Write your message
Volume 9 - Winter and Spring 2018                   ijmt 2018, 9 - Winter and Spring 2018: 23-32 | Back to browse issues page

DOI: 10.29252/ijmt.9.23

XML Print

1- Assisstant prof. in offshore strcutures, petroleum university of technology
2- MS.C in offshore structures
3- Assisstant Prof. in offshore structures
Abstract:   (2975 Views)
Free-span occurs normally in a pipeline at uneven seabed, dynamic seabed and pipeline crossing. Free spanning in pipeline causes Vortex Induced Vibration (VIV) fatigue, fracture and bursting. In this paper, a pipeline located in South Pars Gas Field is assessed against local buckling and VIV fatigue using probability of failure theory based on the recommended methodology by Det Norske Veritas (DNV) corresponding to different soil classes and different span length to pipeline diameter and also different water depths by applying First-Order Reliability Method (FORM) and Monte-Carlo Sampling (MCS), separately. Furthermore, the simultaneous effect of local buckling and VIV fatigue is assessed in terms of probability of failure. Finally, in order to determine the effect of each parameter on failure probability, sensitivity analysis is carried out using the alpha index.
Full-Text [PDF 1225 kb]   (1115 Downloads)    
Type of Study: Research Paper | Subject: Offshore Structure
Received: 2017/08/5 | Accepted: 2018/01/8

