1. Cathodic Protection Presentation on Cathodic Protection System, at IOCL KBPL Kandla. Dt. 19.04.2006 By Corrosion Matters Hyderabad An Advisory services company.

2. Welcome

3. CORROSION “The deterioration of a material, usually a metal, that results from a reaction with its environment.”

4. TYPICAL CORROSION CELL

5. FORMS OF CORROSION GENERALLOCALIZEDGALVANIC ENVIRONMENTAL CRACKING VELOCITY EFFECT INTERGRANULAR DEALLOYINGFRETTING HIGH- TEMPERATURE

6. SOME VARIABLES IN THE CORROSION CONTROL PROCESS  pH  OXYGEN  RESISTIVITY  TEMPERATURE  COATING PROPERTIES  ELECTROLYTE MOISTURE CONTENT  ANODE MATERIAL  ANODE LOCATION  ANODE SIZE  ANODE SHAPE  STRUCTURE MATERIAL  BACTERIA  OTHER MINERALS IN ELECTROLYTE

7. CORROSION CONTROL MEASURES  MATERIALS SELECTION  DESIGN CONSIDERATIONS  PROTECTIVE COATINGS AND LININGS  CATHODIC PROTECTION  INHIBITORS

8. BASIC CATHODIC PROTECTION

9. BASIC CATHODIC PROTECTION II

10. SOME CP DESIGN CONSIDERATIONS  ELECTROLYTE RESISTIVITY  SYSTEM LIFE REQUIREMENTS  COATING EFFICIENCY  CURRENT REQUIRED FOR PROTECTION  ECONOMIC FACTORS  PHYSICAL CONFIGURATION OF STRUCTURE  MATERIALS USED IN STRUCTURE.  ANODE CHARACTERISTICS

11. CP CONSTRUCTION CONSIDERATIONS  PREPARATION OF METAL SURFACE FOR COATING  PROPER SELECTION AND APPLICATION OF COATING  PROCUREMENT OF CP EQUIPMENT MEETING SPECIFICATIONS  SUPERVISION OF INSTALLATION BY QUALIFIED PERSONNEL  ENERGIZING, ADJUSTMENT, AND TESTING BY QUALIFIED PERSONNEL

12. MAINTENANCE AND REPAIR CONSIDERATIONS  WEEKLY RECTIFIER READINGS RECORDED AND SENT TO DISTRICT CP SPECIALIST FOR REVIEW  ANNUAL PROTECTIVE POTENTIAL SURVEY PERFORMED BY QUALIFIED PERSONNEL  NECESSARY SYSTEM ADJUSTMENTS MADE BY QUALIFIED PERSONNEL  NECESSARY REPAIRS MADE AS SOON AS POSSIBLE AND RETEST IF NECESSARY

13. SUMMARY  THERE ARE MANY FORMS AND MECHANISMS THAT CAUSE CORROSION.  PROPER CORROSION CONTROL SAVES MONEY, AND IMPROVES OPERABILITY AND SAFETY AND PROTECTS THE ENVIRONMENT.  CATHODIC PROTECTION IS A PROVEN EFFECTIVE METHOD OF CORROSION CONTROL.  CORROSION CONTROL IS COMPLEX, REQUIRING SPECIAL EXPERTISE FOR SUCCESSFUL DESIGN, CONSTRUCTION, AND MAINTENANCE

14. Sketch for CP System

15. CP System for Existing Buried Lines

16. CP Station for Pipelines

17. Anode Junction Box

18. Deepwell Anode Groundbed

19. Indoor Type Rectifier

20. Outdoor Type Rectifier

21. Hi Silicon Chromium Anodes

22. Titanium Rod Type Anode

23. Sacrificial Anode - Mg

24. Mg. Anodes with tail cables

25. Bullet Tanks CP System

26. Measurement of Potentials

27. Railcrossings CP System

28. Survey for Stray current CP

29. Graphical presentation of Data

30. Pourbix Diagram for Corrosion Phenomenon

31. Temporary System for Current Requirement

32. End. Thank You We also make Electro Chlorination Systems