Graeme RobertsSenior Subsea Engineer at Subsea 7
Graeme has carried out ECAs for projects and fatigue and fracture internal R&D since 2010. Subsea 7’s internal R&D has helped optimise pipeline ECA whilst fully maintaining pipeline integrity. Subsea 7’s internal R&D has demonstrated, for example, that to attain DNV’s required probability of failure the safety factor for fatigue crack growth can be 1.0.
In 2019 and 2020, the Subsea 7 ECA team delivered this validation programme for reeled pipe. The programme demonstrated that Subsea 7’s ECA approach could predict defect growth using best estimate input and be used for project ECAs with accepted industry input parameters.