hours and the lowest 270 hours. Based on these results, the study recommends implementing inventory control strategies tailored to the spare part class to reduce downtime and ensure smooth transportation operations.
Peningkatan Pengendalian Kualitas Sebagai Upaya Meminimalkan Produk Cacat pada Kayu Ekspor Febianti, Eka Ayu Nur; Herlina, Herlina
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52470

Abstract

The wood export industry requires strict quality standards, as even minor defects can reduce product value. PT XYZ still records defect levels above 10% tolerance, indicating that its quality control system needs improvement. This study aims to identify the root causes of defects and propose corrective actions to reduce their occurrence. Statistical Process Control (SPC) is used to determine dominant defect types, while Failure Mode and Effect Analysis (FMEA) prioritizes risks based on RPN values. The Plan Do Check Act (PDCA) cycle supported by 5W+1H serves as framework for systematic improvements. Results show that cracks, voids, improper thickness, and warping are mainly caused by unstable kiln conditions, worn moulder blades, inconsistent press pressure,and uneven wood moisture content. Implementation of PDCA actions effectively reduced finger laminating defects from 15,20-15,29% to 10,05-10,09% and decking defects from 14,62-16,66% to 10,03-10,06%. integration of SPC, FMEA, and PDCA provenly strengthens quality performance
Perbandingan Produktivitas Blasting Menggunakan Copper Slag Baru, 1 & 2 Pada Permukaan Kapal dengan Preparation Spot Sweep Menggunakan Metode ANOVA Kerans, Sisilia S Lelo; Putri, Erni Puspanantasari
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52471

Abstract

Dry abrasive blasting is a critical process in the shipyard industry for removing rust and contaminants from steel surfaces prior to coating. Copper slag, a by-product of copper smelting, is commonly used as an abrasive medium due to its hardness. This study compares blasting productivity using new copper slag, first-cycle recycled copper slag, and second-cycle recycled copper slag. The evaluated parameters include processing time, cleaned surface area, and surface roughness. A quantitative method employing one-way Analysis of Variance (ANOVA) was applied to determine significant differences among the treatments. The results show that new copper slag produces the highest surface roughness but requires longer processing time. First-cycle recycled copper slag provides the most optimal balance between time efficiency and surface quality, while second-cycle recycled copper slag achieves the fastest processing time with reduced surface roughness. ANOVA results indicate significant differences among the three treatments. The findings suggest that copper slag can be effectively reused for one recycling cycle without compromising the Sa 2.5 standard according to ISO 8501-1.
Analisis Perencanaan Pengadaan Bahan Baku pada Produksi List Gypsum dengan Pendekatan Lot Sizing Ardiansyah, Fredy Pri; Khoiroh, Siti Muhimatul
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52487

Abstract

This study discusses the analysis of raw material procurement planning in the production process of gypsum molding at UD Jaya Gypsum using a lot sizing technique approach. The main problem faced by the company is the inaccuracy in the quantity and timing of raw material orders, which affects production continuity and cost efficiency. This study employs the Economic Order Quantity (EOQ), Lot for Lot (LFL), Period Order Quantity (POQ), Least Unit Cost (LUC), and Least Total Cost (LTC) methods to determine the most optimal order size. Raw material requirement data are obtained from historical demand and production schedules. The results of the analysis show differences in total costs among the methods and provide recommendations for the most efficient lot size ordering for the company. By applying an appropriate lot sizing method, the company can minimize inventory costs while maintaining production continuity.
Penentuan Jumlah Pengambilan Barang Guna Meningkatkan Service Level pada PT. XY Wati, Putu Eka Dewi Karynia; Amalludin, Luqman
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52496

Abstract

This study examines inventory control for two major cement products, Semen Gresik and Semen Merdeka, at PT XY Sidoarjo Branch, aiming to minimize stockout risk and financial losses arising from lost sales and delivery penalties. Operational data from June to August 2025 were analyzed to identify demand patterns, supply fluctuations, and the need for accurate determination of safety stock and reorder point. The findings indicate several stockout events that contributed to significant financial losses, amounting to approximately Rp509,600,000 for Semen Gresik. Therefore, a more precise inventory control approach is required, particularly through the Continuous Review method, which considers daily demand variability and lead time. The proposed improvements include implementing a more adaptive safety stock level and adjusting the reorder point to reduce stockout frequency and enhance distribution reliability.
Efisiensi Pengiriman Produk ke Warehouse melalui Identifikasi Faktor Keterlambatan Produksi pada PT. Miss Clean Indonesia Saputra, Danang Adi; Mundari, Siti
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52511

