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All Journal Biospecies Edu-Sains: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Jurnal Natur Indonesia AL KAUNIYAH SPEKTRUM INDUSTRI TEKMAPRO Journal of Industrial Engineering and Management Inspiratif Pendidikan Edukasi: Jurnal Pendidikan dan Pengajaran OPERATION EXCELLENCE: Journal of Applied Industrial Engineering PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Jurnal Penelitian Pendidikan IPA (JPPIPA) JATI UNIK : Jurnal Ilmiah Teknik dan Manajemen Industri Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri Metode : Jurnal Teknik Industri Jurnal Biologi Tropis Tibuana : Journal of Applied Industrial Engineering Martabe : Jurnal Pengabdian Kepada Masyarakat BIOEDUSAINS: Jurnal Pendidikan Biologi dan Sains Jurnal Iktiologi Indonesia (Indonesian Journal of Ichthyology) Industri Inovatif : Jurnal Teknik Industri Matrik : Jurnal Manajemen dan Teknik Industri Produksi Dedikasi: Jurnal Pengabdian Masyarakat Community Development Journal: Jurnal Pengabdian Masyarakat Indonesian Journal of Law and Economics Review Jurnal Filsafat Indonesia Jurnal Senopati : Sustainability, Ergonomics, Optimization, and Application of Industrial Engineering Indonesian Journal of Innovation Studies BIOMA : Jurnal Biologi dan Pembelajarannya Jurnal Literasi Pendidikan Fisika (JLPF) Jurnal Pengabdian Masyarakat Akademisi PELS (Procedia of Engineering and Life Science) Jurnal Teknologi dan Manajemen Industri Terapan Takuana: Jurnal Pendidikan, Sains, dan Humaniora Jurnal Karya Abdi Masyarakat Journal of Fish Health MIMBAR INTEGRITAS Jurnal Pengabdian Masyarakat Pinang Masak Innovative Technologica: Methodical Research Journal Physical Sciences, Life Science and Engineering Journal for Technology and Science Biodik: Jurnal Ilmiah Pendidikan Biologi Jurnal Natur Indonesia IJOT Widya Teknik Academia Open Biodiversitas Journal of Biological Diversity International Journal of Economic Integration and Regional Competitiveness
Tedjo Sukmono
Program Studi Teknik Industri Universitas Muhammadiyah Sidoarjo
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IMPLEMENTATION OF RELIABILITY CENTERED MAINTENANCE (RCM) II IN PACKAGING INDUSTRY PRODUCTION MACHINERY MAINTENANCE ACTIVITIES: Implementasi Reliability Centered Maintenance (RCM) II Pada Aktivitas Perawatan Mesin Produksi Industri Packaging Wahyu Nugroho; Tedjo Sukmono
Journal for Technology and Science Vol. 1 No. 1 (2024): Journal for Technology and Science
Publisher : PT ANTIS INTERNATIONAL PUBLISHER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61796/ipteks.v1i1.91

Abstract

Along with the increasing need for productivity and the use of high technology in the form of production machines and factories, the need for maintenance functions is also increasing. At PT. Weiss Tech, a packaging machine manufacturer, has problems mainly related to wire cut machine malfunctions which cause interruptions and delays in the production process and reduce machine performance. In overcoming these problems in this study, the Reliability Centered Maintenance (RCM) II method from Failure Modes and Effect Analyze (FMEA) was used. RCM II is one of the methods used to determine which components are due for repairs, while FMEA is defined as a method for identifying the root cause of engine failure. From the results of calculations using FMEA and RCM II, the results of the maintenance interval for the Electromotor component (electric motor) with a maintenance interval of 20 hours, for the Lower and upper nozzle components (upper and lower nozzles) with a maintenance interval of 181 hours, and for the Roller component (drive roller) ) with a treatment interval of 177 hours
EOQ Application Reduces PAC Inventory Cost in Water Treatment: Penerapan EOQ Mengurangi Biaya Persediaan PAC dalam Pengolahan Air Vanisa Reyhan Faradiba; Tedjo Sukmono
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2120

