Analisa Sistem Proteksi Katodik Anoda Korban Pada Jaringan Pipa Onshore Stasiun Penerima Gas Pagardewa

Dedi Saputra Sirait

Abstract


PT Perusahaan Gas Negara Tbk adalah perusahaan yang bergerak dalam bidang transportasi dan distribusi gas bumi, penggunaan jaringan pipa merupakan salah satu elemen yang memegang peranan penting sebagai rantai produksi. Stasiun Penerima Gas Pagardewa merupakan salah satu stasiun yang mendistribusikan gas bumi ke PLN melalui jaringan pipa onshore sepanjang 4875 m.

            Sebagai perlindungan pipa onshore terhadap serangan korosi untuk itu perlu dibuat perancangan proteksi katodik anoda korban dengan tujuan mengetahui berapa kebutuhan anoda korban yang diperlukan dalam melindungi pipa dari serangan korosi dalam waktu 20 tahun dan dapat mendesain sistem proteksi katodik pada pipa sepanjang 4875 m.

            Proses perancangan sistem proteksi mengacu pada NACE standard RP169-2002 “Control Of External Corrosion For Underground or submerged Metallic Piping System”. Langkah yang paling pertama adalah mengukur resistivitas tanah dengan metode Wenner kemudian dilanjutkan perancangan sesuai dengan ketentuan NACE standard, melakukan Survey Potensial Pipa dan pH Tanah.

Hasil yang didapat dalam perancangan katodik proteksi anoda korban untuk panjang pipa 4875 m adalah Nilai resistivitas tanah terukur sebesar 2160.32 Ohm.cm, anoda yang dipakai untuk Pipa API 5L Grade B, NPS 12" Sch.80, SMLS adalah Magnesium, Anoda yang dibutuhkan 41 buah (@ 14.5 kg) untuk usia proteksi 19,8 tahun (waktu desain pipa 20 tahun) dengan penurunan potensial dari -121 mV menjadi -902 mV, dan pemasangan anoda dilakukan secara horizontal

References


Bahadori, A. (2017). Chapter 4 - Transportation Pipelines Pressure Testing . Oil and Gas Pipelines and Piping Systems , 93–117. https://doi.org/http://dx.doi.org/10.1016/B978-0-12-803777-5.00004-6

Brock, J., & Zaroog, O. S. (2017). Copper Alloys: Corrosion. Reference Module in Materials Science and Materials Engineering, (February 2016), 1–4. https://doi.org/10.1016/B978-0-12-803581-8.02892-7

Bu, Y., & Ao, J.-P. (2017). A review on photoelectrochemical cathodic protection semiconductor thin films for metals. Green Energy & Environment. https://doi.org/10.1016/j.gee.2017.02.003

Bu, Y., Chen, Z., Ao, J., Hou, J., & Sun, M. (2018). Study of the photoelectrochemical cathodic protection mechanism for steel based on the SrTiO3-TiO2composite. Journal of Alloys and Compounds, 731, 1214–1224. https://doi.org/10.1016/j.jallcom.2017.10.165

Buchheit, R. G. (2018). Corrosion Resistant Coatings and Paints. Handbook of Environmental Degradation of Materials (Third Edit). Elsevier Inc. https://doi.org/10.1016/B978-0-323-52472-8.00022-8

Casal, J. (2018). Transportation of Hazardous Materials. Evaluation of the Effects and Consequences of Major Accidents in Industrial Plants. https://doi.org/10.1016/B978-0-444-63883-0.00012-5

Dai, M., Liu, J., Huang, F., Zhang, Y., & Cheng, Y. F. (2018). Effect of cathodic protection potential fluctuations on pitting corrosion of X100 pipeline steel in acidic soil environment. Corrosion Science. https://doi.org/10.1016/j.corsci.2018.08.040

Genchev, G., & Erbe, A. (2017). Sour Gas Corrosion—Corrosion of Steels and Other Metallic Materials in Aqueous Environments Containing H 2 S. Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier. https://doi.org/10.1016/B978-0-12-409547-2.11546-X

Lazzari, L. (2017). Cathodic Protection: Basic Principles. Reference Module in Chemistry, Molecular Sciences and Chemical Engineering. Elsevier. https://doi.org/10.1016/B978-0-12-409547-2.13445-6

Mahmoodian, M. (2018). Introduction. Reliability and Maintainability of In-Service Pipelines. https://doi.org/10.1016/B978-0-12-813578-5.00001-9

Makhlouf, A. S. H., Herrera, V., & Muñoz, E. (2018). Corrosion and protection of the metallic structures in the petroleum industry due to corrosion and the techniques for protection. Handbook of Materials Failure Analysis. Elsevier Ltd. https://doi.org/10.1016/B978-0-08-101928-3.00006-9

Shekari, E., Khan, F., & Ahmed, S. (2017). Economic risk analysis of pitting corrosion in process facilities. International Journal of Pressure Vessels and Piping, 157, 51–62. https://doi.org/10.1016/j.ijpvp.2017.08.005

Simpson, D. A. (2017). Surface Engineering Concepts. Practical Onshore Gas Field Engineering. https://doi.org/10.1016/b978-0-12-813022-3.00004-3

Singh, R. (2014). Hazards and Threats to a Pipeline System. Pipeline Integrity Handbook. https://doi.org/10.1016/B978-0-12-387825-0.00005-3

Singh, R. (2017). Corrosion and Corrosion Protection. Pipeline Integrity Handbook, 241–270. https://doi.org/10.1016/B978-0-12-813045-2.00017-X

Sudarsan, V. (2017). Materials for Hostile Chemical Environments. Materials Under Extreme Conditions. Elsevier Inc. https://doi.org/10.1016/B978-0-12-801300-7.00004-8

Sutton, I. (2017a). Inspection. Plant Design and Operations, 335–352. https://doi.org/10.1016/B978-0-12-812883-1.00011-5

Sutton, I. (2017b). Transportation. Plant Design and Operations. https://doi.org/10.1016/B978-0-12-812883-1.00007-3

Vanaei, H. R., Eslami, A., & Egbewande, A. (2017). A review on pipeline corrosion, in-line inspection (ILI), and corrosion growth rate models. International Journal of Pressure Vessels and Piping, 149(Ili), 43–54. ttps://doi.org/10.1016/j.ijpvp.2016.11.007

Xu, L., & Cheng, Y. F. (2017). A finite element based model for prediction of corrosion defect growth on pipelines. International Journal of Pressure Vessels and Piping, 153, 70–79. https://doi.org/10.1016/j.ijpvp.2017.05.002




DOI: http://dx.doi.org/10.22441/jtm.v8i3.5025

Refbacks

  • There are currently no refbacks.


Copyright (c) 2020 Jurnal Teknik Mesin

Jurnal Teknik Mesin (JTM)
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Mercu Buana
Jl. Meruya Selatan No. 01, Kembangan, Jakarta Barat 11650, Indonesia
Email: [email protected]
Telp.: 021-5840815/ 021-5840816 (Hunting)
Fax.: 021-5871335

JTM is indexed by the following abstracting and indexing services:

 

 

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

View My Stats