Featured Research

from universities, journals, and other organizations

Newer, Simpler Fixes Restore Corroded Pipelines

Date:
December 15, 2007
Source:
Blackwell Publishing Ltd.
Summary:
Researchers are taking the guesswork out of repairing corroded oil and gas pipelines. Historically, engineers repairing corroded pipeline segments have not had much guidance in regard to measuring the effectiveness of their choice of repair materials.

Researchers are taking the guesswork out of repairing corroded oil and gas pipelines with two recent studies that appeared in the journal Experimental Techniques.

Related Articles


Historically, engineers repairing corroded pipeline segments have not had much guidance in regard to measuring the effectiveness of their choice of repair materials. This is especially true in the case of repair materials for internal defects, which have been difficult to assess. Researcher J.L.F. Freire of the Catholic University of Rio de Janeiro and his colleagues are easing in quantifying the effectiveness of the repair systems with a new approach that models and measures pipes’ strength.

They applied the fiberglass-composite repairs to pipeline tubes with machined defects made to resemble natural corrosion. Using strain gages, they measured the strength of the repairs while pumping pressurized water through the pipes. Their study revealed wide variation in the repair materials’ quality. While one system proved stronger than an unblemished pipe, another was only 25 percent as strong.

“We can use these models and tests to establish standards for repair systems,” Freire said, “and to compare different ones.”

In the second study, researchers found that thin, precurved, steel lamina effectively repair external corrosion without compromising pipes’ elasticity or strength. Lead researcher M.A. Perez Rosas and colleagues at the Department of Mechanical Engineering, PUC-Rio, tested the new steel sheaths on scaled-down piping segments that were pressurized to simulate the flow of oil. Four layers of low-carbon steel or two layers of stronger steel both made the treated pipe segment stronger than the original.

“I would expect the lamina to work well in the field,” Rosas said. “They’re thin, easy to manage, and they eliminate the need for welding.”


Story Source:

The above story is based on materials provided by Blackwell Publishing Ltd.. Note: Materials may be edited for content and length.


Cite This Page:

Blackwell Publishing Ltd.. "Newer, Simpler Fixes Restore Corroded Pipelines." ScienceDaily. ScienceDaily, 15 December 2007. <www.sciencedaily.com/releases/2007/12/071214183428.htm>.
Blackwell Publishing Ltd.. (2007, December 15). Newer, Simpler Fixes Restore Corroded Pipelines. ScienceDaily. Retrieved November 20, 2014 from www.sciencedaily.com/releases/2007/12/071214183428.htm
Blackwell Publishing Ltd.. "Newer, Simpler Fixes Restore Corroded Pipelines." ScienceDaily. www.sciencedaily.com/releases/2007/12/071214183428.htm (accessed November 20, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, November 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Latest Minivan Crash Tests Aren't Pretty

Latest Minivan Crash Tests Aren't Pretty

Newsy (Nov. 20, 2014) Five minivans were put to the test in head-on crash simulations by the Insurance Institute for Highway Safety. Video provided by Newsy
Powered by NewsLook.com
Takata Offers "sincerest Condolences" To Victims of Malfunctioning Airbag

Takata Offers "sincerest Condolences" To Victims of Malfunctioning Airbag

Reuters - US Online Video (Nov. 20, 2014) U.S. Congress hears from a victim and company officials as it holds a hearing on the safety of Takata airbags after reports of injuries. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Shape-Shifting Architecture That Responds to Heat

Shape-Shifting Architecture That Responds to Heat

Reuters - Innovations Video Online (Nov. 19, 2014) Architectural research students in Barcelona showcase a prototype of a shape-shifting building which expands and contracts as heat is applied. Amy Pollock reports. Video provided by Reuters
Powered by NewsLook.com
Flying Aviation Expo 2014: A Weekend to Remember

Flying Aviation Expo 2014: A Weekend to Remember

Flying (Nov. 19, 2014) Get a taste of all the excitement at the first ever Flying Aviation Expo in Palm Springs, California. Video provided by Flying
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins