Evaluasi Tegangan Maksimum Sistem Tambat Akibat Variasi Geometri Hull Buoy Spm Di Terminal Cinta

Haloho, Ester Arinamy (2018) Evaluasi Tegangan Maksimum Sistem Tambat Akibat Variasi Geometri Hull Buoy Spm Di Terminal Cinta. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Dalam perkembangannya CALM buoy mengalami beberapa perubahan bentuk geometri. Mula mula CALM buoy dibuat dengan bentuk segi empat yang mempunyai drag resistance yang tinggi. Setelah itu, buoy dibuat dengan inovasi baru yaitu bentuk silinder dengan drag resistance yang lebih rendah. Namun, kekurangan dari inovasi ini adalah fabrikasi yang relatif mahal dan lama. Salah satu inovasi terbaru untuk bentuk buoy adalah dengan bentuk hexagonal dimana bentuk ini lebih menguntungkan karena lebih murah dan mudah untuk difabrikasi namun tetap mempertahankan hydrodynamic efficiency. Pada penelitian ini dilakukan evaluasi tegangan maksimum sistem tambat akibat variasi geometri hull buoy SPM di Terminal Cinta. Studi kasus yang digunakan pada penelitian ini adalah SPM #1043 (bentuk silinder) dan SPM Banner (bentuk hexagonal) yang beroperasi di Terminal Cinta milik PT.CNOOC SES Ltd dimana SPM #1043 digantikan oleh SPM Banner karena kondisinya sudah tidak layak operasi. Hasil analisis menunjukkan perbedaan geometri hull buoy mengakibatkan selisih yang besar untuk tegangan maksimum dan selisih yang tidak signifikan untuk tegangan rata-rata sistem tambat. Dimana selisih tegangan maksimum terbesar mencapai 593.6 kN sedangkan selisih tegangan rata-rata terbesar hanya mencapai 9.809 kN. =============================================================================================================== In its development, CALM buoy has undergone several geometrical shape iterations. In the beginning, CAL M buoy had a rectangular shape with high drag resistance. After th at, buoy was made with cylindrical shape, this innovation lowered the drag resistance of the buoy. However, the fabrication process of said buoy requires higher cost and longer time. One of the newest innovation has buoys in hexagonal shape, this shape is more profitable because it is not only cheaper and easier to be fabricated, it also retains hydrodynamic efficiency. In this research, evaluation was done on the maximum tension of mooring system due to SPM hull buoy geometric variation at Cinta Terminal. Case stud y used in this research is SPM #1043 (cylindrical shape) and SPM Banner (hexagonal shape) which have operated in Cinta Terminal of PT. CNOOC SES Ltd where SPM #1043 was changed to SPM Banner because its condition has already reached the end of its use. The result of this analysis shows the differen ce of geometrical shape causes a big difference for maximum tension and insignificant difference for mean tension of the mooring system. The biggest difference for maximum t ension reached 593.6 kN while the difference for mean tension merely reached 9.809 kN.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: CALM buoy, SPM, tegangan maksimum
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering
V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM161 Ships--Hydrodynamics
Divisions: Faculty of Marine Technology > Ocean Engineering > (S1) Undergraduate Theses
Depositing User: Ester arinamy haloho
Date Deposited: 19 Mar 2018 02:18
Last Modified: 19 Mar 2018 02:18
URI: http://repository.its.ac.id/id/eprint/50048

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