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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science Jurnal Teknik Sipil Warta Ardhia : Jurnal Perhubungan Udara IJOCE (International Journal of Offshore and Coastal Engineering) Wave: Jurnal Ilmiah Teknologi Maritim JURNAL TEKNIK HIDRAULIK International Journal of Marine Engineering Innovation and Research Sewagati
Eko Budi Djatmiko
Institut Teknologi Sepuluh Nopember, Surabaya
Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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Journal : IPTEK The Journal for Technology and Science

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Fatigue Life of Mooring Lines on External Turret Floating LNG for Different Pretension and Water Depth Norman Mahdar Sabana; Eko Budi Djatmiko; Rudi Walujo Prastianto
IPTEK The Journal for Technology and Science Vol 30, No 1 (2019)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.295 KB) | DOI: 10.12962/j20882033.v30i1.5009

Abstract

This paper studies fatigue life of mooring lines applied on turret-moored Floating LNG (Liquefied Natural Gas). Several case studies were designed to investigate the influence of mooring pretension and water depth on the fatigue life of mooring lines. Floating LNG with permanent external turret mooring system consists of 12 catenary lines arranged in 3 group with 4 lines each. Time domain simulation applied to calculated coupled dynamic response and mooring tension. Fatigue life is assessed using rainflow counting method, T-N curves and Palmgren-Miner rule. Analysis results for mooring pretension case show that case study 2 with lowest pretension (14%MBL) yields shortest mooring fatigue life of 1814.20 years compared to case study 1 (18%MBL) and 3 (22%MBL) with 2034.61 years and 2983.33 years respectively. Despite has the lowest dynamic line tension, case study 2 has larger tension range that results in the increased of fatigue damage. The increase in water depth will increase the mooring line length and its weight, so it results in the increase of fatigue damage. This is reflected in case study 5 (903m water depth), which has shortest mooring fatigue life of 1842.65 years compare to case study 1 (602m water depth) and 4 (301m water depth) with 2983.33 years and 3363.62 years respectively.
Co-Authors Abdul Ghofur Abi Latiful Hakim Aditya Hidayatullah Al Amin, Muhammad Zakaria Alit Winiscoyo Angga S. Pambudi Arda Arda Ari Rizki Rivaldo Asmajuna, Helmi Arif Aulia Siti Aisjah Baharuddin Ali Billy Teguh kurniawan Cendrawani Cendrawani Dewinta Putri Cahyaningtyas Eka Wahyu Ardi Erdina Arianti Erwandi Erwandi Hafizh Muhammad Naufal Shidqi Haryo Dwito Armono Helmi Arif Asmajuna Heri Supomo Ignasius Krisna Armanda Jusuf Sutomo Khoiron Syamdatu Perdana Kunthi U.D. Prabawani Kurniati, Nani Madea Eka Silfiani Mahmud Mustain Mas Murtedjo Maulinna Kusumo Wardhani, Maulinna Kusumo Mirba H. Dwi Sa'dyah Mochamad Hanif Rafi’i Mochammad Afif Zahiru Fajar Muhamad Fadkhurrohman Aziz Muhammad Badrus Zaman Muhammad Badrus Zaman Muhammad Fajariansyah Ismail Murdjito Murdjito Murdjito Djatmiko Murdjito Murdjito Murdjito Prastianto Norman Mahdar Sabana Nur Kholis Nur Syahroni Nurman Firdaus Firdaus Octaviani, Maulidya Permana, Rizki Dian Pravitasari, Inneke Yulistanty Rachmadiarto, Fajar Rafliansyah Azhar Putera Revy Maghriza Riza Aris Hikmadiyar Rizki Haryono A. Rizky Arrico Farhan Rochani, Imam Rosyid, Daniel Mohammad Rudi Walujo Prastianto Sayuti Syamsuar Setyo Nugroho Setyo Nugroho Setyo Nugroho Setyo Nugroho Shade Rahmawati Subchan Subchan Sujantoko Sujantoko Supomo, Wikaranosa Wahyu Suryo Putro Wahyudi Wikaranosa Scotiandharu Supomo Wisnu Wardhana Wisnu Wardhana Wisnu Wardhana Wolfgang Busse Wolfgang Busse Wolfgang Busse Wolfgang Busse Yeyes Mulyadi Yunan Setiawan Suwandono