Rahadian, Gilang (2021) Analisa RAM (Reliability, Availability, Maintainability) Untuk Komponen Dengan Level Rotating dan Instrument Pada Gas Central Processing Plant. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Indonesia melalui PP. Nomor 79 Tahun 2014 tentang Kebijakan Energi Nasional memiliki komitmen untuk meningkatkan pemanfaatan sumber energi domestik diantaranya gas bumi dari 19% menjadi 24% pada tahun 2050 sebagai energi bersih dan ramah lingkungan. Kunci utama adalah peningkatan produksi pada salah satu blok migas potensial yaitu Blok Brantas berlokasi di Jawa Timur dengan cadangan gas alam cukup besar mencapai 81,05 BSCF yang terbagi ke dalam beberapa lapangan gas, salah satunya Lapangan Wunut. Sehingga pengolahan gas alam sisi hulu (produsen) tentu membutuhkan fasilitas sistem gas processing dengan parameter keandalan dan ketersediaan yang optimal. Maka dari itu, penelitian dilakukan untuk mengetahui nilai keandalan dan ketersediaan dengan metode kuantitatif pada level komponen dan sistem eksisting gas processing facilities di Lapangan Wunut. Penilaian didasarkan pada parameter uji distribusi data time to failure (TTF) dan time to repair (TTR) pada pemeliharaan tipe korektif dan preventif terjadwal dengan bantuan perangkat lunak Weibull++ dan Blocksim untuk simulasi keandalan dan ketersediaan pada level sistem. Hasil dari penelitian ini menunjukkan nilai keandalan sistem eksisting sebesar 0.45 pada 8760 jam (1 tahun) dengan nilai ketersediaan sistem yang cukup tinggi mencapai 99.7%. Optimalisasi nilai keandalan dilakukan dengan strategi penempatan komponen pendukung (standby) yang dapat meningkatkan redundansi pada sistem. Perbandingan dilakukan melalui simulasi ulang pada sistem modifikasi dengan penambahan 4 unit komponen standby masing-masing pada komponen Separator, Gas Scrubber, Air Receiver, dan Flare KO Drum berdasarkan hasil analisa kekritisan komponen dengan pendekatan probability rating dan consequence rating (severity). Hasil modifikasi menunjukkan peningkatan nilai keandalan mencapai 0.85 (t = 8760 jam) dan ketersediaan sistem sebesar 99.9%. Penilaian keekonomian terhadap sistem modifikasi menggunakan metode perhitungan terhadap biaya investasi, biaya operasional, biaya perawatan, biaya pajak, dan nilai depresiasi selama 10 tahun. Parameter penilaian menunjukkan nilai Payback Period dalam 7.07 tahun, IRR senilai 7.23%, dan NPV positif sebesar $ 10,859.26 yang menunjukkan modifikasi pada sistem dengan penambahan 4 unit komponen standby bernilai optimal dalam segi produktivitas dan ekonomi.
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Through Government Regulation Number 79 of 2014 concerning National Energy Policy, Indonesia commits to increase the use of domestic energy sources, including natural gas, from 19% to 24% in 2050 as clean and environmentally friendly energy. The primary key is to increase production in one of the potential oil and gas blocks, namely the Brantas Block, located in East Java, with large natural gas reserves reaching 81.05 BSCF, divided into several gas fields, one of which is the Wunut Field. So that the upstream side of natural gas processing (producer) certainly requires gas processing system facilities with optimal reliability and availability parameters. Therefore, research is conducted to determine the value of reliability and availability with quantitative methods at the component and system level of the existing gas processing facilities in the Wunut Field. The assessment was carried out using a quantitative method based on the distribution test parameters of time to failure (TTF) and time to repair (TTR) data on corrective and scheduled preventive maintenance with the help of Weibull++ and Blocksim software for simulation of reliability and availability at the system level. The results of this study indicate the reliability value of the existing system is 0.45 at 8760 hours (1 year), with a reasonably high system availability value of 99.7%. Optimization of the reliability value is carried out by placing a support component (standby) to increase redundancy in the system. Comparisons were made through re-simulation of the modified system with four units of standby components, each for the Separator, Gas Scrubber, Air Receiver, and Flare KO Drum components based on the results of component criticality analysis with a probability rating and consequence rating (severity) approach. The modification results show an increase in the reliability value reaching 0.85 (t = 8760 hours) and the system availability by 99.9%. The economic assessment of the modified system uses the calculation method of investment costs, operational costs, maintenance costs, tax costs, and the value of depreciation for 10 years. The assessment parameter shows the Payback Period value in 7.07 years, IRR of 7.23%, and a positive NPV of $ 10,859.26, which indicates that the modification to the system by adding four units of standby components is optimal in terms of productivity and economy.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Keandalan, Ketersediaan, Pemeliharaan, Diagram Blok Keandalan, Analisa Kekritisan, Simulasi Weibull++, Blocksim, Reliability, Availability, Maintainability, Reliability Block Diagram, Critical Analysis, Weibull++ Simulation, Blocksim |
| Subjects: | T Technology > TS Manufactures > TS174 Maintainability (Engineering) . Reliability (Engineering) |
| Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
| Depositing User: | Gilang Rahadian |
| Date Deposited: | 30 Aug 2021 08:17 |
| Last Modified: | 12 Jun 2024 06:13 |
| URI: | http://repository.its.ac.id/id/eprint/91169 |
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