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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Journal of ICT Research and Applications Proceeding of the Electrical Engineering Computer Science and Informatics Prosiding Seminar Nasional Pakar Aptisi Transactions on Management Journal of Applied Information, Communication and Technology AICS Prosiding Konferensi Nasional PKM-CSR Ranah Research : Journal of Multidisciplinary Research and Development ILTEK : Jurnal Teknologi
Maulahikmah Galinium
Swiss German University
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 Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Nursing Public Health Social Sciences Transportation Other

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ENSURING FULL INSTANT SPARE PART AVAILABILITY TO SUPPORT MINING RIGID DUMP TRUCK 150 TON CLASS RENTAL CONTRACT PERFORMANCE Mohamad Toyibin; Yunita Umniyati; Maulahikmah Galinium
ILTEK : Jurnal Teknologi Vol. 21 No. 01 (2026): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/iltek.v21i01.463

Abstract

Studi ini menyelidiki ketersediaan suku cadang Full Instant (FI) yang rendah untuk 25-unit truk pembuangan kaku pertambangan batu bara 150-ton yang disewa dari PT XYZ ke PT PQR. Sementara unit-unit tersebut secara umum memenuhi persyaratan Ketersediaan Fisik (PA) 90%, ketersediaan suku cadang FI sering kali turun di bawah target 80%, yang membahayakan efisiensi operasional dan keandalan peralatan. Dengan menggunakan metode DMAIC, akar permasalahan diidentifikasi, termasuk peramalan yang buruk, koordinasi yang lemah antar departemen, dan inspeksi yang tidak teratur, yang menyebabkan keterlambatan pengiriman suku cadang. Strategi perbaikan—mencakup peningkatan infrastruktur, integrasi ERP, digitalisasi backlog, klasifikasi inventaris, dan peningkatan inspeksi—menghasilkan hasil yang signifikan: akurasi peramalan (MAPE) meningkat dari 117% menjadi 11,16%, penutupan backlog meningkat dari 56% menjadi 92%, dan lead time turun dari 9,2 menjadi 1,25 hari. Akibatnya, PA mencapai 95,1% dan ketersediaan suku cadang FI meningkat menjadi 83%, melampaui target kontrak. Keuntungan ini mencegah potensi kerugian pendapatan sewa sebesar ~Rp250 juta pada awal tahun 2025 dan menghasilkan penghematan yang diproyeksikan sebesar Rp1,5 miliar, yang menggarisbawahi peran transformasi digital dalam meningkatkan efisiensi operasional dan kinerja kontrak sewa.
Leveraging Technology and Human Capital Development for Productivity Enhancement: A Case Study of The Transformer Project I Gusti Bagus Aditya; rer. nat. Filiana Santoso; Maulahikmah Galinium
ILTEK : Jurnal Teknologi Vol. 21 No. 01 (2026): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/iltek.v21i01.499

Abstract

Despite Indonesia’s coal output surpassing 775 million tons in 2023, contractors continue to face inefficiencies due to low equipment utilization, inconsistent operator discipline, and weak digital integration. This study examines The Transformer Project, a collaboration between PT XYZ and PT United Tractors, combining Prodigy (real-time monitoring system) and Coretana (competency-based training) to enhance Komatsu PC1250 excavator performance. A sequential explanatory mixed-method approach was employed: FGDs and root cause analysis, a TAM survey validated through SEM, and KPI-based performance measurement. Results indicate weak explanatory power of TAM (R² = 5.6%), yet the interventions achieved substantial operational improvements: productivity increased by 47%, idle time decreased by 15%, fuel efficiency improved by 10%, and operator competency rose by 19%. The findings suggest that in capital-intensive industries, technology adoption is shaped more by organizational enforcement and KPI-driven incentives rather than individual perception, highlighting the need for extended adoption models.
Breaking Barriers: Performance Optimization of Super Big Digger PC2000-8 at PT ABC Using DMAIC Methodology Samino Samino; Maulahikmah Galinium; Togar Wiliater Soaloon Panjaitan Dena
ILTEK : Jurnal Teknologi Vol. 21 No. 01 (2026): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/iltek.v21i01.504

