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All Journal TEKMAPRO Journal of Industrial Engineering and Management Jurnal Teknologi JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri Jurnal Sains dan Teknologi: Jurnal Keilmuan dan Aplikasi Teknologi Industri INTECOMS: Journal of Information Technology and Computer Science Jurnal Serambi Engineering STRING (Satuan Tulisan Riset dan Inovasi Teknologi) RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Jurnal Engine: Energi, Manufaktur, dan Material SIGMA TEKNIKA International Journal of Science, Engineering and Information Technology Jurnal Surya Teknika INNOVATION RESEARCH JOURNAL Jurnal Pengabdian kepada Masyarakat DedikasiMU: Journal of Community Service Teknika Sains : Jurnal Ilmu Teknik Profisiensi : Jurnal Program Studi Teknik Industri IJCOSIN : Indonesian Journal of Community Service and Innovation JUSTI (Jurnal Sistem dan Teknik Industri) Journal Industrial Engineering and Management (JUST-ME) Journal Of Humanities Community Empowerment JGEN : Jurnal Pengabdian Kepada Masyarakat RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Nina Aini Mahbubah
Universitas Muhammadiyah Gresik
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering 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 Medicine & Pharmacology Public Health Social Sciences Transportation Other

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EVALUASI POSTUR KERJA OPERATOR PENGGILINGAN KELAPA BERBASIS METODE WORKPLACE ERGONOMIC RISK ASSESMENT DAN JOB STRAIN INDEX Hidayatullah, Iqbal Fikri; Mahbubah, Nina Aini; Hidayat, Hidayat
RADIAL : Jurnal Peradaban Sains, Rekayasa dan Teknologi Vol. 9 No. 2 (2021): RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi
Publisher : Universitas Bina Taruna Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (859.21 KB) | DOI: 10.37971/radial.v9i2.230

Abstract

Home-industry is a job that depend on human labor. Coconut milling is a home-service which is depend on manual material handling through production process services. Early result based on Nordic Body Map questionnaire (NBM) exposed that coconut milling operators had skeletal muscle complaints, so an ergonomic risk evaluation was needed to prevent skeletal muscle disorders. The purpose of this study is to evaluate ergonomic risk in order to prevent coconut milling operators from being affected by musculoskeletal disorders. Workplace Ergonomic Risk Assessment (WERA) and Job Strain Index (JSI) are ergonomic approaches that are used based on the risk of repetitive motion, vibration strength, contact stress and task duration involving five main areas of the body, namely shoulders, wrists, back, neck and legs which can cause Musculoskeletal Disorders. The results showed an improvement in working posture which initially had a WERA value of 44 for operator 1 and 45 for operator 2, then improved to 27 at the low level. Furthermore, the improvement of working posture in the neck should be in a position of 10°-20° at medium level and moderate movement with multiplied pause activities. Conditions for improving work activities at the JSI value of 9 for operator 1 and 20 for operator 2 were then improved to 4.5. Improved working posture, namely in operator 1's wrist which is too bent, it is recommended for operator 1's wrist not to form an angle of less than 15° to reduce the risk.
EVALUASI RISIKO CEDERA MUSCULOSCELETAL BERBASIS METODE RULA DAN REBA PADA OPERATOR BAGIAN PENGIRIMAN BARANG DI PT DCF Dhonny, Mohammad Ahsantudh; Mahbubah, Nina Aini
SIGMA TEKNIKA Vol 8, No 2 (2025): SIGMATEKNIKA, VOL. 8, N0. 2, NOVEMBER 2025
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v8i2.8497

Abstract

This study aims to evaluate the risk of Musculoskeletal Disorders (MSDs) during manual material handling activities at Firm DCF's warehouse. Tasks such as lifting, moving, and arranging goods manually can cause risk due to non-ergonomic postures. The research began with observation and Nordic Body Map (NBM) questionnaires, followed by posture analysis using the Rapid Entire Body Assessment (REBA) and Rapid Upper Limb Assessment (RULA) methods. The results indicate that the highest risk occurs during receiving and picking activities, with REBA scores of 11 and RULA scores of 7. This result shows the need for immediate corrective action. The primary contributing factors are bending postures, heavy loads, and repetitive movements. Recommended improvements include providing training on proper lifting techniques, using mechanical aids such as hand pallets or trolleys, and adjusting rack heights to match optimal reach distances. Implementing ergonomic risk principles is expected to reduce injury risks, enhance work comfort, and sustain productivity among warehouse employees at PT DCF.
Improving the Economy of Tenggor Village through Catfish Cultivation Using the Biofloc Method Hidayat; Nina Aini Mahbubah; Muhammad Zainur Ridlo; Rohmat; Ulil Aulia; Tajri
Journal Of Humanities Community Empowerment Vol. 3 No. 3 (2025): Journal of Humanities Community Empowerment
Publisher : Universitas Muhammadiyah Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32528/jhce.v3i3.4451

