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12 May 2008 15:50 GMT | more prices >>

DNV weighs in with anchor design tool



By Upstream staff 

Norwegian classification society and risk management specialist Det Norske Veritas (DNV) has launched specialised graphical software for the design of fluke anchors, used to moor semi-submersible drilling rigs and other vessels.

DNV said its Digin visual design package was intended to help engineers predict the behaviour of fluke anchors on different kinds of seabeds.

The company said the devastating effects of hurricanes Katrina and Rita in the US Gulf of Mexico in 2005, when many drilling units and production units dragged or broke free of their anchors, had intensified the focus on the reliability of marine mooring systems.

In the highly developed North Sea, anchor drag is a particular risk on a seabed “congested” with scores of pipelines and other subsea structures, DNV said in a statement.

Digin is an enhanced version of a package DNV developed for internal use to model the use of fluke anchors in clay. The software allows a database of anchor designs to be tested under a variety of seabed and deployment scenarios.


06 May 2008 06:17 GMT  | last updated: 06 May 2008 06:17 GMT

Anchors away: Chevron's Typhoon tension-leg platform was flipped by Hurricane Rita
 

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