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All Journal Jurnal Fisika FLUX JTT (Jurnal Teknologi Terpadu) AL-JAZARI JURNAL ILMIAH TEKNIK MESIN Jurnal Pengabdian Al-Ikhlas Jurnal Sains Riset Jurnal Engine: Energi, Manufaktur, dan Material Community Development Journal: Jurnal Pengabdian Masyarakat Journal of Industrial Engineering and Operation Management (JIEOM) Yayasan Cita Cendikiawan Al Khwarizmi SENTRI: Jurnal Riset Ilmiah Semanggi: Jurnal Pengabdian kepada Masyarakat AMMA : Jurnal Pengabdian Masyarakat Beujroh : Jurnal Pemberdayaan dan Pengabdian pada Masyarakat JURNAL INOVASI TEKNIK INDUSTRI
Ice Trianiza
Program Studi Teknik Industri, Universitas Islam Kalimantan Muhammad Arsyad Al Banjari, Banajrmasin
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Integrasi Analisis Reliability Dan Availability Dalam Penentuan Interval Perawatan Optimal Excavator Faisal Rahman; Firda Herlina; Ice Trianiza; Saifullah Arief
Jurnal Teknologi Terpadu Vol 14 No 1 (2026): JTT (Jurnal Terpadu Terpadu)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32487/jtt.v14i1.3017

Abstract

Effective maintenance is an essential factor in ensuring the reliability and availability of equipment, especially for heavy equipment that operates intensively. This study aims to optimize the maintenance interval of excavator units by considering the value of reliability against time, to obtain a balance between reducing the risk of failure and maximizing operational availability. Historical data of time between failures (TBF) and time to repair (TTR) were collected from a PC 200 excavator unit operating in a coal mine in South Kalimantan from January 2024 to June 2025. Initial analysis was carried out using a Pareto diagram to identify critical systems, followed by failure mode and effect analysis (FMEA) to determine repair priorities. TBF and TTR modeling were tested with four probability distributions (Normal, Lognormal, Weibull, and Exponential) using the Anderson–Darling goodness-of-fit test, with the result that both data follow a Lognormal distribution. Distribution parameters were used to calculate mean time between failures (MTBF), mean time to repair (MTTR), the reliability function R(t), and availability. The results show an increase in availability from 96.15% to 96.59% after implementing the selected distribution, as well as a decrease in MTTR from 11.21 hours to 9.92 hours. Analysis of the relationship between reliability and availability resulted in an optimal maintenance interval in the range of 230–245 hours, when reliability remains above 90% and availability is around 96%.
Co-Authors Abdurahim Sidiq Abdurrahim sidiq Adawiyah, Robiyatul Agus Wiramsya Oscar Ahmad, Rizky Yanuar Akhmad, Rizky Yanuar Alfian Nor Ayu Novia Lisdawati Cinthia Amalia Dyah Sri Wulandari Faisal Rahman Faisal Rahman, Faisal Firda Herlina Fitriyani, Nanda Hidayati, Tazkia Hidayati, Tazkia Nor Idzani Muttaqin Irawan Noor Irfan Irfan Jainal Arifin Moethia Faridha Mokhamad Ramdhani Raharjo Muhammad Hazairin Muhammad Marsudi Muhammad Saukani Mujiburahman Mujiburrahman . Nanda Fitriyani Rais Mu'ammar Rais Muammar Ramadhan, Muhammad Ashri Rendi Rendi Rizky Yanuar Akhmad Robiatul Adawiah Rukun Setyono Saifullah Arief Sidiq, Abdurrahim Yassyir Maulana Yuli Panca Yumi Damai Yanti