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Probabilistic Engineering Critical Assessment Webinar Held

Tue, 05 January, 2021

TWI recently held a webinar on engineering critical assessment, which addressed several initiatives currently underway at TWI and NSIRC.

The event, titled, 'Engineering Critical Assessment: From Qualitative to Quantitative,’ took place on 3 November 2020 and saw almost 600 people register and over 300 attending on the day.

Professor Isabel Hadley, Technology Fellow at TWI’s Materials and Structural Integrity Technology Group, highlighted a number of current projects in her presentation, including:

  • TWI Core Research Programme (CRP): A comparison between ‘top down’ (risk-based inspection/RBI) and ‘bottom-up’ (probabilistic fracture mechanics/PFM) approaches to reliability of pressure vessels and pressure piping, and the implications for codes and standards
  • National Structural Integrity Research Centre (NSIRC): Probabilistic treatment of welding residual stress, and how this can be incorporated into PFM calculations
  • Industry-driven programmes
  • Progress towards incorporating probabilistic fracture mechanics into codes and standards

We would like to thank Professor Hadley for her presentation and Matthew Haslett for his contribution in the Q&A session which followed, as well as thanking all of those who took the time to attend the virtual event.

The recording of the event is now available to watch here.

For more information please email:


contactus@twi.co.uk