Adlanie, Muhammad (2022) Penilaian Risiko Pada Jetty-Less LNG Transfer System Untuk Terminal LNG di Darat. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Mempersiapkan kondisi kebutuhan LNG ke depan, perusahaan BUMN Indonesia telah menandatangani pokok-pokok kesepakatan kerja sama yang menghasilkan pengembangan Regasifikasi LNG skala kecil di Cilacap, Jawa Tengah secara bertahap hingga 111 MMSCFD selama 20 tahun. Terminal regasifikasi LNG kecil berbasis darat juga diharapkan dapat menampung kapal pengangkut LNG dengan kapasitas hingga 85.000 DWT untuk operasi bongkar muat LNG di Jetty 1 milik PT Pertamina RU IV Cilacap. Saat ini, jetty 1 yang ada hanya dapat menangani operasi bongkar muat untuk kapal hingga 35.000 DWT dan tidak memiliki fasilitas transfer LNG. Oleh karena itu, penelitian ini bertujuan untuk merancang, mengimplementasikan dan menilai potensi bahaya dari inovasi fasilitas transfer yang disebut Jetty-Less LNG Transfer System. Risiko yang mungkin terjadi saat operasi pembongkaran sedang berlangsung diselidiki dengan menggunakan HAZOP yang dibagi ke dalam 8 node. Hasil penelitian menunjukkan bahwa ada 5 kemungkinan kejadian seperti Jet Fire, Vapor Cloud Explosion (VCE), Flash Fire, Pool Fire dan Gas Dispersion yang disebabkan oleh tekanan berlebih di dalam pipa dan menyebabkan kebocoran. Analisis frekuensi dianalisis dengan menggunakan Fault Tree Analysis (FTA) dan Event Tree Analysis (ETA). Fault Tree Analysis (FTA) menggunakan skenario kebocoran total, skenario diameter lubang 1-3 mm, 3-10 mm, 10-50 mm, 50-150 mm dan >150 mm dan beberapa database kegagalan. Hasil penelitian FTA menunjukkan frekuensi kegagalan dari top event yaitu kebocoran LNG dan pelepasan gas. Event Tree Analysis (ETA) dikembangkan dengan menggunakan data sekunder. Hasilnya bersesuaian dengan peluang terjadinya Jet Fire, VCE, Flash Fire dan Pool Fire. Setelah itu, dampak kejadian terhadap pekerja di sekitar area pembongkaran dianalisis. Jumlah korban jiwa tertinggi ada pada kejadian jet fire (siang dan malam) untuk node 3,6 dan 7 skenario 10-50 mm, 50-150 mm, dan >150 mm dengan jumlah masing-masing 2, 3 dan 4 orang. Risiko kemudian direpresentasikan dalam kurva F-N dengan memplot F (frekuensi kumulatif) dan N (jumlah kematian). Mitigasi tidak dilakukan karena hasil keseluruhan menunjukkan ALARP dan kategori dapat diterima.
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Preparing future LNG demand conditions, Indonesian stated owned companies had signed the main points of a cooperation agreement resulted in the development of small-land-based LNG Regasification in Cilacap, Central Java in stages up to 111 MMSCFD for 20 years. The small-land-based LNG regasification terminal is also expected to accommodate an LNG carrier weighing up to 85,000 DWT for the LNG unloading operation at Jetty 1 owned by PT Pertamina RU IV Cilacap. Currently, the existing jetty 1 could only handle unloading operations for vessels up to 35,000 DWT and has no LNG transfer facilities. Therefore, this research is aimed to design, implement and assess transfer facilities innovation called Jetty-Less LNG transfer system. The possible risk that might occur is investigated by using HAZOP and recognized using 8 nodes. The result shows that there are 5 possible events such as Jet Fire, Vapor Cloud Explosion (VCE), Flash Fire, Pool Fire and Gas Dispersion. The frequency analysis is analyzed by using Fault Tree Analysis (FTA) and Event Tree Analysis (ETA). The Fault Tree Analysis uses total leak scenario, hole diameter scenario of 1-3 mm, 3-10 mm, 10-50 mm, 50-150 mm and >150 mm and some failure databases. The result shows the failure frequency of the top event which are LNG leak and gas release. The Event Tree Analysis (ETA) is developed by using secondary data. The results are according to the occurrence probability of Jet Fire, VCE, Flash Fire and Pool Fire. Afterwards, the possible impact to the worker nearby the unloading area is analyzed. The highest number of fatalities is in the event of jet fire (day and night) for node 3,6 and 7 scenario 10-50 mm, 50-150 mm, and >150 mm with the amount of 2, 3 and 4 people respectively. The risks are then represented in the F-N curve by plotting the F (cumulative frequency) and N (number of fatalities). The mitigation is not carried out since the overall result shows in ALARP and acceptable category.
Item Type: | Thesis (Undergraduate) |
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Uncontrolled Keywords: | Jetty-Less LNG Transfer System, Hazard Identification, Analisis Frekuensi, Analisis Konsekuensi, Representasi Risiko |
Subjects: | T Technology > TP Chemical technology > TP343 Liquid and gaseous fuel |
Divisions: | Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis |
Depositing User: | Muhammad Adlanie |
Date Deposited: | 08 Feb 2022 03:28 |
Last Modified: | 08 Feb 2022 03:28 |
URI: | http://repository.its.ac.id/id/eprint/92991 |
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