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 27, 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 27, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
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