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Jurnal Manajemen dan Teknologi Rekayasa
Published by Institut Teknologi Dirgantara Adisutjipto
ISSN : 29640741     EISSN : 29627079     DOI : http://dx.doi.org/10.28989/jumantara.v1i1
Core Subject : Science, Engineering,
Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering Mechanical Engineering
JUMANTARA is a journal that publishes scientific articles from the Industrial Engineering discipline. JUMANTARA is published by the Industrial Engineering Study Program of Institut Teknolgi Dirgantara Adisutjipto. JUMANTARA accepts manuscripts or articles in industrial engineering from various academics and researchers, both nationally and internationally. The articles published in JUMANTARA include the results of scientific research covering fields of study, including: Production System Work system design and ergonomics Industrial Management Supply Chain Inventory System Scheduling System Performance measurement Industrial Automation System Optimization Simulation Reliability Maintenance management Economics Engineering Manufacturing process and other relevant fields of study
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 63 Documents
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Evaluasi Potensi Bahaya dan Risiko Kecelakaan Kerja Dengan Metode Hazard Identification and Risk Assesment (HIRA) & Job Safety Analysis (JSA) Studi Kasus: Area Boiler PLTU Rembang Faturohman, Deden Hamdani; Ernawati, Rieska
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 4, No 2 (2025): Juli
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v4i2.2897

Abstract

PLTU Rembang merupakan salah satu dari sekian banyak pembangkit listrik di Pulau Jawa yang terletak di Jalan Raya Semarang-Surabaya (Pantura) Jawa Tengah. Tujuan dari penelitian ini adalah untuk mengevaluasi potensi bahaya dan risiko kecelakaan kerja dengan objek penelitian ini adalah area Boiler PLTU Rembang. Adapun metode dalam melaksanakan identifikasi bahaya, evaluasi dan pengendalian risiko dalam kegiatan tersebut mengunakan metode Job Safety Analisis (JSA) pendekatan HIRA sesuai dengan standart K3 yang berlaku. Hasil dari penelitian ini diketahui 26 potensi bahaya dari aktivitas yang dilaksanakan pada pekerjaaan di area boiler. Adapun 16 bahaya yang ada dikategorikan rendah, 7 bahaya yang ada dikategorikan moderat dan 3 bahaya dikelompokkan pada tingkat risiko tinggi. Pengendalian risiko diharapkan untuk mencegah kecelakaan kerja dengan memastikan lingkungan kerja aman dan mengurangi kondisi tidak aman (unsafe condition) dan perilaku yang tidak aman (unsafe action).
Analisis Perhitungan Harga Pokok Produksi Menggunakan Metode Full Costing Dan Penetapan Harga Jual Dengan Pendekatan Cost Plus Pricing pada Usaha Kopi X Hamdani, Erwin; Yuamita, Ferida
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 4, No 2 (2025): Juli
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v4i2.3051

Abstract

Usaha Kopi X merupakan usaha toko kopi yang mengalami permasalahan dalam perhitungan harga pokok produksi (HPP) dan penetapan harga jual. Hal ini berdampak pada ketepatan dalam menghitung HPP dalam memperoleh laba yang diinginkan, jika penentuannya tidak tepat dapat membuat terjadinya kesalahan dalam penentuan laba yang diharapkan. Penelitian ini bertujuan menganalisis perhitungan HPP menggunakan metode full costing dan penetapan harga jual melalui pendekatan cost plus pricing (CPP) dengan objek penelitian adalah minuman berbahan dasar kopi. Berdasarkan hasil analisis penelitian HPP dari kedua produk yang dianalisis menurut full costing lebih tinggi dibandingkan perhitungan pemilik yang hanya menghitung biaya bahan baku dan bahan penolong. Penetapan harga jual dengan CPP markup 25% menghasilkan harga jual lebih tinggi dari yang ditetapkan pemilik. Hasil perhitungan break even point (BEP) menunjukkan titik impas tercapai pada penjualan 64 unit dan 99 unit dari kedua produk. Margin kontribusi untuk saltca sebesar Rp15.114/unit dengan contribution margin ratio (CMR) 58,22% dan latte es Rp14.672/unit dengan CMR 61,78%. Dari hasil penelitian ini diperlukan penerapan full costing dan CPP serta analisis BEP untuk menetapkan laba dan merencanakan target penjualan agar mampu menutupi seluruh total biaya produksi dan menghasilkan laba yang optimal pada Usaha Kopi X.
Analisis Musculoskeltal Disorders (MSDs) Pada Pekerja di Konfeksi CV. Jaya Indah Collection Menggunakan Metode Rapid Upper Limb Assessment (RULA) dan Rapid Entre Body Assessment (REBA) Fauzy, Muchammad Riza; Syiam, Kulsum Lailatus; Dalulia, Primahasmi; Kautsar, Fu'ad; Wiati, Ni Made
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 4, No 2 (2025): Juli
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v4i2.2932

