Menu
Search
Filters
Close
Menu

Save 20% on select titles with code HIDDEN24 - Shop The Sale Now

Intergranular Stress Corrosion Cracking (IGSCC) of Carbon Steel Equipment

Picture for Intergranular Stress Corrosion Cracking (IGSCC) of Carbon Steel Equipment
Available for download

At the time of a recent maintenance shutdown, cracking was discovered in the repads and parent material in the vicinity of several nozzles along the bottom of two in-situ production treater vessels. Some of the cracks were reported to be through-wall. The vessels were commissioned in 2009 and had been in service for about 13 years before the cracks manifested as through-wall.

Product Number: 51323-19173-SG
Author: Duane Serate, Simon Yuen, Yashar Behnamian, Jeffrey Venezuela
Publication Date: 2023
$0.00
$20.00
$20.00

Over the last few years, an intergranular stress-corrosion cracking (IGSCC) mechanism has been observed for carbon steel pipelines and piping, particularly in in-situ thermal upstream production. All the cracks manifested on the bare (uncoated) outside diameter (OD) surface of the steel, and all were associated with wet mineral wool insulation. Common features include an operating temperature between 70°C and 160°C, intergranular cracking morphology, and exposure to wet mineral wool insulation with vintage post-2003.
Recently, a similar IGSCC was observed in pressure vessel grade A516 Gr 70N steel. The potential of having this mechanism manifest in pressure vessels is of some concern, as the span of susceptible equipment goes beyond upstream production assets but to the larger oil and gas industry that includes upgrading, refining, terminals and distribution, and perhaps extending to other industries where the conditions listed above exist.


This paper summarizes the investigation of the external IGSCC found on two carbon steel pressure vessels, with the intent of increasing the awareness of the industry with this new damage mechanism.

Over the last few years, an intergranular stress-corrosion cracking (IGSCC) mechanism has been observed for carbon steel pipelines and piping, particularly in in-situ thermal upstream production. All the cracks manifested on the bare (uncoated) outside diameter (OD) surface of the steel, and all were associated with wet mineral wool insulation. Common features include an operating temperature between 70°C and 160°C, intergranular cracking morphology, and exposure to wet mineral wool insulation with vintage post-2003.
Recently, a similar IGSCC was observed in pressure vessel grade A516 Gr 70N steel. The potential of having this mechanism manifest in pressure vessels is of some concern, as the span of susceptible equipment goes beyond upstream production assets but to the larger oil and gas industry that includes upgrading, refining, terminals and distribution, and perhaps extending to other industries where the conditions listed above exist.


This paper summarizes the investigation of the external IGSCC found on two carbon steel pressure vessels, with the intent of increasing the awareness of the industry with this new damage mechanism.

Product tags
Also Purchased
Picture for Theory and testing of composite materials on Stress Corrosion Cracking
Available for download

Theory and testing of composite materials on Stress Corrosion Cracking

Product Number: 51323-19002-SG
Author: Casey Whalen, Omar Ramirez
Publication Date: 2023
$20.00

Stress Corrosion Cracking, or SCC, is part of a group of cracks commonly known as Environmental Cracking. Additional types of cracks found in this group include corrosion fatigue and hydrogen embrittlement. It is generally known that SCC requires three factors to be present to form and continue growing. The first is a susceptible material. In the world of pipelines, carbon steel is quite susceptible to corrosion when buried but is typically protected from this threat utilizing a combination of external coatings in cathodic protection.
Picture for On the applicability of welded J55 line pipe steel for underground hydrogen storage
Available for download

On the applicability of welded J55 line pipe steel for underground hydrogen storage

Product Number: 51323-19131-SG
Author: Bernd Loder, Gregor Mori, Jürgen Klarner, Michael Fiedler, Thomas Willidal
Publication Date: 2023
$20.00

Corrosive environmental media may lead to a significant degradation of the mechanical properties of the materials. Individual experimental investigation and analysis concepts are available at the Institute of General and Analytical Chemistry for the evaluation of different materials under pressurized hydrogen. Hydrogen technologies will enable decarbonization.
Picture for 51393-069-Prediction of CO2 Corrosion of Carbon Steel
Available for download

51393-069-Prediction of CO2 Corrosion of Carbon Steel

Product Number: 51393-069-SG
Author: C. de Waard, U.Lotz
Publication Date: 1993
$20.00

Various aspects of the mechanism of C02 corrosion are reviewed, together with a discussion about the validity of a number of simplifications which can be used with models for predicting the corrosion rate. A "worst case" rate can often be predicted. To this end a number of parameters has been identified, the

influence of which has to be accounted for. The effects of protective corrosion product layers and of dissolved corrosion product on pH needs to be included in the prediction. More quantitative information about the effect of flowpattern and flowrate is needed. For wet gas pipelines, the prediction of the effect of injection of glycol as a measure against corrosion is of special interest. Predictive models consisting of a system of rules and equations can be conveniently developed in computer spreadsheets.

 
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