Risers and sections of pipeline in free-span can be subjected to cyclic loading from flow-induced vibrations and other fluctuating forces leading to fatigue loading of the structure. Single-sided welds are of particular interest, however current design codes take a pessimistic view of their fatigue performance. Improvements in the quality of the finished weld produced by modern pipeline welding technology, and indeed advances made in knowledge about fatigue of such welds, mean that revision of the design guidance is now warranted. This paper reviews the fundamental basis of the existing S-N curves used for North Sea applications and considers their applicability in the light of research on fatigue of girth welds. Based on the review, proposals are made for revised fatigue design rules for girth welds in pipelines.
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ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering
June 8–13, 2003
Cancun, Mexico
Conference Sponsors:
- Ocean, Offshore, and Arctic Engineering Division
ISBN:
0-7918-3683-5
PROCEEDINGS PAPER
Guidance for Fatigue Design and Assessment of Pipeline Girth Welds
P. J. Haagensen,
P. J. Haagensen
Norwegian University of Science and Technology, Trondheim, Norway
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K. A. Macdonald
K. A. Macdonald
Stavanger University College, Stavanger, Norway
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P. J. Haagensen
Norwegian University of Science and Technology, Trondheim, Norway
S. J. Maddox
TWI, Cambridge, UK
K. A. Macdonald
Stavanger University College, Stavanger, Norway
Paper No:
OMAE2003-37496, pp. 377-395; 19 pages
Published Online:
January 23, 2009
Citation
Haagensen, PJ, Maddox, SJ, & Macdonald, KA. "Guidance for Fatigue Design and Assessment of Pipeline Girth Welds." Proceedings of the ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. Volume 3: Materials Technology; Ocean Engineering; Polar and Arctic Sciences and Technology; Workshops. Cancun, Mexico. June 8–13, 2003. pp. 377-395. ASME. https://doi.org/10.1115/OMAE2003-37496
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