Abstract

CV. Jaya Indah Collection merupakan industri manufaktur yang bergerak dibidang konfeksi,. Beberapa karyawan mengalami keluhan seperti nyeri pada kaki, lutut, tangan, leher dan punggung. Data tersebut di rekap menggunakan kuesioner Nordic Body Map (NBM) yang telah di isi oleh karyawan di setiap stasiun kerja. Langkah selanjutnya dilakukan analisis postur kerja menggunakan pendekatan Rapid Upper Limb Assessment (RULA) untuk karyawan di bagian pengemasan dan pendekatan Rapid Entire Body Assessment (REBA) untuk operator bagian pemotongan dan jahit. Dari hasil pengolahan dengan metode REBA didapatkan skor 9 di pemotongan dan 5 di penjahitan.  Terakhir metode RULA didapatkan skor 4. Rekomendasi perbaikan pun telah diberikan kepada mitra sehingga dapat mengurangi skor yang tinggi. baik metode REBA maupun RULA.
Identification and Evaluation of Waste in Animal Feed Production Line Using an Integrated VSM and VALSAT Approach Anggita, Putri; Wati, Piguna; Izzuddin, Sabiq Dimas; Mukhtar, M. Nushron Ali
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3123

Abstract

This study evaluates the application of Lean Manufacturing principles using the Value Stream Mapping (VSM) methodology to systematically identify and eliminate waste in the production operations of the breeding animal feed division of PT XYZ. This issue is crucial because the high demand for feed products, especially in the breeder division of PT XYZ, requires the company to make continuous process improvements. This study aims to evaluate the application of Lean Manufacturing principles using the Value Stream Mapping (VSM) and Value Stream Analysis Tools (VALSAT) approaches to identify and eliminate waste in the livestock feed production line. Primary data collection included direct observation studies, structured questionnaires, and in-depth interviews with operators, supplemented by secondary data obtained through a systematic literature review. The application of Value Stream Analysis Tools (VALSAT) revealed that process inefficiencies mostly stemmed from waiting time, product defects, and excessive production output. The VSM analysis of the current condition showed a value-added ratio of 69.05%, with the mapping of the future condition after intervention showing an increase to 70.49%. [Deleted]. This study produced actionable operational recommendations, enabling PT XYZ to align its production system with contemporary industry benchmarks for optimal performance.
The Implementation of an Integrated Pull System to Improve Work Effectiveness in the Raw Material Laboratory of PT. XYZ Chairani, Aproditha Alya; Merdikawati, Silvia; Sudri, Ni Made
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3566

Abstract

PT. XYZ is a company in the cosmetics sector. In its product development process, the raw material laboratory in the R&D division experienced obstacles in the raw material trial process, which caused 15.2% of trial journals to be temporarily halted and placed on hold. This research was conducted to maintain the availability of raw materials in the laboratory and improve the smoothness of the trial process. The approach used was quality control and improvement through the concept of a pull system, lean manufacturing, and the Quality Control Circle method. Improvements made included the implementation of a pull system for raw material management, rescheduling of checking and material preparation pickets, and strengthening personnel discipline towards SOPs in all trial stages. The evaluation results showed a decrease in the number of obstacles per week from 10 obstacles to 0 obstacles in the 10th week of 2025. This research contributes to providing a model for improving laboratory efficiency through the integration of a pull system to increase speed and accuracy in the product development process.
Analysis of Downtime Common Rail Deutz Technology Engine Using RCM Methods Darmawan, Rachmat; Julian, Fajar Azhari; Rachmayani, Novianti; Mulyana, Andri; Rochim, Abdul
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3451

Abstract

This study aims to analyze and minimize engine downtime on Deutz common rail technology using the Reliability Centered Maintenance (RCM) approach on the TMX-450 Pushback unit which is commonly used in the aviation industry. The analysis uses quantitative data based on downtime data and intervals related to downtime frequency data on injector components which have recorded failure parts with a frequency of 10 times and accumulated downtime of 21 hours. The results of the analysis on downtime values before and after the implementation of RCM are the inspection schedule increased from 5% to 12%, the repair schedule increased from 24% to 49%, the discharge schedule increased from 10% to 19%, and of course no treatment decreased significantly from 61% to 20%. The conclusion is that the implementation of RCM reduces total downtime by 30% and provides an increase in component reliability to 98.8% which shows that RCM is effective in optimizing maintenance scheduling.
Evaluation of Hybrid Classroom Implementation in Room A101 Alifudin, Ilham; Irwan, Hery
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3494

