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Irawan, Heri Tri
Jurusan Teknik Industri, Fakultas Teknik, Universitas Teuku Umar
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Transportation Other

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Optimasi Penjadwalan Preventive Maintenance Komponen Boiler Menggunakan Genetic Algorithm dengan Strategi Grouping Azhar Azhar; Iing Pamungkas; Heri Tri Irawan
Jurnal Optimalisasi Vol 12, No 1 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v12i1.14909

Abstract

Operational reliability of Boilers in Steam Power Plants (PLTU) is often undermined by reactive and fragmented maintenance strategies that trigger frequent unplanned shutdowns and operational inefficiencies. This study aims to optimize preventive maintenance schedules for nine critical Boiler components in Units 1 and 2 of PLTU Nagan Raya using a Genetic Algorithm-based Grouping Maintenance strategy. Failure behaviour of components such as Cyclone Separators, Coal Feeders, and Fans is first modelled using Weibull and Normal distributions, selected through the Anderson–Darling goodness-of-fit test. An optimization model is then developed to determine a single global maintenance interval that maximizes operating time while satisfying a minimum system reliability constraint of 60%. Simulation of individual component scheduling yields highly non-synchronized intervals, ranging from 14 to 78 days, which would result in excessive shutdown frequency if implemented directly. Through Genetic Algorithm optimization, an optimal grouped maintenance interval of 10.42 days is obtained, driven primarily by the Primary Air Fan as the system bottleneck. Although this interval sacrifices part of the remaining life of more durable components, the grouped strategy significantly reduces the total number of shutdowns and simplifies maintenance planning. The main contribution of this study is a reliability-constrained grouped maintenance scheduling model for multi-component boiler systems in coal-fired power plants, providing a practical decision-support tool for improving unit availability.
Optimalisasi Proteksi Tanaman Padi melalui Perancangan Alat Pengusir Burung Otomatis Berbasis Arduino ATmega2560 dan Solar Panel Heri Tri Irawan; Rahmat Satya; Roid Alazhar Nasution; Iing Pamungkas
Jurnal Optimalisasi Vol 12, No 1 (2026): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v12i1.14687

Abstract

Bird pests such as sparrows, weavers, munias, and finches pose a serious problem for rice farmers, particularly during the generative growth stage when ripening panicles are easily consumed, causing yield losses of up to 30–50% and threatening food security. Traditional deterrent methods, including scarecrows, noise-making devices, and firecrackers, provide only temporary effects with limited coverage and require repetitive manual supervision that is both exhausting and inefficient. This study aims to design and develop an automatic bird repellent device based on sensors and a microcontroller, powered by an independent solar panel system, to protect rice crops effectively without continuous human monitoring. The research adopts a stepwise prototype development approach consisting of planning (designing a steel-pipe frame and selecting components such as an Arduino ATmega2560, HC-SR04 ultrasonic sensor, PIR sensor, tweeter speaker, 50 Wp solar panel, and 12 V 8 Ah battery), production (hardware assembly and Arduino C programming), testing (sensor–sound functionality and field operation), and performance evaluation through analysis of detection data and reduction in bird attacks. The results show that the device operates stably, with PIR detection up to 11 m, ultrasonic detection from 1–4 m, audiosonic output at 4069 Hz (84–91 dB), an effective repulsion radius of 14 m, and a reduction in bird attacks of about 90% (from 100 events to 3 events over six days), all using stand-alone solar energy without significant disturbances. The system is environmentally friendly, weather-resistant, and has the potential to improve rice farming productivity, with further recommendations including optimization of sensor positioning and enhanced protection against extreme weather conditions.
Analisis Sistem Antrian pada Proses Penimbangan dan Sortasi TBS di PT RKM Iing Pamungkas; Heri Tri Irawan; Mahmud Basuki; Rizki Agam Syahputra; Viktor Mawar Berutu
Jurnal Industri dan Inovasi (INVASI) Vol 4, No 1 (2026): Maret
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/invasi.v4i1.13352

