Akbar, Yurnaldi (2026) Evaluasi Kelayakan Repurposing Pipa Subsea Gas Pada Sistem Floating Storage Regasification Unit Jawa Barat – Onshore Receiving Facility Muara Karang Untuk Transportasi Hydrogen Blending. Masters thesis, Institut Teknologi Sepuluh November.
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Abstract
Transisi menuju sistem energi rendah karbon mendorong pemanfaatan hidrogen sebagai energy carrier melalui konsep hydrogen blending pada jaringan pipa gas alam eksisting. Salah satu alternatif yang potensial adalah repurposing pipa gas alam, namun implementasinya memerlukan evaluasi terhadap karakteristik aliran, integritas material, kebutuhan infrastruktur, dan kelayakan ekonomi. Penelitian ini bertujuan mengevaluasi kelayakan repurposing pipa subsea Floating Storage Regasification Unit (FSRU) Jawa Barat–Onshore Receiving Facility (ORF) Muara Karang sebagai media transportasi hydrogen blending menuju PLTGU Muara Karang.
Penelitian dilakukan pada pipa subsea sepanjang 15 km dengan diameter 24 inci dan tekanan operasi 620 psi. Analisis dilakukan pada dua skenario lokasi injeksi hidrogen dengan variasi konsentrasi 0–30% berdasarkan fraksi volume. Evaluasi hidraulik dilakukan menggunakan perhitungan sifat campuran CH₄–H₂, bilangan Reynolds, faktor gesek Colebrook–White, dan pressure drop berdasarkan persamaan Darcy–Weisbach yang divalidasi melalui perhitungan analitik. Evaluasi integritas material mengacu pada ASME B31.12, ASME B31.8, API Specification 5L, dan DNV-RP-FM214, sedangkan analisis ekonomi menggunakan parameter CAPEX, OPEX, NPV, IRR, Payback Period (PBP), dan Levelized Cost of Hydrogen Transport (LCOHT). Hasil penelitian menunjukkan bahwa hydrogen blending memengaruhi karakteristik hidraulik dan kebutuhan energi kompresi, namun sistem perpipaan masih memenuhi persyaratan teknis berdasarkan hasil perhitungan dan evaluasi standar yang digunakan. Penelitian ini menghasilkan kerangka evaluasi teknis dan ekonomi yang dapat menjadi dasar pengambilan keputusan dalam implementasi repurposing pipa subsea untuk transportasi hidrogen pada sektor pembangkitan listrik di Indonesia.
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The transition to a low-carbon energy system encourages the use of hydrogen as an energy carrier through the concept of hydrogen blending in existing natural gas pipelines. One potential alternative is repurposing natural gas pipelines, but implementation requires an evaluation of flow characteristics, material integrity, infrastructure requirements, and economic feasibility. This study aims to evaluate the feasibility of repurposing the West Java Floating Storage Regasification Unit (FSRU)–Muara Karang Onshore Receiving Facility (ORF) subsea pipeline as a means of transporting hydrogen blending to the Muara Karang Combined Cycle Power Plant (PLTGU). The study was conducted on a 15-km subsea pipeline with a 24-inch diameter and an operating pressure of 620 psi. The analysis was conducted on two hydrogen injection location scenarios with concentration variations of 0–30% by volume fraction. Hydraulic evaluation was performed using calculations of CH₄–H₂ mixture properties, Reynolds number, Colebrook–White friction factor, and pressure drop based on the Darcy–Weisbach equation, validated through analytical calculations. The material integrity evaluation refers to ASME B31.12, ASME B31.8, API Specification 5L, and DNV-RP-FM214, while the economic analysis uses CAPEX, OPEX, NPV, IRR, Payback Period (PBP), and Levelized Cost of Hydrogen Transport (LCOHT) parameters. The results show that hydrogen blending affects hydraulic characteristics and compression energy requirements, but the piping system still meets technical requirements based on the calculations and standard evaluations used. This research produces a technical and economic evaluation framework that can serve as a basis for decision-making in implementing subsea pipeline repurposing for hydrogen transportation in the power generation sector in Indonesia.
| Item Type: | Thesis (Masters) |
|---|---|
| Uncontrolled Keywords: | hydrogen blending, repurposing pipeline, pipa subsea, hydrogen embrittlement, analisis tekno-ekonomi, hydrogen blending, pipeline repurposing, subsea pipeline, hydrogen embrittlement, techno-economic analysis. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ930 Pipelines (General). Underwater pipelines. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21101-(S2) Master Thesis |
| Depositing User: | Yurnaldi Akbar |
| Date Deposited: | 30 Jul 2026 07:51 |
| Last Modified: | 30 Jul 2026 07:51 |
| URI: | http://repository.its.ac.id/id/eprint/139943 |
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