Corrosion defect assessment - Oil and Gas

Virtual classroom

Available dates:
22-24 March 2022
21-23 November 2022


Specialisation course


About the course

This course enables learners to assess the acceptability of corrosion defects identified on their pipeline assets. Throughout the course, a range of defect assessment approaches will be explored, along with their capabilities and limitations. This course will enable learners to make informed decisions when performing defect assessments, or reviewing the work of others.

At a glance

Available dates

22-24 March 2022

21-23 November 2022


3 days (21 study hours)


Virtual classroom




£2,100 plus VAT

Early Bird

Book up to six weeks in advance of the start date of your chosen course to take advantage of the Early Bird discount


Learning outcomes

  • Describe criteria for fitness-for-service
  • Evaluate various defect assessment approaches, including:
    • ASME B31G method
    • DNVGL-RP-F101 approaches
    • Finite element analysis
    • Engineering criticality assessment
  • Apply appropriate defect assessment approach to determine pipeline fitness-for-service

Course structure

Day by day content

Day one

Corrosion threats

  • Types of corrosion
  • Defect categorisation
  • Corrosion control measures and effectiveness
  • Corrosion monitoring and inspection techniques
  • Case studies

Fitness-for-service assessment

  • Classification of corrosion defects
  • Corrosion rate modelling
  • Corrosion defect interaction
  • Defect assessment approaches
  • Assessment limitations and applicability
  • Determination of fitness-for-service
  • Ongoing management

Day two

ASME B31G approach

  • Differences between original and modified approach
  • Levels of assessment
  • Defect acceptance criteria and measurement uncertainty
  • Defect assessment worked example
  • Long defects and deep pits


  • Differences between Part A and Part B approach
  • Levels of assessment
  • Defect acceptance criteria and measurement uncertainty
  • Defect assessment worked example
  • Longitudinal and circumferential defects and validity limits
  • Supplementary use of Kastner approach



Day three

Use of Finite Element Analysis (FEA)

  • When to move to an FEA based approach
  • Inspection data requirements
  • Application of API579
  • Corrosion defect modelling and determination of acceptability
  • Case study



  • Defects requiring ECA
  • Applicable codes and standards
  • DNVGL-RP-F108 and BS7910 approaches
  • Worked example



Determine the acceptability of a corrosion defect identified by recent ILI run in a multi-phase pipeline system.





What past delegates have said

A great look at the subject with the right level of detail and range of approaches, really recommend this to kick off any career direction towards Integrity Management


Corrosion defect assessment - Oil and Gas

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