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Weld Flaw Acceptance Criteria for New Pipelines Event

Fri, 13 May, 2022

The Welding Institute’s Structural Integrity Technical Group will be hosting an online event titled, ‘Weld Flaw Acceptance Criteria for New Pipelines,’ on the 21 June 2022.


This online event will explore the implementation of fracture mechanics methods (Engineering Critical Assessment = ECA) to derive flaw acceptance criteria for pipeline girth welds. Overviews of the main standards applied for this purpose will be discussed, e.g. CSA Z662, API 1104 and DNV-OS-F101/RP-F108. Challenges introduced with the use of ECA will be discussed and the event will be rounded off with presentations on fatigue assessment for offshore risers and future challenges for the use of ECA on pipelines.


Presentations will be delivered by experts from industry including:

Practical Implementation of ECA Based Weld Flaw Acceptance Criteria in Canada - David Horsley, Consultant (Horsley Consulting Ltd)

API 1104 Appendix A – Past, Present and Future - Dr Robin Gordon, Senior VP (Microalloying International)

DNV’s Recommended Approach for Assessing Flaws in Pipeline and Riser Girth Welds – DNV-RP-F108 - Steinar Bjerke, Principal Specialist (DNV)

Challenges Implementing ECA Based Flaw Acceptance Criteria - David Reeves, Senior Engineer Materials and Welding (Nova People AG)

Quantifying Probability of Fatigue Failure in Offshore Risers; an Alternative to the Use of Design Fatigue Factors (DFF) - Dr Isabel Hadley, Technology Fellow (TWI Ltd)

Presentation co-authored by: Alexandre Galiani Garmbis (Petrobras), Justin Crapps (ExxonMobil)

ECAs. The Future? - Dr Andrew Cosham, Consultant (Ninth Planet Engineering Limited)


Discover more about the full event and registration details here.

For more information please email: