Featured Research

from universities, journals, and other organizations

New Sensor Could Help Avert Pipeline Failures

Date:
October 9, 2008
Source:
National Institute of Standards and Technology
Summary:
Researchers have developed a prototype sensor that quickly detects very small amounts of hydrogen accumulation in coated pipeline steel. The new sensor could provide early warning of pipes that have accumulated excessive amounts of hydrogen and avert potentially disastrous failures of pipelines.

Researchers at the National Institute of Standards and Technology (NIST) and Colorado School of Mines (CSM) have developed a prototype sensor that quickly detects very small amounts of hydrogen accumulation in coated pipeline steel.

Related Articles


The new sensor could provide early warning of pipes that have accumulated excessive amounts of hydrogen—a notorious source of embrittlement—and avert potentially disastrous failures of pipelines carrying hydrogen fuel.

Hydrogen is attractive as a fuel because it burns cleanly without carbon emissions and can be derived from domestic sources. However one long-recognized challenge is that hydrogen can cause gradual embrittlement in conventional pipelines by slowly diffusing into the metal. The NIST/CSM sensor, described today at the 7th International Pipeline Conference,* could monitor for hydrogen buildup before a pipeline actually fails in service, or during testing or production.

The nondestructive, non-contact hydrogen sensor is approximately 4 square inches and is designed to be a portable sensor to make measurements on excavated or unexcavated pipeline steels. The sensor sends a current through the pipe and measures changes in impedance (resistance with a function of depth) as an indicator of hydrogen content within the steel and the overall steel pipe integrity. The hydrogen sensor is based on electromagnetic concepts to generate alternating currents into the pipeline steel, which in turn induces an opposing magnetic field. Any change in the hydrogen content in the steel modifies the current, resistivity, and thus the impedance.

NIST laboratory and field test results show that a pipe’s impedance, and thus resistivity, increases with increasing hydrogen content. The measurement sensitivity is exceptional: the sensor can measure hydrogen content levels in pipeline steel well below 1 part per million (ppm). High strength pipeline steels can tolerate only a few parts per million of hydrogen before significant problems arise.

By contrast, conventional analytical techniques do not have sensitivity or accuracy below 1 ppm. The new hydrogen sensor also acts as a forewarning or preventative monitoring system to detect the agents that actually cause the flaws, cracks and defects before they arise. Most traditional nondestructive tools used in the pipeline industry (such as ultrasonics and magnetic flux leakage) are used for determination of cracks, corrosion or other flaws that have already occurred.

The sensor development was supported in part by the Minerals Management Service and Department of Transportation.

* A. Lasseigne, K. Koenig, J. Jackson, D. Olson, B. Mishra, T.A. Siewert and J.D. McColskey. Advanced non-destructive hydrogen sensors to prevent material degradation from hydrogen damage. Paper presented Oct. 1 at IPC2008, 7th International Pipeline Conference, Sept. 29 – Oct. 3, 2008, Calgary, Alberta, Canada.


Story Source:

The above story is based on materials provided by National Institute of Standards and Technology. Note: Materials may be edited for content and length.


Cite This Page:

National Institute of Standards and Technology. "New Sensor Could Help Avert Pipeline Failures." ScienceDaily. ScienceDaily, 9 October 2008. <www.sciencedaily.com/releases/2008/10/081002172146.htm>.
National Institute of Standards and Technology. (2008, October 9). New Sensor Could Help Avert Pipeline Failures. ScienceDaily. Retrieved March 1, 2015 from www.sciencedaily.com/releases/2008/10/081002172146.htm
National Institute of Standards and Technology. "New Sensor Could Help Avert Pipeline Failures." ScienceDaily. www.sciencedaily.com/releases/2008/10/081002172146.htm (accessed March 1, 2015).

Share This


More From ScienceDaily



More Matter & Energy News

Sunday, March 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

HTC And Valve Team Up For Virtual Reality Headset

HTC And Valve Team Up For Virtual Reality Headset

Newsy (Mar. 1, 2015) HTC unveiled Vive, its new virtual reality headset, Sunday. The device is supported by gaming company Valve, which has made a push into the market. Video provided by Newsy
Powered by NewsLook.com
Rehab Robot Helps Restore Damaged Muscles and Nerves

Rehab Robot Helps Restore Damaged Muscles and Nerves

Reuters - Innovations Video Online (Mar. 1, 2015) A rehabilitation robot prototype to help restore deteriorated nerves and muscles using electromyography and computer games. Ben Gruber reports. Video provided by Reuters
Powered by NewsLook.com
Elon Musk's Hyperloop Moves Forward

Elon Musk's Hyperloop Moves Forward

Buzz60 (Feb. 27, 2015) Zipping around at 800-miles an hour is coming closer to reality in California. An entire town is being built around Elon Musk&apos;s Hyperloop concept and it wants you to stop in for a ride when it&apos;s ready. Brett Larson is on board. Video provided by Buzz60
Powered by NewsLook.com
Vibrating Bicycle Senses Traffic

Vibrating Bicycle Senses Traffic

Reuters - Innovations Video Online (Feb. 26, 2015) Dutch scientists have developed a smart bicycle that uses sensors, wireless technology and video to warn riders of traffic dangers. Ben Gruber reports. Video provided by Reuters
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