Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Protecting underground pipelines from corrosion in sub-zero environments

02.10.2013
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.

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.

More Information:

The paper, "Applicability of Cathodic Protection for Underground Infrastructures Operating at Sub-Zero Temperatures," by Sankara Papavinasam, Tharani Pannerselvam, and Alex Doiron, appears in NACE International's journal, CORROSION, Sep. 2013, Vol. 69, No. 9, pp. 936-945. See: http://dx.doi.org/10.5006/0881

About NACE International: Founded in 1943, NACE International, The Corrosion Society, serves 30,000 members in 130 countries. Based in Houston, Texas, with offices in the U.S., China, Malaysia, and Saudi Arabia, the organization reaches all industries impacted by corrosion and offers the most specified technical training and certification programs, conferences, industry standards, reports, publications, and software to prevent and mitigate corrosion. NACE International provides members with career and business building resources, government relations and public awareness support, and research and education to support the pursuit of global corrosion control solutions.

CORROSION is a technical research journal devoted to furthering the knowledge of corrosion science and engineering. The technical articles selected for publication in CORROSION provide a permanent record of the latest progress in the science and technology of corrosion control. The journal is directed at scientists and engineers concerned with the phenomena of corrosion processes and the protection of materials in corrosive environments. For more information, please visit http://corrosionjournal.org.

Alysa Reich | EurekAlert!
Further information:
http://www.nace.org

More articles from Materials Sciences:

nachricht Transporting spin: A graphene and boron nitride heterostructure creates large spin signals
16.08.2017 | Graphene Flagship

nachricht From hot to cold: How to move objects at the nanoscale
10.08.2017 | Scuola Internazionale Superiore di Studi Avanzati

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Exotic quantum states made from light: Physicists create optical “wells” for a super-photon

Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.

Light particles (photons) occur as tiny, indivisible portions. Many thousands of these light portions can be merged to form a single super-photon if they are...

Im Focus: Circular RNA linked to brain function

For the first time, scientists have shown that circular RNA is linked to brain function. When a RNA molecule called Cdr1as was deleted from the genome of mice, the animals had problems filtering out unnecessary information – like patients suffering from neuropsychiatric disorders.

While hundreds of circular RNAs (circRNAs) are abundant in mammalian brains, one big question has remained unanswered: What are they actually good for? In the...

Im Focus: RAVAN CubeSat measures Earth's outgoing energy

An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.

The Radiometer Assessment using Vertically Aligned Nanotubes (RAVAN) CubeSat was launched into low-Earth orbit on Nov. 11, 2016, in order to test new...

Im Focus: Scientists shine new light on the “other high temperature superconductor”

A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.

Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...

Im Focus: Scientists improve forecast of increasing hazard on Ecuadorian volcano

Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).

The Andes region in which Cotopaxi volcano is located is known to contain some of the world's most serious volcanic hazard. A mid- to large-size eruption has...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Call for Papers – ICNFT 2018, 5th International Conference on New Forming Technology

16.08.2017 | Event News

Sustainability is the business model of tomorrow

04.08.2017 | Event News

Clash of Realities 2017: Registration now open. International Conference at TH Köln

26.07.2017 | Event News

 
Latest News

New thruster design increases efficiency for future spaceflight

16.08.2017 | Physics and Astronomy

Transporting spin: A graphene and boron nitride heterostructure creates large spin signals

16.08.2017 | Materials Sciences

A new method for the 3-D printing of living tissues

16.08.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>