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98706 NEW TECHNIQUES FOR GALVANIC CORROSION IN PIPING SYSTEMS

Picture for 98706 NEW TECHNIQUES FOR GALVANIC CORROSION
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Product Number: 51300-98706-SG
ISBN: 98706 1998 CP
Author: David A. Shifler, Harvey P. Hack, Dennis Melton
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Mixtures of piping materials have been used in several piping systems during ship retrofitting . The use of dissimilar alloys may initiate galvanic corrosion of the more anodic, electronegative member which could lead to piping failures. Several control methods have been applied which may introduce secondary corrosion and require periodic inspection and replacement. This study involved several newer galvanic corrosion control methods (cathodic protection, barrier coatings, bi-electrode), which were used in mockup piping tests to monitor their effectiveness. These newer methods may provide alternative galvanic corrosion control techniques that may allow selective use of mixed piping systems with a minimization of shutdowns for removing, inspecting, and replacing system components. Keywords: Bi-electrode device, bi-electrode, galvanic corrosion, copper-nickel, titanium, piping, marine corrosion, saltwater, Alloy 625, corrosion control.
Mixtures of piping materials have been used in several piping systems during ship retrofitting . The use of dissimilar alloys may initiate galvanic corrosion of the more anodic, electronegative member which could lead to piping failures. Several control methods have been applied which may introduce secondary corrosion and require periodic inspection and replacement. This study involved several newer galvanic corrosion control methods (cathodic protection, barrier coatings, bi-electrode), which were used in mockup piping tests to monitor their effectiveness. These newer methods may provide alternative galvanic corrosion control techniques that may allow selective use of mixed piping systems with a minimization of shutdowns for removing, inspecting, and replacing system components. Keywords: Bi-electrode device, bi-electrode, galvanic corrosion, copper-nickel, titanium, piping, marine corrosion, saltwater, Alloy 625, corrosion control.
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