Fracture propagation control in gas transmission gas pipelines belongs to the major design requirements for safe operation at high internal pressures. However, the current tests such as Drop-Weight-Tear Test (DWTT) and full-scale West-Jefferson (WJ) test reach the limits of their applicability with respect to transition temperature evaluation for seamless quenched and tempered small diameter pipes reflecting nowadays alloying concepts related to mechanical properties. Hereby, different geometry and material effects are evident which might lead to misinterpretation and unreliability of testing results. This paper aims to discuss open issues addressed in the literature and in own experimental findings with respect to reliability and transferability of testing methods, fracture parameters and their representativeness of seamless quenched and tempered pipeline behavior. By applying damage mechanics approach, it is possible to quantify the prevailing stress state and thus to understand the mechanisms controlling specific fracture appearance (ductile or brittle). Furthermore, studies were performed with objective to quantify the effect of different parameters (geometry, material and loading) on the fracture performance of the pipeline. The results from these investigations will serve as a basis for a safe pipeline design against propagating fracture.
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2014 10th International Pipeline Conference
September 29–October 3, 2014
Calgary, Alberta, Canada
Conference Sponsors:
- Pipeline Division
ISBN:
978-0-7918-4612-4
PROCEEDINGS PAPER
How to Assure Fracture-Propagation Control for Seamless Gas Pipelines?
Aida Nonn,
Aida Nonn
Salzgitter Mannesmann Forschung GmbH, Duisburg, Germany
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Marion Erdelen-Peppler,
Marion Erdelen-Peppler
Salzgitter Mannesmann Forschung GmbH, Duisburg, Germany
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Waldemar Wessel,
Waldemar Wessel
Vallourec Deutschland GmbH, Düsseldorf, Germany
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Silke Harksen,
Silke Harksen
Vallourec Deutschland GmbH, Düsseldorf, Germany
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Denise Mahn
Denise Mahn
Vallourec Deutschland GmbH, Düsseldorf, Germany
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Aida Nonn
Salzgitter Mannesmann Forschung GmbH, Duisburg, Germany
Marion Erdelen-Peppler
Salzgitter Mannesmann Forschung GmbH, Duisburg, Germany
Waldemar Wessel
Vallourec Deutschland GmbH, Düsseldorf, Germany
Silke Harksen
Vallourec Deutschland GmbH, Düsseldorf, Germany
Denise Mahn
Vallourec Deutschland GmbH, Düsseldorf, Germany
Paper No:
IPC2014-33169, V003T07A009; 8 pages
Published Online:
December 9, 2014
Citation
Nonn, A, Erdelen-Peppler, M, Wessel, W, Harksen, S, & Mahn, D. "How to Assure Fracture-Propagation Control for Seamless Gas Pipelines?." Proceedings of the 2014 10th International Pipeline Conference. Volume 3: Materials and Joining; Risk and Reliability. Calgary, Alberta, Canada. September 29–October 3, 2014. V003T07A009. ASME. https://doi.org/10.1115/IPC2014-33169
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