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96496 HOW TO PREVENT GALVANIC CORROSION IN SEAWATER PIPING SYSTEMS

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Product Number: 51300-96496-SG
ISBN: 96469 1996 CP
Author: Per Olav Gartland, Roy Johnsen, Stein Valen, Trend Rogne, John M. Drugli
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Galvanic corrosion on the least nobel material can be a serious problem when two dissimilar materials are coupled together in a seawater piping system. Typical examples of such couples are carbon steel or copper nickel alloys coupled to stainlcss steel or titanium. Mathematical modeling and field experience show that the use of an insulating spool piece may efficiently reduce the galvanic corrosion when the attack has the character of general corrosion, but less efficiently when the attack is more localized. In the latter case the use of internal cathodic protection is a more effective protection against galvanic corrosion than the spool piece.
Galvanic corrosion on the least nobel material can be a serious problem when two dissimilar materials are coupled together in a seawater piping system. Typical examples of such couples are carbon steel or copper nickel alloys coupled to stainlcss steel or titanium. Mathematical modeling and field experience show that the use of an insulating spool piece may efficiently reduce the galvanic corrosion when the attack has the character of general corrosion, but less efficiently when the attack is more localized. In the latter case the use of internal cathodic protection is a more effective protection against galvanic corrosion than the spool piece.
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07244 Mitigation of Galvanic Corrosion in Seawater Piping Systems

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Results of laboratory testing of a new technology for mitigating galvanic corrosion. Incorporated into a device, referred to as the galvanic corrosion inhibiting coupling (GCIC) or bi-electrode device (BED), it creates an ohmic potential drop within the pipe and minimizes the polarization of the dissimilar metals.
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96063 GALVANIC CORROSION IN OIL AND GAS ENVIRONMENTS

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