Laporan Magang PT. Pertamina Geothermal Energy Tbk. Area Karaha

Rafi, Syahdatul Muhammad (2025) Laporan Magang PT. Pertamina Geothermal Energy Tbk. Area Karaha. Project Report. [s.n.]. (Unpublished)

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Abstract

Laporan magang ini mengkaji pelaksanaan kegiatan kerja praktik di PT. Pertamina Geothermal Energy Tbk. Area Karaha, yang berfokus pada pemanfaatan energi panas bumi untuk pembangkitan tenaga listrik serta pengecekan dan pengoperasian sistem utilitas pendukung. Pembangkit Listrik Tenaga Panas Bumi (PLTP) Area Karaha berkapasitas 30 MW mengandalkan uap panas bumi (steam) dari sumur produksi di klaster KRH dan TLG, yang kemudian dipisahkan melalui separator dan disaring menggunakan scrubber sebelum dialirkan untuk memutar turbin dan generator. Selain tinjauan proses produksi, neraca massa, neraca energi, serta analisis keselamatan kerja menggunakan metode Hazard and Operability Study (HAZOP) pada scrubber, laporan ini juga membahas studi kasus (troubleshooting) mengenai proses regenerasi resin kation-anion pada unit demineralisasi air Heating, Ventilation, and Air Conditioning (HVAC) yang digunakan sebagai air top up sistem Closed Cooling Water (CCW). Evaluasi kinerja resin menunjukkan bahwa regenerasi menggunakan larutan HCl 4% dan NaOH 6% mampu menurunkan nilai konduktivitas listrik (Electrical Conductivity/EC) air demineral dari 5,9 µS/cm menjadi 1,0 µS/cm serta memulihkan pH ke kisaran netral, dengan tingkat efektivitas regenerasi mencapai sekitar 83,05%. ==============================================================================================================================
This internship report examines the implementation of practical work at PT Pertamina Geothermal Energy Tbk., Karaha Area, with a focus on the utilization of geothermal energy for electricity generation and the inspection and operation of supporting utility systems. The Karaha Geothermal Power Plant (GPP), with an installed capacity of 30 MW, utilizes geothermal steam produced from the KRH and TLG production well clusters. The steam is separated using a separator and purified through a scrubber before being directed to drive the turbine and generator. In addition to discussing the production process, mass balance, energy balance, and occupational safety analysis using the Hazard and Operability Study (HAZOP) method on the scrubber system, this report also presents a case study on troubleshooting the regeneration process of cation and anion resins in the Heating, Ventilation, and Air Conditioning (HVAC) water demineralization unit. The demineralized water is used as make-up water for the Closed Cooling Water (CCW) system. The performance evaluation of the ion-exchange resins showed that regeneration using 4% hydrochloric acid (HCl) and 6% sodium hydroxide (NaOH) solutions successfully reduced the electrical conductivity (EC) of the demineralized water from 5.9 µS/cm to 1.0 µS/cm while restoring the water pH to a neutral range. The resin regeneration process achieved an effectiveness of approximately 83.05%.

Item Type:	Monograph (Project Report)
Uncontrolled Keywords:	Pembangkit Listrik Tenaga Panas Bumi (PLTP), Demineralisasi, Regenerasi Resin, Konduktivitas Listrik, Closed Cooling Water (CCW), HAZOP, Geothermal Power Plant (GPP), Demineralization, Resin Regeneration, Electrical Conductivity, Closed Cooling Water (CCW), HAZOP
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants
Divisions:	Faculty of Vocational > 24305-Industrial Chemical Engineering
Depositing User:	Syahdatul Muhammad Rafi
Date Deposited:	30 Jul 2026 08:17
Last Modified:	30 Jul 2026 08:17
URI:	http://repository.its.ac.id/id/eprint/141162

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