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All Journal JPM17: Jurnal Pengabdian Masyarakat JIEMS (Journal of Industrial Engineering and Management Systems) Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Ekonomi Jurnal Taguchi : Jurnal Ilmiah Teknik dan Manajemen Industri Jurnal Spesialis Teknik Sipil (JSpTS) JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI (JISI) Asian Journal of Social and Humanities
Sajiyo Sajiyo
Universitas 17 Agustus 1945 Surabaya
Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Social Sciences Transportation

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Analisis Perbaikan Sistem Distribusi untuk Meningkatkan Ketepatan Waktu dan Meminimalkan Biaya Pengiriman (Studi Kasus: PT. XYZ) Daniel Nurhakim Agus Setiawan; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.58953

Abstract

Distribution is an important part of the logistics process, especially in the efficient delivery of goods from producers to consumers. This study aims to determine the optional distribution route of goods at PT.XYZ in order to minimize travel distance, as well as determine the best method in determining the route. The method used is the Vehicle Routing Problem (VRP) approach with three calculation techniques, namely saving matrix, nearest insert, nearest neighbor with validation and verification processes using LINGO 18.0 software. The result of the study show that the saving matrix method gets 7 routes and fleet allocations according to their maximum capacity, calculations from the three nearest insert methods get the shortest distance of 5098.1 km and savings in total distribution operational costs of Rp. 12,680,370 or 27.22% of the existing condition. This study is expected to be a recommendation for companies in distributing products.
Perancangan Sistem Kerja Melalui Pendekatan Ergonomi Dengan Metode Cardiovascular Load (CVL) Danang Ahmad Prayoga; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.58957

Abstract

CV. ABP Mandiri is a manufacturing company that produces motorcycle spare parts, particularly swingarm components. The company’s main problem is the absence of standardized working time and inefficient work methods, causing production targets to not be achieved optimally. This study aims to analyze the physical workload level of operators using the Cardiovascular Load (CVL) method in the production process at CV. ABP Mandiri. The CVL method is used to determine the level of work fatigue based on measurements of resting heart rate and working heart rate of operators at each production workstation. Research data were obtained through field observations and direct heart rate measurements during work activities. Based on the results of the study using the CVL method, the operators’ workload level was categorized as low to moderate. The welding process had the highest workload with a CVL value of 53%. Therefore, improvements in the work system, rest time arrangements, and the application of ergonomics are needed to reduce work fatigue and improve operator productivity.
Analisis Pengendalian Persediaan Bahan Baku Tangki BBM dengan Metode EOQ dan ROP (Studi Kasus: PT. Meco Inoxprima) Muhammad Burhan Jamaluddin; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.58981

Abstract

This study aims to analyze the control of raw material inventory in the fuel tank manufacturing process at PT Meco Inoxprima to improve production flow and cost efficiency. The company’s main problem is delays in the procurement of imported raw materials, which disrupt production schedules and increase operating costs. The methods used are EOQ, Safety Stock, and ROP, utilizing historical data from 2025–2026. The results indicate optimal order quantities of 435 sheets (aluminum alloy), 334 sheets (stainless steel), and 281 sheets (mild steel). Safety stock is set at 102, 43, and 36 sheets for each material, respectively. The ROP values are 480, 197, and 92 sheets. Total inventory costs decrease from Rp. 136,250,000 to Rp. 107,890,000 per year, resulting in savings of Rp. 28,360,000 (20.82%). The application of the EOQ, Safety Stock, and ROP methods has proven effective in improving operational cost efficiency and ensuring smooth production.
Analisis Perencanaan Kebutuhan Bahan Baku untuk Meningkatkan Pencapaian Target Produksi pada UD. Kasak Paper Bag Amanda Seftia Andini; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.59004

