Detailed Description :

ode provided engineering personnel to work within the PPCo UK project team to control and monitor the activities of the contractor selected to carry out the removal and dismantling of the Maureen Alpha Platform and associated peripheral equipment.

The project team provided assistance to the contractor with understanding how the platform was to be removed, the sequencing of activities and recovery of technical details relating to the platform fro the PPCo archives.

All contractor calculations and purchase orders were reviewed for technical and commercial acceptability. Key stages of the supply and operations where witnessed.

The approvals process was maintained with the various permits and consents being tracked and obtained in time to ensure that the project could progress to schedule.

The contractors control of material and environmental accounting procedures where defined and reviewed to ensure compliance with the decommissioning plan.

The key operations covered during these phases of the project where:

• detail design, procurement and installation of pump, nitrogen and control systems required to refloat Maureen Alpha;
• Extraction of Maureen Alpha from the seabed and float up to the surface;
• Handling of potentially polluted ballast water and shipment to onshore terminal;
• Tow of Maureen Alpha to deepwater inshore site;
• Removal of Moira Subsea template;
• Removal of subsea flow lines;
• Removal of Maureen Subsea template;
• Removal of ALC offloading column and abandonment of 24” pipeline insitu;
• Mooring of Maureen Alpha and ALC in sheltered location;
• Heavy lift removal of Modules from Maureen Deck; and head of ALC;
• Rotation of ALC to horizontal, removal of its base and preparation for re-use as a breakwater;
• Demating of the Maureen Alpha deck, and its skidding onto quayside for dismantling;
• Afloat piece meal deconstruction and re-cycling of Maureen Alpha substructure;
• Deconstruction and re-cycling of Maureen Alpha Topsides;
• Re-use of lower sections of storage tanks as foundation for quayside extension.

Throughout these operations the technical, environmental and safety issues were monitored and controlled by the personnel integrated into the Client team.