Laporan Magang di PT. Pertamina Geothermal Energy Tbk. Area Karaha

Izzati, Muthia Nurul (2025) Laporan Magang di PT. Pertamina Geothermal Energy Tbk. Area Karaha. Project Report. [s.n.]. (Unpublished)

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Abstract

Kegiatan magang dilaksanakan di PT Pertamina Geothermal Energy Tbk. Area Karaha pada unit operasi Pembangkit Listrik Tenaga Panas Bumi (PLTP) yang memanfaatkan energi panas bumi sebagai sumber energi terbarukan. Tujuan pelaksanaan magang adalah memahami proses produksi listrik berbasis panas bumi secara langsung, menganalisis sistem keselamatan kerja melalui metode Hazard and Operability Study (HAZOP), menyusun neraca massa dan neraca energi pada unit proses utama, serta memberikan usulan penyelesaian terhadap permasalahan operasional melalui kegiatan troubleshooting. Selama kegiatan magang dilakukan pengamatan terhadap keseluruhan proses pembangkitan listrik, mulai dari pemisahan fluida panas bumi pada separator, pemurnian uap di scrubber, konversi energi pada turbin dan generator, hingga proses kondensasi, pendinginan, dan reinjeksi fluida ke dalam reservoir. Hasil kegiatan menunjukkan bahwa sistem operasi PLTP telah menerapkan pengendalian proses dan standar keselamatan kerja yang baik melalui penerapan HSSE, permit to work, serta identifikasi potensi bahaya menggunakan metode HAZOP pada peralatan utama. Selain itu, dilakukan penyusunan neraca massa dan neraca energi sebagai evaluasi kesetimbangan proses pada setiap unit operasi. Kegiatan troubleshooting difokuskan pada reaktivasi resin sistem demineralisasi menggunakan air kondensat HVAC sebagai sumber air umpan untuk meningkatkan kualitas air pendingin. Hasil evaluasi menunjukkan bahwa proses reaktivasi mampu menurunkan nilai konduktivitas air demineralisasi sehingga meningkatkan efektivitas kinerja resin dan mendukung keberlangsungan operasi sistem pendingin. Berdasarkan hasil analisis tersebut, diusulkan optimalisasi prosedur reaktivasi resin, pemantauan kualitas air secara berkala, serta pengendalian parameter operasi untuk meningkatkan efisiensi proses, keandalan sistem demineralisasi, dan mendukung keberlanjutan operasional PLTP.
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The internship was conducted at PT Pertamina Geothermal Energy Tbk. Area Karaha, a geothermal power plant (GPP) that utilizes geothermal energy as a renewable energy source for electricity generation. The objective of the internship was to gain a comprehensive understanding of the geothermal power generation process, analyze the occupational safety system using the Hazard and Operability Study (HAZOP) method, develop mass and energy balances for the main process units, and propose solutions to operational issues through troubleshooting activities. During the internship, direct observations were carried out on the entire electricity generation process, including geothermal fluid separation in the separator, steam purification in the scrubber, energy conversion in the turbine and generator, condensation, cooling, and fluid reinjection into the geothermal reservoir. The results indicated that the geothermal power plant had implemented effective process control and occupational health and safety management through the application of HSSE principles, permit-to-work systems, and hazard identification using the HAZOP method on major equipment. In addition, mass and energy balances were developed to evaluate process performance and material-energy conservation in each unit operation. The troubleshooting activity focused on the reactivation of the demineralization resin using HVAC condensate as the feed water source to improve cooling water quality. The evaluation demonstrated that the resin reactivation process successfully reduced the conductivity of demineralized water, thereby improving resin performance and supporting the reliability of the cooling system. Based on these findings, several recommendations were proposed, including optimization of the resin reactivation procedure, periodic monitoring of water quality, and improved control of operating parameters to enhance process efficiency, demineralization system reliability, and the long-term sustainability of geothermal power plant operations.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Demineralisasi, Demineralization, Energy balance, Geothermal energy, Geothermal Power Plant, Hazard and Operability Study, Mass balance, Neraca energi, Neraca massa, Panas bumi, Pembangkit Listrik Tenaga Panas Bumi, Resin reactivation, Reaktivasi resin, Troubleshooting.
Subjects:	T Technology > TP Chemical technology > TP155.5 Chemical plants--Design and construction T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP159.S4 Separators (Machine)
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering Technology
Depositing User:	Muthia Nurul Izzati
Date Deposited:	24 Jul 2026 04:15
Last Modified:	24 Jul 2026 04:15
URI:	http://repository.its.ac.id/id/eprint/136604

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