Assessment of Older Corroded Pipelines with Reduced Toughness and Ductility

Project Categories

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• Onshore Transmission Pipeline
• Arctic
• Damage Condition Assessment

Main Objective

To develop proper guidance on the use of existing failure criteria for corroded linepipe operating in the ductile/brittle transition regime.

Public Abstract

The United States of America is critically dependent on natural gas and petroleum liquids transported through pipelines. The infrastructure that currently transports these energy resources is aging, with a significant fraction being more than fifty years old. While new pipelines are being planned and constructed, pipeline operators typically plan on continued operation of the vast majority of existing pipeline mileage. Assuring the long-term integrity and security of these existing pipelines is essential.
The Pipeline Safety Research and Development program will: a) Improve an operator's ability to determine the severity of damage from localized corrosion and its effect on pipeline operating pressure margins; b) Develop comprehensive and consistent methods for assessing corrosion in the field; and c) Provide a sound basis for establishing corrosion re-assessment intervals for integrity management protocols.
See also Project No 171, Project No 172, Project No 174, Project No 175 for other projects in this Consolidated Program.