Analisis Tegangan Mooring Line Pada Single Point Mooring CALM Buoy Cilacap

Hariyanto, Bin (2018) Analisis Tegangan Mooring Line Pada Single Point Mooring CALM Buoy Cilacap. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Struktur bangunan lepas pantai sangat berpengaruh dengan dunia ekplorasi minyak dan gas (migas). Salah satu contoh adalah Single Point Mooring. Yakni berfungsi sebagai sarana tambat di laut dengan dilengkapi sistem penyaluran minyak melalui pipa bawah air sehingga kapal tanker tidak perlu merapat kedarat atau daerah pantai.Setiap struktur Single Point Mooring / SPM sendiri dirancang mempunyai kapasitas tambat kapal tanker yang akan merapat. Akan tetapi terkadang kapal tanker yang tambat ke SPM tidak jarang melebihi batas kapasitas tambat dari SPM tersebut. Dalam tugas akhir ini akan membahas mengenai analisis kekelehan SPM bertipe catenary anchored leg mooring (CALM) untuk menerima beban tambahan (over) dari batas kapastitas struktur tersebut yang telah ditetapkan (300kDWT). Diharapkan dari penelitian tugas akhir ini didapatkan grafik kemampuan maksimal SPM dalam menerima beban yang melebihi kapasitas tambatnya. Software yang digunakan adalah Moses 8.0 untuk permodelan SPM dan kapal tanker dengan output berupa RAO (Respons Ampitude Operator), serta menggunakan Orcaflex 9.2 untuk menganalisis pergerakannya (motion analysis). Setelah melalukan simulasi dengan Orcaflexdidapatkan tension terbesar terjadi di L1 dengan besaran 405,931 tF pada saat in line dan 333,47Tf pada saat between line. Hasil tension tersebut juga memenuhi nilai minimum breaking load dan safety factor. ========================================================= Offshore structure has an influence particulary on the oil and gas industry. One oh the components is Single Point Mooring (SPM). The function is as a mooring infrastructure in the sea complated with the oil distribution system through the underwater pipeline, so that the tanker does not necessary move close to coastal area and/or docking. Every desiging SPM has tanker mooring capacity which will docking. But sometimes the tanker which is mooring to SPM has over capacity than SPM its self. This final project will describe about SPM tension analysis with the type of Catenary Anchored Leg Mooring (CALM) to get the over additional load from the structure capacity stated 300K DWT. It is hoped that from this research, we will know the maximum capacitygraph from the SPM on accepting overload from its mooring. The using software are MOSES 8.0 for SPM modelling and tanker modelling with output is Response Amplitude Operator (RAO), as well as Orcafles 9.2 for motion analysis. After the simulation with Orcaflex obtained the largest tension occurred in L1 with a 405.931 tF at the time of in line and 333.47 tF on between lines. The tension results also meet the minimum value of breaking load and safety factor.

Item Type: Thesis (Undergraduate)
Additional Information: RSKe 627.32 Har a
Uncontrolled Keywords: single point mooring-catenary anchored leg mooring, Moses 8.0, Orcaflex 9.2
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures
V Naval Science > VK > VK361 Mooring of ships. Dry docks
Divisions: Faculty of Marine Technology (MARTECH) > Ocean Engineering > 38201-(S1) Undergraduate Thesis
Depositing User: Bin Hariyanto
Date Deposited: 13 Nov 2020 11:50
Last Modified: 18 Jan 2021 03:52
URI: https://repository.its.ac.id/id/eprint/59072

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