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All Journal MODUL JMARS: Jurnal Mosaik Arsitektur Jurnal Optimasi Sistem Industri PROZIMA (Productivity, Optimization and Manufacturing System Engineering) Jurnal SOLMA LANGKAU BETANG: JURNAL ARSITEKTUR JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat INTEGRITAS : Jurnal Pengabdian Spektrum Sipil JURMATIS : Jurnal Manajemen Teknologi dan Teknik Industri Jurnal Sains, Teknologi, Urban, Perancangan, Arsitektur (Stupa) IJEAS (International Journal of Environment, Architecture, and Societies) Peka: Jurnal Pengabdian Kepada Masyarakat Jurnal Abdimas Musi Charitas Jurnal Pengabdian Masyarakat dan Inovasi Teknologi JKMP (Jurnal Kebijakan dan Manajemen Publik) Jurnal Pengabdian Masyarakat dan aplikasi Teknologi Spektrum Industri
Ivan Gunawan
Program Studi Arsitektur Fakultas Teknik Universitas Tanjungpura
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Journal : Jurnal Optimasi Sistem Industri

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A Hybrid Simulation Study to Determine an Optimal Maintenance Strategy Ig. Jaka; Gunawan, Ivan; Angelia, Yunia Vera; Trihastuti, Dian
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in October 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v19.n2.p91-100.2020

Abstract

With the increasing complexity of the process industry, having excellent maintenance management is essential for manufacturing industries. Various parts that interact and interdependent with each other make a well-planned maintenance strategy is one of the major challenges facing by industry. The whole system could be interrupted just simply because of the failure of a component. Therefore, a review of a maintenance strategy must be done from a system perspective. It is suggested that the optimal preventive maintenance time interval is not only determined by the lowest maintenance cost of each machine but also its impact on the whole system. Two main indicators that can accommodate the system perspective are reliability and revenue. A large number of machines and the array of machines can be synthesized in the reliability indicator. Moreover, the creation of maximum revenue is always the main goal for a business. The best maintenance strategy will be determined from the revenue obtained by a process industry. The process industry discussed in this study is a flour mill which is very well known in Surabaya. This study applied a hybrid simulation to solve this problem. Monte Carlo simulation was used to observe the machine individually and the results are reviewed using the application of System Dynamics. Three improvement scenarios were proposed in this simulation study. Scenario 2 was chosen as the best scenario because it was able to generate the highest revenue at the end of the period. Scenario 2 recommends setting the preventive maintenance time interval considering resource availability.
Recycling Solid Waste of Coconut Oil Industry: A Response Surface-Goal Programming Approach Sirodj, Dwi Agustin Nuriani; Gunawan, Ivan
Jurnal Optimasi Sistem Industri Vol. 19 No. 2 (2020): Published in October 2020
Publisher : The Industrial Engineering Department of Engineering Faculty at Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/josi.v19.n2.p111-121.2020

Abstract

Waste minimization is a key success factor to achieve sustainability, including in the edible oil industry. One type of solid waste produced substantially in this industry is spent bleaching earth (SBE), which comes from a mixture of bleaching earth (BE) and activated carbon (CA) used in the edible oil refining process. SBE that is recycled through a heating process is known as heat regenerated SBE (HRSBE). The process is influenced by two factors as stated in previous studies: temperature and time. In the current study, we report the results of experiments to find the optimal combination of temperature and time in restoring the absorbent quality of SBE by observing four quality parameters: colors (red and yellow), Free Fatty Acid (FFA), and Peroxide Value (PV). The current study uses Response Surface Methodology (RSM) to design the experiments and to find the equations of the relationship between the factors for each response; as well as Goal Programming (GP) to find the most optimal combination of factors in order to achieve aggregated quality targets. The findings show that 3.414 hours of heating at a temperature of 151.64oC allow HRSBE to produce coconut oil in accordance with the expected quality targets.
Co-Authors Adriana Anteng Anggorowati Aldri Frinaldi Alfan Rosyid, Mochamad Amin, Faris Muslihul Andi Andi Andrew Joewono, Andrew Angelia, Yunia Vera Buan Anshari Chatarina Dian Indrawati Dian Retno Sari Dewi Dian Trihastuti Diyah Tulipa Dwi Agustin Nuriani Sirodj Dwi, Ryan Dwi, Yanuar Dyna Rachmawati Dzikri Prakasa Putra, Dzikri Prakasa Godelva, Ivena Gultom, Bontor Jumaylinda Br. Gunadhi, Albert Hadi Santoso Hana Catur Wahyuni Herwinarso . Ig. Jaka Ig. Jaka Mulyana Jaka Mulyana, Ignasius Julius Mulyono Karijadi, Irene Khalid Khangara, Stephanie Gracia Lestariningsih, Diana Martinus Edy Sianto Muhammad Ridha Alhamdani Mustikawati Mustikawati Novaldo, Adrianus Permata Sari Hartanti, Lusia Pradana, Johan Alfian Pranjoto, Hartono Purnomo, Rochmat Aldy Rahma, Charisma Robik Anwar Dani Sabrina, Bilqis Santosa, Hadi Sianto, Martinus Edy Solikhah, Nafiah Sri Hartono, Sri Sugiartha, I Wayan Suseno, Thomas Putut Indarto Tieman, Marco Tri, Feliana Wahyudi Wibowo Wery Indrawan, Wery Yenny Lukman Yudi Purnomo Yuliati - Yustinus Budi Hermanto