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Keywords: Voltage
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Proceedings Papers

AC Power Interactions with Pipelines – the “Usual Suspect,” the Ugly Geology, and, Finally, the Weird: Faulty AC Power Conditioning Capacitors Interacting with Well-Coated Pipeline

Cal Chapman, P.E.
... coating on the pipeline. The equation is: (1) Iac = 8 * Vac / ( rho * pi * diam ) Where Iac = the current density related to AC power induced on pipeline Vac = AC voltage on pipeline Rho = soil resistivity in ohm-meters Pi = the constant 3.14159 … Diam = approximate...
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Proceedings Papers

ACVG or DCVG – Does It Matter? Absolutely It Does

Jim Walton
...INTRODUCTION Abstract With the most recent Notice of Proposed Rule Making (NPRM)(1) that addresses pipeline integrity and indirect inspections, there is language that relates to Direct Current Voltage Gradient (DCVG) and Alternating Current Voltage Gradient (ACVG) surveys including...
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Proceedings Papers

Implementation of Advanced Electronic Techniques for Remote Monitoring of Cathodic Protection, Scour and Environmental Conditions for Marine Bridges in Florida

Richard J. Kessler, Rodney G. Powers, Ivan R. Lasa
...anodes cathodes cathodic protection concrete corrosion data collection monitoring potentials scour telemetry voltage wireless INTRODUCTION The galvanic systems are simple to install, requiring only a direct connection to the protected metal, and require minimal monitoring over...
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Proceedings Papers

A Novel Technique to Studying the Effect of a VCI

Paul Jaeger, Luis F. Garfias-Mesias, Markus Büchler
... environment. The test consisted of two containers testing, in triplicate, 25μm thick copper wire. The inhibited samples showed less increases in the measured voltage than the specimens not inhibited. The decrease in the voltage could be correlated to the corrosion rate and the efficacy of the VCI. The SEM...
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