Abstract

This study analyzes the factors causing delays in product delivery from PT. Miss Clean Indonesia to four main warehouses, which resulted in stock shortages and reduced customer satisfaction. Delivery delays reached 35% in June 2025. The research aims to identify the root causes of these delays and propose improvement strategies using the Fishbone Diagram and Failure Mode and Effect Analysis (FMEA). The Fishbone analysis shows that the primary cause is the misalignment between production scheduling and delivery schedules, while additional issues include limited daily production capacity, machine downtime, and weak coordination between divisions. The FMEA results confirm this finding, with the highest Risk Priority Number (RPN) of 315 assigned to production scheduling failures. To address these problems, a Master Production Schedule (MPS) was developed to synchronize production with warehouse demand. The implementation of the schedule improved delivery accuracy and enhanced overall operational efficiency.
Model Optimasi Distribusi Minimum Biaya Berbasis Transportation Problem dan Shortest Path Jumali, Muhamad Abdul; Rizki, Gusti; Ulum, Moch Bahrul; Prianto, Yoga Chandra
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52517

Abstract

This study develops a minimum-cost distribution optimization model by integrating the Transportation Problem for shipment allocation and the Shortest Path method for minimum-distance routing. Distance, cost per kilometer, demand, and vehicle capacity are quantitatively analyzed using mathematical modeling and then compared with the company’s manual distribution pattern. The results show that total travel distance decreases from 110 km to 80 km and distribution cost drops from IDR 880,000 to IDR 640,000 per trip. The estimated delivery lead time (average speed 40 km/h) is reduced from 2.75 hours to 2.00 hours. A cost sensitivity test (IDR 7,000–10,000 per km) indicates a consistent efficiency of 27.27%, suggesting model robustness to cost fluctuations. This model can support data-driven distribution decisions to improve cost efficiency and operational performance.
Relayout Tata Letak Ruang Produksi untuk Meminimalkan Biaya Material Handling pada PT Pireki Asia Wardani, Ni Kadek Ayu; Herlina, Herlina
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52518

Abstract

This study was conducted at PT Pireki Asia, a manufacturing company producing partition doors, which has experienced inefficiencies in its production layout due to increasing demand and irregular material flow. The purpose of this research is to redesign the production facility layout to minimize material travel distance and time, and to reduce material handling costs. This original research was carried out through direct observation, measurement of interdepartmental distances, and analysis of activity relationships using the Systematic Layout Planning (SLP) method, including the development of a From-To Chart, Activity Relationship Chart, and space requirement evaluation. The findings show that the proposed layout significantly reduces material movement distance, improves process flow, and lowers material handling costs compared to the existing layout. The study recommends implementing the redesigned layout to enhance operational efficiency and support higher production capacity.
Pengaruh Variasi Nilai Konstruksi Terhadap Pengendalian Proyek Jumali, Muhamad Abdul; Maubila, Alorinda Zantia; Pradipta, Arjuna Raffi
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52529

Abstract

This study analyzes the influence of constructin value variation on project control effectiveness in Indonesia using a quantity explanatory research design. The data were obtained from the statistics Indonesia (BPS) 2023 report, specifically the dataset on constructin categories. Descriptive analysis reveals highly extreme value variations with several large-scale outliers. Pearson correlation analysis indicates very strong relationship (≥ 0,97) among value categories, suggesting simulatneous escalatin in multi component projects. The findings imply that higher construction values requier more complex control mechanism, including Earned Value Management (EVM), structured risk mitigation, and strist change-order management. This study recommends adopting value-based project control classifications to enhance the effectiveness of cost anda schedule oversight and to support optimal construction project performance.
Perancangan Sistem Informasi Pengadaan Bahan Baku Menggunakan Model Waterfall untuk Meningkatkan Efisiensi Sistem Purchasing (Studi Kasus: UD La Riz Mebel) Khoirunniam, Alan; Mundari, Siti
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 1 (2026): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i1.52532

Abstract

The manual raw material procurement system at UD La-Riz Mebel has caused various operational inefficiencies, including 23 stockout incidents per semester, overstock losses of Rp 20,450,000, order delays reaching 41%, and a recording error rate of 19%. This study aims to design a raw material procurement information system using the Waterfall model to enhance purchasing efficiency. The research methods include field observations, in-depth interviews, documentation studies, and system requirements analysis. System design follows the Waterfall phases: requirements analysis, system design using DFD, ERD, and database modeling, prototype implementation, and black-box testing. The results show that the proposed system reduces purchasing process time from 2.5 days to 0.5 days, decreases recording errors to 2%, reduces stockouts by 83%, and lowers overstock costs by 79%. Functional testing achieved a 100% success rate, while User Acceptance Testing scored 4.73 out of 5. The system significantly improves data accuracy, interdepartmental coordination, and overall operational efficiency.

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