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IMPLEMENTASI FISHBONE DIAGRAM DALAM ANALISIS BREAKDOWN DIVISI MAINTENANCE LISTRIK PADA PRODUKSI BAJA DI PT. X Muzakki, Rizdam Firly; Nuralam, Nuralam; Kusumastuti, Sri Lestari
Jurnal Inkofar Vol 9, No 1 (2025)
Publisher : Politeknik META Industri Cikarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46846/jurnalinkofar.v9i1.422

Abstract

Breakdown produksi merupakan salah satu peristiwa yang harus diminimalisir, bahkan dieliminasi pada setiap proses produksi di sektor industri. PT. X sebagai salah satu produsen baja nasional juga berupaya untuk mengoptimalkan proses produksi, mengingat modal yang dibutuhkan untuk memproduksi baja memiliki nilai yang relatif tinggi. Breakdown produksi perlu dianalisis dengan baik untuk mendapat solusi yang tepat dan akurat. Salah satu alat yang dapat digunakan adalah fishbone diagram. Berdasarkan data yang diperoleh diketahui dua kendala yang paling dominan terjadi selama periode Desember – Mei terjadi pada area Crop Shear (21%) dan Flying Shear (19%). Adapun pada area Crop Shear diketahui motor trip akibat terindikasi overspeed, sedangkan pada area Flying Shear motor bekerja abnormal akibat ada indikasi pompa oli yang mati. Tindakan perawatan dan perbaikan lalu dirancang berdasarkan hasil analisis yang didapat, yaitu penggantian parameter kerja motor Crop Shear, dan penggantian kabel indikator oil flow untuk motor Flying Shear. Hal ini perlu direalisasikan untuk mengantisipasi hal semula terjadi di masa mendatang melalui corrective dan preventive maintenance.Kata kunci: industri baja, diagram tulang ikan, diagram pareto, perawatan
Implementasi Sistem Monitoring Pertumbuhan Tanaman Hidroponik Berbasis Sensor Konduktivitas dan LabVIEW Nuralam, Nuralam; Muzakki, Rizdam Firly; Kusumastuti, Sri Lestari; Hariyanto, Hariyanto
Jurnal Kridatama Sains dan Teknologi Vol 7 No 02 (2025): Jurnal Kridatama Sains dan Teknologi
Publisher : Universitas Ma'arif Nahdlatul Ulama Kebumen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53863/kst.v7i02.1787

Abstract

This community service project is an implementation of research findings. Hydroponic farming offers an innovative solution to land scarcity and soil degradation in urban areas. Its success heavily depends on the management of nutrient solution quality, particularly in terms of electrical conductivity (EC) and temperature. In the local hydroponic farm, residents were still using manual methods that are inaccurate and lack data logging capabilities. Therefore, an EC and temperature sensor-based monitoring system integrated with LabVIEW was developed. The system is designed to provide real-time readings, color-coded visual indicators, and automatic data logging. Testing was conducted over six days at a lettuce hydroponic installation, yielding an average EC deviation of 3.2% compared to a reference device. The measured temperature range remained within the ideal range (26.1–28.3°C). The system operated stably with a 1-second reading interval, low power consumption, and compatibility with local conditions. Positive user feedback highlighted its ease of use and practical benefits in plant maintenance decision-making. Through this appropriate technology approach, the system has the potential to serve as a model for smart household-scale agricultural development in urban areas
Voltage THD Analysis on the Use of DC Motors in Steel Milling Process Muzakki, Rizdam Firly; Irianto, Chairul Gagarin
Jurnal Edukasi Elektro Vol. 7 No. 1 (2023): Jurnal Edukasi Elektro, Volume 7, Nomor 1, 2023
Publisher : DPTE FT UNY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jee.v7i1.59289

Abstract

A milling process utilize DC motors and rectifier circuits. Semiconductor components in the rectifier circuit could cause harmonic distortion. At PT X, the voltage THD generated at the 6KV feeder panel has exceeded the standards set by the IEEE. This study aims to analyze the voltage THD caused by a controlled rectifier circuit and DC motors, and to design a filter to mitigate it. MATLAB software is used to analyze the THD voltage. From the simulation results, it is known that the 400KW, 450KW, and 600KW DC motors produce voltage THD values of 9.35%, 14.23%, and 12.28% respectively which exceed the set standards of 8%. A single-tuned passive filter is designed to reduce the THD voltage value on each motor. The installation of the filter effectively reduces the THD voltage value in the 400KW, 450KW, and 600KW DC motors to 4.34%, 5.38%, and 6.35% respectively.