Technical Seminar for Cathodic Protection to GOGC Design .... CorrPrinciples... · And Cathodic...

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Technical Seminar for Cathodic Protection to GOGC Design Unit Specialists Dr. Nick Kioupis, Cathodic & Lightning Protection Section Head, DESFA

Transcript of Technical Seminar for Cathodic Protection to GOGC Design .... CorrPrinciples... · And Cathodic...

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Technical Seminar for Cathodic Protection

to GOGC Design Unit Specialists

Dr. Nick Kioupis, Cathodic & Lightning Protection

Section Head, DESFA

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Corrosion Principles

Anodic (corrosion)

Cathodic in neutral or alkaline environment

Cathodic in acid or anaerobic conditions

Cathodic Water dissolution (in too negative

potentials)

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Corrosion Principles

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Corrosion Principles

Cu/CuSO4

Reference Electrode

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Corrosion Principles

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Corrosion Principles

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Corrosion Principles

Kinetics vs. Thermodynamics

Evans and Pourbaix Diagrams

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Corrosion Principles

Evans diagram for metal M in

dearated acid solution

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Corrosion Principles

Evans diagram (as previous) showing net

anodic and cathodic currents

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Corrosion Principles

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Differential Aeration Cells

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Differential Aeration Cells

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Other Differential Corrosion Cells

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Other Differential Corrosion Cells

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Other Differential Corrosion Cells

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Other Differential Corrosion Cells

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Other Differential Corrosion Cells

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Corrosion from galvanic cells from contact with foreign

cathodic structures


P1a spa dec.16.10

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12 Standards_Technical Seminar for Cathodic Protection to GOGC Design

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