Applicability of Cathodic Protection for Underground Infrastructures Operating at Sub-Zero Temperatures

Sankara Papavinasam; Tharani Pannerselvam; Alex Doiron

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Applicability of Cathodic Protection for Underground Infrastructures Operating at Sub-Zero Temperatures

机译：Applicability of Cathodic Protection for Underground Infrastructures Operating at Sub-Zero Temperatures

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摘要

Underground pipelines are normally protected against external corrosion by a combination of an external coating and a cathodic protection (CP) system. However, the applicability of CP in permafrost (sub-zero temperatures) is not fully understood. This paper evaluates the applicability of CP in permafrost regions and discusses various aspects of CP application in sub-zero temperatures. It may appear that application of CP may be redundant for underground infrastructures operating at sub-zero temperatures, that do not suffer from frost-heave and thaw-settlement issues, and are protected by high-performance coatings. However, the application of CP may ensure long-term protection of the infrastructure from corrosion if the CP system can be reliably designed and operated overcoming high-electrical resistance frozen phases.

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来源
《Corrosion: The Journal of Science and Engineering》 |2013年第9期|936-945|共10页
作者
Sankara Papavinasam; Tharani Pannerselvam; Alex Doiron;
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作者单位

CANMET Materials, 184 Longwood South Road, Hamilton, ON, Canada;

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原文格式 PDF
正文语种英语
中图分类金属腐蚀与保护、金属表面处理;
关键词
cathodic protection; coatings; frost-heave; permafrost; pipelines; polymeric coatings; thaw-settlement;

Applicability of Cathodic Protection for Underground Infrastructures Operating at Sub-Zero Temperatures

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