Abstract
Changes in the geomagnetic field produce ground induced currents that can have impacts on artificial systems such as pipelines. According to these, geomagnetic perturbations observed during June 2005 are studied. The data measured on the Ottawa River Valley pipeline verify the appearance of induced currents greater than 700 mA and additional potential values larger than ?850 V that can produce additional corrosive effects.
Highlights
Geomagnetic disturbances can impact the operational reliability of buried pipelines
Silbergleit the electric currents that spread though the ground during magnetic storms and substorms
Telluric currents produced by geomagnetic disturbances during magnetic storms and substorms can cause variations in the difference in potential with the ground; they modify the electrochemical conditions of the pipe leaving which can be temporarily not protected [6]-[8]
Summary
Geomagnetic disturbances can impact the operational reliability of buried pipelines. Storm events provide compelling evidence of a general increase of corrosion in pipeline systems. The cathodic protection (CP) is to prevent corrosion by maintaining buried pipelines at a constant potential with respect to the soil. The PV readings are irregular and at times full outside the safe zone They are influenced by the geomagnetic activity, the Earth conductivity and the pipeline structure [1]. Telluric currents produced by geomagnetic disturbances during magnetic storms and substorms can cause variations in the difference in potential with the ground; they modify the electrochemical conditions of the pipe leaving which can be temporarily not protected [6]-[8]. We examined the electromagnetic response of a buried pipeline in soil (placed in the Otawa River Valley) during a perturbed periods
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