Abstract

Within the palm oil industry, the process of weighing and sorting Fresh Fruit Bunches (FFB) at the beginning of the supply chain is crucial for determining the price and quality of palm oil. However, PT RKM, a palm oil processing company in Aceh Singkil, faces challenges such as potential inaccuracies in weight measurement, quality classification, and long queues that can reduce operational efficiency. These issues have the potential to cause financial losses and production delays. The objective of this study is to measure and analyze the queuing system in the FFB weighing and sorting process at PT RKM. This research uses a queuing model approach to evaluate the current system's efficiency. Data were collected through direct observation and interviews, with 30 samples of truck arrival and service times. The analysis method used includes creating an Activity Cycle Diagram (ACD), calculating the average inter-arrival and service times, and determining system performance metrics such as average waiting time and server idle percentage.The results of the study show that the PT RKM queuing system operated optimally on the day of observation. The average queue waiting time was zero, and the percentage of idle servers (weighing facilities) was also zero. This indicates that the current service capacity is adequate for the volume of vehicle arrivals, thereby minimizing losses and improving overall productivity.
Pemberdayaan Galangan Kapal Tradisional Aceh Barat untuk Meningkatkan Kualitas Produksi Kapal Tradisional di Aceh Barat Iing Pamungkas; Heri Tri Irawan; Abdiel Khaleil Akmal; Risnadi Irawan; T.M. Azis Pandria; Azhar
Jurnal Pengabdian Mitra Indonesia Vol 1 No 1 (2025): Agustus 2025
Publisher : Mitra Akademia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.67380/jpmina.v1i1.3

Abstract

Pengabdian masyarakat ini bertujuan memberdayakan galangan kapal tradisional di Aceh Barat guna meningkatkan kualitas produksi kapal. Industri ini merupakan warisan budaya penting, namun menghadapi tantangan signifikan, seperti kurangnya standar mutu, yang berdampak pada rendahnya daya tahan produk dan menurunnya daya saing. Metode pelaksanaan kegiatan ini meliputi sosialisasi, pelatihan, dan pendampingan partisipatif yang berfokus pada manajemen mutu sederhana, pemilihan bahan baku yang tepat, serta penerapan standar operasional prosedur (SOP) yang sesuai dengan kondisi lokal. Hasil pengabdian menunjukkan adanya peningkatan kualitas produk yang signifikan, terlihat dari konstruksi kapal yang lebih kokoh dan efisiensi penggunaan material. Para pengrajin kini mampu menghasilkan kapal yang lebih awet, yang secara langsung meningkatkan kepercayaan konsumen dan daya saing di pasar. Selain itu, kegiatan ini juga berhasil menumbuhkan kesadaran kolektif tentang pentingnya menjaga mutu. Kesimpulannya, pemberdayaan berbasis pengetahuan ini merupakan strategi efektif untuk melestarikan industri tradisional. Disarankan untuk membentuk kelompok mandiri pengrajin dan menjalin kolaborasi dengan pemerintah agar dampak positif ini berkelanjutan dan dapat meningkatkan kesejahteraan masyarakat galangan kapal di Aceh Barat.
Co-Authors AA Sudharmawan, AA Abdiel Khaleil Akmal Abdiel Khaleil Akmal Abdiel Khaleil Akmal Abdiel Khaliel Akmal Adib Adib Adib Adib, Adib Arga, Dwi Prasiska Lena ARHAMI ARHAMI Arhami, Arhami Arie Saputra Arkanullah, Lian Arrazy Elba Ridha Aulia Agung Dermawan Azhar Azhar Azhar Azhar Azhar Bahri, M Irvanni Balqis, Syarifah Naila Bismi Khairijal Danil Danil Dirhamsyah, Muhammad Fadjrin, Sitti Fajar Okta Widarta Fauza, Teuku Soleh Fitriadi Fitriadi Hasan Yudie Sastra Hasanuddin, Iskandar Hasnita Hasnita Hasnita, Hasnita Husni Husni Iing Pamungkas Iqbal, Mohd Irawan, Risnadi Kasmawati Kasmawati Khairul Hadi M. Dirhamsyah M. Dirhamsyah Mahmud Basuki Muhammad Ardiansyah Muhammad David Muzakir Muzakir, Muzakir Nissa Prasanti Nuzuli, Fajar Putra, Gaustama Rahmat Satya Rita Hartati riza ulhaq Rizki Agam Syahputra Roid Alazhar Nasution Sofiyanurriyanti Sugeng Santoso Syahputra, Riski Agam T. M. Azis Pandria T.M. Azis Pandria Viktor Mawar Berutu Zhaqiri, Hazdfi