Important: AMPP System Update February 27 - March 11 – Limited Access to AMPP Digital Services. Act Now to Avoid Disruptions! - Learn More
Atmospheric corrosion proceeds via several processes that proceed in sequence and/or parallelacross multiple classes of matter (the atmosphere, condensed aqueous solution, polymer coatings, oxidescales, precipitated salts, and microstructurally heterogeneous metal alloys). Multiple physical andchemical phenomena contribute to the process of corrosion, including mass-transport, electrochemicaleffects, metal dissolution, grain-boundary transport, etc. For this reason, it is difficult to directly predict,using fundamental physics or chemical principles, the corrosion rate of a metal in its environment.
We are unable to complete this action. Please try again at a later time.
If this error continues to occur, please contact AMPP Customer Support for assistance.
Error Message:
Please login to use Standards Credits*
* AMPP Members receive Standards Credits in order to redeem eligible Standards and Reports in the Store
You are not a Member.
AMPP Members enjoy many benefits, including Standards Credits which can be used to redeem eligible Standards and Reports in the Store.
You can visit the Membership Page to learn about the benefits of membership.
You have previously purchased this item.
Go to Downloadable Products in your AMPP Store profile to find this item.
You do not have sufficient Standards Credits to claim this item.
Click on 'ADD TO CART' to purchase this item.
Your Standards Credit(s)
1
Remaining Credits
0
Please review your transaction.
Click on 'REDEEM' to use your Standards Credits to claim this item.
You have successfully redeemed:
Go to Downloadable Products in your AMPP Store Profile to find and download this item.
The work here is the culmination of many years of prior effort in the development of an atmospheric corrosion model and accompanying sensors. Atmospheric corrosion is a complicated process where many factors interact to determine if it occurs and its severity. These factors can be separated into three general categories: environmental, surface salts, and materials.
During FY2003, a feasibility study evaluated the condition of coatings on a crude oil loading berth, analyzed the ramifications of coating failure, and performed life cycle economic comparisons of maintenance coating alternatives. The subject paper presents a summary of the coating inspection results as well as an alternative method to determine the effect of coating failure and corrosion on marine loading berths.
The essence of this paper is to talk about internal corrosion found in deadleg piping at the Enbridge Gas Transmission, & Midstream (GTM) Egan Hub Partners Storage Facility and especially how the corrosion was evaluated after the deadlegs were removed. The salt dome cavern storage facility is in south central Louisiana. The internal corrosion was found in the piping that comes from the storage caverns and goes through pressure reduction stations and then through dehydrations systems.
This paper focuses on the corrosion behaviour of high strength flexible wire material immersed in de-aerated 3.5% NaCl solution under 40bar CO2 partial pressure at different test temperatures: 30°C, 40°C and 60°C; different CO2 fluxflux: 0.1ml/min/cm2 and 0.0008ml/min/cm2; different volume of solution to surface area of sample (V/S) ratios: 1ml/cm2 and 0.3ml/cm2 and test durations: 2 and 4 months. The tests were carried out in a lab-scale test system designed and built at TWI Ltd for the simulation of complex annulus environments. The corrosion rates and the maximum depth of the localized attack for tests at different temperatures were recorded as: 30°C>60°C>40°C. This is linked with the stability, structure and thickness of the precipitated iron carbonate scaling. The lowest corrosion rate was recorded for the test with the lowest V/S and slowest CO2 flux, linked with a thin and compact iron carbonate layer. The effect of the flow and degree of confinement are significant at high CO2 partial pressures.
Use of corrosion inhibitors (CI) to protect metallic equipment, especially carbon steel pipelines from corrosion has long been an established, effective, economic, and hence globally accepted technique. The oil and gas industry has been using CIs to protect the pipelines under various exposure conditions including sour and sweet services . Complete understanding of corrosion mechanisms under sour conditions and protecting pipeline steel under such conditions has always been a challenging task due to the complexity of such systems.