IV-Oil & Gas awarded Conbit a contract for the offshore lifting and offshore installation of a cable riser protection frame on Tennet’s Dolwin Alpha substation, located offshore in the German sector of the North Sea.

The protection frame is a 1.8 x 1.3 m steel column, over 36 meters in height and with a total weight of approximately 14.5 tonnes. The lifting procedure involved the use of a ballasted winch, a hinged upending procedure and the remote release of slings.

IV contracted Conbit because of our specialist lifting know-how, engineering capability and thorough work preparations. By involving Conbit at an early stage in the riser design process, a special installation method could be incorporated.  The project was surveyed, certified and monitored by DNV.

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