Abstract

General Background Inventory control plays a critical role in ensuring operational efficiency in water treatment systems. Specific Background Poly Aluminium Chloride (PAC) is a key chemical used in PDAM operations, requiring proper inventory management to avoid shortages and excessive costs. Knowledge Gap However, existing ordering policies often rely on frequent purchases without optimal cost considerations. Aims This study aims to analyze PAC inventory control using the Economic Order Quantity (EOQ) method to determine optimal ordering quantity and minimize total costs. Results The findings show that the optimal order quantity is 151,669.56 kg with an ordering frequency of 4 times per year, compared to 48 times under the company policy. Total inventory cost decreases from Rp54,287,987.83 to Rp7,886,816.84, resulting in significant cost savings. Safety stock is calculated at 10,199 kg and reorder point at 20,398 kg. Novelty This study applies EOQ analysis to PAC inventory in a water treatment context using real operational data. Implications The results provide a practical approach for improving inventory efficiency and reducing operational costs in water treatment companies. Keywords: Economic Order Quantity, Inventory Control, PAC Chemical, Water Treatment, Cost Optimization Key Findings Highlights Optimal order size significantly larger than current practice Ordering frequency reduced from monthly to quarterly pattern Inventory cost shows substantial reduction after method application
Line Balancing Optimization in Shoe Finishing Production Systems: Optimasi Keseimbangan Jalur dalam Sistem Produksi Penyelesaian Sepatu Rista Dwi Cahyaningurm; Tedjo Sukmono
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.2122

Abstract

General Background: Manufacturing systems often face inefficiencies due to unbalanced workloads across workstations, particularly in labor-intensive industries such as shoe production. Specific Background: In the finishing process of a shoe manufacturing company, production targets were not achieved due to bottlenecks in the creaming brushing process, where operation time exceeded the cycle time of 1.215 minutes. Knowledge Gap: Previous applications of line balancing methods have not sufficiently addressed workload imbalance in finishing lines with complex task distributions. Aims: This study aims to optimize the production line by applying the Largest Candidate Rule (LCR) and Region Approach (RA) methods to improve efficiency and workload distribution. Results: The findings show that both methods significantly improve performance, increasing line efficiency to 81.73%, reducing balance delay to 18.27%, and decreasing idle time to 1.998 minutes, while reducing the number of workstations from 15 to 9. Novelty: The study provides a comparative application of LCR and RA methods within a real shoe production finishing line and identifies layout considerations as a determining factor in method selection. Implications: The results suggest that implementing appropriate line balancing methods can support production target achievement and improve operational efficiency in manufacturing systems. Keywords: Line Balancing, Production Systems, Largest Candidate Rule, Region Approach, Workstation Optimization Key Findings Highlights Workstation reduction achieved through task redistribution across production stages Idle time minimized alongside improved workload allocation consistency Layout-based selection supports practical implementation of balancing methods
IMPLEMENTATION OF NAWAZ, ENSCORE, AND HAM (NEH) FOR MINIMIZE MAKESPAN IN JOB SHOP SCHEDULING Octavia Adistyas Nastiti; Tedjo Sukmono
International Journal of Economic Integration and Regional Competitiveness Vol. 2 No. 3 (2025): International Journal of Economic Integration and Regional Competitiveness
Publisher : Antis Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61796/ijeirc.v2i3.386

Abstract

Objective: PT. OPQ is a company that specializes in providing construction materials such as ready-mix concrete, precast concrete, concrete bricks and crushed stone. With 4 different compositions and high demand, it is not uncommon for problems to occur, namely late delivery. This research aims to increase work efficiency by minimizing makespan to reduce idle time which will impact delays in product delivery to customers. Method: The results of production scheduling using the NEH method produce smaller makespan results and faster production process completion times compared to the scheduling method used by the company. Results: The NEH method produces a makespan of 2.29 with the job sequence P3-P4-P2-P1. The method used by the company obtained a makespan of 3.01 with a partial work sequence of P2-P3-P4-P1. Novelty: This can prove that the calculation results using the NEH method can minimize makespan and this method can be used by companies as a reference for scheduling the production process to overcome the problems being faced by the company.
PRODUCTIVITY ANALYSIS USING THE COBB-DOUGLAS FUNCTION BASED ON EFFECTIVE WORKING HOURS Dyah Ayu Shinta Permatasary; Tedjo Sukmono
International Journal of Economic Integration and Regional Competitiveness Vol. 2 No. 2 (2025): International Journal of Economic Integration and Regional Competitiveness
Publisher : Antis Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61796/ijeirc.v2i2.387

Abstract

Objective: This research aims to compare the productivity of the amount of effective working time in the production department in 2021 and 2022. Method: The productivity measurement method is based on the Cobb-Douglas production function approach, so that we can know the extent of the company's efficiency and effectiveness. Productivity measurement is carried out using the Cobb-Douglas function approach. Results: This research shows that the level of productivity in 2022 is higher than in 2021 with the efficiency index values in 2021 and 2022 being 0.9499104 and 1.0599527. This means that the use of working hours increased by 11.58%. Novelty: These results can be used as consideration in maintaining and increasing productivity.
ANALYSIS TIME STUDY AND TAKT TIME IN THE PRODUCT LOADING PROCESS Mochammad Amru Nail Suherman; Tedjo Sukmono
International Journal of Economic Integration and Regional Competitiveness Vol. 2 No. 8 (2025): International Journal of Economic Integration and Regional Competitiveness
Publisher : Antis Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61796/ijeirc.v2i8.391