Abstract

UD. Kasak Paper Bag is a manufacturing company that produces paper bags and experiences problems in controlling and supplying raw materials, especially medium paper, which causes delays in the production process. The raw material procurement system is still based on estimates, resulting in shortages and excess inventory. The purpose of this study is to determine efficient raw material planning through the application of the Material Requirement Planning (MRP) method. The methods used include demand forecasting with the Moving Average and Weighted Moving Average methods with the application of the Lot For Lot (LFL) and Period Order Quantity (POQ) lot sizing techniques. The results show that the Moving Average method has the best level of accuracy with a MAD value of 503.7. MRP calculations show that the LFL method produces the minimum total inventory cost of Rp16,530,000 compared to the POQ method. The application of MRP can increase the effectiveness of raw material inventory management and maintain the smoothness of the production process.
Analisis Perencanaan Kebutuhan Bahan Baku Menggunakan Metode MRP pada Produksi Kursi Anyaman Aluminium (Studi Kasus : PT. XYZ) Fani Nafianti Putri Farenzy; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.59007

Abstract

PT. XYZ operates in the furniture production sector using a Make-to-Order (MTO) system for woven aluminum chairs. The company's primary challenge lies in the unplanned management of material requirements, which often results in a mismatch between inventory levels and production process requirements. This situation necessitates the implementation of a raw material planning method that can improve inventory control effectiveness and maintain smooth production activities. This study utilized several analytical stages: demand forecasting, preparation of a Master Production Schedule (JIP), application of Material Requirement Planning (MRP), and analysis of lot sizing techniques using the Lot for Lot (LFL) and Period Order Quantity (POQ) methods. Based on the forecasting test results, the Moving Average method provided the smallest error value with a MAD of 70.37, thus being selected as the basis for JIP preparation. Furthermore, the MRP calculation results indicated that the LFL method resulted in an inventory cost of Rp32,875,500 and was deemed more optimal than the POQ method for raw material inventory control. The implementation of this method is expected to improve inventory efficiency while supporting the company's smooth production process.
Rancang Bangun Mesin Pengaduk Bahan Karet dengan Pendekatan Antropometri untuk Meningkatkan Efisiensi Waktu Kerja (Studi Kasus: CV. Nur Hidayah) Aloysius Alviano Arya Lelana; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.59184

Abstract

This study aims to design and build a rubber material mixing machine using an anthropometric approach to improve work time efficiency at CV. Nur Hidayah. The main problem faced is that the rubber material mixing process is still done manually, so it takes a long time, a large workforce, and has the potential to cause fatigue and the risk of work injuries. The method used in this study is an engineering design method with an anthropometric approach, namely adjusting the dimensions of the machine to the worker's body size to create comfort and work efficiency. The data required are worker data, worker anthropometric data, and cost data. The results obtained for the body measurements used include a standing elbow height of 101 cm, a forward arm reach length of 70 cm, a knee height of 51 cm, and a hand span length of 149 cm. Before the machine was installed, CV. Nur Hidayah still manually mixed rubber tacks with a process time of approximately 58 minutes. After the mixing machine was designed and implemented, the mixing time was successfully shortened to approximately 15 minutes.
Analisis Pengendalian Persediaan Bahan Baku Menggunakan Metode Probabilistik Model P (Back Order) untuk Meminimalkan Biaya Persediaan pada UD XYZ Akbar Ramadhani; Sajiyo Sajiyo
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 3 (2026): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i3.59340

