Concepts for the development of a model to predict natural gas transmission
pipeline lifetime in a corrosive environment are constructed. Primarily, the effects of
environmentally assisted cracking (EAC) are explored. Tensile test specimens from a
sample of API 5L X-52 pipeline were tested in a simulated groundwater solution and
subsequently analyzed. The results suggested that the simulated environment ultimately
reduced the ductility of the test specimens; however, no evidence of ??classical?? stress
corrosion crack morphology was discovered. However, corrosion pits up to 0.75 mm
(0.03 in) were revealed during metallographic analysis. A Marin factor analogy and an
energy method concept are suggested and explored. Ultimately, the test data set was too
small for the results to be of any directly applicable significance.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/2357 |
| Date | 29 August 2005 |
| Creators | Curbo, Jason Wayne |
| Contributors | Griffin, Richard B. |
| Publisher | Texas A&M University |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Electronic Thesis, text |
| Format | 10531381 bytes, electronic, application/pdf, born digital |
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