Venko Offshore awarded Conbit a contract for the offshore replacement of two diesel storage tanks on the Goeree platform located in the Dutch sector of the North Sea. Conbit was given this project because of our below-deck lifting know-how and extensive experience in offshore operations. The project was executed during the winter.
The tanks, over 35 years old, were starting to show signs of corrosion. The platforms’ owner, RWS (Rijkswaterstaat) decided that the tanks needed to be replaced and assigned the project to Venko.
Each of the new tanks, including its supporting structure, weighs approximately 9 tonnes, is 2.1 m in diameter and is 6 m long. The tanks are positioned under the helideck and supported by saddles and beams.
During the preparation and execution phase, there were two main challenges to overcome:
- Replacing the tanks during the winter
- Avoiding damage to the new tanks