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Repair of risers and jacket structures with Cofferdam
PREZIOSO Linjebygg has effectively combined its surface treatment expertise with proven access methods and solutions in the offshore Oil & Gas environment to deliver its Cofferdam concept, which comprises the repair and maintenance (such as surface treatment and coating) of riser and jacket structure members below and above sea level in a confined and protected environment.
Since our first project in 2001 on the Heidrun platform in the Norwegian Sea, the PREZIOSO Linjebygg Cofferdam concept for riser and structural repair and maintenance makes it possible to execute surface repair and treatment in the splash zone during Oil & Gas production.
The Cofferdam secures a safe and dry working environment for our operational personnel and controlled air temperature/humidity conditions to optimise the surface preparation and treatment process
Each Cofferdam is installed by rope access and advanced rigging techniques, i.e. no need for crane support
Our Cofferdams are optimised for the specific structure and surroundings and the collection of waste
We perform our own engineering calculations and design of auxiliary substructures and supports that are required for each project.