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All Journal Jurnal Teknik Industri Terintegrasi (JUTIN) ILTEK : Jurnal Teknologi
Sakti, Yuni Krida
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Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Optimalisasi pengolahan limbah diapers bayi berbasis ekonomi sirkular berkelanjutan dengan pemodelan sistem dinamis di Kota Surabaya Sakti, Yuni Krida
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 1 (2025): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i1.40999

Abstract

The problem of baby diapers waste is currently an environmental issue globally. Especially in big cities, one of which is the city of Surabaya. Because diapers waste is difficult to decompose naturally, it requires innovative and sustainable management optimization. By implementing circular economy programs through the Diapers Waste Bank and non-governmental organizations, it is hoped that it will be able to reduce the pile of diapers waste and improve the economic welfare of the local community. This study aims to predict the reduction of diapers waste piles and the economic value of diapers waste within a period of 13 years, Data from 2020 to 2033 by optimizing the effectiveness of the Waste Bank and involving community participation in recycling programs and as customers. With a dynamic system modeling approach, it is known that the increase in diapers waste reduction in 2033 will be able to reach 1,2085.68 tons with an initial value of 64.98 tons with an effectiveness rate of 57% and a customer growth rate of 45% and an economic value of around 10 billion rupiah. If the optimization reaches 80%, it can achieve the zero waste target.
Pemodelan Implementasi Cost Down Blasting Melalui Daur Ulang Limbah Solar Dan Oli Bekas Dengan Pendekatan Metode 5 WHY Analisis dan Simulasi Sistem Dinamis Sakti, Yuni Krida
ILTEK : Jurnal Teknologi Vol. 20 No. 01 (2025): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/iltek.v20i01.220

Abstract

Blasting in mining is intended to break large rocks into smaller sizes for easier transport to processing facilities. However, high blasting costs have become a major issue at PT. X, a coal mining company. A significant portion of these costs is due to the annual consumption of approximately 200,000 liters of pure diesel for ANFO mixing, amounting to IDR 1.8 billion. This study aims to analyze the root cause of high blasting costs using the 5 Why Analysis method and forecast potential cost reductions over the next 12 months using system dynamics simulation. The primary cause identified is the full reliance on pure diesel for ANFO mixing. As a corrective strategy, a Cost Down Blasting approach is proposed by utilizing recycled diesel and used hydraulic oil in the ANFO mix. Simulation results show that blasting costs could be reduced by around IDR 500 million, or approximately 28%, with pure diesel consumption reduced to 141,689 liters. In addition, the use of recycled diesel and oil could increase to 56,137 liters, compared to only 22,396 liters in the previous year.
Evaluasi Ergonomi Proses Rebus Garam dan Rekomendasi Intervensi di Laboratorium Industri Garam Tabuni, Nuas; Kunhadi, Dedy; Fais, Moh Ainul; Sutejo, Bambang; Sakti, Yuni Krida
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 8 No. 4 (2025): October
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v8i4.50475

Abstract

The salt boiling process in small-scale industries is still largely performed manually, requiring repetitive physical activities that can potentially lead to musculoskeletal disorders among workers. This study aims to evaluate ergonomic risks in the salt boiling process and formulate improvement interventions to reduce these risks. A quantitative approach was applied through work posture observation, the Nordic Body Map (NBM) questionnaire, and posture assessment using the Rapid Entire Body Assessment (REBA) method on three operators in a salt industry laboratory. NBM results indicated that the highest complaints occurred in the back, waist, shoulders, and lower limbs. REBA analysis identified the drying stage as the most high-risk activity (score 10, very high), followed by salt cooking (score 8, high), and fire stove preparation (score 6, medium). Based on these findings, interventions such as adjusting worktable height, using lifting aids, and implementing job rotation are recommended to reduce injury risk while improving operator productivity.
Analisis Penyebab Utama Kerusakan Suara pada Speaker dengan Menggunakan Metode Fishbone Diagram dan FMEA Sakti, Yuni Krida
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 1 (2024): January
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i1.24645

Abstract

Speaker damage consists of sound damage and appearance damage. Most speaker product defects are due to sound damage, so this greatly affects the quality of the speaker. The voice damage that has the largest percentage is the VCT (Voice Coil Touch) type of damage at 47.6% compared to appearance damage which only reaches 1.6%. This research aims to determine the main cause of VCT damage using the FMEA (Failure Mode and Effect Analysis) method, so it can be seen that the main cause is human factors with the type of failure in installing a slanted voice coil with the highest RPN (Risk Priority Numbers) value of 216.  
Pemodelan Sistem Dinamis Analisis Ketercapaian Reduksi Sampah Plastik Pada TPA Kota Surabaya Sakti, Yuni Krida; Andi, Dwi
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 7 No. 3 (2024): July
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v7i3.32112

Abstract

The accumulation of plastic waste in the city of Surabaya has increased significantly every year. There are approximately 128,480 tons of plastic waste per year at the Benowo Surabaya Final Disposal Site (TPA), with a growth rate of around 1.29% per year. Meanwhile, the Surabaya Main Waste Bank (BSIS) in 2023, which partners with 600 Waste Bank Units (BSU) and 1190 individual customers, has reduced plastic waste by around 60 tons per year. In that year, BSIS reduced landfill plastic waste by 0.05%. The Surabaya City Government targets BSIS to reduce plastic waste accumulation by 1825 tons per year. This research aims to predict the achievement of this target, through dynamic system simulation modeling methods. By using analysis and calculations from secondary data, the average growth rate for BSU active partners is 11.5% per year and individual customers is 15.8% per year. Based on the results of dynamic system simulations, it is known that the target can possibly be achieved in 2030 with a reduction in plastic waste of 1,862 tons per year.
Co-Authors Andi, Dwi Bambang Sutejo, Bambang Dedy Kunhadi Moh. Ainul Fais Tabuni, Nuas