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Field cathodic protection study in the specific artic conditions of the Yamal gas carrier terminal
RISE - Research Institutes of Sweden, Materials and Production, KIMAB. (Institut de la Corrrosion)
TOTAL, France.
Yamal LNG Marine, Russia.
Yamal LNG Marine, Russia.
2018 (English)In: NACE - International Corrosion Conference SeriesVolume 2018-April, 2018Corrosion Conference and Expo 2018; Phoenix; United States; 15 April 2018 through 19 April 2018;, National Assoc. of Corrosion Engineers International , 2018Conference paper, Published paper (Refereed)
Abstract [en]

For most projects, cathodic protection (CP) design can be performed using CP standards or existing data from literature and field feed-back. It was not the case for the particular environment of the YAMAL gas carrier terminal project, planned in Sabetta (Siberia - Federation of Russia). This particular area is located between the Kara sea and a river mouth in Yamal peninsula (Artic region). It involves very different conditions in terms of salinity, temperature, liquid/ice phases, all depending on icing/deicing seasons and on the water depth. These very specific conditions can hardly be simulated at laboratory scale and required a specific corrosion and CP study with measurements on site. The global aim of this quantitative study was to collect field data to help at defining an adapted corrosion protection system for carbon steel immerged structure (e. g. berths), and to forecast the related corrosion risks. Regarding the extreme conditions of the site, the main challenge was to design adapted arrays containing corrosion and CP sensors (to be deployed on site), to get representative quantitative data. All systems have been qualified at laboratory scale before use on field site. The deployment was successful and allowed getting actual polarization curves, and local initial corrosion data. In parallel, the stability of zinc galvanic anodes has been evaluated in this resistive environment. For both corrosion and CP data, different results have been highlighted for surface and bottom waters, and for ice & liquid phases. Modelling can now be used to assess the efficiency and select the CP system (i. e. galvanic anode or impressed current)

Place, publisher, year, edition, pages
National Assoc. of Corrosion Engineers International , 2018.
Keywords [en]
Carbon steel, Cathodic protection, Cathodic protection and corrosion sensors, Cold seawater, Corrosion, Field measurements, Gas carrier terminal berth, Icing, Anodes, Localized corrosion, Seawater corrosion, Steel corrosion, Corrosion protection system, Corrosion sensor, Extreme conditions, Field measurement, Gas carriers, Polarization curves, Quantitative study
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-40006Scopus ID: 2-s2.0-85053555127ISBN: 9781510864405 (print)OAI: oai:DiVA.org:ri-40006DiVA, id: diva2:1361582
Conference
NACE - International Corrosion Conference Series Volume 2018-April, 2018 Corrosion Conference and Expo 2018; Phoenix; United States; 15 April 2018 through 19 April 2018;
Available from: 2019-10-16 Created: 2019-10-16 Last updated: 2019-10-16Bibliographically approved

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