This research was funded in part under the Department of Transportation, Pipeline and Hazardous Materials Safety Administration's Pipeline Safety Research and Development Program. The views and conclusions contained in this document are those of the…
This work was funded in part, under the Department of Transportation, Pipeline and Hazardous Materials Safety Administration. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing…
Significant effort has been spent in understanding dent fatigue behavior and developing engineering assessment tools for dent integrity management involving full-scale dent testing and numerical modeling through Pipeline Research Council…
In this report, an advanced failure initiation criterion based on plastic deformation is presented and its use is discussed. The approach is based on the actual stress state and the plastic strain development within the defect region, as these two…
This project was completed to support the development of a guidance note for the disposition of welds interacting with pipe wall mechanical damage (dents, wrinkles, and ovality) and thus allow a more rational treatment of these forms of damage. The…
The purpose of this program was to enhance the characterization of mechanical damage in pipelines through the application of digital eddy current imaging. Lift-off maps can be used to develop quantitative representations of mechanical damage and…
Examines the literature associated with dents and gouges in pipelines and similar shell structures. An analysis of the rebounding of the damaged area is also carried out.
This report reviews and summarizes the current state of knowledge and practice related to mechanical damage in natural gas and hazardous liquid steel pipelines, with a particular focus on transmission pipelines. Comprehensive voluntary interviews…
Federal regulatory standards require repair of dents with depths exceeding 6% of the pipeline diameter and for dents exhibiting signs of mechanical damage interacting with secondary features. However, leaks have been known to occur at dents with…