Perancangan Sistem Perlindungan Korosi dengan SACP pada Coated Tank Bottom Plate (Soil Side) PT. X

Mahdyanta, Elfrida Athallah Noor (2024) Perancangan Sistem Perlindungan Korosi dengan SACP pada Coated Tank Bottom Plate (Soil Side) PT. X. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proteksi korosi menggunakan coating dan Sacrificial Anode Cathodic Protection (SACP) adalah jenis pengendalian korosi yang dapat digunakan pada tank bottom plate (soil side) PT. X. Tujuan penelitian ini adalah melakukan perhitungan perancangan SACP pada tank bottom plate (soil side), menganalisis kelayakan hasil perancangan SACP pada tank bottom plate (soil side) menggunakan simulasi atau permodelan, serta menganalisis keekonomian SACP menggunakan anoda seng dan magnesium. Variabel penelitian ini adalah coating breakdown 5% dengan kondisi well coated dan 10% dengan kondisi poor coating, variabel kontrol berupa konfigurasi peletakan anoda korban terdistribusi secara merata mengelilingi zona yang terkorosi, serta jenis anoda korban yakni anoda Zinc type II dan anoda High Potential Magnesium. Setelah melakukan perhitungan desain Sacrificial Anode Cathodic Protection, hasil perhitungan tersebut divalidasi dengan simulasi menggunakan software ANSYS Workbench. Pada perancangan SACP menggunakan perhitungan, anoda Zn dibutuhkan sejumlah 1 buah dan 7 buah dengan nilai arus yang dikeluarkan anoda sebesar 0,033 A dan 0,094 A untuk coating breakdown 5% dan 10%. Anoda Mg dibutuhkan sejumlah 1 buah dan 5 buah dengan nilai arus yang dikeluarkan anoda sebesar 0,033 A dan 0,132 A untuk coating breakdown 5% dan 10%. Hasil permodelan menyatakan bahwa nilai minimum dan maksimum distribusi arus proteksi simulasi anoda Zn untuk coating breakdown 5% berturut-turut sebesar 0,036 A dan 0,471 A, sedangkan untuk coating breakdown 10% sebesar 0,143 A dan 1,870 A. Anoda Mg untuk coating breakdown 5% berturut-turut sebesar 0,119 A dan 1,553 A, sedangkan untuk coating breakdown 10% sebesar 0,134 A dan 1,742 A. Terdapat kesesuaian antara output distribusi arus proteksi simulasi (I sim) dengan arus hasil perhitungan manual (I calc) sehingga hasil perancangan SACP tersebut layak untuk diaplikasikan. Berdasarkan analisis keekonomian, perancangan SACP selama 10 tahun memerlukan biaya peralatan, instalasi, dan inspeksi. Jika penggunaan anoda Zn dan Mg secara individu, anoda Zn lebih terjangkau dibandingkan dengan anoda Mg. Jika penggunaan anoda lebih dari satu, anoda Mg lebih terjangkau dibandingkan dengan anoda Zn.
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Corrosion protection using coating and Sacrificial Anode Cathodic Protection (SACP) is a viable corrosion control method for the tank bottom plate (soil side) of PT. X's tanks. The aim of this study is to perform SACP planning calculations for the tank bottom plate (soil side), analyze the feasibility of SACP planning using simulation or modeling, and assess the economic aspects of SACP using zinc and magnesium anodes. The study variables include a 5% coating breakdown with well-coated conditions and 10% with poor coating conditions, evenly distributing sacrificial anodes surrounding the corroded zone, and two types of sacrificial anodes: Zinc Type II and High Potential Magnesium. After conducting the Sacrificial Anode Cathodic Protection design calculations, the results were validated through simulations using ANSYS Workbench software. According to the SACP planning calculations, 1 and 7 units of Zinc anodes are required, emitting currents of 0.033 A and 0.094 A respectively for 5% and 10% coating breakdown scenarios. Similarly, 1 and 5 units of Magnesium anodes are needed, emitting currents of 0.033 A and 0.132 A respectively for the same coating breakdown scenarios. Modeling results indicate that the minimum and maximum current distribution values for Zinc anodes in simulations are 0.036 A to 0.471 A for the 5% coating breakdown and 0.143 A to 1.870 A for the 10% coating breakdown. For Magnesium anodes, the corresponding values are 0.119 A to 1.553 A for the 5% coating breakdown and 0.134 A to 1.742 A for the 10% coating breakdown. There is consistency between the simulated protection current output (I sim) and manually calculated current (I calc), confirming the feasibility of the SACP planning for practical application. Based on economic analysis, planning SACP over a 10-year period requires expenditure on equipment, installation, and inspection. When Zinc and Magnesium anodes individually, Zinc proves to be more cost-effective than Magnesium. However, when multiple anodes are used, Magnesium becomes more economically advantageous compared to Zinc.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ANSYS, Tank bottom plate (soil side), Coating, Sacrificial Anode Cathodic Protection, ANSYS, Tank bottom plate (soil side), Coating, Sacrificial Anode Cathodic Protection
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion T Technology > TA Engineering (General). Civil engineering (General) > TA467 Iron and Steel Corrosion and protection against corrosion T Technology > TA Engineering (General). Civil engineering (General) > TA660.T34 Tanks. Pressure vessels T Technology > TP Chemical technology > TP692.5 Oil and gasoline handling and storage
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Elfrida Athallah Noor Mahdyanta
Date Deposited:	05 Aug 2024 04:01
Last Modified:	05 Aug 2024 04:01
URI:	http://repository.its.ac.id/id/eprint/111142

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