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AC Corrosion of Buried or Immersed Pipelines - Recognition, Evaluation, Mitigation and Prevention

Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List | Why WebCorr

 AC Corrosion Course Overview


A.C. voltage on a buried or immersed pipeline is the driving force for the A.C. corrosion processes taking place on the steel surface at coating defects. Among other things, corrosion damage depends on A.C. current density, level of D.C. polarisation, defect geometry, local soil composition and resistivity. Long term A.C. interference on a buried or immersed pipeline can also affect the operation of cathodic protection systems.


This 3-day corrosion short course deals with A.C. corrosion of buried or immersed metallic pipelines due to A.C. interferences caused by inductive, conductive or capacitive coupling with A.C. power systems. This course covers every aspect of AC corrosion: its recognition, assessment, evaluation, measurement, mitigation, prediction and monitoring. Course attendees will get hands-on expereience in using SC-Compass, the computer software for AC corrosion identification, assessment and prediction in compliance with the latest editions of BS EN & NACE standards.


This AC corrosion course is available for in-house training, online and distance learning worldwide. It can also be customized to meet the specific needs of your organization.


Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List

 AC Corrosion Course Outline


1. Basic Electrical Concepts
2. Introduction to Corrosion
3. Terminology and Convention
4. Introduction to AC Corrosion
    4.1 Sources of AC
    4.2 AC Corrosion and Its Recognition
    4.3 Influence of Soil Characteristics on AC Corrosion
    4.4 Influnce of Other Factors on AC Corrosion
5 Assessment of the A.C. influence
   5.1 General
   5.2 Assessment of the level of AC interference
6 Evaluation of the likelihood of A.C. corrosion
   6.1 Prerequisite
         6.1.1 General
         6.1.2 A.C. voltage on the structure
   6.2 A.C. and D.C. current density
         6.2.1 General
         6.2.2 A.C. current density
         6.2.3 High cathodic d.c. current density
         6.2.4 Low cathodic d.c. current density
         6.2.5 AC Current to DC current ratio "Ia.c./Id.c."
         6.2.6 Soil resistivity
   6.3 AC Corrosion rate
   6.4 Pipeline coatings and AC Corrosion
   6.5 Evaluation of the metal loss due to AC Corrosion

   6.6 SC-Compass®:
          Stray Current Corrosion and AC Corrosion - Identification, Assessment and

   6.7 Prediction of the likelihood of AC corrosion using SC-Compass
7 Acceptable interference levels
8 AC Corrosion Measurement techniques
   8.1 Measurements
         8.1.1 General
         8.1.2 Selection of test sites
         8.1.3 Selection of measurement parameter
         8.1.4 Sampling rate for the recording of interference levels
         8.1.5 Accuracy of measuring equipment
         8.1.6 Installation of coupons or probes to calculate current densities
   8.2 D.C. potential measurements
   8.3 A.C. voltage measurements
   8.4 Measurements on coupons and probes
         8.4.1 Installation of coupons or probes
         8.4.2 Current measurements
         8.4.3 Corrosion rate measurements
   8.5 Pipeline metal loss techniques
9 Mitigation measures
   9.1 General
   9.2 Construction measures
         9.2.1 Modification of bedding material
         9.2.2 Installation of isolating joints
         9.2.3 Installation of mitigation wires
         9.2.4 Optimisation of pipeline and/or powerline route
         9.2.5 Power line or pipeline construction
   9.3 Operation measures
         9.3.1 Earthing
         9.3.2 Adjustment of cathodic protection level
         9.3.3 Repair of coating defects
10 AC Corrosion monitoring and maintenance
11 End of course examination


Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses | On-Webex|PPT Slides+Testbank |Course List

  Who Should Attend This AC Corrosion Course
  • Engineers and technologists who are in charge of pipeline cathodic protection systems with AC interferences.

  • Designers who are interested in cathodic protection technology and AC corrosion of buried or immersed pipelines.

  • Technicians and maintenance personnel who deal with installed cathodic protection systems and AC interferences.

  • Facility owners and users who are concerned with AC corrosion.

Successful completion of this corrosion course helps participants prepare for their NACE certification examinations at the Corrosion Technician, Corrosion Technologist and Senior Corrosion Technologist levels.


 Registration for This  AC Corrosion Course


Click here to register online for this corrosion course.

Click here to download the course brochure with registration form.


 In-House Training Corrosion Courses/On-Site Training Corrosion Courses


If you are concerned with corrosion in your company, in-house training or on-site training is a great solution to train a group of employees from design, production, operation, quality assurance, inspection and maintenance, and technical sales and support on corrosion control and corrosion prevention technology. The contents of all our corrosion courses can be customized to fit your organization's needs.


There is no limit to the number of participants required for in-house training corrosion courses. We conduct the in-house training corrosion course at your company's premises worldwide, and at a time convenient to your company.


Click here to contact us for a quotation for in-house training corrosion courses.

 Corrosion Course-On-Demand


All our publicly scheduled corrosion short courses are conducted once a year. However, you do not need to wait for one year if you have missed any of the publicly scheduled corrosion courses as we have this unique corrosion course-on-demand scheme: we will conduct the course just for you (on an one-on-one basis) or for a small group from your company at a time and in a location convenient to you. This option costs significantly less than a full-scale in-house or on-site corrosion training program.


Click here to contact us for a quotation.

 Online Corrosion Courses and Distance Learning Corrosion Courses


All our corrosion short courses are available for online or offline distance learning. You can start an online corrosion course at any time and learn at your own comfortable pace and schedule, whenever and wherever you are. You have around-the-clock access to the interactive and media-rich course materials, virtual labs, course instructions and course assessments. Discussions and questions related to the corrosion courses are posted on the website or exchanged through email for a period up to 3 months. Video conferencing or instant messaging can also be arranged for discussions of course topics. For those who do not have ready access to internet, we can send you our online course materials on a CD-ROM, or DVD, or USB flash drive for offline distance learning.


Click here to to register an online corrosion short course.

Corrosion Course-On-Webex


Webex is hosted by Cisco, a product purpose-built for real-time web communications. If you are an existing user of Webex, or if you are willing to experience the power of Webex, we can conduct the course for you over Webex with audio and video presentations and interactions with the course instructor and other course attendees in real-time. It is just like the physical classroom settings that everyone can interact with each other. Your questions will be answered in real time by our instructor.


Click here to contact us for a quotation.


 PowerPoint Slides and Test Banks for Trainers, Instructors, Tutors, University Lecturers and Professors


If you are involved in teaching or training, you may wish to purchase a complete set of the trainer's package for this training course. The trainer's package comes complete with ready-to-use PowerPoint slides (fully editable) and test bank (with answer keys). These ready-to-use PowerPoint slides contain high quality color photographs, illustrations, animations, audio and video clips. The test bank contains questions conveniently grouped into four categories: (1) true or false, (2) multiple choice, (3) calculation, and (4) reasoning and open-ended discussions. The trainer's package is suitable for in-house training and university teaching (30 lecture hours). This is exactly the same package that WebCorr uses to deliver our current training course.

The one-time lump sum fee allows your organization to use the training package and also modify it. For example, your organization may modify the course contents and re-name/re-brand the course under your organization’s name. WebCorr only retains the copyright of the original PowerPoint slides and test banks.


Click here to contact us if you need more information on the trainer's package.

Course Outline |Who Should Attend |Registration |In-House |On-Demand |Online Courses |PPT Slides+Testbank |Course List

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