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USULAN WAKTU PERAWATAN DAN PERBAIKAN BERDASARKAN KEANDALAN PADA BAGIAN BOILER DI PEMBANGKIT LISTRIK TENAGA UAP Pamungkas, Iing; Irawan, Heri Tri; Arhami, Arhami; Dirhamsyah, Muhammad
Jurnal Optimalisasi Vol 5, No 2 (2019): Oktober
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jopt.v5i2.1255

Abstract

PT. PLN (Persero) is the sole manager of the electricity industry in Indonesia which is owned by the Indonesian government in the form of a State-Owned Enterprise. Steam power plant is one of the leading power plants in Indonesia. Aceh Province has one steam power plant located in Nagan Raya Regency and has two generating units with an installed capacity of 2x110 Megawatts. However, a power outage is unavoidable and still often occurs if one of the plants is damaged or damaged. Corrective maintenance activities and overall maintenance is one of the causes of the high frequency of interference or damage, especially in the boiler section. This study aims to determine the proposed maintenance and repair time to achieve a reliability level of up to 80% in every important boiler component. The proposed maintenance and repair time can be obtained based on historical time to failure and time to repair data. Good maintenance and repair time can be assessed based on high reliability values. The results obtained that the proposed maintenance time is 67 hours to 585 hours to achieve 80% reliability value on eight important components in the boiler section. While the proposed repair time is from 1,036 hours to 1,497 hours to reach 80% reliability value on eight important components in the boiler section.
Penjadwalan Produksi Paving Block Pada CV. Nibo Corporation Banda Aceh Irawan, Heri Tri; Pamungkas, Iing; Arhami, Arhami
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.v6i1.2063

Abstract

This paper uses the Palmer method to schedule paving block production in CV. Nibo Corporation Banda Aceh. CV. Nibo Corporation is engaged in the production of paving blocks located in the city of Banda Aceh. Problems faced by CV. Nibo Corporation often produces excess paving blocks than the number of orders that results in product accumulation in the storage area. The purpose of this study is to schedule paving block production in CV. Nibo Corporation. Paving block production scheduling in CV. Nibo Corporation will use the Palmer method. This research begins by calculating each standard time for each job. From the scheduling results, the comparison between the initial factory work schedule is nine hours of work in one day, and twenty-four working days in a month. While scheduling using the palmer method is six hours of work in one day and twenty-four working days in a month, or nine hours of work in one work day and seventeen days in a month. Using the palmer method can reduce the difference in production and orders every month from 31.000 to 5.944, or 3.000 per month, thereby reducing the accumulation of paving block products.