Abstract

An adequate supply of raw materials is one of the main factors in maintaining the smooth operation of the production process in the manufacturing industry. UD XYZ , a company that produces shoe soles, has experienced a shortage of raw materials, which has affected the production process and hindered the achievement of production targets. The purpose of this study is to analyze the inventory control system and determine the most efficient inventory policy. The methods used include forecasting with Moving Average (MA), Weighted Moving Average (WMA), and Single Exponential Smoothing (SES), as well as inventory control with the probabilistic P-Back Order Model. The results of the study show that the most optimal inventory solution is obtained in the fourth iteration with an order interval of 0.0891 years, an order quantity of 3,991.06 kg, a safety stock of 659.09 kg, a reorder point of 4,650.15 kg, and a total inventory cost of Rp 1,527,552,249.94. Implementing this policy is expected to minimize the risk of shortage, increase inventory efficiency, and support the smooth operation of the company's production activities.
Analisis Tinggi Seawall Optimal sebagai Proteksi Pantai terhadap Overtopping di Pantai Kota Maba Rizal Tukuwain; Hanie Teki Tjendani; Sajiyo Sajiyo
Jurnal Spesialis Teknik Sipil (JSpTS) Vol. 7 No. 1 (2026)
Publisher : Magister Teknik Sipil, Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Maba City Beach is a coastal area that is vulnerable to abrasion and sea wave runoff (overtopping) due to the influence of waves and tides. This study aims to analyze the optimal seawall height as coastal protection against overtopping at Maba City Beach, East Halmahera Regency. The research method used is a quantitative approach through coastal hydrodynamic analysis based on wind, fetch, wave, bathymetry, topography, and tidal data. The analysis was carried out through the stages of calculating wave transformation, refraction and shoaling coefficients, breaking waves, wave setup, and wave run-up to determine the planned seawall elevation. The results showed that the dominant wind direction came from the East and Northeast with an effective fetch of 60.691 km. The deep sea wave height was obtained at 1.7 m with a wave period of 5.7 seconds. Wave transformation produced a wave height near the coast of 1.77 m with a wave energy of 3.97 J/m² and an energy flux of 13.62 W/m. The breaking wave occurred at a depth of 1.95 m with a breaking wave height of 1.66 m and a spilling breaker type. The tidal analysis results showed a Highest High Water Level (HHWL) value of 2.09 m. The calculation of wave setup of 0.25 m and run-up of 0.15 m resulted in an optimal seawall elevation of 2.99 m above Mean Sea Level (MSL). This elevation is considered capable of reducing the risk of overtopping and providing effective protection to the coastal area of ​​Maba City Beach.
Analisis Beban Kerja Dan Pengaruhnya Terhadap Kelelahan Dan Pencapaian Target Produksi Ari Febrian Widjatmiko; Sajiyo Sajiyo
JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI Vol. 4 No. 3 (2026): Juli : Jurnal Ilmiah Teknik Industri dan Inovasi
Publisher : CV. ALIM'SPUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jisi.v4i3.1842

Abstract

Penelitian ini dilakukan untuk menganalisis beban kerja yang diterima pekerja di PT XYZ serta pengaruhnya terhadap tingkat kelelahan dan pencapaian target produksi perusahaan. Beban kerja yang tinggi pada operator produksi menyebabkan munculnya kelelahan fisik maupun mental yang berdampak pada penurunan produktivitas dan belum tercapainya target produksi yang telah ditetapkan. Oleh karena itu, penelitian ini bertujuan untuk mengetahui tingkat beban kerja operator, mengukur tingkat kelelahan kerja, menganalisis pengaruh kelelahan terhadap pencapaian target produksi, serta menentukan kebutuhan tenaga kerja yang optimal. Metode yang digunakan dalam penelitian ini meliputi pengukuran waktu kerja menggunakan stopwatch untuk memperoleh waktu standar dan output standar pada setiap stasiun kerja. Pengukuran kelelahan fisik dilakukan menggunakan metode Cardiovascular Load (%CVL) berdasarkan data denyut nadi istirahat dan denyut nadi kerja operator. Sementara itu, pengukuran beban kerja mental dilakukan menggunakan metode NASA-TLX (National Aeronautics and Space Administration Task Load Index) yang terdiri dari enam dimensi, yaitu kebutuhan mental, kebutuhan fisik, kebutuhan waktu, performansi, usaha, dan tingkat frustrasi. Selain itu, penentuan jumlah tenaga kerja optimal dilakukan menggunakan metode Workload Analysis (WLA).
Analisis Dan Sistem Pengendalian Persediaan Bahan Baku Dalam Meningkatkan Efisiensi Biaya Favian Jiwani; Sajiyo Sajiyo
JURNAL ILMIAH TEKNIK INDUSTRI DAN INOVASI Vol. 4 No. 3 (2026): Juli : Jurnal Ilmiah Teknik Industri dan Inovasi
Publisher : CV. ALIM'SPUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59024/jisi.v4i3.1844

