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INDONESIA
Jurnal Surya Teknika
Published by Universitas Muhammadiyah Riau
ISSN : 23546751     EISSN : 27237222     DOI : 10.37859
Core Subject : Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
a media of communication and reply forum for scientific works especially concerning the fields of industrial technology, machinery, and automotive.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 434 Documents
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Pendekatan HIRADC untuk Mengidentifikasi Risiko Keselamatan dan Kesehatan Kerja di Perpustakaan Sekolah Rahmayani, Amalia Azka; Muwahidah, Qanita ‘Abida
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11555

Abstract

School libraries are often overlooked in terms of structured occupational health and safety (OHS) management, as they are commonly perceived as relatively safe work environments, even though they contain a variety of potential hazards. This study employed a qualitative descriptive approach involving three school libraries in the Special Region of Yogyakarta. Data were collected through observation, measurement, and document review, then analyzed using the HIRADC method. The study identified 11 potential hazards across five factors: physical (3 hazards), chemical (2), biological (2), ergonomic (2), and psychological (2). Risk assessment revealed one high-level hazard (presence of flammable materials, RR=15), four medium-level hazards (RR=6–9), and six low-level hazards (RR=2–4). Administrative controls primarily through SOP development and routine staff training dominated the recommendations, supplemented by engineering controls such as ventilation systems and fire detection installations. These findings underscore the need for a structured OHS program in school libraries to sustainably protect the safety of librarians and library users.
Kajian Sistematis Mekanisme Kegagalan Struktural Wire Rope pada Sistem Crane Industri dan Efektivitas Metode Inspeksi Non-Destructive Testing (NDT) Arraffi, Femas; Priyana, Onny Andre; Jasmine, Khulud Nur; Putri, Talita Andina; Purnama, Satria Candra; Priyanto, Kaleb
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11564

Abstract

Wire rope is a critical component in industrial crane systems, susceptible to structural failure due to cyclic loading, fretting wear, and corrosion. Prior reviews have addressed failure mechanisms or Non-Destructive Testing (NDT) methods in isolation, without integrating both perspectives or incorporating Indonesian national literature. This study systematically analyzes wire rope structural failure mechanisms and comparatively evaluates the effectiveness of various NDT methods through a Systematic Literature Review (SLR) following the PRISMA protocol. Searches across Scopus, ScienceDirect, Google Scholar, and Portal Garuda (2002–2025) identified 159 articles, of which 35 met the inclusion criteria. Literature quality was assessed using an adapted CASP/NOS rubric, yielding a mean score of 7.2/10. Findings indicate that fatigue induced by fretting wear is the most frequently reported failure mode (84% of studies), with Von Mises stress concentrations at strand-sheave contact points consistently exceeding the yield strength of wire steel (≈650 MPa). Among NDT methods evaluated, Magnetic Flux Leakage (MFL) demonstrated the highest relative performance, with defect classification accuracy reaching 95.3% and a minimum detectable metallic area loss of 1–2% under laboratory conditions. Synthesis of findings yields a conceptual framework for NDT- and condition-based maintenance (CBM)-integrated wire rope integrity management as the principal contribution of this study.
Optimalisasi Pengendalian Persediaan Bahan Baku untuk Meminimalkan Biaya Persediaan Menggunakan Metode Economic Order Quantity (EOQ) di PT XYZ Widyantika, Wandah; Purnama, Jaka
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11569

Abstract

Delays and shortages of raw materials in the plastic bag production process can disrupt production activities and increase the company’s operational costs. This study aims to analyze the application of the Material Requirements Planning (MRP) method in raw material planning to ensure that material availability is fulfilled in the right quantity and at the right time. The research process begins with demand forecasting, followed by the application of the Economic Order Quantity (EOQ) method to determine the optimal raw material order quantity in order to control inventory costs efficiently. In addition, an analysis of operational losses caused by one hour of production idle time was conducted using a loss profit approach based on income and company expenses. The results show that the implementation of the EOQ method generated total inventory costs of Rp216,740,485, indicating that the method is effective for application in PT XYZ. The idle time analysis revealed total labor losses of Rp256,200.87, consisting of income losses of Rp239,488.61 and company expenses of Rp16,712.26. These findings indicate that delays in raw material supply not only hinder the production process but also lead to operational losses because the company must continue to incur labor costs during production idle time.
Analisis Beban Kerja pada Lini Produksi Menggunakan Metode Cardiovascular Load dan Work Load Analysis Hidayati, Evi; Purnama, Jaka
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11572

