Page 74: of Offshore Engineer Magazine (May/Jun 2014)

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EPIC

Rendering of the US$4.3 billion Gina Krog development. Ramboll is engineering the pipelines. Images from Ramboll.

depth, which will amount to around the more wave action on seabed,” After pipelay, a further 270,000cu. m of 130bar of external pressure, the pipe Andersen said. The parts of Polarled rest- rock is the current estimate to rectify the will have buckle arrestors, i.e. reinforced ing in water depth less than 700m will be free spans and secure the pipeline.” wall thickness sections, with wall thick- concrete-coated to ensure stability and First gas for the Aasta Hansteen devel- ness of 73.9mm every kilometer or so. protection against trawling. opment is also expected in 2017.

The design pressure of the pipeline is Another issue is the sea foor itself. “The Polarled pipeline is the backbone Group expanded its global footprint last 233barG. “We have severe challenges in terms for future feld developments offshore year by partnering its Ramboll Oil &

Another issue the project will need to of uneven and soft clay seabed. Because central Norway and shall feed gas to the Gas business unit with the 20-year-old, contend with is that it runs parallel to of this seabed, there is a lot of seabed Nyhamna terminal for many years to Houston-based Excel Engineering.

other pipelines as it nears the shoreline. prep work for rectifying pipeline free come,” Andersen explained. “This will “Becoming part of a 10,000 people

Part of the pipeline’s route also runs in spans, and that is mobilizing just now,” assist in continuing high amounts of gas strong organization such as the Ramboll the ship traffc lane. Andersen said. “Due to the uneven exported to Europe.” Group is exciting and obviously pro- “Due to the harsh environment of the seabed, Polarled will shave off around 40 vides us with a much larger pool of

Houston ofce opening

Norwegian Sea, all water depths will be peaks and fll in 200,000cu. m of crushed resources to draw on. When Ramboll an issue. The more shallow the water … rock to secure a safe pipeline foundation. Already present in 22 countries, Ramboll approached us and we saw the shared

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