The problem is thought to be isolated to the Genesis spar, which has a unique riser and guide configuration. Nevertheless spar fabricator CSO Aker is adjusting the design on the units it has under construction in order to remove any risk of similar problems arising elsewhere.
While the specific cause of the cracking is under investigation, it is understood to involve the design configuration of the integrated buoyancy cans and riser guide frame, along with stronger than anticipated deep ocean currents and general spar motion characteristics that combine to cause excessive riser movement.
The
