Welding Residual Stress Measurements and Analysis for Gas Pipelines

This project concerns the research into welding residual stress values and the effect that they have on the overall pipework repurposing assessment route described in relevant hydrogen standards. Currently, overly conservative values need to be applied for welding residual stresses in any repurposing assessment. This project aims to build evidence on actual and modelled residual stresses seen within the pipelines industries, with a focus on natural gas pipelines. As the welding residual stress is a critical aspect of the fracture mechanics assessment, any improvements which can be gained would have an overall positive impact on the assessment results.