Assessment of corrosion defects on high-strength steel pipelines ...
With the rapidly increasing energy demand, the oil/gas production and pipeline activities have been found in remote regions, such as the Arctic and sub-Arctic regions in North America, which are featured with geological hazards and are prone to large ground movement. The soil induced strain, combine...
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| Format: | Article in Journal/Newspaper |
| Language: | English |
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Graduate Studies
2013
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| Online Access: | https://dx.doi.org/10.11575/prism/25027 https://prism.ucalgary.ca/handle/11023/883 |
| Summary: | With the rapidly increasing energy demand, the oil/gas production and pipeline activities have been found in remote regions, such as the Arctic and sub-Arctic regions in North America, which are featured with geological hazards and are prone to large ground movement. The soil induced strain, combined with internal pressure, results in a complex stress/strain condition on pipelines, especially at corrosion defects. It has been demonstrated that the presence of corrosion defect constitutes one of the main threats to pipeline safety. The local stress concentration developed at defect further accelerates the localized corrosion. Moreover, the applied cathodic protection (CP) can be shielded, or at least partially shielded, at corrosion defect. To date, there has been no systematic investigation on the synergism of mechanical and electrochemical factors on localized corrosion reaction at defect. The intrinsic science of this problem has remained unknown, and assessing and predictive models that can be used in ... |
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