Menu
Search
Filters
Close
Menu

09284 Effect of Acetic Acid on Propagation and Stifling of Localized Attacks in CO2 Corrosion of Carbon Steel

Picture for 09284 Effect of Acetic Acid on Propagation and Stifling of Localized Attacks in CO2 Corrosion of Car
Available for download
Product Number: 51300-09284-SG
ISBN: 09284 2009 CP
Author: Egil Gulbrandsen, Jamel Amri and Ricardo Nogueira
Publication Date: 2009
$0.00
$20.00
$20.00
The presence of acetic acid (HAc) has been identified as one factor that may contribute to enhance localized top-of-line corrosion attacks in gas condensate pipelines. The role of HAc on the growth of localized attacks in CO2 corrosion of carbon steel pipelines was studied by means of a pre-initiated localized attack electrode assembly (“artificial pit electrode”). The current flowing between the localized attack and the outer surface was measured with a zero resistance ammeter. It is shown that the corrosion potential increases with increasing HAc concentration. Depletion of HAc inside the attack imposed a potential difference that triggered the propagation of the attack at room temperature. The attack did not propagate in absence of HAc. The growth of the attack was self-sustained only to a certain depth, beyond which the dissolution current at the bottom of the attack vanished. This is in good agreement with field observations in the case of top-of-line corrosion phenomena.

Keywords: CO2 corrosion, pipeline steel, acetic acid, localized attacks
The presence of acetic acid (HAc) has been identified as one factor that may contribute to enhance localized top-of-line corrosion attacks in gas condensate pipelines. The role of HAc on the growth of localized attacks in CO2 corrosion of carbon steel pipelines was studied by means of a pre-initiated localized attack electrode assembly (“artificial pit electrode”). The current flowing between the localized attack and the outer surface was measured with a zero resistance ammeter. It is shown that the corrosion potential increases with increasing HAc concentration. Depletion of HAc inside the attack imposed a potential difference that triggered the propagation of the attack at room temperature. The attack did not propagate in absence of HAc. The growth of the attack was self-sustained only to a certain depth, beyond which the dissolution current at the bottom of the attack vanished. This is in good agreement with field observations in the case of top-of-line corrosion phenomena.

Keywords: CO2 corrosion, pipeline steel, acetic acid, localized attacks
Product tags
Also Purchased
Picture for 99024 ROLE OF FREE ACETIC ACID ON THE
Available for download

99024 ROLE OF FREE ACETIC ACID ON THE CO2 CORROSION OF STEELS

Product Number: 51300-99024-SG
ISBN: 99024 1999 CP
Author: Jean-Louis Crolet, Nicolas Thevenot, Arne Dugstad
$20.00
Picture for 06364 SOLUTION CHEMISTRY EFFECTS ON CORROSION
Available for download

06364 SOLUTION CHEMISTRY EFFECTS ON CORROSION OF CARBON STEELS IN PRESENCE OF CO2 AND ACETIC ACID

Product Number: 51300-06364-SG
ISBN: 06364 2006 CP
Author: Egil Gulbrandsen, Katerina Bilkova
$20.00
Picture for 07312 THE INFLUENCE OF CONDENSATION RATE AND ACETIC ACID CONCENTRATION ON TOL-CORROSION IN MULTIPHAS
Available for download

07312 THE INFLUENCE OF CONDENSATION RATE AND ACETIC ACID CONCENTRATION ON TOL-CORROSION IN MULTIPHASE PIPELINES

Product Number: 51300-07312-SG
ISBN: 07312 2007 CP
Author: T. R. Andersen. A. M. K. Halvorsen, A. Valle. G. P. Kojen, and A. Dugstad
Publication Date: 2007
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support