Corrosion Control Engineer

1. What is corrosion?

2. Corrosion Cell

3. How to detect corrosion

4. Corrosion prevention methods

4.1 Protective coating

4.2 Cathodic protection

5. Corrosion prevention in Manitoba Hydro

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Increase Energy

Natural State

InstallationProcessed Material

Back to Natural State

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

e-

Metallic Path

e-

e-

e-

- ions

e-

e-

e-

+ ions

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Iron - Fe

Electrolyte

Water, soil,

etc

Fe++

e-e-

2H+O=H2O Fe(OH)2

H2OOH-H+

OH-

O2

Fe++e-e-

H2O H+

Fe++

e-e- H2OOH-

H+

OH-

2Fe(OH)2 + O2==Fe2 O3 + H2O

e-e-

H2O H+Fe++

2Fe(OH)2 + O2==Fe2 O3 + H2O

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

H+

Electrolyte

Water, soil,

etc H2

e-

e-

H+

H+

H2

e-

e-

H+

H+

H0

e-

e-

H+

H0

H0

H0

H0

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Conventional

electric current

direction

Electrolyte

Active Noble

+--V

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

2011

• Monthly calibration

2013

• Yearly calibration

2015

• 20 years calibration

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

2011• Voltmeter

2015• Computerized Data-

collector

Monitoring & evaluation | Data collectors

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Corrosion Prevention Methods

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Corrosion Prevention Methods

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Corrosion Prevention Methods

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Corrosion Prevention Methods

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Cathodic protection by galvanic anodes

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Cathodic protection by

impressed current systems

Components of impressed current systems

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

Impressed current systems of

steel natural gas pipelines

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015

IEEE PES Winnipeg | Fernando Velandia P. Eng. | Corrosion in Action | October 2015