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First Subsea to supply mooring line connectors for Aasta Hansteen spar

LANCASTER, UK -- Subsea mooring specialist First Subsea has been awarded a contract by Hyundai and Technip to supply the mooring line connectors for Statoil’s spar platform in the Aasta Hansteen gas field, in the Norwegian Sea. The platform will be the world' s largest spar platform, and the first of its kind on the Norwegian Continental Shelf.

The spar platform will be moored with 17 Series III Ballgrab subsea mooring connectors at 1,300 m water depth, approximately 300 km west of BodØ, in northern Norway. The connector' s male mandrels are manufactured in compliance with American Bureau of Shipping (ABS) 2009 Approval for specialist subsea mooring connectors. First Subsea is the only manufacturer of offshore mooring connectors to achieve ABS type approval for the design and manufacture of large-scale forgings over 500 mm in diameter.

The Aasta Hansteen spar platform will be the largest spar ever built, with a total hull length of 198 m. When in production in 2017, it is expected to be capable of producing 23 million cu m of gas per day. It has a storage capacity of 160,000 bbl of condensate. The topside dry weigh will be 23,000 metric t, with accommodation for 100 personnel, and the hull dry weight will be 46,000 metric t.

Statoil serves as the operator, holding a 75% interest; OMV holds 15%; and ConocoPhillips holds the remaining 10% interest.

10/15/2013

 

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