October 16, 2018
Rasoul Hejazi’s work tackles the fundamental dynamic behaviour of large diameter steel catenary riser (SCR) systems under random ocean waves and currents in the North West Shelf (NWS). Rasoul’s refined fatigue design procedure for SCRs will enable the use of larger diameter SCRs by moving the touchdown point (TDP) and thereby causing the distribution of fatigue damage over a longer span.
“I’ve created a realistic coupled motion analysis by combining floating structures and mooring lines with properly estimated TDP motion of SCRs over their lifetime. This, combined with input data from industry partners, provides validation of the numerical analysis results.”
The direct impact of refining the SCRs fatigue design procedure, means potential cost savings through the need for less subsea infrastructure, while at the same time allowing for an increase in production through the use of large diameter SCRs.