Abstract

This Community Service Program was carried out in Tenggor Village with the aim of improving the productivity and efficiency of catfish farming through the application of the biofloc system. The biofloc method was selected for its ability to utilize microorganisms to convert organic waste into natural feed, thus reducing feed costs and maintaining water quality. The program was implemented using a participatory approach, involving stages of field surveys, socialization, technical training in biofloc pond construction, cultivation assistance, and evaluation for sustainability. The results show the successful construction of one biofloc pond with a capacity of 1,000–1,200 fish, an increase in community knowledge from 40% to 85%, faster growth rates with a survival rate of 90%, and operational feed cost efficiency of 20–30%. In addition to its economic benefits, the program strengthened community cooperation and improved entrepreneurial awareness. These outcomes indicate that the biofloc system has strong potential to be expanded as a model for sustainable local economic development based on aquaculture.
KOMPARASI METODE SIMPLE ADDITIVE WEIGHTING DAN WEIGHTED PRODUCT PADA PEMILIHAN VENDOR BEARING TURBIN DI PT. AZ Galih Aditya Pangestu; Nina Aini Mahbubah; Purwanto Purwanto
SIGMA TEKNIKA Vol 9, No 1 (2026): SIGMATEKNIKA, VOL.9, N0. 1, JUNI 2026
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v9i1.9101

Abstract

This study aims to compare and contrast the Simple Additive Weighting (SAW) and Weighted Product (WP) methods in supplier selection at a power generation company. The firm challenge with a problem that supplier selection process that remains subjective and based on a single criterion, namely price. This study applies a descriptive quantitative approach using data from fifteen suppliers evaluated on five criteria: price, lead time, quality, delivery accuracy, and capacity. Each step of the SAW and WP methods is systematically described from decision matrix construction, This study aims to compare and contrast the Simple Additive Weighting (SAW) and Weighted Product (WP) methods in supplier selection at a power generation company. The firm challenge with a problem that supplier selection process that remains subjective and based on a single criterion, namely price. This study applies a descriptive quantitative approach using data from fifteen suppliers evaluated on five criteria: price, lead time, quality, delivery accuracy, and capacity. Each step of the SAW and WP methods is systematically described from decision matrix construction, normalization, to ranking. The results show that both methods yield identical top three rankings, namely suppliers S11, S12, and S14. Ranking differences in two pairs of alternatives with close values. Both methods yield consistent decisions and can serve as an objective basis for supplier selection, to ranking. The results show that both methods yield identical top three rankings, namely suppliers S11, S12, and S14. Ranking differences in two pairs of alternatives with close values. Both methods yield consistent decisions and can serve as an objective basis for supplier selection
INTEGRASI METODE LEAN MANUFACTURING - SPC - ERGONOMI GUNA MEMINIMALISIR PEMBOROSAN PROSES PRODUKSI AIR MINUM DALAM KEMASAN DI PT DCDC Muh Qorik Maulana Asim Aldifa; Nina Aini Mahbubah; Purwanto Purwanto
SIGMA TEKNIKA Vol 9, No 1 (2026): SIGMATEKNIKA, VOL.9, N0. 1, JUNI 2026
Publisher : Fakultas Teknik, Universitas Riau Kepulauan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33373/sigmateknika.v9i1.9164

Abstract

Efficiency is essential in production. PT. DCDC encounters challenges such as defects, non-ergonomic work motions, excess inventory, and low safety compliance. This study aims to reduce waste in the production of bottled mineral water by integrating lean manufacturing, statistical process control (SPC), and ergonomic practices. Data were gathered through direct observation and historical records, with analyses including control charts, process mapping, and root cause analysis. The findings indicate a total cycle time of 5,044.45 seconds, with only 4% allocated to value-added activities. Proposed improvements include using SPC to minimize defects, applying the 5S principles, enhancing ergonomics in material handling, and promoting a more vigorous health and safety culture.
Comprehensive Hazard Identification and Risk Assessment (HIRARC) in the Coffee Production Process: A Case Study of Kopi Lanange Jagad _ Hidayat; Mochammad Nuruddin; Elly Ismiyah; Said Salim Dahda; Nina Aini Mahbubah; Rifky Maulana Yusron; Rohmat -; Muhammad Zainur Ridlo
International Journal of Science, Engineering, and Information Technology Vol 10, No 1 (2025): IJSEIT volume 10 Issue 1 December 2025
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v10i1.32380