Abstract

Objective: The purpose of this study is to determine the standard delivery process time and also determine the speed of workers. Method: The results of observations in this study will be processed using the time study method, which is a process used to determine how long it takes when carrying out a job or task with the aim of improving performance. This method will then be compared with the takt time method, which is a method of determining decisions regarding production capacity through the production system within a predetermined time. Results: The results used as the best time determination using the standard time of 47.01 minutes. Then, the takt time result of 21.6 minutes is used as a simulation of a more efficient roll loading process planning proposal. Novelty: This research highlights the problem of differences in roll loading process time between morning, afternoon, and night shifts, resulting in a 74.7% decrease in shipping capacity. The study introduces a comparison between time study and takt time methods to improve process efficiency and optimize shipping capacity.
Scheduling The Production Process Using Genetic Algorithm Method In Optimization Improvement PT. Kemasan Ciptatama Sempurna Ahmad Fikri Ardianto; Tedjo Sukmono
Tibuana Vol 6 No 1 (2023): Tibuana
Publisher : UNIPA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/tibuana.6.1.6198.23-31

Abstract

PT. Kemasan Ciptatama Sempurna is a company engaged in manufacturing styrofoam . In the company concerned, the order system is still manual, where the order process only depends on the order order. This results in a less efficient scheduling system as evidenced by the ineffectiveness of the scheduling system when the number of orders from various consumers place orders simultaneously. The method used in this study uses a Genetic Algorithm approach , by choosing this method in this study it can improve problems in the company so that the scheduling system can run according to the wishes of consumers both in terms of scheduling time that has been agreed with consumers. The results of the research using the Genetic Algorithm method in production using genetic algorithms, the best time in scheduling production capacity is 2699 seconds, this is an increase in the efficiency of the production process as evidenced by the previous production activity process of 3600 seconds (corner production process), thus saving time by 901 seconds as well as the total time of the production process using a jobshop . can be reduced by selecting an alternative in the production jobshop using a genetic algorithm with a value of 0.023 seconds on the 11th chromosome.
PENINGKATAN LITERASI ENERGI TERBARUKAN MELALUI SMART TRAINER PLTS DI SMEDAKA KRIAN UNTUK MENDUKUNG SDGS NO. 7 Jamaaluddin Jamaaluddin; R. Dwi Hadidjaja Rasjid Saputra; Tedjo Sukmono; Fahrell Andhika Pratama; Askhaarina Aulia Tsalits
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 9, No 7 (2026): MARTABE : JURNAL PENGABDIAN MASYARAKAT
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v9i7.%p

