Analisis Kekuatan Sistem Tambat dan Subsea Hose Pada Single Point Mooring Akibat Variasi Jumlah Subsea Hose

Rachman, Radya Daniswara (2023) Analisis Kekuatan Sistem Tambat dan Subsea Hose Pada Single Point Mooring Akibat Variasi Jumlah Subsea Hose. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Perkembangan teknologi dalam beberapa dekade terakhir terjadi perubahan pesat dan masif di dunia minyak & gas. Salah satunya, penggunaan subsea hose sebagai penghubung wellhead dengan fasilitas lepas pantai terapung. Pada studi ini, subsea hose dimodelkan dan dilakukan analisa jumlah konfigurasi pada sebuah SPM dan diuji berdasarkan arah pembebanan lingkungan, muatan FSO, kondisi operasi, dan jumlah hose dalam sebuah konfigurasi SPM. Simulasi komputasi dilakukan pada scenario menyesuaikan variabel uji. SPM, subsea hose, mooring lines, dan FSO semula dimodelkan dan dilakukan pemeriksaan standar IACS dan API. Kemudian, RAO SPM dan FSO dilakukan analisa sebelum hose ditempatkan dalam sebuah model konfigurasi SPM. Dalam studi ini, penggunaan hose dimodelkan sebanyak satu hingga empat hose pada sebuah konfigurasi SPM dalam bentuk Chinese lantern serta lay-z. Sebagai hasil dari analisis, Tegangan maksimum sistem tambat SPM sangat dipengaruhi oleh pergerakan FSO dan arah pembebanan lingkungan hingga terjadi kenaikan hingga 86,13% ketika kondisi ultimate. Tegangan maksimum subsea hose berkurang ketika jumlah hose dalam konfigurasi ditambahkan. Minimum line clearance pada Chinese Lantern Hose mengalami penurunan hingga 28,3% dimana Chinese Lantern Hose 1 memiliki line clearance terkecil sebesar 3,178m. Dari hasil analisa Tugas Akir ini, perusahaan migas yang mengoperasikan fasilitas lepas pantai terapung dapat mengidentifikasi dan melekukan penyesuaian untuk pengembangan lapangan. Selain itu, sistem produksi lepas pantai, terutama SPM, dapat melakukan operasi yang lebih aman dan mengurangi potensi kerugian produksi perusahaan
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In the past few decades, there have been rapid and massive technological advancements in the oil and gas industry. One such development is the use of subsea hoses as a connection between the wellhead and offshore floating facilities. In this study, subsea hoses were modeled and analyzed for various configurations in a Single Point Mooring (SPM) system. The analysis considered environmental loading directions, FSO (Floating Storage and Offloading) vessel loads, operational conditions, and the number of hoses in an SPM configuration. Computational simulations were performed based on the test variables, and the SPM, subsea hoses, mooring lines, and FSO were initially modeled and examined according to IACS and API standards. Then, the SPM and FSO RAOs (Response Amplitude Operators) were analyzed before incorporating the hoses into an SPM configuration model. In this study, the use of hoses was modeled from one to four hoses in a Chinese lantern and lay-z configuration. The analysis results showed that the maximum tension in the SPM mooring system is highly influenced by the FSO's motion and environmental loading direction, with an increase of up to 86.13% in the ultimate condition. The maximum tension in the subsea hoses decreases as the number of hoses in the configuration is increased. The minimum line clearance in the Chinese Lantern Hose configuration decreases by up to 28.3%, with Chinese Lantern Hose 1 having the smallest line clearance of 3.178 meters. Based on the findings of this research, offshore oil and gas companies operating floating facilities can identify and make adjustments for field development. Additionally, offshore production systems, especially SPMs, can operate more safely and reduce potential production losses for the company.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Sistem Tambat, Single Point Mooring, Subsea Hose, Mooring Lines
Subjects:	V Naval Science > VK > VK358 Marine terminals V Naval Science > VK > VK361 Mooring of ships. Dry docks
Divisions:	Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User:	Radya Daniswara Rachman
Date Deposited:	24 Jul 2023 05:11
Last Modified:	24 Jul 2023 05:11
URI:	http://repository.its.ac.id/id/eprint/99111

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