Pengaruh Variasi Coating dan Penempatan Anoda Aluminium Pada Sistem SACP Pipa Baja API 5L Grade B di Lingkungan Air Payau

Khakim, Ahmad Baihaqi Al (2024) Pengaruh Variasi Coating dan Penempatan Anoda Aluminium Pada Sistem SACP Pipa Baja API 5L Grade B di Lingkungan Air Payau. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pertumbuhan industri yang tersebar di seluruh wilayah seperti pada tepi pantai dengan lingkungan air payau.menyebabkan banyak permasalahan industri seperti korosi. Proteksi katodik anoda korban merupakan salah satu metode untuk perlindungan korosi. Sistem poteksi katodik anoda tumbal memberikan perlindungan korosi menggunakan anoda yang lebih reaktif melepaskan elektron untuk memproteksi katoda. Tujuan penelitian ini untuk menganalisis
pengaruh lapisan coating dan penempatan anoda korban aluminium pada sistem proteksi katodik pipa Baja API 5L Grade B dengan variasi coating. Coating yang digunakan adalah coating zinc chromate dan enamel gloss. Pada variasi anoda terdapat variasi 1 anoda yang berjarak 0.75 m dari ujung pipa dan 2 anoda yang berjarak 0.5 m dari ujung pipa. Pada penelitian ini dilakukan pengujian Optical Emission Spectrometry (OES) untuk mengetahui komposisi dari anoda korban yang digunakan dan dilakukan pengukuran data lingkungan air payau yaitu pH, temperatur, salinitas, dissolved oxygen, resistivitas. Pengukuran potensial
proteksi pipa dilakukan untuk mengetahui apakah pipa sesuai dengan kriteria proteksi standar DNV RP B401 sebesar -800 mV sampai -1050 mV vs Ag/AgCl. Potensial proteksi pipa coating
1 anoda dan 2 anoda telah masuk kriteria proteksi dengan kategori terproteksi yang memiliki rata rata potensial proteksi sebesar -850,06 mV dan -834,53 mV. Namun, pipa non coating 1 anoda dan 2 anoda belum masuk kriteria proteksi dengan kategori terproteksi sebagian yang memiliki rata rata potensial proteksi sebesar -763,46 mV dan -743,53 mV. Pemberian lapisan coating efektif mengurangi efek terjadinya korosi pada permukaan pipa serta mengurangi laju konsumsi anoda dengan sedikitnya berat anoda yang terpakai pada pipa variasi coating. Penggunaan 1 anoda memberikan arus proteksi lebih memusat dan terkonsentrasi. Dengan arus proteksi yang lebih terkonsentrasi, maka menghasilkan arus pada titik tersebut semakin besar dan potensial proteksi semakin negatif sehingga memberikan proteksi yang lebih baik. Oleh
karena itu, pipa variasi 1 anoda memberikan proteksi yang lebih baik dibandingkan dengan 2 anoda.
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The growth of industries spread across regions, such as coastal areas with brackish water environments, has led to various industrial issues, including corrosion. Sacrificial anode cathodic protection is one method employed to safeguard against corrosion. The sacrificial anode cathodic protection system provides corrosion protection by using a more reactive anode that releases electrons to protect the cathode. The aim of this research is to analyze the influence of coating layers and the placement of aluminum sacrificial anodes in the cathodic protection system of API 5L Grade B steel pipes using coating variations such as zinc chromate and enamel gloss, as well as non-coating variations. In the anode variations, there are two
configurations: one with an anode positioned 0.75 meters from the pipe's end and another with an anode positioned 0.5 meters from the pipe's end. The study involves testing Optical Emission Spectrometry (OES) to determine the composition of the sacrificial anodes used and measuring
brackish water environmental data, including pH, temperature, salinity, dissolved oxygen, and resistivity. The measurement of pipe protection potential is conducted to assess whether the pipe meets the DNV RP B401 standard protection criteria, ranging from -800 mV to -1050 mV
vs. Ag/AgCl. The coating 1 anode and 2 anode pipe protection potentials have met the protection criteria with the "well-protected" category, having average protection potentials of - 850.06 mV and -834.53 mV, respectively. However, the non-coating 1 anode and 2 anode pipes have not met the protection criteria, falling into the "partially protected" category with average protection potentials of -763.46 mV and -743.53 mV, respectively. The application of coating
layers effectively reduces the occurrence of corrosion on the pipe surface and decreases the anode consumption rate, with a minimal weight of anode utilized in the coated pipe variations. The influence of anode placement reveals that pipe variation 1 with a single anode provides better protection compared to variation 2 with two anodes. The use of a single anode concentrates and centralizes the protective current, resulting in a larger current at that point and a more negative protection potential, thus providing better protection.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Aluminium, Brackish Water, Corrosion, SACP, Aluminium, Air Payau, Korosi, SACP.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives T Technology > TA Engineering (General). Civil engineering (General) > TA418.75 Corrosion-resistant materials T Technology > TA Engineering (General). Civil engineering (General) > TA418.9.C57 Coatings T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Ahmad Baihaqi Al Khakim
Date Deposited:	05 Feb 2024 04:06
Last Modified:	05 Feb 2024 04:06
URI:	http://repository.its.ac.id/id/eprint/106074

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