Prediksi Waktu Shutdown Secondary Sizer Menggunakan Power Law Process

Yudistira, Adityo (2024) Prediksi Waktu Shutdown Secondary Sizer Menggunakan Power Law Process. Masters thesis, Institut Teknologi Sepuluh November.

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Abstract

Pada industri pertambangan batubara, secondary sizer adalah komponen krusial dalam fixed processing plant. Kegagalan pada komponen ini dapat menyebabkan downtime yang signifikan, mengakibatkan kerugian finansial dan penurunan produktivitas. Penelitian ini bertujuan mengembangkan model prediksi waktu shutdown penggantian secondary sizer menggunakan pendekatan Power Law Process (PLP) karena mesin yang diamati dapat diperbaiki dan kemungkinan besar laju kerusakannya akan meningkat seiring dengan berjalannya waktu. Hasil penelitian menunjukkan bahwa Secondary Sizer 01 mengalami kerusakan lebih cepat dibandingkan Secondary Sizer 02. Strategi shutdown yang optimum berdasarkan PLP adalah saat mesin mencapai 28276 jam operasional atau kerusakan ke-13, mana yang lebih dulu terjadi. Biaya minimum akibat kerusakan dengan strategi ini adalah 0,7893 USD per jam operasional, dengan total biaya 15.786 USD per siklus rata-rata penggantian komponen 20.000 jam operasional. Implementasi strategi ini mengurangi biaya sebesar 30,03% dibandingkan dengan kebijakan saat ini dilakukan. Penelitian ini juga mengubah alur proses bisnis, membantu planner menyiapkan suku cadang lebih cepat dan efektif biaya, serta memastikan perbaikan dilakukan tepat waktu. Selain itu, disarankan adanya program pelatihan untuk meningkatkan kualitas maintenance, dengan knowledge sharing internal untuk kompetensi diatas 50% dan pelatihan eksternal untuk kompetensi dibawah 50%, yang secara keseluruhan akan meningkatkan efisiensi dan menurunkan biaya maintenance.
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In the coal mining industry, the secondary sizer is a crucial component of the fixed processing plant. Failure of this component can cause significant downtime, resulting in financial losses and decreased productivity. This research aims to develop a model to predict the shutdown time for the replacement of the secondary sizer using the Power Law Process (PLP) approach, as the observed machines are repairable and likely to experience an increasing failure rate over time. The results show that Secondary Sizer 01 fails faster than Secondary Sizer 02. The optimal shutdown strategy based on the PLP is when the machine reaches 28276 operational hours or the thirteen failure, whichever comes first. The minimum cost of failure with this strategy is 0,7893 USD per operational hour, with a total cost of 15.786 USD per average replacement cycle of 20,000 operational hours. Implementing this strategy reduces costs by 30,03% compared to the current policy. This research also modifies the business process flow, helping planners prepare spare parts more quickly and cost-effectively, and ensuring timely repairs. Additionally, it is recommended to have a training program to improve maintenance quality, with internal knowledge sharing for competencies above 50% and external training for competencies below 50%, which will overall enhance efficiency and reduce maintenance costs.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Prediksi Waktu Shutdown, Secondary Sizer, Power Law Process, Manajemen Maintenance, Program Pelatihan, Shutdown Time Prediction, Secondary Sizer, Power Law Process, Maintenance Management, Training Program.
Subjects:	Q Science > QA Mathematics > QA273.6 Weibull distribution. Logistic distribution. T Technology > TJ Mechanical engineering and machinery > TJ174 Maintenance and repair of machinery T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering)
Divisions:	Interdisciplinary School of Management and Technology (SIMT) > 61101-Master of Technology Management (MMT)
Depositing User:	Adityo Yudistira
Date Deposited:	01 Aug 2024 00:51
Last Modified:	30 Aug 2024 07:46
URI:	http://repository.its.ac.id/id/eprint/109512

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