Analisis Efisiensi Gear Pump untuk Proses Pelumasan dari Reservoar Tank Menuju Upper Guide Bearing Turbin di Lantai B3 PT PLN Nusantara Power PLTA Sutami

Fhadila, Yeyen Nur (2025) Analisis Efisiensi Gear Pump untuk Proses Pelumasan dari Reservoar Tank Menuju Upper Guide Bearing Turbin di Lantai B3 PT PLN Nusantara Power PLTA Sutami. Project Report. [s.n.]. (Unpublished)

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Abstract

Keandalan operasional pembangkit listrik sangat bergantung pada pemeliharaan komponen utama, salah satunya adalah sistem pelumasan turbin. Tujuan utama dari penelitian ini adalah untuk menganalisis efisiensi pompa roda gigi (gear pump) yang digunakan dalam proses pelumasan turbin dari reservoar tank menuju upper guide bearing di lantai B3 PLTA Sutami. Metode penyelesaian masalah mencakup studi literatur, pengumpulan data teknis komponen pompa dan perpipaan, pengolahan data kerugian head (head loss) dinamis, Water Horse Power (WHP), serta Brake Horse Power (BHP). Berdasarkan hasil perhitungan teoritis, pompa dengan kapasitas 60 liter/menit yang menggunakan pelumas Mobil DTE Oil Heavy Medium ini memiliki tingkat efisiensi sebesar 51%. Nilai ini menunjukkan bahwa 51% daya mekanik motor berhasil diubah menjadi energi hidrolik, sementara 49% lainnya hilang akibat gesekan internal dan panas. Efisiensi ini berada di bawah standar industri modern untuk pompa roda gigi yang umumnya berkisar antara 70%-90%, mengindikasikan bahwa pompa beroperasi kurang optimal. Rekomendasi perbaikan mencakup implementasi pemantauan aliran secara real-time, pengukuran tekanan berkala, serta pemeriksaan komponen internal pompa untuk mendeteksi potensi keausan yang dapat menurunkan efisiensi sistem pelumasan secara keseluruhan. ================================================================================================================================
The operational reliability of the power plant heavily relies on the maintenance of key components, particularly the turbine lubrication system. The main objective of this study is to analyze the efficiency of the gear pump used in the turbine lubrication process from the reservoir tank to the upper guide bearing on the B3 floor of PLTA Sutami. The methodology involves literature study, technical data collection of the pump and piping components, and calculating dynamic head losses, Water Horse Power (WHP), and Brake Horse Power (BHP). Based on theoretical calculations, the pump, which has a capacity of 60 liters/minute and uses Mobil DTE Oil Heavy Medium, operates at an efficiency of 51%. This value indicates that 51% of the motor's mechanical power is successfully converted into hydraulic energy, while the remaining 49% is lost due to internal friction and heat. This efficiency falls below the modern industry standard for gear pumps of 70%-90%, indicating suboptimal performance. Recommendations for improvement include the implementation of real-time flow monitoring, regular pressure measurements, and thorough inspections of internal pump components to detect potential wear that could degrade the overall efficiency of the lubrication system.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Efisiensi Pompa, Pompa Roda Gigi, Sistem Pelumasan, Turbin, Pembangkit Listrik Tenaga Air (PLTA) Pump Efficiency, Gear Pump, Lubrication System, Turbine, Hydroelectric Power Plant
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ164 Power plants--Design and construction T Technology > TJ Mechanical engineering and machinery > TJ174 Maintenance and repair of machinery
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Yeyen Nur Fhadila
Date Deposited:	07 Jul 2026 06:41
Last Modified:	07 Jul 2026 06:41
URI:	http://repository.its.ac.id/id/eprint/134374

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