1. 1- Bai, Q. and Bai, Y., (2014), “1 - Introduction,” in Subsea Pipeline Design, Analysis, and Installation, Boston: Gulf Professional Publishing, p. 3–21. [DOI: 10.1016/B978-0-12-386888-6.00001-8]
2. 2- Mustaffa, Z., (2011), System Reliability Assessment of Offshore Pipelines, PhD Thesis, University of Delft, Netherland.
3. 3- “DNV-OS-F101: Submarine Pipeline Systems (2010).
4. 4- Rezazadeh, K., Zhu, L., Bai, Y., and Zhang, L. , (2010), Fatigue Analysis of Multi-Spanning Subsea Pipeline, In Proceedings of 29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 5, Parts A and B, p. 805–812. [DOI: 10.1115/OMAE2010-20847]
5. 5- Hagen, O., Mo̸rk, K. , Sigurdsson, G. , and Nielsen, F. G., (2003), Evaluation of Free Spanning Pipeline Design in a Risk Based Perspective, Vol. 2 Safety Reliability, Pipeline Technology, vol. 2, p. 789–799 [DOI: 10.1115/OMAE2010-20847]
6. 6- Van den Abeele, F. , Boël, F. , and Vanden Berghe, J.-F. , (2014), Structural Reliability of Free Spanning Pipelines, Volume 3: Materials and Joining; Risk and Reliability [DOI: 10.1115/IPC2014-33552]
7. 7- Shabani, M. M. , Taheri, A., and Daghigh, M., (2017), Reliability Assessment of Free Spanning Subsea Pipeline, Thin-Walled Structures, vol. 120, p. 116–123 [DOI: 10.1016/j.tws.2017.08.026]
8. 8- “DNV-RP-F105: Free Spanning Pipelines, (2006).
9. 9- Wilson, J. F., J.Muga, B., and C.Reese, L., (2003), Dynamics of Offshore Structrues, Second edition. Hoboken, New Jersey: John Wiley & Sons, Inc.,
10. 10- Van den Abeele, F. , Boël, F., and Hill, M., (2013), Fatigue Analysis of Free Spanning Pipelines Subjected to Vortex Induced Vibrations, In Proceedings of the 32rd International Conference on Ocean, Offshore and Arctic Engineering OMAE2013 [DOI: 10.1115/OMAE2013-10625]
11. 11- Dowling, N. E. , (2013), Fatigue of Materials: Introduction and Stress-Based Approach,” in Mechanical Behavior of Materials: Engineering Methods for Deformation, Fracture, and Fatigue, Fourth edition, p. 416–490.
12. 12- DNV GL, (2016 ), DNVGL-RP-C203: Fatigue Design of Offshore Steel Structures, no. DNVGL-RP-C203.
13. 13- Dowling, N. E. , Prasad, K. S., and Narayanasamy, R., (2013), Mechanical Behavior of Materials: Engineering Methods for Deformation, Fracture, and Fatigue, Editors: K. S. Prasad and R. Narayanasamy, Pearson, pp. 26–30.
14. 14- Fyrileiv, O. , and Kim, M. , (1998), Assessment of Free Spanning Pipelines Using the DNV Guideline, In Proceeding of 8th International Offshore Polar Engenergy Conference, vol. II, p. 100–106.
15. 15- Sollund, H. A. and Vedeld, K., (2015), Effects of Seabed Topography on Modal Analyses of Free Spanning Pipelines, In Proceeding of International Offshore Polar Engergy Conference, pp. 106–114, 2015.
16. 16- Bai, Q. and Bai, Y., (2014 ), Chapter-3: Buckling and Collapse of Metallic Pipes, in Subsea Pipeline Design, Analysis, and Installation, editors: Q. Bai and Y. Bai, Boston: Gulf Professional Publishing, p. 41–65 [DOI: 10.1016/B978-0-12-397949-0.00003-0]
17. 17- Murphey, C. E., and Langner, C. G. , (1985), Ultimate Pipe Strength Under Bending, Collapse And Fatigue, In Proceedings of the 4th International Conference on Offshore Mechanics and Arctic Engineering, vol. 1, p. 467–477.
18. 18- Gresnigt, A. M. , (1987), Plastic Design of Buried Steel Pipelines in Settlement Areas.
19. 19- Mohareb, M. E. , (1994), deformational Behaviour of Line Pipe, PhD Thesis, Unverisity of Albereta, Canada.
20. 20- Bai, Y. , Tang, J. , Xu, W. , and Ruan, W. , (2015), Reliability-Based Design of Subsea Light Weight Pipeline Against Lateral Stability, Journal of Marine Structures, vol. 43, p. 107–124 [DOI: 10.1016/j.marstruc.2015.06.002]
21. 21- young, B. , Ranger, I. , and Torgeir, M. , Tube Collapse Under Combined Pressure, Tension And Bending Loads, International Journal of Offshore Polar Engineering, vol. 3, no. 2.
22. 22- STEPHEN, T. , and JAMES, G. , (1963), Theory On Elastic Stability, New Yourk: Mcgraw-Hill Publication, p. 290–300.
23. 23- Haagsma, S. C., and Schaap, D. , (1981), Collapse Resistance of Submarine Lines Studied, Oil Gas Journal, United States, vol. 79.
24. 24- Bai, Y. , and Bai, Q., (2005), Chapter 3: Buckling/Collapse of Deepwater Metallic Pipes, in Subsea Pipelines and Risers, Editors: Y. Bai and Q. Bai, Oxford: Elsevier Science Ltd, p. 41–66.
25. 25- Lee, O. S., Kim, D. H. , and Choi, S. S. , (2006) Reliability of Buried Pipeline Using a Theory of Probability of Failure, Solid State Phenomena, vol. 110, p. 221–230.
26. 26- BOMEL Limited, (2001), Probabilistic Methods: Uses and Abuses in Structural Integrity, in Probabilistic methods: Uses and abuses in structural integrity, no. 398/2001.
27. 27- BOMEL Limited, Structural Reliability Theory, Uncertainty Modelling and the Interpretation of Probability, in Probabilistic methods: Uses and abuses in structural integrity, no. 398/2001, 2001.
28. 28- Der Kiureghian, A., (2005), First- and Second-Order Reliability Methods, in Engineering Design Reliability, Editors: E. Nikolaidis, D. M. Ghiocel, and S. Singhal, ohio: CRC Press, p. 302–325.
29. 29- Mahmoodian, M. , and Li, C. Q. , (2017), Failure Assessment and Safe Life Prediction of Corroded Oil And Gas Pipelines, Journal of Petroleum Science Enginering, vol. 151, p. 434–438. [DOI:10.1016/j.petrol.2016.12.029]
30. 30- Schuëller, G. I. , and Stix, R. , (1987), A Critical Appraisal of Methods to Determine Failure Probabilities, Structural Safety, vol. 4, no. 4, pp. 293–309. [DOI: 10.1016/0167-4730(87)90004-X]
31. 31- Galgoul, N. S. , Paulino de Barros, J. C. , and Ferreira, R. P., (2004), The Interaction of Free Span And Lateral Buckling Problems, In Proceedings of International Pipeline Conference, Volumes 1, 2, and 3, p. 1905–1910. [DOI: 10.1115/IPC2004-0308]