Abstract

This study aims to analyze and propose improvements to the raw material inventory control system in a public street lighting pole manufacturing company. The problem faced by the company is that the inventory control system is still managed in a simple and non-integrated manner, resulting in delays in raw material procurement, discrepancies in inventory quantities, and increased operational costs that disrupt the smooth production process. This research uses the Material Requirement Planning (MRP) method as the main approach in planning raw material requirements. The research stages include collecting data on product demand, production data, raw material usage, inventory levels, ordering costs, holding costs, and procurement lead times. Demand data are analyzed using forecasting methods to estimate future production requirements, followed by material requirement calculations based on the Bill of Materials (BOM) and production planning. Furthermore, MRP analysis is conducted along with the implementation of lot sizing methods such as Lot for Lot (LFL), Economic Order Quantity (EOQ), and Period Order Quantity (POQ) to determine the optimal order quantity. The results of this study are expected to produce a more planned, effective, and efficient raw material inventory control system, enabling the company to minimize the risk of shortages and excess inventory, reduce inventory costs, improve the smoothness of the production process, and enhance the company’s ability to fulfill customer demand on time. Keywords: Cost Efficiency; Inventory Control; Material Requirement Planning (MRP); Production Planning; Raw Materials. Penelitian ini bertujuan untuk menganalisis serta memberikan usulan perbaikan terhadap sistem pengendalian persediaan bahan baku pada perusahaan manufaktur tiang Penerangan Jalan Umum. Permasalahan yang dihadapi perusahaan adalah sistem pengendalian persediaan yang masih dilakukan secara sederhana dan belum terintegrasi, sehingga sering terjadi keterlambatan pengadaan bahan baku, ketidaksesuaian jumlah persediaan, serta meningkatnya biaya operasional yang berdampak pada terganggunya kelancaran proses produksi. Penelitian ini menggunakan metode Material Requirement Planning (MRP) sebagai pendekatan utama dalam perencanaan kebutuhan bahan baku. Tahapan penelitian meliputi pengumpulan data permintaan produk, data produksi, penggunaan bahan baku, persediaan, biaya pemesanan, biaya penyimpanan, serta lead time pengadaan. Data permintaan dianalisis menggunakan metode peramalan untuk menentukan estimasi kebutuhan produksi di masa mendatang, kemudian dilakukan perhitungan kebutuhan material berdasarkan Bill of Materials (BOM) dan perencanaan produksi. Selanjutnya dilakukan analisis MRP serta penerapan metode lot sizing Lot for Lot (LFL), Economic Order Quantity (EOQ), dan Period Order Quantity (POQ) untuk menentukan jumlah pemesanan yang optimal. Hasil penelitian diharapkan mampu menghasilkan sistem pengendalian persediaan bahan baku yang lebih terencana, efektif, dan efisien, sehingga perusahaan dapat meminimalkan risiko kekurangan maupun kelebihan persediaan, menekan biaya persediaan, serta meningkatkan kelancaran proses produksi dan kemampuan perusahaan dalam memenuhi permintaan pelanggan secara tepat waktu. Kata kunci: Bahan Baku; Efisiensi Biaya; Material Requirement Planning (MRP); Pengendalian Persediaan; Perencanaan Produksi.
Co-Authors Akbar Ramadhani Aloysius Alviano Arya Lelana Amanda Seftia Andini Andi Patriadi Ari Febrian Widjatmiko Athok Urrahman Danang Ahmad Prayoga Daniel Nurhakim Agus Setiawan Dzaky Ekki Wibowo Endang Setyowati Fani Nafianti Putri Farenzy Favian Jiwani Freda Julia Najah Hanie Teki Tjendani Ida Ayu Sri Brahmayanti Kartini, Ida Ayu Nuh Kukuh Budi Prasetiya M Iqbal Saputra M. Sulton Bahrudin Mohammad Ravanda Habiburrahman Muhammad Burhan Jamaluddin Muhammad Iqbal Suseno Putra Paschal Rumihin Rizal Tukuwain Tasrikhut Tamam