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All Journal Mechatronics, Electrical Power, and Vehicular Technology Rekayasa Mesin JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Mesin Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Melodious : Journal of Music
I Wayan Suweca
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Bangka Belitung
Aerospace Engineering Arts Humanities Automotive Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Journal : Rekayasa Mesin

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ANALYSIS OF SPARE PARTS REQUIREMENTS BASED ON THE FAILURE RATE OF A COMPONENT USING THE POISSON PROCESS METHOD IN A CASE STUDY AT PT. XYZ Tamitakarza, Herdi; Ferryanto, Ferryanto; Suweca, I Wayan
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i2.1849

Abstract

This study presents the conclusions drawn from previous data analysis, highlighting several significant key findings. Firstly, an evaluation using a risk matrix revealed that the critical subsystem for the CC 206 Locomotive is the Diesel subsystem, which consists of four important spare part components: The respective MTTF values for the Injector Nozzle, Inverter, Seal Output, and Retainer are 29.292 hours, 18.943,1 hours, 13.442,1 hours, and 26.318,1 hours. Furthermore, the annual requirements for these components were calculated using a Poisson process based on their respective MTTF values. These findings provide valuable insights into the importance of these components and their annual requirements, which in turn will significantly contribute to the efficient maintenance and operation of the CC 206 locomotive. It is estimated that the annual requirements for these components are 21 units for the injector nozzle, 31 units for the inverter, 42 units for the seal output, and 23 units for the retainer. This study proposes a novel application of the Poisson process to estimate the annual requirement of spare parts based on actual component failure rates and their corresponding MTTF. The method offers the advantage of being data-driven, probabilistic, and suitable for systems with constant failure rates, making it highly effective for optimizing inventory levels in railway maintenance. This research provides a new insight into quantitative spare part planning that improves reliability-based inventory strategies in Indonesian railway operations.
USULAN KEBIJAKAN PEMERIKSAAN PADA GARDU TRAKSI LRT PALEMBANG BERDASARKAN ANALISIS NILAI KEANDALAN DAN KETERSEDIAAN Putra, Chandra Dwi; Virdyawan , Vani; Rachmilda , Tri Desmana; Suweca, I Wayan
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1853

Abstract

The Palembang LRT, the first light rail transportation system in Indonesia, operates at the traction substation. This research aims to propose an optimal inspection policy based on reliability and availability values. The study found that the reliability of the 750 V output DC cubicle sub-equipment is 84.01%, the feeder is 97.22%, the MV switchgear 20 kV AC is 98.60%, and the power supply controller (SCADA) is 94.04%. The availability value of the 750 V output DC cubicle sub-equipment is 99.99%, the feeder is 99.98%, the MV switchgear 20 kV AC is 99.99%, and the SCADA is 99.97%. The inspection time interval with a reliability target of 90% for the 750 V output DC cubicle sub-equipment is 181 hours, with the feeder sub-equipment having intervals of 1256 hours, MV switchgear 20 kV AC sub-equipment every 2513 hours, and the SCADA sub-equipment every 599 hours.
Co-Authors Aryanto, Agustinus Sani Bagus Budiwantoro Dewanta, Gabriel Setia Djoeli Satrijo Eko Cahyono, Eko Ferryanto Ferryanto Firlya Rosa Gatot Santoso Handoko, Yunendar Aryo Harsokoesoemo, Darmawan Hernansjah, Hernansjah Ketut Sumerjana, Ketut Mardiyati, Yati Mehan, Reldegundis Yemina Mitak, Louise Marie Grignion de Monfort Moelyadi, Mochammad Agoes Priyono Sutikno, Priyono Pusung, Juaniken Rachel Emmanuella Putra, Chandra Dwi Rachmat, Angki Apriliandi Rachmilda , Tri Desmana Ramadhan, Muhammad Hisyam Ricky Irawan Sibuea, Roby C. M Soemantri B, Satryo Soemantri, Satryo Sufyani, Rosyidin Suhariyono Suhariyono, Suhariyono Sujatmika, Endra Tamitakarza, Herdi Tatacipta Dirgantara, Tatacipta Taufani, Soni Virdyawan , Vani Wicaksana, I Putu Adi Wardana Wiyati, Wahyu Sri Yusran, Yasser Yusuf, Mokhamad Nuriman