Abstract

Kebutuhan media praktik energi terbarukan di SMEDAKA Krian menjadi dasar pelaksanaan kegiatan pengabdian kepada masyarakat ini. Pada kompetensi Teknik Instalasi Tenaga Listrik, materi Pembangkit Listrik Tenaga Surya (PLTS) sering kali belum mudah dipahami apabila hanya dijelaskan melalui gambar rangkaian, slide, atau uraian di kelas. Oleh karena itu, tim pengabdi merancang dan menyerahkan smart trainer PLTS sebagai alat pembelajaran yang dapat diamati, diukur, dan dioperasikan langsung oleh guru serta siswa. Trainer ini memperlihatkan hubungan kerja antara panel surya, solar charge controller, baterai, inverter, MCB, perangkat proteksi, dan beban listrik dalam satu rangkaian pembelajaran. Kegiatan menunjukkan bahwa trainer membantu guru menerangkan proses perubahan energi matahari menjadi energi listrik. Siswa juga memperoleh pengalaman awal dalam membaca tegangan, mengamati arus dan memahami fungsi penyimpanan energi. Selain memperkuat praktik pembelajaran di sekolah, kegiatan ini menjadi ruang penerapan keilmuan bagi dosen dan mahasiswa di luar kampus. Kehadiran smart trainer PLTS di SMEDAKA Krian diharapkan menjadi titik awal pengembangan pembelajaran energi bersih berbasis proyek yang sejalan dengan SDGs No. 7.
Co-Authors Abdul Rohman Abdul Rohman Adistyas Nastiti, Octavia Afreni Hamidah Agung Laksono Agus Subagyo Ahmad Fikri Ardianto Alfian Fajar Gunawan Ali Mashar Ali Sadikin Ali Sadikin Amatullah, Dhiny Angela, Fitrah Cornellya Apriliana Sari Wulandari, Indah Arba, Risqi Mutia Ardiansyah Eko Saputra Arifin , Zainul Arinda Jayanti Putri Askhaarina Aulia Tsalits Asni Johari Asrial Asrial Atika, Dewi Nur Atikha Sidhi Cahyana Azhari, Asri Bambang Hariyadi Bambang Hariyadi Bambang Haryadi Benedika Ferdian Hutabarat Bestia Dewi Boy Isma Putra Damayanti , Maharani Lutfiah Damris Muhammad Dani Sartika Darlim Darmawi Dawam Suprayogi Desfaur Natalia Dewi Nurus Silmi Dian Ratna Sari Didin Muhjidin Diwanti Faradiba, Nabila Dristiana, Fila Dwi Kakung Saputro Dyah Ayu Shinta Permatasary Dzati Fauziyah Ervan Johan Wicaksana Erwin Widiantono Fahrell Andhika Pratama Fajar Ardian Cahyo Putra FEBRINA ROLIN Fila Dristiana Gusti Nurina Azhariani Hafizah, Mutia Hana Catur Wahyuni Harlis Harlis Harlis Harlis Hartanti, Lusia Permata Sari Heni Asmora Ritonga Hery Murnawan, Hery Hutwan Syarifuddin Ihsan, Mahya Indra Lesmana Inggit Marodiyah Jamaaluddin Jamaluddin Jamaluddin Kania Fatikasari Khairatinisa Khairatinisa Krisna Risky Putra Irawan Lega Anattri Leksono, Rudy Bowo Lestari, Wiwik Puji Lindyawati, Lely M. F. Rahardjo M. Rusdi M.Haris Efendi Hsb Mardhotillah, Bunga Mauli, Fajar Dwi Mishani, Adinda Chamilia Mochammad Amru Nail Suherman Mochammad Imam Mashuri Mohammad Andi Rasyid Mohammad Buchori Mohammad Ekki Hadian Much Syafiudin Muhaimin Muhaimin Muhammad Arizki Zainul Ramadhan Muhammad Dio Dwi Septian Muhammad Erick Sanjaya Muhammad Hafid Fikrianto Mukhammad Rifky Ramadhan Mukhammad Surya Lesmana Muswita Muswita Muswita Muswita Nafis Khumaidah Natalia, Desfaur Naufalut Tharif Qurniawan Naufalut Tharif Qurniawan Nazifa, Boti Iffa Nisrina Salsabila Novi Prastyanda Putra Pratama Nugraha, A. Prima Nugroho, Dizsa Arliansyah NURJIRANA NURJIRANA Nurma M. Hidayatulloh Octavia Adistyas Nastiti Octavia Adistyas Nastiti Pangestu, Retno PRADITA EKO PRASETYO UTOMO Putra, Tri Syukria Putri Ramadhani Putri, Andini Faizatul Putri, Melinda Aprilia R. Dwi Hadidjaja Rasjid Saputra Rachman, Meisya Azzahra Radiana Atika Sari Rahmansyah, Muhammad Miftah Arzaq Rany Riyantati, Dena Rasyid, Mohammad Andi Rayandra Asyhar Revis Asra Revis Asra Ribangun Bamban Jakaria Rifli Rindes Riska Afrilia Rista Dwi Cahyaningurm Rizky Janatul Magwa Rudy Bowo Leksono Safitri , Salsa Zulfa SANDI KURNIAWAN Sanjaya, Muhammad Erick Saputra, Nur Qomaruddin Sari , Indah Apriliana Sari W, Indah Apriliana Sari Wulandari, Indah Apriliana SARWO EDY WIBOWO Setiawan, Ardhi Wahyu Setiawan, Ari Rio De Sigit Wahono sisiliani, fitria trisna Sofillauny, Zahara Sonia Angellina Saputri Suhadak Sulistiono Suzanti, Sriliah Syaiful Syaiful Syaifullah, Dikril Ilham TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Tedy Azmi Nasution TEJA KASWARI Tia Wulandari TIA WULANDARI Tri Syukria Putra Ucop Haroen Upik Yelianti Utomo, Pradita Eko Prasetyo Vanisa Reyhan Faradiba Varid Jainuri Vivin Nur Oktavianty Wahono, Sigit Wahyu Nugroho Wahyu Setiawan, Ardhi Wardhani, Devira Kusuma Wawan Kurniawan Wijatmiko, Erie Fadma Noer Fitriana Wilda Syahri Winda Dwi Kartika, Winda Dwi Wiwik Sulistiyowati Wulandari, Indah Apriliana Sari Yoppie Wulanda Yusuf Effri Prastyo Budi Zurweni Zurweni