Abstract

The study was conducted at PT XYZ, a manufacturing company engaged in the production of yarn using a make-to-stock production system. The problem faced by the company is the failure to achieve consistent production due to suspected imbalances in operator workloads at several workstations. This study aims to analyze operator workload levels and determine optimal workforce requirements using the Cardiovascular Load (CVL) and Work Load Analysis (WLA) methods. The CVL method was used to determine the workload levels experienced by operators, derived from work heart rate and resting heart rate, while WLA was used to calculate the optimal number of operators based on working time. Research data was obtained through direct observation, work time measurements, and measurements of operators’ heart rates during the production process. The results indicate the presence of operators with high workload levels as well as an imbalance in the number of workers at several workstations, resulting in the production process not yet operating optimally. Therefore, adjustments to the number of workers and a more balanced division of labor are necessary to improve the company’s productivity.
Kajian Nilai Kehilangan Panas pada Boiler terhadap Penurunan Efisiensi Termal Menggunakan Metode Indirect di PLTU X Sumitra, Indriyani; Syahka Habibi, Fairuz; Teofilius , Lukas
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11582

Abstract

Boiler adalah komponen utama di Pembangkit Listrik Tenaga Uap (PLTU) yang berfungsi untuk menghasilkan uap. Uap ini digunakan untuk menggerakkan turbin. Jika kinerja boiler menurun karena kehilangan panas, maka efisiensi termal akan menurun dan konsumsi bahan bakar akan meningkat. Penelitian ini bertujuan untuk menganalisis seberapa besar nilai kehilangan panas dan bagaimana pengaruhnya terhadap efisiensi boiler di PLTU X. Boiler yang dianalisis adalah boiler tipe DG 1025/17.4-II.13 dengan kapasitas produksi steam 1025 ton/jam pada unit PLTU berdaya 315 MW. Metode yang digunakan dalam penelitian ini adalah metode indirect yang berdasarkan standar ASME PTC 4.1. Analisis dilakukan dengan menghitung berbagai komponen heat loss, seperti kehilangan panas gas buang kering, moisture dari pembakaran hidrogen, kandungan air pada bahan bakar, dan kelembapan udara pembakaran. Hasil penelitian menunjukkan efisiensi boiler pada beban ±280 MW berada pada kisaran 83,19%–83,64%. Kehilangan panas terbesar berasal dari gas buang kering sebesar 5,76%–6,15%, diikuti moisture pembakaran hidrogen sebesar 4,614%–4,642% dan moisture bahan bakar sebesar 3,844%–3,863%. Hasil ini menunjukkan bahwa pengendalian temperatur gas buang dan kualitas bahan bakar berperan penting dalam meningkatkan efisiensi boiler.
Analisis Beban Kerja guna Menentukan Tenaga Kerja Optimal Plant II di PT. Keramik Diamond Industries Gresik dengan Metode WLA Wardana, Yoga Putra; Widiasih, Wiwin
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11586

Abstract

PT. Keramik Diamond Industries is a wall and floor tile manufacturing company required to meet production targets effectively and efficiently. In Plant II, the monthly production target of 400,000 m2 was not achieved from January to July 2025; therefore, an evaluation of labor requirements based on actual workload was needed. This study aims to determine the optimal number of workers in the Body Preparation, Press, Glazing, Kiln, and Grading processes using the Work Load Analysis (WLA) method. Data were collected through direct observation, stopwatch time study, production records, working-hour data, and workers’ pulse-rate measurements. The analysis stages included data uniformity and adequacy tests, cycle time calculation, normal time, standard time, standard output, WLA, and physical workload evaluation using Cardiovascular Load (CVL). The WLA results show that the optimal labor requirement is 36 operators compared with the actual condition of 20 operators, with the highest additional needs found in the Kiln and Body Preparation processes. The average CVL value of 63.92% indicates that work-system improvement is required. Adjusting the number of operators is expected to balance workload and support productivity improvement in Plant II.
Analisis Beban Kerja Fisik dan Penentuan Jumlah Tenaga Kerja pada Produksi Roller Conveyor Mahfudzy, Shoulton Arieffudin; Widiasih, Wiwin
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11587

