Use code FLASH20 at checkout for 20% off all eBooks and eCourses
This paper describes two new and complementary mechanical testing methods recently applied to vintage pipeline steels as input to integrity management.
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.
Use this error code for reference:
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.
Information is presented on field data collection and management, data correlation, data analysis, and future considerations for stray current monitoring.
Estimating corrosion growth rates for underground pipelines is a challenging problem. There are confounding variables with complex interaction effects that may result in unexpected outcomes. For instance, the relationship between soil conditions and AC interference is highly non-linear and challenging to model. This work expands upon prior work using a suite of machine learning tools to estimate corrosion rates. However, instead of estimating a single corrosion growth rate for a single girth weld address (GWA), this work estimates a distribution of potential corrosion growth rates. Modeling distributions provide a more effective risk-measurement framework, especially concerning high volatility or areas of severe tail risk.
This work relies heavily on machine learning and geospatial tools - particularly artificial neural networks and gradient boosted trees to estimate the corrosion rates and non-linear processes. Building upon prior work using data from a North American Operator, the models in this paper use additional variables from recent research in AC interference and microbiologically influenced corrosion to construct a higher accuracy and distribution-based model of pipeline corrosion risk.
The influence of anodic current on the corrosion protection conditions of buried steel pipelines at a potential less noble than -0.85 V was evaluated in test cells simulating the pipelines under long-term cathodic protection. Results are discussed.
Stress corrosion cracking (SCC) for engineers, designers and consultants involved in the design, maintenance, and rehabilitation of underground petroleum (including gas, crude oil, and refinery products) pipelines.
CP coupons have been used since the 1930s by several of the pioneers of the corrosion-control industry, both in North America and in Europe. Over the last two decades, the use of CP coupons has been rediscovered as a practical method to determine the level of polarization of a buried structure and to confirm the voltage drop in a potential measurement. Acceptance of CP coupon technology is slowly occurring. Research sponsored by the pipeline industry has explored the use of CP coupons and has helped validate the use of this technology.
HISTORICAL DOCUMENT. This NACE standard test method describes a reliable measuring methodology for determining the gouge resistance of coating systems used on buried ferrous metal pipelines.
Potential Theory Applied to Cathodic Protection Design provides the mathematical development of analytical equations for the design of cathodic protection (CP) systems for underground structures with anode groundbeds having various configurations. Equations include calculations for the resistance and voltage (potential) and will assist the CP design engineer.
Material characteristics, application methods, and handling, shipping, and installation procedures for extruded polyolefin coating systems for the prevention of external corrosion of underground or submerged pipelines. Historical Document 1985
Control of external corrosion on joints, fittings, and valves in underground metallic piping systems by the application of protective coatings. Selection, Application. Inspection. Historical Document 1990
This standard was prepared to supplement NACE Standards RP-01-69, RP-06-75 and RP-01-77. Full details are provided of the requirements to ensure adequate isolation of cathodically protected pipelines. Historical Document 1986
Presents procedures for performing close-interval DC pipe-to-electrolyte potential surveys on buried or submerged metallic pipelines.