Laporan Magang di PT GeoDipa Energi (Persero) Unit Dieng

Fajriaa, Bintang Nur (2026) Laporan Magang di PT GeoDipa Energi (Persero) Unit Dieng. Project Report. [s.n.]. (Unpublished)

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Abstract

Fluida brine pada PT Geo Dipa Energi Unit Dieng memiliki kandungan silika yang tinggi, yaitu sekitar 846 ppm, sehingga berpotensi menyebabkan pembentukan scaling pada sistem perpipaan. Penelitian ini bertujuan untuk menganalisis pengaruh temperatur terhadap pembentukan scaling silika serta menentukan estimasi waktu predictive maintenance berdasarkan ketebalan scaling. Metode yang digunakan meliputi perhitungan kelarutan silika, jumlah silika yang mengendap, hingga laju pembentukan scaling / scaling rate berdasarkan data temperatur, konsentrasi silika, laju alir fluida, dan dimensi pipa. Hasil perhitungan menunjukkan bahwa penurunan temperatur menyebabkan penurunan kelarutan silika sehingga meningkatkan jumlah silika yang mengendap. Laju pembentukan scaling diperoleh sebesar 0,432 mm/hari atau setara dengan 15,77 cm/tahun. Berdasarkan hasil tersebut, ketebalan scaling diperkirakan mencapai batas aman sebesar 8 cm pada sekitar 186 hari operasi. Hasil penelitian ini menunjukkan bahwa laju pertumbuhan scaling dapat digunakan sebagai dasar dalam penentuan jadwal predictive maintenance untuk menjaga keandalan sistem perpipaan dan mencegah gangguan operasional.
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Brine fluid at PT Geo Dipa Energi Dieng Unit contains a high silica concentration of approximately 846 ppm, making it susceptible to silica scale formation within the piping system. This study aims to analyze the effect of temperature on silica scale formation and to estimate the predictive maintenance interval based on the thickness of the accumulated scale. The research methodology includes calculations of silica solubility, the amount of precipitated silica, and the silica scaling rate using temperature data, silica concentration, fluid flow rate, and pipe dimensions. The results indicate that a decrease in temperature reduces silica solubility, thereby increasing the amount of precipitated silica. The calculated scaling rate was 0.432 mm/day, equivalent to 15.77 cm/year. Based on this rate, the silica scale thickness is estimated to reach the allowable limit of 8 cm after approximately 186 days of operation. These findings demonstrate that the silica scaling rate can serve as a basis for determining predictive maintenance schedules to maintain piping system reliability and prevent operational disruptions.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Scaling, Silika, Brine Line, Predictive Maintenance, Temperatur
Subjects:	T Technology > T Technology (General) > T174.5 Technology--Risk assessment. T Technology > T Technology (General) > T55.3.H3 Hazardous substances--Safety measures. T Technology > T Technology (General) > T55 Industrial Safety T Technology > T Technology (General) > T57.5 Data Processing T Technology > TA Engineering (General). Civil engineering (General) > TA169.5 Failure analysis T Technology > TJ Mechanical engineering and machinery > TJ217.6 Predictive Control T Technology > TJ Mechanical engineering and machinery > TJ930 Pipelines (General). Underwater pipelines.
Divisions:	Faculty of Vocational > Instrumentation Engineering
Depositing User:	Bintang Nur Fajriana
Date Deposited:	31 Jul 2026 01:57
Last Modified:	31 Jul 2026 01:57
URI:	http://repository.its.ac.id/id/eprint/141307

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