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Title: Overview Of Gri Research On Cathodic Protection
Author: Thomas J. Barlo, Steven R. Kramer
Source: American Gas Association 1984
Year Published: 1984
Abstract: The Gas Research Institute (GRI) is funding research af Batlelle Columbus Laboratories (BCL) with the ultimate goal of reducing the number of corrosion-related leaks on steel gas-distribution piping. Research is in progress to develop instruments that can eliminate IR drop errors inherent in all pipe-to-soil potentials so that the true level of cathodic protection can be assessed. A microprocessor-based field prototype applicable to piping with impressedcurrent systems is being evaluated on operating gas distribution piping. An approach for sacrificial-anode (and impressed-current) systems is under development using AC-impedance measurements. Corrosion currents (rates) on unprotected pipe may also be obtainable with this approach.

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