External Corrosion
The external corrosion of pipelines is controlled by coatings
and cathodic protection. External
corrosion accounts for about 25% of ruptures on Canadian transmission
pipelines. The Canadian Energy Pipeline Association
(CEPA) represents the pipeline companies that are responsible for transporting
more than 95% of the crude oil and natural gas produced in Canada. Our member
companies operate more than
100 000 kilometres of pipeline that crisscross Canada delivering
natural gas and petroleum products that fuel homes and our industrial output.
External corrosion also accounts for about 15% of upstream pipelines.
Recommended practice to control external corrosion on buried or submerged
metallic piping systems is described in The Canadian
Gas Association's recommended
practice OCC-1-1996.
The objective of the PICon/External Corrosion section is to disseminate
information on pipeline external corrosion. Please let PICon know your ideas, suggestions
and thoughts on issues related to pipeline external corrosion.
PICon organizes an online journal. The schedule and papers published by the Journal are available at
PICon Journal.
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