Santoso, Arini (2015) Pengaruh Variasi Resistivitas Dan Kadar Air Tanah Terhadap Arus Proteksi Sistem Impressed Current Cathodic Protection (ICCP) Pada Pipa Api 5L Grade B Dengan Variasi Goresan Lapis Lindung. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Metode yang sering kali digunakan untuk mengurangi korosi pada
pipa bawah tanah adalah pemberian lapis lindung dan instalasi ICCP.
Faktor lingkungan yang menjadi salah satu indikator utama terhadap
korosi pada tanah adalah resistivitas dan kadar air tanah. Tujuan
penelitian, untuk menganalisa pengaruh resistivitas dan kadar air tanah
terhadap kebutuhan arus proteksi sistem ICCP pada material pipa API
5L Grade B sebagai katoda yang yang diberi variasi coating (coating
seluruhnya, tanpa coating dan cacat gores berbentuk persegi dengan luas
500 mm2). Variasi kadar air 0% (kondisi kering) dan 25%. Anoda
menggunakan grafit, rectifiernya sebagai penyearah arus dan elektroda
referensi Cu/CuSO4 sebagai elektroda acuan. Pengukuran arus proteksi
ini dilakukan selama 7 hari dengan pengambilan data setiap hari. Dari
hasil penelitian terlihat bahwa dengan bertambahnya kadar air dalam
tanah akan menyebabkan nilai resistivitas tanah akan menurun, karena
bertambahnya jumlah air dalam tanah akan mempermudah aliran arus.
Nilai resistivitas tanah yang semakin tinggi akan membutuhkan arus
proteksi yang rendah, dikarenakan pada tanah dengan nilai resistivitas
tinggi memiliki tahanan yang tinggi (lemah menghantar listrik atau
bersifat isolator). Sedangkan dengan kadar air tanah yang tinggi nilai
arus proteksi semakin meningkat, karena air mempermudah ionisasi
elektron dalam tanah, sehingga mempermudah aliran arus.
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The frequent method that been used for reducing corotion in
underground pipe by giving coat and ICCP installation. The
environment factor become the most indicator towards ground corotion
is the resistivity and soil water content. The purpose of this research are
to analyze the resistivity effect and soil water content towards the
requirement of ICCP current protection system at pipe material API 5L
Grade B as a chatode that been add with the coating variation (full
coating, without coating and square form scratch defect with 500 mm2
wide). The 0% of water content variation (dry condition) and 25%. We
use graphite as an anode and current rectifier and Cu/CuSO4 electrode
as a reference. The measurement of this current protection been held for
7 days with data retrieval everyday. From this research it show us that
the increase of soil water content level make the soil resistivity reduce,
because the increasing of the water level in the soil can ease the current.
The soil resistivity number can be higher but it needs the low current
protection, this is all due to the soil with the higher resistivity have the
high resistance (too weak to deliver the electric current or
isolator).Meanwhile with the high level of soil water content, the
number of the current protection will be increase, this is all due to the
water can easily absorb the ionisation of the electron in the soil so it can
ease the current flow.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSMt 620.112 23 San p |
| Uncontrolled Keywords: | Resistivitas Tanah, Kadar Air Tanah, Goresan Lapis Lindung, Pipa API 5L Grade B, Arus Proteksi dan ICCP |
| Subjects: | T Technology > TS Manufactures > TS280 Pipe Bending, Tube Bending |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Yeni Anita Gonti |
| Date Deposited: | 14 Feb 2020 02:59 |
| Last Modified: | 14 Feb 2020 02:59 |
| URI: | http://repository.its.ac.id/id/eprint/74932 |
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