ROUTE SELECTION AND CONCEPTUAL DESIGN OF BATUI - BAHODOPI LIQUIFIED NATURAL GAS PIPELINE
The Ministry of Energy and Mineral Resources of the Republic of Indonesia states that Indonesia has a high dependency on fossil energy and coal, accounting for 68% of its primary energy supply. The National Energy Policy (KEN) and the Paris Agreement encourage the reduction of fossil energy usage...
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| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/77200 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The Ministry of Energy and Mineral Resources of the Republic of Indonesia states
that Indonesia has a high dependency on fossil energy and coal, accounting for
68% of its primary energy supply. The National Energy Policy (KEN) and the Paris
Agreement encourage the reduction of fossil energy usage, implementation of
renewable energy, and greenhouse gas emissions reduction. In support of these
goals, Indonesia possesses natural gas reserves distributed across the country.
Particularly in Sulawesi, there is a natural gas reserve of approximately 3.93
trillion standard cubic feet (TSCF). The construction plan of the Combined Cycle
Power Plant (PLTG) in Bahodopi, Central Sulawesi requires a safe and stable
supply of Liquified Natural Gas (LNG), necessitating the establishment of a
transmission pipeline for the optimal operation of the power plant.
The transmission pipeline is planned to connect Bahodopi with the nearest LNG
facility located in Batui. The selection of the pipeline route involves an analysis
aimed at minimizing cost and construction time risks. Alternative pipeline routes
are chosen based on a scoring matrix that takes into account physical, geopolitical,
and cost factors.
The pipeline design is carried out using data and conditions that correspond to the
selected route. The pipeline design adheres to DNVGL-ST-F101 and ASME B31.4
standards for determining pipeline wall thickness, DNV-RP-F109 for determining
the thickness of concrete weight coating to ensure on-bottom stability, DNVGL-STF101
for checking pipeline installation stress, and DNVGL-RP-F105 for screening
fatigue and ultimate limit state (ULS) due to free spans.
Based on the planning and design process of this study, a hybrid pipeline route is
selected, comprising onshore and offshore pipeline segments. The obtained pipeline
wall thickness is 10.3 mm for the onshore segment and 14.3 mm for the offshore
segment. The pipeline achieves absolute stability with a 40 mm thick concrete
weight coating and a trench depth of 0.04 m at a 45° angle. The pipeline installation
at a maximum depth of 115 m meets the stress criteria. The free span length that
satisfies the screening fatigue and ULS is 14.4 m. |
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