Full-scale burst tests of ultra-high pressured rich-gas pipelines under buried and unburied conditions

Shinobu Kawaguchi, Kazue Murai, Yoshikazu Hashimoto, Naoto Hagiwara, Hidekuni Yajima, Masao Toyoda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

The results of four full-scale burst tests conducted at the test site in Denmark were reported and the required fracture toughness for arrest was discussed for the X80 pipeline used for rich-gas transmission under ultra-high pressure (defined as greater than a 15 MPa internal pressure). The ductile crack arrest behavior was evaluated for buried using well-compacted sand and unburied conditions. The initial internal pressure of the tests was approximately 18.4 and 16.2 MPa corresponding to hoop stress of 400 and 350 MPa (72% SMYS and 64% SMYS), respectively. Natural gas that consisting of 89-90 mol % methane and the balance being heavier hydrocarbons that give the rich-gas compositions was used for the burst tests. The outer diameters of the tested pipes were 762 mm (30-inch) and 610 mm (24-inch). The velocities of the propagated ductile cracks and the rich-gas decompression were determined from the data measured at the sampling rate of 25 kHz. Based on these test results, the required Charpy v-notch impact energy (vE energy) was used as a measure of the fracture resistance for arrest of the ductile propagating cracks evaluated under different backfill depth conditions. The applicability of the Battelle Two-Curve (BTC) approach was also investigated.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME International Pipeline Conference, IPC 2008
Pages327-336
Number of pages10
DOIs
Publication statusPublished - 2009 Oct 22
Event2008 ASME International Pipeline Conference, IPC 2008 - Calgary, AB, Canada
Duration: 2008 Sep 292008 Oct 3

Publication series

NameProceedings of the Biennial International Pipeline Conference, IPC
Volume3

Other

Other2008 ASME International Pipeline Conference, IPC 2008
CountryCanada
CityCalgary, AB
Period08/9/2908/10/3

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ASJC Scopus subject areas

  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Kawaguchi, S., Murai, K., Hashimoto, Y., Hagiwara, N., Yajima, H., & Toyoda, M. (2009). Full-scale burst tests of ultra-high pressured rich-gas pipelines under buried and unburied conditions. In 2008 Proceedings of the ASME International Pipeline Conference, IPC 2008 (pp. 327-336). (Proceedings of the Biennial International Pipeline Conference, IPC; Vol. 3). https://doi.org/10.1115/IPC2008-64434