DCVG.com

Training Course Level 1

Session 1. Day 1 Fundamental Electrochemistry.
1. The requirements for Corrosion.
2. The Pourbaix Diagram.
3. Cathodic Electrochemical processes.
4. Cathodic Protection and Cathode Films.
5. Organic and Inorganic Coatings.

Session 2. Day 1 Practical Electrochemistry
6. Pipe to Soil Potential- measurement and limitations
7. The relationship between Coatings and CP.
8. The limitations of CP.
9. CP current demands for different coating quality.
10. Metal Loss, Stress Corrosion Cracking etc.

Session 3. Day 1 Coating Failure Mechanisms

11 General Discussion.
12 Tape Coatings.
13. Asphalt and Coal Tar.
14. Thin Film coatings (FBE).
15. Other Coating systems.

Session 4. Day 1 The DCVG Technique

16. Fundamentals of the DCVG technique.
17. Detailed explanation of DCVG equipment
18. The DCVG Pulse (Meter Indications). Demo.
19. DCVG Signal electrical circuit
20. DCVG Coating fault detection method

Session 5. Day 2 DCVG Electrical Measurements.
21. Understanding the DCVG Signal Amplitude.
22. Electrical Measurements for Severity of Defects
23. Coating fault shape using iso-potential plots.
24. Determining the Corrosion Behaviour of Defects.
25. Determining where Defects get their CP from
26. DC Traction and other Interference effects.
27. Typical DCVG results

Session 6. Day 2 Special uses for DCVG Technology.
28. Surveying parallel pipelines
29. Complex pipeline networks
30. Using DCVG to investigate CP systems
31. Test Posts, Insulating Flanges, Cased Crossings
32. The use of DCVG to control Cathodic Protection