Analisis Desain Impressed Current Anti Fouling (ICAF) Di Floating Storage Production Offloading (FPSO): Studi Kasus Di Ratu Nusantara

Mahendra, Deva (2024) Analisis Desain Impressed Current Anti Fouling (ICAF) Di Floating Storage Production Offloading (FPSO): Studi Kasus Di Ratu Nusantara. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pertumbuhan fouling di kapal menghadirkan berbagai konsekuensi negatif. Biota laut seperti
kerang, mussels, dan teritip yang menempel di jaringan pipa kapal dikenal sebagai fouling. Keberadaan
fouling pada jaringan pipa kapal dapat menyebabkan penyumbatan dan kerusakan pompa. Berbagai upaya
telah dilakukan untuk mengatasi fouling pada FPSO Ratu Nusantara, salah satunya dengan penggunaan cat
anti-fouling. Akan tetapi, penggunaan cat anti-fouling saat ini dilarang karena mengandung zat kimia yang
berbahaya bagi biota laut. Sebagai alternatif, Impressed Current Anti Fouling (ICAF) diterapkan. ICAF
bekerja dengan cara mengalirkan arus listrik searah (DC) pada anoda yang terpasang pada reaction tank.
Hal ini mencegah pertumbuhan fouling pada jaringan pipa sistem FPSO Ratu Nusantara, terutama pada
bagian yang menggunakan air laut. Skripsi ini bertujuan untuk menghasilkan besarnya arus searah (DC)
dan tegangan yang dialirkan pada setiap anoda untuk mencegah fouling. Analisis dilakukan pada reaction
tank dengan luas permukaan 3.297 m² dan menghasilkan arus proteksi 0.3297 Ampere dalam perhitungan
ulang. Arus ini akan dialirkan ke anoda yang dirancang untuk bertahan selama 10 tahun (sesual jadwal
pengedokan). Perhitungan ulang menghasilkan perkiraan berat masing – masing anoda, yaitu 38.9 kg untuk
anoda besi, 46.2 kg untuk anoda tembaga, dan 44.4 kg untuk anoda aluminium. Sebagai hasil akhir, skripsi
ini akan membandingkan sistem ini dengan perhitungan sistem Impressed Current Anti Fouling (ICAF)
berbasis Cathwell.
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The growth of fouling on the ship brings a variety of negative consequences. Marine biota like shells,
mussles, and funnels that cling to the ship pipe network are known as fouling. The presence of fouling on
the ship’s pipe network can cause blockage and damage to the pump. Efforts have been made to tackle
fouling on FPSO Ratu Nusantara, one of which is the use of anti-fouling paints. However, the use of anti�fouling paint is currently prohibited because it contains chemicals that are harmful to marine life. As an
alternative, Impressed Current Anti Fouling (ICAF) is implemented. The ICAF works by flowing direct
electric current (DC) to the anodes attached to the reaction tank. This prevent the growth of fouling on the
pipeline network of the FPSO Ratu Nusantara system, especially on the part that uses seawater. The
purpose of this script is to generate the magnitude of the DC current and the voltage that is distributed to
each anode to prevent fouling. The analysis was carried out on a recation tank with a surface area of 3.297
m² and produced a protection current of 0.3297 amperes in recalculation. This current will be delivered to
anodes designed to last for 10 years (according to the ship’s scheduling). The recalculation resulted in the
estimated weight of each anode, which was 38.9 kg for the iron anodes, 46.2 kg for the copper anodes, and
44.4 kg for the aluminium anodes. As a final result, this script would compare this system to Cathwell based
Impressed Current Anti Fouling (ICAF) calculations.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Anoda, Arus Searah (DC), Fouling, FPSO, Impressed Current Anti Fouling, Laju Konsumsi Anoda, Direct Current (DC), Fouling, FPSO, Impressed Current Anti Fouling, Consumption Rate
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2551 Electric transformers. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK351 Electric measurements. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7878 Electronic instruments V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM453 Oceanographic research ships.
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Deva Ilham Esa Mahendra
Date Deposited:	07 Aug 2024 02:02
Last Modified:	07 Aug 2024 02:02
URI:	http://repository.its.ac.id/id/eprint/112809

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