Abstract

The rapid development of information and communication technology (ICT) has accelerated the adoption of blended learning in higher education, combining traditional classroom instruction with online participation. To support this approach, universities require hybrid classroom systems that allow synchronous interaction between on-site and remote students. This study presents the design and implementation of a hybrid classroom in Room A101 using affordable and easily accessible devices. The system was built with a webcam connected to a mini PC and monitor, a wireless clip-on microphone integrated with the lecturer’s laptop, a projector supported by an HDMI switcher, and a stable internet connection. Implementation followed five stages: needs analysis, system design, installation, workflow, and evaluation. Technical testing covered video, audio, speaker performance, and internet stability, while user surveys captured perceptions of effectiveness. Results showed the system delivered acceptable 720p video, clear audio, and stable connectivity. Survey feedback indicated satisfaction levels of 82% for video, 88% for audio, 75% for speaker performance, and 84% overall. These findings confirm that low-cost hybrid classroom solutions can enhance flexibility, inclusivity, and accessibility in higher education, while remaining practical and replicable in similar institutional contexts.
Bibliometric Analysis of UAV/Drone Maintenance Publications Santoso, Prasidananto Nur; Poerwanto, Eko; Pinandhita, Lazuardy Rahendra; Zabidi, Yasrin; Mauidzoh, Uyuunul; Rahmawati, Fajar Khanif
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.2898

Abstract

This study highlights the lack of comprehensive studies on UAV (Unmanned Aerial Vehicle) and drone maintenance, despite numerous bibliometric studies conducted in other fields. This knowledge gap on this crucial aspect of UAV technology necessitates an in-depth analysis of the existing literature. The primary objective of this study is to conduct a bibliometric analysis of publications related to UAV/drone maintenance to map the literature, identify trends, and highlight contributions from different countries, universities, and authors. The analysis was conducted by collecting metadata from 30 years of academic publications (1994–2024) indexed in databases such as Scopus, and using VOSViewer to visualize the bibliometric network. Expected outcomes include identification of the most influential publications, authors, and journals, mapping research trends, and insights into collaboration opportunities between researchers and institutions. These findings are expected to guide future research by providing research topic recommendations to address existing literature gaps. Overall, this study offers a comprehensive overview that enriches the literature and encourages significant innovation in UAV/drone maintenance.
Inventory Control of Coffee Raw Materials Using The Economic Order Quantity (EOQ) Method Hapsari, Yaning Tri; Dwinugroho, Theofilus Bayu; Anton, Anton
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.3416

Abstract

Management of raw material supplies at the Kopi Merapi Babadan is still carried out conventionally. The purchase of raw materials made by the Kopi Merapi Babadan did not have a plan and was based on estimates only. This often causes a mismatch in the existing raw material inventory with the number of raw materials to be processed in the production process, causing the costs incurred to purchase raw materials inappropriately. The EOQ method is a method that is often used in supply chain concepts. Applying the Economic Order Quantity (EOQ) method can provide an estimate of the raw material requirements that will be used in the production process to balance the expenditure of raw materials and the products produced. This research aims to control the supply of coffee beans using the EOQ method. The data collected is in the form of data on the amount of raw materials needed, the number of orders for raw materials, ordering costs, and storage costs. The savings that the Company can make by implementing EOQ for optimal orders are IDR 550.000,- or 31,34%. The company saves IDR 294,020 (24.50%) by coordinating with suppliers compared to using EOQ without coordination. The company can save 48.23% or IDR 844,020 if it uses EOQ with supplier coordination, compared to the company's actual conditions.
Design of the Cassava Slicing Machine Using the Pahl & Beitz Method (Case Study on a Chips MSME in Wonosobo, Central Java) Nugroho, Catur Rizki; Marfuah, Hasti Hasanati
JUMANTARA: Jurnal Manajemen dan Teknologi Rekayasa Vol 5, No 1 (2026)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/jumantara.v5i1.2982

Abstract

The design of a cassava slicing machine using the Pahl & Beitz method serves as a solution to improve production capacity and work efficiency in a cassava chips MSME located in Wonosobo, Central Java. The manual cassava slicing process often requires a long time, increases the risk of injury, and produces non-uniform slices. The Pahl & Beitz method is applied through four main stages: task clarification, concept development, form design, and design evaluation. This study presents novelty in implementing a V-belt and pulley-based transmission system with a compact dimensional configuration adapted to the limited production space of MSMEs, as well as the use of type 304 stainless steel to ensure product hygiene and machine durability. Compared to conventional slicing machines, this design demonstrates an increase in capacity of up to 70 kg/hour, along with better energy efficiency and operator safety. This research is expected to serve as a reference for the development of appropriate technology to support MSMEs in the food processing sector, enhance competitiveness, and meet the growing market demand.

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