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All Journal SALTeL Journal (Southeast Asia Language Teaching and Learning) Jurnal Optimalisasi Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar Marine Kreatif JOURNAL OF LANGUAGE KATALIS: Jurnal Penelitian Kimia dan Pendidikan Kimia Register : Journal of English Language Teaching and Learning of FBS UNIMED Jurnal Cakrawala Ilmiah JASL - Journal of Applied Studies in Language Transform : Journal of English Language Teaching and Learning Indo-Fintech Intellectuals: Journal of Economics and Business Indonesian Journal of Education and Development Research Journal of Multidisciplinary Inquiry in Science, Technology and Educational Research Journal of Humanities Education Management Accounting and Transportation Journal of Citizen Research and Development
Hartati, Rita
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Journal : Jurnal Optimalisasi

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Evaluasi Interval Penggantian Preventif pada Komponen Kritis Screw Conditioner Adib, Adib; Pandria, T.M Azis; Hartati, Rita
Jurnal Optimalisasi Vol 6, No 1 (2020): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v6i1.1934

Abstract

This research is propose the replacement schedule of a critical part of a critical machine in a the clove line of PT. Hanjaya Mandala Sampoerna Tbk. From the direct observation, the screw conditioning process is the critical process of the the tobacco production in clove line. One of the screw conditioner, Garbuio Dickinson screw conditioner, was observed as the machine with the most downtime in clove line. Further analysis using chart reveals that the motor screw conditioner is the main problem to the machine breakdown. Index of fit calculations were applied to find the time to failure and time to repair distribution by looking at the highest index of fit of each failure distribution. Maximum Likelihood Estimator step was undergone to find the MTTF and MTTR (in hours) for the chosen distribution. Finally, the best time interval to replace the critical part in order to increase the component reliability and machine availability was calculated. Result of this preventive replacement is increases the component reliability by 80% and the machine availability by 0.245%.
Efektifitas Kinerja Produksi Air Bersih pada Perusahaan Daerah Air Minum (PDAM) XYZ Menggunakan Metode Objective Matrix (OMAX) Marlinda, Marlinda; Hartati, Rita; Hidjrawan, Yusi
Jurnal Optimalisasi Vol 11, No 1 (2025): April
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v11i1.11861

Abstract

This study aims to determine the performance of clean water production at PDAM XYZ. The method used is the Objective Matrix (OMAX). In the formation of the Omax matrix, values are required in the form of actual values, actual scores, productivity values, and descriptions of each ratio. The results of the study show that the Overall Productivity (OP) value shows that the productivity of the XYZ Regional Drinking Water Company (PDAM) in producing clean water as a whole from 2021 to 2024 has increased and decreased. The highest Overall Productivity (OP) value is in 2022 at 601, where overall the actual score for each ratio is not included in the bad category. The lowest Overall Productivity (OP) value is in 2023, this is because in 2023 for ratio 6, namely about effectiveness, which has an actual score of only 1, it is included in the bad category. After experiencing a decline in productivity, in 2024 the company's overall productivity value increased again. So it can be concluded that the best performance and productivity that occurred during 2021 to 2024 was in 2022, this can be seen from the overall productivity value in 2022 which was 601. Meanwhile, the worst performance and productivity occurred in 2023, this can be seen from the very low overall productivity value in 2023, which was only 388.
Co-Authors Adib Adib, Adib Al Munawir Albert Hezekiah Sanolo Zebua Ali, Sulaiman Alvina, Sirry Amanda Sabrina, Nabilah Amri, Muhammad Agri Anayati, Wan Andrean Mardohar Sitanggang, Joys dian febrianti Endah Anisa Rahma, Endah Anisa Farizal, Teuku Hayatun Nufus Hidjrawan, Yusi Hutabalian, Ristama Hutapea, Elizabeth Hutauruk, Yesi Atania Imanda, Riska Khairul Hadi Majid Wajdi Marlinda Marlinda Matsom, Hafizan Meisuri Meylis Safriani Naibaho, Sriwi Anceli Njue Steeven Tarigan Panah, Ebrahim Pardede, Tama Riska Pratiwy, Devi Rossi, Muhammad Abiyyu De Setiawaty, Sri Sianipar, Stefanny Romauli Sihite, Sepania Handayani Br Simbolon, Amelia Agnes Siregar, Permata Surya T. M. Azis Pandria Triana, May Devi Veni Nella Syahputri, Veni Nella Yasrizal Yusi Hidjrawan