Abstract

This research addresses the suboptimal physical availability (PA) of the PC2000-8 Super Big Digger at PT ABC, a major mining contractor in partnership with PT United Tractors. From January to June 2024, the average PA was only 87.04%, below the target of 92%, posing operational risks and reducing stakeholder confidence. The study applied the DMAIC (Define, Measure, Analyze, Improve, Control) Six Sigma methodology to examine six key maintenance indicators: Periodical Service Achievement, Lead Time Accuracy, Hour Meter Accuracy, Periodical Service Accuracy, Backlog Execution Lead Time, and Start Time Accuracy. Analytical tools such as Fishbone Diagram and Failure Mode and Effects Analysis (FMEA) were used to identify root causes. The analysis revealed high Risk Priority Numbers (RPNs) in the lubrication, air conditioning, and sensor systems. Improvements were implemented through grease injector upgrades, AC component modifications, and enhanced maintenance coordination. Results showed significant improvements in Mean Time to Repair (MTTR), reduced from 4 hours to 1.69 hours, and an increase in PA from 87.04% to 93.77% by July 2025. This study demonstrates that a structured, data-driven DMAIC approach can effectively improve mining equipment reliability and sustain operational performance.
Achieving Physical Availability Target of Excavator PC210-10M0 Using FMEA and TNA at Sangatta Stevanus Edwin Eka Aditiyanto; Maulahikmah Galinium; Dena Hendriana
ILTEK : Jurnal Teknologi Vol. 21 No. 01 (2026): ILTEK : Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/iltek.v21i01.506

Abstract

ABC has received a complaint from PT. XYZ as their customer because of poor performance excavator PC210-10M0. The research problem is PC210-10M0 machines’ performance by Physical Availability (PA) of PT. ABC has been under target 85% for the last six months. Research objective is achieving target PA Excavator PC210-10M0 PT. ABC 85%. This research will follow the DMAIC framework with several analysis tools, including Fish Bone Diagram, Design Thinking, Training Need Analysis (TNA), and Failure Mode and Effect Analysis (FMEA) to find the most significant root cause of the problem. SWOT, TOWS, and QSPM analysis are used to find and select the most suitable strategies, then Cost-Benefit Analysis is used to determine the final action plan derives from the strategies. There are 5 action plans implemented: develop web-based applications, offer maintenance contracts, arrange basic maintenance training program, undercarriage replacement, and oil damper monitoring. After implementing the improvement activities, breakdown from undercarriage and engine reduce in duration and frequency. PA PC210-10M0 rise from 78.47% at the end of November 2024 to 88.56% at the end of July 2025. The implementation of Preventive Maintenance along with mechanics’ development programs, has a positive impact on the increase in PA of the PC210-10M0.
Co-Authors Ahmad Rinaldi Widianto Alva Erwin Anthony Widjaja Anto Satriyo Nugroho Baehaqi, Hendy Charles Lim Defiana Sulaeman Dena Hendriana Djatmiko, Budi Eka Budiarto Erwin, Alva Fendi Jati Kuncoro Firstama, Panjinagara Vandy I Eng, Kho I Gusti Bagus Aditya I Nyoman Sutapa Ipung, Heru Purnomo Irawan, Krisma Budianto James Purnama Jason Yapri Kafin, Kafin Kevin Andika Lukita Leeson, Marchelno Lim, Charles Marico, Joxel Marpaung, Abdullah Muzi Masasi, Gianino Michelle, Nastassja Mohamad Toyibin Mukadis, Panji Nehemia, Rangga Ninda Lutfiani Oliver, Stefanus Rangga Nehemia rer. nat. Filiana Santoso Rifki Danu Rendradi Rinaldi Widianto, Ahmad Samino Samino Setyonugroho, Adityo Soetomo, Mohammad Achmad Amin Stefanus Ardhito Prasetya Stevanus Edwin Eka Aditiyanto Sukandar, Bernhart Farras Timothy Aditya Sutantyo Togar Wiliater Soaloon Panjaitan Dena Umniyati, Yunita Yunita Umniyati