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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Lubis, Zulyaden
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Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Strategi Pemeliharaan Untuk Meningkatkan Efektivitas Mesin Ripple Mill Dengan Pendekatan Keefektifan Peralatan Manullang, Raymond; Lubis, Zulyaden; Raja, Pada Mulia
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.243

Abstract

This study aims to analyze the operational effectiveness of the Ripple Mill machine using a TPM maintenance strategy approach by measuring OEE. The method used is descriptive quantitative, with primary data from observations and interviews, and secondary data from factory operational documentation. The evaluation was based on three leading OEE indicators: availability, performance, and quality. It was complemented by an analysis of the six significant losses to identify sources of lost production time. The results show that the average OEE value from January to March 2025 reached 96.53%, exceeding the international standard of ≥85%. The most significant losses came from equipment breakdowns (69.75%), followed by minor breakdowns and idling (18.48%). Preventive maintenance programs, operator training, and spare parts availability are recommended. These results demonstrate the effectiveness of the TPM approach in continuously improving machine performance.
Analisis Kelayakan Tangki Timbun CPO Kapasitas 500 dan 1000 Ton Berdasarkan Ketebalan Roundshell, Suhu, dan Tekanan Hidrostatis Raja, Pada Mulia; Mahyunis, Mahyunis; Istiadzah, Tiara Briliani; Zakwan, Zakwan; Winardi, Rafeal Remit; Rahimah, Rahimah; Lubis, Zulyaden
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.278

Abstract

This study aims to determine the feasibility of using 500-ton and 1000-ton Crude Palm Oil (CPO) storage tanks in a palm oil mill. The evaluation is based on the roundshell thickness, operating temperature, and hydrostatic pressure acting on the tanks. A descriptive quantitative method was applied using primary and secondary data from PMKS Simpang Gambir. The results showed that for the 500-ton tank, the calculated roundshell thickness is 8.6 mm, the actual is 8.87 mm, and the design is 9 mm, with a hydrostatic pressure of 5.73 Pa. For the 1000-ton tank, the calculated thickness is 13.1 mm, the actual thickness is 13.8 mm, and the design thickness is 14 mm, with a hydrostatic pressure of 11.46 Pa. The corrosion rates are 0.00072 mm/month and 0.0011 mm/month, respectively. Based on the analysis, the 500-ton tank is feasible for continued use for approximately 31 years, and the 1000-ton tank for 53 years, assuming constant corrosion rates.
Co-Authors Istiadzah, Tiara Briliani Mahyunis Manullang, Raymond Pada Mulia Raja Rahimah, Rahimah Winardi, Rafeal Remit Zakwan, Zakwan