An experimental program sponsored jointly by SNAM Rete Gas, Tokyo Gas Co., Ltd. and TransCanada Pipelines Ltd. was conducted on cold bend pipes under combined loading. These tests were designed to study the local buckling behavior and to develop the critical compressive strain criteria for cold bend pipes under combined loading. The test program includes eight full-scale specimens of NPS24 and NPS30 pipes with pipe thickness up to 14.3 mm. The test parameters include different D/t ratios (44, 69, and 93), material grades (X60, X65, and X80), bend angles (1.0 to 1.5 degree/diameter), and operation pressures (0%, 40%, 60%, and 80% of SMYS). In addition to full-scale tests, initial imperfections and residual strains due to cold bend processes were also measured. This paper describes the test specimens, test setup, instrumentation, and test procedures used in the program. A brief discussion of the test results is also covered in the paper.
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2004 International Pipeline Conference
October 4–8, 2004
Calgary, Alberta, Canada
Conference Sponsors:
- International Petroleum Technology Institute
ISBN:
0-7918-4176-6
PROCEEDINGS PAPER
Full-Scale Tests of Cold Bend Pipes Available to Purchase
M. Sen,
M. Sen
University of Alberta, Edmonton, AB, Canada
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J. J. R. Cheng,
J. J. R. Cheng
University of Alberta, Edmonton, AB, Canada
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D. W. Murray,
D. W. Murray
University of Alberta, Edmonton, AB, Canada
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J. Zhou,
J. Zhou
TransCanada Pipelines Ltd., Calgary, AB, Canada
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K. Adams,
K. Adams
TransCanada Pipelines Ltd., Calgary, AB, Canada
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K. Yoshizaki,
K. Yoshizaki
Tokyo Gas Company, Ltd., Tokyo, Japan
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N. Fukuda,
N. Fukuda
Tokyo Gas Company, Ltd., Tokyo, Japan
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E. Cerelli
E. Cerelli
Snam Rete Gas, Italy
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M. Sen
University of Alberta, Edmonton, AB, Canada
J. J. R. Cheng
University of Alberta, Edmonton, AB, Canada
D. W. Murray
University of Alberta, Edmonton, AB, Canada
J. Zhou
TransCanada Pipelines Ltd., Calgary, AB, Canada
K. Adams
TransCanada Pipelines Ltd., Calgary, AB, Canada
K. Yoshizaki
Tokyo Gas Company, Ltd., Tokyo, Japan
N. Fukuda
Tokyo Gas Company, Ltd., Tokyo, Japan
M. Como
Snam Rete Gas, Italy
E. Cerelli
Snam Rete Gas, Italy
Paper No:
IPC2004-0743, pp. 419-426; 8 pages
Published Online:
December 4, 2008
Citation
Sen, M, Cheng, JJR, Murray, DW, Zhou, J, Adams, K, Yoshizaki, K, Fukuda, N, Como, M, & Cerelli, E. "Full-Scale Tests of Cold Bend Pipes." Proceedings of the 2004 International Pipeline Conference. 2004 International Pipeline Conference, Volumes 1, 2, and 3. Calgary, Alberta, Canada. October 4–8, 2004. pp. 419-426. ASME. https://doi.org/10.1115/IPC2004-0743
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