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TitleA telluric current simulator for pipelines
AuthorBoteler, D H; Trichtchenko, L; Blais, C; Pirjola, R
SourceProceedings of CORROSION 2013; 2013 p. 1-18
LinksOnline - En ligne
Alt SeriesEarth Sciences Sector, Contribution Series 20120381
PublisherNACE International
MeetingCORROSION 2013; Orlando; US; March 17-21, 2013
Mediapaper; on-line; digital; DVD
File formatpdf
Subjectsgeophysics; telluric field; telluric signals; telluric surveys, ground; telluric interpretations; pipelines; currents; models; modelling
Illustrationsflow charts; plots; rose diagrams; tables; profiles
ProgramTargeted Hazard Assessments in Northern Canada, Public Safety Geoscience
AbstractTelluric currents due to geomagnetic field variations have long been known to cause variations in pipeto- soil potentials (PSP) on pipelines. These are increasingly being taken into account in the design of cathodic protection systems for new pipelines. Online services are available for modelling telluric currents but cannot handle all pipeline configurations. This paper describes the development of a new
telluric simulator, based on a more versatile modeling technique that can include more details of a pipeline such as branches and other features. This can show the pipe-to-soil potentials produced by specified telluric electric fields. Descriptions are also provided for features of the telluric simulator that allow modeling of the pipeline response using electric fields calculated for past geomagnetic disturbances. These features allow pipeline designs to be checked under realistic conditions and modifications to the design to be tested.