Kirana, Iftinah Tisti Sasi (2024) Pengaruh Variasi Coating dan Penempatan Anoda Zn terhadap Sistem Proteksi SACP Pipa Baja API 5L Grade B Media Air Payau. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Lingkungan dengan memiliki kadar garam yang cenderung lebih reaktif seperti air payau. Sacrificial Anode Cathodic Protection (SACP) adalah salah satu metode efektif untuk perlindungan korosi dalam air. Prinsip dari SACP adalah menggunakan anoda dengan nilai potensial yang lebih rendah untuk dikorbankan sehingga dapat memproteksi katoda. Pada penelitian ini terdapat variasi coating yaitu, coating dan tanpa coating, dan variasi penempatan anoda yaitu 1 anoda dan 2 anoda. Penelitian ini bertujuan untuk menganalisis pengaruh lapisan coating dan pengaruh penempatan anoda Zn pada sistem proteksi katodik pipa Baja API 5L Grade B sepanjang 1.5 m dengan variasi coating dan tanpa coating dan variasi penempatan 1 anoda dengan jarak 0,75m dari ujung pipa serta 2 anoda dengan jarak 0,5m dari ujung pipa. Penelitian ini menggunakan kriteria proteksi yaitu -800 mV sampai -1050 mV vs. Ag/AgCl. Kemudian, dilakukan pengukuran data lingkungan tempaat penelitian yaitu resistivitas, pH, Salinitas, Temperatur, dan Dissolved Oxygen. Sesuai hasil pengukuran potensial proteksi seluruh spesimen masuk dalam kriteria proteksi sesuai dengan standar DNV RP B401 dan termasuk dalam kondisi terproteksi secara katodik. Nilai rata-rata potensial proteksi pipa variasi coating dengan variasi penempatan 1 anoda dan 2 anoda sebesar -944.400 dan -947.633 mV. Nilai rata rata potensial proteksi pipa variasi tanpa coating dengan penempatan 1 anoda dan penempatan 2 anoda adalah sebesar -897.233 mV dan -899.467 mV. Hasil penelitian menunjukkan bahwa pengaruh lapisan coating terhadap sistem proteksi katodik anoda tumbal yang diberikan adalah memberikan umur anoda lebih lama yang ditunjukkan dari berat anoda yang terkonsumsi lebih kecil daripada tanpa coating. Salinitas berpengaruh pada lapisan coating dimana dapat merusak lapisan sehingga arus anoda dapat mengalir dan memproteksi spesimen pipa Baja API 5L Grade B. Pengaruh variasi penempatan anoda terhadap sistem proteksi katodik anoda tumbal yang diberikan adalah semakin bertambah jumlah anoda dengan jarak yang pendek maka dapat memberikan hasil proteksi yang lebih merata karena semakin sedikit hambatan jarak untuk mengalirkan arus proteksi. Berat anoda yang terkonsumsi pada pipa penempatan 1 anoda lebih kecil daripada penempatan 2 anoda
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Environments with salt content tend to be more reactive like brackish water. Sacrificial Anode Cathodic Protection (SACP) is one of the effective methods for corrosion protection in water. The principle of SACP is to use an anode with a lower potential value to be sacrificed so as to protect the cathode. In this study, there are coating variations, namely, coating and no coating, and variations in anode placement, namely 1 anode and 2 anodes. This study aims to analyze the effect of coating layer and the effect of Zn anode placement on the cathodic protection system of API 5L Grade B Steel pipe along 1.5 m with coating variations and without coating and variations in the placement of 1 anode with a distance of 0.75m from the end of the pipe and 2 anodes with a distance of 0.5m from the end of the pipe. This research uses protection criteria of -800 mV to -1050 mV vs. Ag/AgCl. Then, environmental data measurements were made at the research site, namely resistivity, pH, salinity, temperature, and Dissolved Oxygen. According to the results of the measurement of the protection potential of all specimens included in the protection criteria in accordance with the DNV RP B401 standard and included in the cathodically protected condition. The average value of pipe protection potential for coating variations with variations in the placement of 1 anode and 2 anodes is -944.400 mV and -947.633 mV. The average value of the protection potential of the pipe variation without coating with the placement of 1 anode and the placement of 2 anodes is -897.233 mV and -899.467 mV. The results showed that the effect of the coating layer on the cathodic protection system of a given sacrificial anode is to provide a longer anode life as indicated by the weight of the anode that is consumed smaller than without coating. Salinity affects the coating layer which can damage the coating so that the anode current can flow and protect the API 5L Grade B steel pipe specimen. The effect of variations in anode placement on the cathodic protection system of a given sacrificial anode is that the increasing number of anodes with a short distance can provide more even protection results because there is less distance resistance to flow the protection current. The weight of the anode consumed in the pipe placement of 1 anode is smaller than the placement of 2 anodes.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Cathodic Protection, Coating, Sacrificial Anodes, SACP, Anoda Korban, Proteksi Katodik |
| 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: | Iftinah Tisti Sasi Kirana |
| Date Deposited: | 05 Feb 2024 04:16 |
| Last Modified: | 05 Feb 2024 04:16 |
| URI: | http://repository.its.ac.id/id/eprint/106051 |
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