Abstract

Occupational Safety and Health (OSH) plays a critical role in maintaining safe and sustainable production, particularly in small-scale agro-industrial operations such as coffee processing. This study applies the Hazard Identification, Risk Assessment, and Risk Control (HIRARC) framework to evaluate workplace hazards at Kopi Lanange Jagad, a micro-scale coffee producer in Malang Regency, Indonesia. Field observations and structured interviews were conducted to identify potential hazards across four production stages roasting, grinding, sieving, and packaging. Quantitative measurements were also taken, including ambient temperature, noise level, and airborne dust concentration, to provide empirical data for risk evaluation. The findings identified a total of 12 hazards, classified into three risk categories: high (25%), moderate (50%), and low (25%). The roasting process exhibited the highest risk score (R = 18.4), with average workplace temperatures reaching 85°C–120°C, significantly exceeding the national occupational limit of 30°C for moderate workloads (Permenaker No. 5/2018). The grinding stage also presented considerable hazards, with airborne dust concentrations averaging 2.4 mg/m³, approaching the Ministry of Manpower’s threshold limit value (TLV) of 3 mg/m³. Manual packaging was associated with ergonomic strain, where workers lifted 15–20 kg sacks repeatedly, leading to potential musculoskeletal disorders. Risk evaluation revealed that existing control measures such as natural ventilation and sporadic use of personal protective equipment (PPE) were insufficient to ensure worker safety. To reduce these hazards, the study recommends implementing engineering controls such as local exhaust ventilation and machine insulation, combined with administrative measures including job rotation, scheduled rest breaks, and regular safety training. Ensuring consistent PPE use especially heat-resistant gloves, dust masks, and ear protection can further mitigate residual risks. Overall, the application of the HIRARC framework at Kopi Lanange Jagad demonstrates its effectiveness as a low-cost and practical tool for identifying, prioritizing, and managing occupational hazards in small-scale coffee industries. Implementation of the proposed control strategies is projected to reduce total workplace risk by 35–40%, improving both worker well-being and operational productivity.
Co-Authors Abu Rizal Firmansyah Achmad Fany Rislamy Achmad Maulana Abdillah Afifuddin Zhuhri Agachi, Muhammad Rigam Agung Dharma Eka Ahmad Ari Afifudin Akhmad Wasiur Rizky Alfina Fitri Damayanti Ali Zainal Abidin Ananda Hernawan Andi Rahmad Rahim Andrianto Eko Saputra Andrik Duwi Satrio Ari Aprian Amartya Aryncha, Gilang Riski Ayu Lestari Bashori, Shiddiq Adhim Belita Mega Musfita Chusain Chusain Deny Andesta Dhonny, Mohammad Ahsantudh Dimas Aditya Ferdiansyah Dzakiyah Widyaningrum Elly Ismiyah Fikri, M. Afdholul Galih Aditya Pangestu Gilang Putut Wijonarko Gilang Riski Aryncha Hendra Sapta Putra Hendrik Ady Saputro Hidayat Hidayat Hidayat Hidayat Hidayat Hidayat Hidayatullah, Iqbal Fikri Igo Ramadhan Ilham Nur Novadi Ilmansyah, Yahdi Khoiratus Zaidah Kurniawan, Moh Dian M. Tajul Arifin Ma'ruf, Najah Maulana Maghfur Rozudin Miftahul Qowim Misbah Misbah Mochammad Nuruddin Moh. Dian Kurniawan Moh. Jufriyanto Muh Qorik Maulana Asim Aldifa Muhammad Ikhlasul Amal Muhammad Indra Rizaldi Muhammad Ryfqie Alamanda Rozaq Muhammad Shofiyyullah Muhammad Taufiqul Ihsan Muhammad Zainuddin Fathoni Muhammad Zainur Ridlo Nofanda, Taraz Atillah Nur Fauziyah Nur Kholis Azis Olivia, Vina Agustin Prakoso, Aditya Hendi Prayuda, Rengga Aldi Pregiwati Pusporini Pujo Purnomo PURWANTO Purwanto Purwanto R Indriawan Praja Kusuma Renaldy Eka Ramadhan Rifky Maulana Yusron Rifqi Dhiaul Firdaus Rislamy, Achmad Fany Rizal Anggara Kurniawan Rohmat Rohmat - Said Salim Dahdah Seftian Amiludin Septia Priambodo Shiddiq Adhim Bashori Sukaris Syahrul Akbar Tajri Tutut Nur Asih Ulil Aulia Wiryawan, Muhammad Ricky Yahdi Ilmansyah Yan Defit A'an Syaifullah Yanuar Pandu Negoro Yanuar Pandu Negoro Yusufatama Widjaya Zhuhri, Afifuddin _ Hidayat