0

Full Content is available to subscribers

Subscribe/Learn More  >

Re-Routing of an Exposed Subsea Pipeline Using a Double Block and Bleed Intrusive Isolation Technique

[+] Author Affiliations
Srivatsan K. Iyengar

T.D. Williamson India Private Ltd., Mumbai, India

Shivram Jaiswal

Oil & Natural Gas Corporation Ltd., Mumbai, India

Paper No. IPC2016-64691, pp. V003T04A045; 10 pages
doi:10.1115/IPC2016-64691
From:
  • 2016 11th International Pipeline Conference
  • Volume 3: Operations, Monitoring and Maintenance; Materials and Joining
  • Calgary, Alberta, Canada, September 26–30, 2016
  • Conference Sponsors: Pipeline Division
  • ISBN: 978-0-7918-5027-5
  • Copyright © 2016 by ASME

abstract

Oil & Natural Gas Corporation Ltd. (ONGC) operates a 42” gas pipeline that originates from an offshore platform and terminates at an onshore plant. The pipeline has operated for two decades and transmits 17% of India’s gas needs.

Unfortunately, the buried pipeline became exposed at Landfall Beach, likely due to the unpredictable impact of natural forces over a period of time. The shifting shoreline eroded resulting in the pipeline being exposed, which threatened its integrity. Stopgap arrangments were made to protect the pipeline from being hit and moved by continual tides, but that temporary measure also proved ineffective against the forces of the nature. The seasonal tropical storms worsened the situation.

ONGC rose to the challenge and decided to carry out permanent remedial measures, including re-routing of the affected segment of the pipeline and its associated station valve.

The situation presented several challenges. Because the pipeline was responsible for a large percentage of India’s gas needs, it was important to keep the pipeline live. Additionally, the worksite was a popular beach recreation area, so safety was a top priority.

ONGC contacted T.D. Williamson India Private Ltd. (TDW) for an isolation solution using double block and bleed methodogy to meet both of these concerns.

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