Studi Kasus Inspeksi 4000 Jam pada Mesin Instrument Air Compressor (IAC) Atlas Copco ZR 75 Unit 2 di PT PLN Indonesia Power UBP Suralaya
DOI:
https://doi.org/10.58466/9245b115Kata Kunci:
Inspeksi 4000 jam, Atlas Copco ZR 75, Instrument Air Compressor, Condition MonitoringAbstrak
Abstrak
Inspeksi berkala pada Instrument Air Compressor (IAC) berperan penting dalam menjaga kelancaran operasi pembangkit listrik. Penelitian ini mengevaluasi hasil inspeksi pada 4.000 jam operasi unit Atlas Copco ZR 75 di PT PLN Indonesia Power UBP Suralaya. Metode yang digunakan meliputi inspeksi visual, pemantauan parameter proses (tekanan, temperatur, aliran), analisis getaran, serta pemeriksaan kondisi pelumas. Hasil penelitian menunjukkan adanya penurunan efisiensi volumetrik akibat kenaikan diferensial tekanan pada filter, indikasi keausan bantalan, dan kontaminasi oli di atas ambang batas pabrikan. Rekomendasi utama adalah penggantian elemen filtrasi, pembersihan jalur intake, dan pemeriksaan bantalan. Penggabungan inspeksi berkala dengan pemantauan kondisi terbukti meningkatkan efektivitas pemeliharaan dan menekan risiko downtime.
Kata kunci: Inspeksi 4000 jam, Atlas Copco ZR 75, Instrument Air Compressor, Condition Monitoring
Abstract
Periodic inspection of the Instrument Air Compressor (IAC) plays a crucial role in ensuring the smooth operation of power plants. This study evaluates the results of a 4,000-hour inspection of the Atlas Copco ZR 75 unit at PT PLN Indonesia Power UBP Suralaya. The methods used include visual inspection, process parameter monitoring (pressure, temperature, and flow), vibration analysis, and lubricant condition assessment. The findings indicate a decrease in volumetric efficiency due to increased differential pressure across the filters, bearing wear indications, and oil contamination exceeding the manufacturer’s threshold. The main recommendations are to replace filtration elements, clean the intake line, and inspect the bearings. The integration of periodic inspection with condition monitoring has proven effective in improving maintenance performance and minimizing downtime risk.
Keywords: 4000-hour inspection, Atlas Copco ZR 75, instrument air compressor, condition monitoring
Referensi
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