Adli, Muhammad Razkan (2019) Analisis Pengaruh Resistivitas Tanah Dan Rasio Volume Backfill Per Anoda Terhadap Potensial Dan Arus Proteksi Rangkaian Sacrificial Anode Cathodic Protection (SACP) Pada Pipa Baja API 5L Grade B. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Korosi merupakan permasalahan yang sering terjadi
terjadi pada logam, khususnya pada pipa underground yang
rentan mengalami korosi yang diakibatkan resistivitas tanah, pH tanah, temperature, kandungan air, dan lain sebagainya. Untuk mengatasi permasalah tersebut digunakan system proteksi katodik anoda korban (SACP). Metode ini dipilih karena merupakan salah satu metode yang murah dan efektif dalam mencegah korosi, serta arus proteksi yang diberikan ke dalam system dapat dikontrol dengan cukup mudah. Anoda yang digunakan dalam penelitian ini adalah anoda seng/zinc yang sesuai dengan spesifikasi dan akan dibungkus dengan tiga backfill yang berbeda rasio volume backfill dengan anodanya. Katoda yang digunakan adalah pipa baja API 5L Grade B. system proteksi katodik tersebut akan ditanamkan ke dalam tiga
jenis media tanah yang berbeda resistivitasnya, yaitu media tanah humus, tanah pasir, dan tanah liat. Setelah rangkaian dibuat, proses selanjutnya adalah mengukur potensial dan arus proteksi dalam rangkaian. Tujuan dari penelitian ini kebutuhan arus proteksi media tanah yang berbeda resistivitas dengan variasi rasio volume backfill terhadap anoda sebesar 2:1, 1:1, dan 0,5:1. Hasil dari resistivitas ketiga tanah yaitu tanah humus,
tanah liat, dan tanah pasir sebesar 3,68 ohm.m; 102,32 ohm.m; dan 302,19 ohm.m semakin tinggi kandungan air dalam tanah semakin rendah resistivitasnya. Potensial dan arus proteksi pada pipa di tiap tanah berbeda-beda, pada tanah humus didapati potensial dan arus proteksi pipa sebesar -1011,29 mV dan 1,3 mA; pada tanah liat sebesar -1007,13 dan 1,29 mA; pada tanah pasir sebesar -1002 mV dan 1,26 mA, semakin tinggi volume backfill, semakin rendah kebutuhan arus proteksi pada pipa dan berdasarkan data yang ada, semua pipa terproteksi karena berada pada rentang potensial proteksi standar NACE yaitu -1100 mV s.d. -850mmV dan zinc merupakan anoda yang tepatbagi rangkaian SACP pada ketiga tanah.
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Corrosion is a problem that often occurs in metals,
especially in underground pipes that are susceptible to corrosion due to soil resistivity, soil pH, temperature, air composition, and so on. To overcome this problem a sacrificial anode cathodic protection system (SACP) was used. This method was chosen because it is one of the inexpensive and effective methods of preventing corrosion, and the current protection provided into the system can be controlled quite easily. The anode used in this study is the zinc anode that is in accordance with the specifications and will be wrapped in three stacks with different volume volume ratio with the anode. The cathode used is API 5L GradeB steel pipe. This cathodic protection system will be implanted into three different types of soil media with resistivity, namely humus soil media, sand soil, and clay. After the circuit is made, the next process is to calculate the potential and protection in the circuit. The purpose of this study is the need for different soil resistivity media protection currents with variations in the ratio of volume of backfill to anodes of 2:1, 1:1, and 0.5:1. The Results from the three different resistivity of soil which are humus, clay, and soil sand are 3.68 ohm.m; 102.32 ohm.m; and lower the resistivity. Potential and protection currents in pipes in each soil are vary, in humus type soil, the potential and the pipe protection current is -1011.29 mV and 1.3 mA; on clay is -1007.13 and 1.29 mA; on sand soils of -1002 mV and 1.26 mA, the higher the volume of backfill, the lower the need for protection current in the pipeline and based on existing data, all pipes are protected because they correspond to the standard potential protection potential of NACE which is -1100 mV. -850mmV and zinc are the right anodes for the SACP circuit on three soils.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | SACP, backfill, resistivitas tanah, arus proteksi, potensial proteksi |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.74 Corrosion and anti-corrosives |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Razkan Adli |
| Date Deposited: | 22 Jul 2026 03:55 |
| Last Modified: | 22 Jul 2026 03:55 |
| URI: | http://repository.its.ac.id/id/eprint/65724 |
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