Advanced Cathodic Protection

DAY ONE

• Fundamentals of Metallurgy

–      Material Selection

–      Material/Fluid compatibility

–      Topside/ Subsea Materials

• Fundamentals of Corrosion
• Electrochemical reaction/ series
• Types of Corrosion

–      General or uniform corrosion

–      Localised corrosion

• Galvanic corrosion
• Pitting corrosion
• Crevice corrosion
• HISC
• Corrosion control and prevention methods
• Inhibitors
• Selection and testing of inhibitors
• Inhibitor Availability & Inhibitor Efficiency
• Case study 1 & 2

DAY TWO

• Introduction to Cathodic Protection (CP)
• Principles of Cathodic Protection
• Criteria for Cathodic Protection
• Impressed versus Sacrificial
• Sacrificial Anode Cathodic Protection (SACP)

–      Requirements for SACP

–      Anode materials

• Impressed Current Cathodic Protection (ICCP)

–      ICCP anodes

–      Power sources

–      Electrical connections

• Cathodic protection system design

–      Anode resistances

–      Coating breakdown factor

–      Current densities

• Effect of temperature on CP design
• Review of DNV RP B401
• CP design calculations
• Case study 3& 4 – Team exercise
• Cathodic disbonding and blistering

DAY THREE

• Corrosion Monitoring and Management
• CP and concrete
• Cathodic protection of steel in concrete
• Ground bed design (Impressed system)
• Current drain test
• Sacrificial anode system in soil
• Calcareous films
• Case studies 5 & 6
• Underground pipelines
• Cathodic Protection of underground pipelines
• Potential decay along pipeline
• CP marine platforms
• Reference potential devices
• CP Potential distribution
• Current interrupters
• Test rectifiers
• Holiday detectors

DAY FOUR

• Stray Current Corrosion and prevention methods
• Sources of Stray Current
• Effects of Stray Current on metallic structures
• Mitigation of interference effects
• Coating Selection
• Pipeline Coatings
• Characteristics of Pipeline Coatings
• Types of Pipeline Coatings
• Case studies 7 & 8
• Specification and Inspection (Industry standard review)
• Coating failures
• Field Joint Coatings and applications
• Factory- applied vs. Field- applied
• Cathodic Protection and Coatings

DAY FIVE

• Pipeline Inspection: Survey methods and Evaluation techniques
• Overview of NACE Standard on “Pipeline External Corrosion Direct Assessment Methodology”
• Long range ultrasonic testing (LRUT)
• Advantages and Limitations of LRUT
• Conventional UT vs. LRUT
• Case studies 5 & 6
• Introduction to CPCM technology
• Conventional current measuring methods vs. CPCM
• Overview of course
• End of course Exam (optional)