0

Full Content is available to subscribers

Subscribe/Learn More  >

Susceptibility of Stress Corrosion Cracking in Liquid and Gas Pipelines: A Saudi Aramco Study Using Statistical Approaches

[+] Author Affiliations
William Harper

Otterbein University, Westerville, OH

Nader A. Al-Otaibi, Abdulaziz N. Ababtain, Husain M. Al-Muslim

Saudi Arabian Oil Company, Dhahran, Saudi Arabia

Thomas Bubenik

Det Norske Veritas, Dublin, OH

Paper No. IPC2016-64348, pp. V001T03A015; 7 pages
doi:10.1115/IPC2016-64348
From:
  • 2016 11th International Pipeline Conference
  • Volume 1: Pipelines and Facilities Integrity
  • Calgary, Alberta, Canada, September 26–30, 2016
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-5025-1
  • Copyright © 2016 by ASME

abstract

Owned by the Saudi Arabian Government, Saudi Aramco is a fully-integrated, global petroleum enterprise and a world leader in exploration and producing, refining, distribution, shipping and marketing. The company manages the largest proven reserves of conventional crude and the fourth-largest gas reserves in the world. The company runs a vast network of pipelines transporting oil, gas and refined products to processing plants, refineries, export terminals and other customers all over the Kingdom of Saudi Arabia. Saudi Aramco maintains its commitment to supply gas to the continuously growing local markets by implementing latest technologies and state of the art engineering solutions.

Since 2009, and as a result of launching an Electromagnetic Acoustic Transducer (EMAT) In-Line Inspection (ILI) Program, Saudi Aramco has discovered Stress Corrosion Cracking (SCC) defects in a number of its pipelines. Saudi Aramco built on ASME B31.8S criteria for identifying SCC susceptible segments to prioritize its network to manage the utilization of the EMAT technology. The criteria were based on pipeline operating parameters, environment, age and condition. An Extensive Field Verification program was put in action that illustrated the capabilities of the EMAT ILI tools. (Saudi Aramco’s ILI program included a few additional runs of Ultrasound Crack Detection Tool, UTCD, as well).

This paper discusses in more detail how the Study Team enhanced the ASME B31.8S prioritization criteria and the major findings and highlights realized from this activity. A statistical evaluation of the data compiled in the 1st phase of the comprehensive study was conducted along with the literature review. The Study Team used logistic regressions[1,2] to identify factors that increase or decrease the likelihood that cracking is present. The trends that were identified relate to coating type, pipe grade, pipeline age, diameter, thickness, metal loss, cathodic protection (CP) level, slope, and pipe type. The Study Team used the findings to profile crack susceptibility in the pipelines found with SCC and for the Saudi Aramco pipeline network as a whole to identify pipelines susceptible to cracking to include in the future ILI runs.

Copyright © 2016 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In