The work will be done at a water depth of 140m.
Engineering work for the project has already begun and the offshore works are due to start in July.
DOF Subsea's long-term chartered construction support vessel, Normand Reach, will support the replacement of the DCC production riser.
The scope of work includes all activities associated with the existing riser recovery, existing buoyancy removal, new buoyancy installation, new riser reinstallation and all associated surveys.
The work will involve a significant dedicated project team drawn mostly from DOF Subsea's personnel pool.