Publications
| Title | | Authors |
|---|---|
| The Pipe Aggression Rig: a comprehensive means for studying pipe resistance to third party damage « back |
R Champavere, J Dezobry, C Philibert, A Cappanera, F Dodi, G Linke and A Engel |
| 11th PRCI/EPRG Joint Technical Meeting, Arlington, Virginia, April 1997 | |
| GDF, RUHRGAS and SNAM have carried out R&D work in order to develop Safety Assessment Studies for gas transmission pipelines. One original aspect of this work is to bridge the knowledge gap between already established defect stability criteria and only limited knowledge about the creation mechanisms of par-wall defects. In order to do so, a Pipe Agression Rig (PAR) was designed and constructed, which is able to perform controllable and reproducihle, static and dynamic aggression experiments on pressurised pipe. The main features of this new rig and of the experiments are presented, as well as test results for a static and a dynamic gouging test. Test results document completely the phenomena, as hoth input parameters (impact angles, impact energy, aggression tool shape) and output Parameters (3D force, displacements, etc.) are monitored. As such, this new test equipment can be used both for model validation puposes and as a tool for gaining better understanding of the phenomena. We consider the availability of validated defect creation models as an important issue. It is a necessary step in evaluating directly the pipeline failure probabilities as a function of pipeline environment and pipe characteristics. | |
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