Penilaian Risiko Tubrukan Floating Production Storage and Offloading (FPSO) - DP Shuttle Tanker pada Tandem Offloading Operation

Hanafi, Naufal Adham (2023) Penilaian Risiko Tubrukan Floating Production Storage and Offloading (FPSO) - DP Shuttle Tanker pada Tandem Offloading Operation. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tandem offloading operation merupakan operasi lepas pantai yang menempatkan kapal shuttle tanker di belakang FPSO untuk transfer muatan yang memiliki frekuensi tubrukan relatif tinggi dan bahaya tubrukan yang dapat menimbulkan konsekuensi yang parah dengan biaya operasi yang tinggi. Identifikasi bahaya menggunakan metode FMEA mendapatkan hasil efek kegagalan pada sistem yang diperkirakan pada sistem DP dan sistem propulsi. Analisis frekuensi dilakukan menggunakan metode Fault Tree Analysis (FTA) pada Powered Forward Movement (PFM) atau drive-off menghasilkan nilai frekuensi 5,70999x10-3sedangkan metode Event Tree Analysis(ETA) pada menghasilkan nilai frekuensi tubrukan sebesar 3,37x10-3. Analisis konsekuensi menggunakan ANSYS pada variasi kecepatan 0,15 m/s hasil maximum total deformation adalah 9,8307 m dan maximum equivalent stress adalah 1,0006x108 Pa; Pada variasi kecepatan 0,25 m/s hasil maximum total deformation adalah 9,8307 m dan maximum equivalent stress adalah 1,00796x108 Pa; Pada variasi kecepatan 0,7 m/s hasil maximum total deformation adalah 9,8275 m dan maximum equivalent stress adalah 8,5451x107 Pa. Tubrukan dengan kecepatan 0,15 m/s berada pada indeks risiko 4 yaitu kemungkinan kecil dan minor yang berada pada kriteria penerimaan acceptable; Tubrukan dengan kecepatan 0,25 m/s berada pada indeks risiko 4 yaitu kemungkinan kecil dan minor yang berada pada kriteria penerimaan acceptable; Sedangkan tubrukan dengan kecepatan 0,7 m/s berada pada indeks risiko 4 yaitu kemungkinan kecil dan minor yang berada pada kriteria penerimaan acceptable, oleh karena itu kontrol risiko tidak perlu dilakukan.
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Tandem offloading operation is an offshore operation that places a shuttle tanker behind the FPSO for cargo transfer that has a relatively high collision frequency and collision hazard that can have severe consequences with high operating costs. Hazard identification using the FMEA method obtained the results of failure effects on the system which were predicted on the DP system and propulsion system. Frequency analysis was conducted using the Fault Tree Analysis (FTA) method on Powered Forward Movement (PFM) or drive-off resulting in a frequency value of 5.70999x10-3 while the Event Tree Analysis (ETA) method resulted in a collision frequency value of 3.37x10-3. Consequence analysis using ANSYS at a speed variation of 0.15 m/s results in maximum total deformation is 9.8307 m and maximum equivalent stress is 1.0006x108 Pa; At a speed variation of 0.25 m/s results in maximum total deformation is 9.8307 m and maximum equivalent stress is 1.00796x108 Pa; At a speed variation of 0.7 m/s results in maximum total deformation is 9.8275 m and maximum equivalent stress is 8.5451x107 Pa. Collision with a speed of 0.15 m/s is at risk index 4, which is a small and minor possibility which is at the acceptable acceptance criteria; Collision with a speed of 0.25 m/s is at risk index 4, which is a small and minor possibility which is at the acceptable acceptance criteria; While collision with a speed of 0.7 m/s is at risk index 4, which is a small and minor possibility which is at the acceptable acceptance criteria, therefore risk control does not need to be carried out.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	DP, FPSO, Penilaian Risiko, Risk Assessment, Shuttle Tanker, Tandem Offloading Operation.
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ174 Maintenance and repair of machinery T Technology > TJ Mechanical engineering and machinery > TJ903 Pumping machinery. V Naval Science > V Naval Science (General) V Naval Science > VC Naval Maintenance > VC 270-279 Equipment of vessels, supplier,allowances,etc V Naval Science > VK > VK200 Merchant marine--Safety measures V Naval Science > VK > VK361 Mooring of ships. Dry docks V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM156 Naval architecture V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM753 Propellers
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Naufal Adham Hanafi
Date Deposited:	13 Nov 2023 01:54
Last Modified:	13 Nov 2023 01:54
URI:	http://repository.its.ac.id/id/eprint/102614

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