Technocean Subsea completes two decommissioning campaignsProjects and Operations // June 18, 2014
Technocean Subsea has completed decommissioning work on the Angus Pipeline PL1857 Flushing project for HESS Limited. The company has also executed a second successful campaign for the client which was completed in April.
Technocean Subsea deployed Reef Despina, a construction support vessel, to complete the first workscope, which took place in the Fife, Fergus, Flora and Angus fields, commonly known as FFFA, located in the central North Sea in water depths of 70m.
As part of the phased decommissioning programme, Technocean Subsea performed the removal of the PL1857 pipeline contents with ROV assistance and delivered a filtration package, suction pump and associated down lines to evacuate pipeline contents to the vessel.
Technocean Subsea delivered a multi-skilled team to ensure project completion, flushing 290m3 of diesel from the Angus pipeline and recovering this content to deck with a flushing result of 180m3 pure diesel.
Following the successful engineering and management of Technocean Subsea’s first decommissioning project of this kind, the specialist subsea contractor was awarded a further decommissioning workscope with HESS Limited. Again, supporting the Angus Pipeline PL1857 Flushing project, Technocean Subsea undertook the recovery of an 80 tonne wellhead protection structure which was successfully completed this month. Both the campaigns were executed safely and efficiently.