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All Journal Rotasi Jurnal Rekayasa Mesin Journal Of Chemical Process Engineering (JCPE) Sebatik Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Polimesin
Arfan Halim
Perawatan Mesin, Politeknik Sinar Mas Berau Coal
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Journal : Sebatik

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ANALISIS PENGENDALIAN KUALITAS MENGGUNAKAN METODE SIX SIGMA DALAM MENINGKATKAN KINERJA OPERASIONAL DIVISI FIXED PLANT MAINTENANCE DI INDUSTRI PERTAMBANGAN PT BERAU COAL Ilmawan Suryapradana; Arfan Halim
Sebatik Vol 25 No 2 (2021): Desember 2021
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (604.291 KB) | DOI: 10.46984/sebatik.v25i2.1542

Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan efektivitas mesin coal crusher dengan menggunakan analisis deskriptif dan kuantitatif metode six sigma. Penggunaan Overall Equipment Effectiveness dan Six Big Losses untuk menentukan nilai Overall Equipment Effectiveness dan faktor dominan yang menyebabkan rendahnya kinerja mesin atau peralatan. Proses penerapan small group activity sebagai bagian dari Total Productive Maintenance dengan penerapan fase DMAIC dari analisis Overall Equipment Effectiveness (OEE), Six Big Losses, dan Fish Bone Diagram untuk menganalisa penyebab masalah yang menghambat kinerja mesin dan peralatan serta signifikansi peningkatan kinerja operasional di departemen FPM. Berdasarkan pengolahan data pada Coal Crusher dengan metode OEE dan Six Big Losses faktor yang paling dominan menyebabkan rendahnya kinerja mesin adalah Reduced Speed Losses dengan persentase 58,82% dan Equipment Failure Losses dengan persentase 62,21% pada mesin Coal Crusher yang mempengaruhi efektivitas dan produktivitas mesin tersebut. Menggunakan diagram pareto untuk menganalisis data losses yang ada sehingga akar permasalahan dapat ditemukan. Selanjutnya dengan analisis fish bone diagram didapatkan saran-saran langkah pencegahan dalam mengurangi jumlah losses time. Langkah perbaikan sistem yang dilakukan di Departemen FPM dengan penerapan Small Group Activity sebagai control secara berkelanjutan memberi peningkatan produktivitas terhadap kinerja Coal Crusher di akhir periode Desember 2020 yaitu diperoleh rata-rata nilai Overall Equipment Effectiveness (OEE) yaitu sebesar 87% dan telah memenuhi nilai standar dunia 85%. Dengan adanya peningkatan kinerja diharapkan kegiatan proses produksi dapat berjalan efektif, efisien, serta energi dapat digunakan secara optimal.
Analysis of Application of the Thermostat in the Cooling System of the Nissan CWB 45 Dump Truck Engine Suryapradana , Ilmawan; Halim, Arfan
Sebatik Vol. 28 No. 2 (2024): December 2024
Publisher : STMIK Widya Cipta Dharma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46984/sebatik.v28i2.2496

Abstract

The cooling system in vehicle engines ensures that the engine operates within an ideal temperature range, maintaining optimal performance. In the Nissan CWB 45 Dump Truck engine, the target coolant temperature ranges between 80°C and 90°C. This study evaluates the performance of the thermostat in the engine cooling system and its impact on engine temperature at varying engine speeds. Testing involved measuring the coolant temperature at engine speeds of 560 rpm, 1000 rpm, and 1500 rpm, with readings taken at intervals of 5, 10, and 15 minutes. The results indicated that at 1500 rpm, the coolant temperature reached 67.7°C after 15 minutes, which was insufficient to fully activate the thermostat. At 1000 rpm and 560 rpm, the temperatures were 61.7°C and 54.1°C, respectively, also below the thermostat activation threshold. These findings demonstrate that higher engine speeds result in faster temperature increases, enabling quicker thermostat activation. However, achieving the optimal temperature range requires improvements in the cooling system's design and component quality. This study provides valuable insights for enhancing the maintenance and performance of cooling systems in heavy vehicles, particularly those operating in demanding environments such as mining areas.
Co-Authors Akbar P. Gheitsa Z.S. Halim Halim Ilmawan Suryapradana Ilmawan Suryapradana Masnur Masnur Radear N.S. Reza Bachmid S, Dedy S, Ilmawan Sabdha Purna Yudha Sufriansyah, Dedy Suryapradana , Ilmawan Suryapradana, Ilmawan