Abstract

This study aims to analyze the physical workload, fatigue levels, and determine the optimal number of workers in roller conveyor production within the machining division of PT. XYZ. Manual work processes involving continuous standing postures cause high levels of worker fatigue. This condition impacts production fluctuations, which frequently fail to achieve the monthly target of 3,217 pcs. This research utilizes Cardiovascular Load (CVL) to measure physical workload via heart rate, the 30-item IFRC questionnaire to assess subjective fatigue, and Workload Analysis (WLA) to evaluate the workload. The results showed an average %CVL of 50.02% (classified as heavy workload). Fatigue levels increased drastically from an average score of 52 (pre-work) to 68 (post-work). WLA results confirmed a workload imbalance across workstations. To achieve the 3,217-unit target, 24 workers are ideally needed, while only 20 are currently available. The company is advised to add 4 new workers and implement cross-training to balance the production line.
Perancangan Ulang Alat Pengepres Ikan Berbasis Antropometri untuk Meningkatkan Efisiensi Produksi Tepung Ikan pada CV Hasil Laut Kharisma Putri, Dwi Ratih; Febri Satoto, Handy
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11612

Abstract

The fish meal processing industry at the CV scale generally still performs the fish pressing process manually using a lever system, which requires a long time, great operator effort, and produces non-uniform pressing results. This study aims to redesign the fish pressing tool to be more ergonomic using an anthropometric approach so that the tool dimensions match the operators’ body characteristics. Anthropometric data in the form of Standing Shoulder Height (SSH) and Hand Reach (HR) were collected from all operators at the pressing station, then processed through calculations of the mean, standard deviation, data adequacy test, data uniformity test, and percentile calculation. The first percentile was selected so that the tool can be used by operators ranging from the smallest to the largest body size. The processing results determined a tool height of 132.35 cm based on the first percentile of SSH and a working-area depth of 71.82 cm based on the first percentile of HR, with a tool length of 245 cm. The application of these ergonomic dimensions produced a better working posture, reduced bending, and supported increased efficiency of the fish meal production process.
Analisis Perencanaan Kapasitas Produksi Menggunakan Metode Rough Cut Capacity Planning (RCCP) untuk Mencapai Target Produksi Benang Plastik Polypropylene (PP) pada Line Lohia 1 Agustina, Nur Hayati; Purnama, Jaka
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11632

Abstract

PT XYZ is a manufacturing company that produces Polypropylene (PP) plastic yarn as raw material for woven bags and jumbo bags. The problem on the Lohia 1 Line is that the production target of 17,000 kg/day has not been achieved because the available production capacity does not meet production requirements. This study aims to analyze the suitability between capacity requirements and available production capacity using the Rough Cut Capacity Planning (RCCP) method. The research used data from the 2025-2026 period through demand forecasting, preparation of the Master Production Schedule (MPS), Bill of Resources calculation, and preparation of an RCCP report comparing actual capacity requirements with available capacity. The results show that the available production capacity is unable to meet capacity requirements in all twelve planning periods (under-capacity condition). The highest capacity requirement occurred in September 2026 at 635.33 hours, while the available capacity was only 446.62 hours, resulting in a capacity shortage of 188.71 hours. Capacity adjustment is needed through downtime reduction, improved machine effectiveness, and additional operating hours to support the achievement of production targets.
Desain Sistem Kontrol Cerdas Penyeimbangan Sel Baterai yang disusun Seri Safitri, Wiwit Yuni; Rahmawati, Asde; Fahrizal, Fahrizal; Akramunnas, Basthul Wajhi; Septiyeni, Tesya Uldira
SURYA TEKNIKA Vol 13 No 1 (2026): JURNAL SURYA TEKNIKA
Publisher : Fakultas Teknik UMRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37859/jst.v13i1.11634

Abstract

Batteries are used as energy storage devices due to their high energy and power density. Battery cells are typically connected in series to achieve higher voltage and power capacity. However, differences in chemical and electrical characteristics of each cell can lead to voltage imbalance after repeated charge-discharge cycles. This condition ultimately reduces the total capacity of lithium-ion batteries and shortens their lifespan. This study introduces an efficient and high-performance cell balancing mechanism specifically designed for series-connected batteries. To optimize the balancing process and ensure voltage uniformity across the cells, an intelligent Fuzzy Logic Kontroler is integrated to control the balancing circuit. Simulation results show that the use of intelligent control can achieve battery voltage balance within 60 seconds.

Page 43 of 44 | Total Record : 434

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