Decommissioned Draugen FLP awaiting further dismantling

The decommissioned Draugen Floating Loading Platform has been in operation at the Draugen Field offshore Norway since 1993. Commissioned by Shell it was removed and temporarily accommodated in the Bømlafjord at the Kvaerner Stord base, Norway. Our job: reviewing plan and cover this operation! reviewed the first presented plan

Before the FLP could be decommissioned the contractor presented a plan how to downend and decommission the spar to Shell. As review partner calculated what would happen during the operation. For a total insight Hubert (Senior Project Engineer at visited the FLP.

Looking down on one riser

Looking down on one riser

Hubert: “It was a great decommissioning project to support. The fjords are incredibly deep and the spar looked like a little bobber in the big fjord. We have studied the Draugen FLPs’ history extensively: how the FLP was filled with ballast water and iron ore and how the FLP was constructed. By climbing the spar I noticed damage, which we certainly had to include in our calculations. After this research we concluded that reverse installation wasn’t possible as the plan suggested.” handed over a comprehensive report advising against the proposed plan. The contractor’s plan did not take in account the structural integrity, how the spar was installed originally and the damage in the spar-middle. produced a full report with notes, comments and possible solutions to Shell. One of the ideas was a lifting frame, like a bucket, at the bottom end of the spar.

Finally the Draugen FLW decommissioned

After a contractor switch, Scaldis did get the job with its HLV Rambiz. positively assessed Scaldis’ plan which included our previous recommendations. First the Rambiz lifted off the helideck and topside from the spar. A subsea lifting frame was installed at the bottom end of the spar. Rambiz lifted the bottom end, while a tug controlled the heading of the top of the spar coming down. After completion of the down ending into the horizontal floating position, the spar was transported suspended in the Rambiz cranes to the Kvaerner dry-dock. There the spar was laid down in the dock for further dismantling.

Check this nice video:

Draugen Field, Norway

Also need Consultancy or Engineering for a decommissioning job?

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