Featured Research

from universities, journals, and other organizations

Protecting underground pipelines from corrosion in sub-zero environments

Date:
October 1, 2013
Source:
NACE International
Summary:
Northern Canada's permafrost and semi-permafrost environment poses a challenge for designing and building buried oil and gas pipelines. Researchers explored and evaluated the use of a certain type of corrosion prevention system, cathodic protection, in permafrost regions. Researchers have explained how cathodic protection systems function in sub-zero environments and how they can, when combined with external pipeline coatings, provide long-term protection from corrosion.

Northern Canada's permafrost and semi-permafrost environment is a huge challenge for designing and engineering underground pipelines, and a critical aspect of protecting both the pipeline and this sensitive environment involves the design of an effective corrosion protection system.

Related Articles


One of the most common methods to protect buried infrastructure -- such as oil and gas transmission pipelines -- from corrosion is the application of an external coating.

"Although great advances have been made within the past 30 years in terms of coatings reliability and longevity, it's still desirable to implement a back-up plan: cathodic protection," says Paul Duchesne, manager of media relations for Natural Resources Canada.

What is cathodic protection? It's a method used to protect buried pipelines from corrosion, which involves attaching sacrificial anodes to a pipeline's coated steel. Sacrificial anodes are more electrically active than steel, so corrosive currents exit through the anodes rather than the steel.

Since the implications of partially frozen ground on a pipeline's cathodic protection system weren't entirely clear, Natural Resources Canada researchers decided to explore and evaluate the use of cathodic protection in permafrost regions.

In a paper published in CORROSION journal, the researchers explain how cathodic protection systems function at low temperature and describe the various aspects of cathodic protection application in sub-zero temperatures.

The researchers concluded that the application of cathodic protection systems may provide long-term protection of the infrastructure from corrosion when combined with high-performance coatings -- as long as the system is designed and operated to overcome high electrical resistance frozen phases.

"Ultimately, we hope that our research will contribute to the safe and reliable operation of underground infrastructure such as oil and gas transmission pipelines, production facilities, and storage tanks," says Duchesne.


Story Source:

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


Journal Reference:

  1. Sankara Papavinasam, Tharani Pannerselvam, Alex Doiron. Applicability of Cathodic Protection for Underground Infrastructures Operating at Sub-Zero Temperatures. Corrosion, 2013; 69 (9): 936 DOI: 10.5006/0881

Cite This Page:

NACE International. "Protecting underground pipelines from corrosion in sub-zero environments." ScienceDaily. ScienceDaily, 1 October 2013. <www.sciencedaily.com/releases/2013/10/131001124014.htm>.
NACE International. (2013, October 1). Protecting underground pipelines from corrosion in sub-zero environments. ScienceDaily. Retrieved November 22, 2014 from www.sciencedaily.com/releases/2013/10/131001124014.htm
NACE International. "Protecting underground pipelines from corrosion in sub-zero environments." ScienceDaily. www.sciencedaily.com/releases/2013/10/131001124014.htm (accessed November 22, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, November 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
Google Announces Improvements To Balloon-Borne Wi-Fi Project

Google Announces Improvements To Balloon-Borne Wi-Fi Project

Newsy (Nov. 21, 2014) In a blog post, Google said its balloons have traveled 3 million kilometers since the start of Project Loon. Video provided by Newsy
Powered by NewsLook.com
NSA Director: China Can Damage US Power Grid

NSA Director: China Can Damage US Power Grid

AP (Nov. 20, 2014) China and "one or two" other countries are capable of mounting cyberattacks that would shut down the electric grid and other critical systems in parts of the United States, according to Adm. Michael Rogers, director of the National Security Agency and hea Video provided by AP
Powered by NewsLook.com
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

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