Course Overview:
This course covers the fundamentals of corrosion, focusing on the electrochemical nature of corrosion, the different mechanisms of corrosion, and the environment COMBINATIONS THAT CAUSE IT.
A basic understanding of cathodic protection is possible, including how it is designed, the criteria and methods such as impressed current and sacrificial anodes.
The course also addresses corrosion inspection, various monitoring techniques, and choosing the inspection points.
It also touches the methods for the prevention of corrosion such as the selection of appropriate materials, restrictions of environments, and the application of coatings.
The program targets engineers in maintenance, inspection, corrosion control and plant engineers who are engaged in protecting tanks, pipelines, pressure vessels and so on.
Course Objectives:
By the end of the course you should be able to:
- To layout the fundamental theories of corrosion,
- To enable the attendees to grasp the basics of electrochemical nature of corrosion, To present different forms of corrosion from various mechanisms and related environmental factors
- To understand cathodic protection how works
- To understand the Criteria for cathodic protection,
- To learn about potential measurement, current requirements, anodic materials, etc.
- To understand system design including bed design, cabling and so on,
- To know how stray currents are controlled,
- To learn about certain specific applications of cathodic protection,
- To Know about Inspection of CP system, Selection of inspection points, Elements of Corrosion Monitoring
- Systems and Monitoring Intervals (API 651)
Who Should Attend?
All engineers working in maintenance and inspection; whether they are mechanical or electrical engineers should attend this course. This course will also prove as a refresher for design engineers and corrosion engineers. Plant engineers concerned with corrosion protection of tanks, pipelines, pressure vessels will also find this course useful.
Course Outlines:
Corrosion Fundamentals:
Corrosion Fundamentals:
Corrosion Fundamentals:
Corrosion Fundamentals:
Corrosion Fundamentals:
- What is corrosion, Forms of corrosion
- Corrosion as an Electrochemical Reaction
- General Forms of Electrochemical Reactions
- Controlling Corrosion Rate by Controlling of Oxidation/Reduction
- Reaction
- Polarization and Passivation
- Electrolytes, Electrodes, Electrochemical cells
- Electrochemical Potentials, Standard Electrode Potentials,
- Galvanic Series
- Thermodynamic Concepts and Pourbaix Diagrams
- Area Effect, Distance Effect, Effect of Environment
Forms of Corrosion:
Forms of Corrosion:
- Uniform Corrosion and Pitting Corrosion
- Galvanic Corrosion, Crevice Corrosion
- Intergranular Corrosion, Selective Leaching/Deploying
- Erosion-Corrosion, Stress Corrosion, Hydrogen Embrittlement
- Sulphide Stress Cracking (SSC) and Stress Orientated Hydrogen
- Induced Cracking (SOHIC)
Cathodic Protection:
Cathodic Protection:
- Impressed Current Method
- Protection Criteria and Measuring Potentials for Protection
- Criteria
- Current Requirements Impressed Current Anodes and
- Anodic Materials
- Wiring and Cabling of Anodes, Backfill/ Ground Beds for Anodes
- System Design
- Distribution of Current and Interference, Stray Currents,
- Controlling Stray Currents
- Sacrificial Anode Method
- Anode Specifications Anode Materials and Performance
- Characteristics
- Sacrificial Anode System–Design for Buried Structures in
- Soils.
- Cathodic Protection Formulas
- General Comments—Requirements for Specific Applications
- Pipe Line Applications, Fixed Structures in Sea Water
- Piles and Well Casings
- Limitations of Cathodic Protection
Corrosion Inspection and Monitoring:
Corrosion Inspection and Monitoring:
- Inspection Selection of inspection points
- Elements of Corrosion Monitoring Systems
- Monitoring Intervals (API 651)
Corrosion Prevention—Other Methods:
Corrosion Prevention—Other Methods:
- Selection of Metals and Alloys
- Modification of Environments
- Design Improvements
- Anodic Protection
- Coatings and linings