Shetland Project Snapshots

Shetland Decommissioning Consortium has experience of some significant projects under its belt, including two major contracts summarised below:

Frigg – TCP2 Module Support Frame

Aker Solutions contracted with the consortium’s Peterson SBS and Veolia Environmental Services to decommission Total’s Treatment and Compression Platform 2 (TCP2) module support frame (MSF) as part of the Frigg Cessation Project. At about 8,730 tonnes, the MSF was one of the largest single decommissioning lifts yet in the North Sea.

Peterson SBS managed the engineering, planning, construction, fabrication and preparatory works to ready the site and barge for the trailer load-in of the MSF from the S600 (skid railed) launch barge. They also supplied cranage, haulage, cargo handling and labour. A large number of contractors and sub contractors were involved, with specialist plant and labour provided by local companies and steelworks by on-site fabricators.

Staged decommissioning was undertaken by Veolia, including: a review of the inventory; decontamination, involving the opening, inspection, sampling and testing of systems, pipelines and vessels; draining of all fluids and the removal of asbestos, waste electrical and electronic equipment. Veolia planned and managed its own skilled operators and specialist subcontractors for the three-month decontamination process. Deconstruction was then also overseen by Veolia, including planning and engineering of the method, and using a specialist subcontractor for the works.

Frigg - MCP-01 Platform

Peterson SBS and Veolia Environmental Services also worked with main contractor Aker Solutions on decommissioning the Manifold and Compression Platform (MCP-01) under the Frigg Cessation Project in 2008. The project required shuttling daily deliveries of supplies and waste materials. Some 6,600 tonnes of scrap and waste in containers and medium-size pieces arrived at the Greenhead Base.

Agency services, onshore logistics and transport requirements for all shuttling vessels were provided by Peterson SBS. This included certification and tracking of offshore containers (CCUs) and the cyclic transport, tipping and inspection process involved with the waste skips. It also included packing CCUs, supply of all logistics, equipment and consumables, along with food for a 330-strong workforce offshore. All supplies and requirements were sourced, certified, packaged and tracked.

Veolia was responsible for all waste management aspects of the operations. Their work encompassed: packaging and disposal of hazardous wastes; inspection of materials; segregating material streams; processing into transport sizes; stockpiling and load-out; and maintaining environmental accounting.