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All Journal Journal of Mechanical Engineering Science and Technology International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Mohamad, Effendi Bin
Unknown Affiliation
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Turbine Engine Reliability Analysis Using Reliability Availability Maintainability (RAM) Novareza, Oyong; Darmawan, Zefry; Setyanto, Nasir Widha; Mohamad, Effendi Bin
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 8, No 2 (2024)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v8i22024p240

Abstract

Electrical energy is a vital necessity characterized by ever-increasing electricity consumption. The most dominating power plant in Indonesia in supplying electricity is the steam power plant, which is 50%. In its implementation, there is damage that occurs where the highest damage is to the general unit with the highest damage to the turbine unit. Therefore, the author uses the reliability, availability, and maintainability method or RAM. The purpose of this study is to determine the value of RAM on the turbine system at PLN and provide recommendations for improvements to system performance. The results showed that the MTTF and MTTR values of the components are 112,916 minutes and 7,705.91 minutes, respectively. The MTTF value of the equipment indicates in one year the shutdown occurs 4 to 5 times with a relatively short period of time to repair. RAM analysis is carried out and the value is 4.96% (reliability), 93.612% (availability), and 36.44% (maintainability). It can be interpreted that reliability of the system is low due to the frequency of errors, quite difficult to do a repair procedure, but the system is fairly working in good condition in a year period.
COMBINATION OF OEE AND FMEA METHODS TO ANALYZE THE EFFECTIVENESS OF PRODUCTION MACHINES Wardhani, Angelia Kusuma; Novareza, Oyong; Purnami, Purnami; Mohamad, Effendi Bin
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 2 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.02.1

Abstract

Maintenance concepts are required for equipment to maintain effectiveness and quality. One of the maintenance concepts offered is total productive maintenance which connects the synergy between all functions in the organization. In tpm, there is a method to calculate the value of machine effectiveness, namely the overall equipment effectiveness method. The purpose of oee itself is to maximize the output of the results of the available capacity. In this study aims to see the value of the effectiveness of existing machines in the production process. It was found that some OEE values were still below the JIPM level. JIPM itself is the OEE benchmark standard used by the world, jipm explains that the world standard for OEE is 85%.  Therefore, it is necessary to improve the maintenance system by using the TPM pillars of autonomous maintenance and training and education.
Co-Authors Nasir Widha Setyanto Oyong Novareza Purnami Purnami Wardhani, Angelia Kusuma Zefry Darmawan