Abstract
A defect in a field-buried pipeline that has both a crack and a dent, commonly described as a dent-crack defect, may result in a devastating failure resulting from a rupture or leak in the dent defect. Hence, the safety and performance of a pipeline with a dent-crack defect becomes a significant concern for the operator. Recently, the University of Windsor’s Centre for Engineering Research in Pipelines completed a study examining this concern. The study examined the effect that crack length has on a pipeline’s burst strength or pressure capacity. This examination found that a dent-crack defect’s crack length of 300 mm may result in a 50% reduction in the pipe’s burst strength. This paper explains the examination setup, test specimens, and test procedure as well as the test data and the results garnered from finite-element analyses.
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Acknowledgments
The authors are thankful for the financial support given to them by the Natural Sciences and Engineering Research Council of Canada (NSERC) in Ottawa and TransCanada PipeLines Limited in Calgary, Alberta, Canada. The authors are also thankful for the support given to them by the Centre for Engineering Research in Pipelines (CERP).
References
Abaqus [Computer software]. Dassault Systèmes, Waltham, MA.
AER (Alberta Energy Regulator). (2013). “Pipeline performance in Alberta, 1990–2012.”, Calgary, Canada.
Akbari Alashti, R., Jafari, S., and Hosseinipour, S. J. (2015). “Experimental and numerical investigation of ductile damage effect on load bearing capacity of a dented API XB pipe subjected to internal pressure.” Eng. Fail. Anal., 47(PA), 208–228.
Allouti, M., Schmitt, C., and Pluvinage, G. (2014). “Assessment of a gouge and dent defect in a pipeline by a combined criterion.” Eng. Fail. Anal., 36, 1–13.
API (American Petroleum Institute). (2012). “Specification for line pipe.”, Washington, DC.
ASME. (2004). “Manual for determining remaining strength of corroded pipelines: Supplement to B31 code-pressure piping.”, New York.
ASME. (2012). “Pipeline transportation systems for liquids and slurries.” ASME B31.4, New York.
ASTM. (2011). “Standard test methods for tension testing of metallic materials.” ASTM E8/E8M-11, West Conshohocken, PA.
ASTM. (2013). “Standard test method for measurement of fracture toughness.” ASTM E1820-13, West Conshohocken, PA.
Blachut, J., and Iflefel, I. B. (2008). “Experimental and numerical investigation of plain and gouged dents in steel pipes subjected to pressure and moment loading.” J. Pressure Vessel Technol., 130(2), .
Blachut, J., and Iflefel, I. B. (2011). “Analysis of pipes containing plain and gouged dents.” Strain, 47(1), e34–e51.
Cosham, A., and Hopkins, P. (2004). “The effect of dents in pipelines-guidance in the pipeline defect assessment manual.” Int. J. Pressure Vessels Piping, 81(2), 127–139.
CSA (Canadian Standards Association). (2007). “Oil and gas pipeline systems.” CSA Z662-07, Mississauga, Canada.
Dewanbabee, H., and Das, S. (2013). “Failure of pressurized corroded pipeline subject to axial compression: A parametric study.” J. Offshore Mech. Arctic Eng., 135(3), .
DNV (Det Norske Veritas). (2012). “Submarine pipeline systems.”, Oslo, Norway.
Ghaednia, H., Das, S., Wang, R., and Kania, R. (2015a). “Effect of operating pressure and dent depth on burst strength of NPS30 linepipe with dent-crack defect.” J. Offshore Mech. Arctic Eng., 137(3), .
Ghaednia, H., Das, S., Wang, R., and Kania, R. (2015b). “Safe burst strength of a pipeline with dent-crack defect: Effect of crack depth and operating pressure.” Eng. Fail. Anal., 55, 288–299.
Ghaednia, H., Silva, J., Kenno, S., Das, S., Wang, R., and Kania, R. (2013). “Pressure tests on 30-in diameter X65 grade pipes with dent-crack defects.” J. Pipeline Eng., 12(1), 61–67.
Ghaednia, H., Zohrehheydariha, J., Das, S., Wang, R., and Kania, R. (2014). “Out-of-roundness in NPS30 X70 pipes subjected to concentrated lateral load.” Proc., Biennial Int. Pipeline Conf., ASME, New York, IPC2014-33107.
Gresnigt, A. M., Karamanos, S. A., and Andreadakis, K. P. (2007). “Lateral loading of internally pressurized steel pipes.” J. Pressure Vessel Technol., 129(4), 630–638.
Hanif, W., and Kenny, S. (2014). “Mechanical damage and fatigue assessment of dented pipelines using FEA.” Proc., Biennial Int. Pipeline Conf., ASME, Calgary, AB, Canada, IPC2014-33445.
Karamanos, S. A., and Andreadakis, K. P. (2006). “Denting of internally pressurized tubes under lateral loads.” Int. J. Mech. Sci., 48(10), 1080–1094.
Lancaster, E. R. (1996). “Burst pressures of pipes containing dents and gouges.” Proc. Inst. Mech. Eng., Part E: J. Process Mech. Eng., 210, 19–27.
Lavigne, O., Gamboa, E., Costin, W., Law, M., Luzin, V., and Linton, V. (2014). “Microstructural and mechanical factors influencing high pH stress corrosion cracking susceptibility of low carbon line pipe steel.” Eng. Fail. Anal., 45, 283–291.
Saleem, B., Ahmed, F., Rafiq, M. A., Ajmal, M., and Ali, L. (2014). “Stress corrosion failure of an X52 grade gas pipeline.” Eng. Fail. Anal., 46, 157–165.
Silva, J., Ghaednia, H., and Das, S. (2012). “Fatigue life assessment for NPS30 steel pipe.” Proc., Biennial Int. Pipeline Conf., ASME, New York, 619–624.
Smiderle, J., Pardal, J. M., Tavares, S. S. M., and Vidal, A. C. N. (2014). “Premature failure of superduplex stainless steel pipe by pitting in sea water environment.” Eng. Fail. Anal., 46, 134–139.
Smith, R. B., and Gideon, D. N. (1979). “Statistical analysis of DOT-OPSO data.” 6th Symp. on Line Pipe Research, American Gas Association, Washington, DC.
Staat, M., and Vu, D.-K. (2013). “Limit analysis of flaws in pressurized pipes and cylindrical vessels. Part II: Circumferential defects.” Eng. Fract. Mech., 97, 314–333.
Wang, K. C., and Smith, E. D. (1982). “The effect of mechanical damage on fracture initiation in line pipe. Part I: Dents.” Canada Centre for Mineral and Energy Technology, Ottawa.
Zarea, M., Hertz-Clemens, S., Batisse, R., and Cardin, P. (2014). “Experimental investigation on combined ‘dent and gouge’ defects on vintage steel transmission pipelines.” Proc., Biennial Int. Pipeline Conf., ASME, New York, IPC2014-33538.
Zarea, M. F., Toumbas, D. N., Philibert, C. E., and Deo, I. (1996). “Numerical models for static denting and dynamic puncture of gas transmission linepipe and their validation.” Proc., 1996 1st Int. Pipeline Conf., ASME, New York, 777–784.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 8 • Issue 2 • May 2017
Copyright
©2016 American Society of Civil Engineers.
History
Received: Mar 8, 2016
Accepted: Oct 5, 2016
Published online: Nov 30, 2016
Discussion open until: Apr 30, 2017
Published in print: May 1, 2017
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