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Miko Marine will provide magnetic hull closures for Modec's FPSO, which will operate in the offshore Bacalhau field, located in the Santos Basin pre-salt
The Norwegian company Miko Marine will deliver four cofferdams and water inlet covers for a Modec FPSO that is being built at a shipyard in China and will operate in Equinor's Bacalhau field, in the Brazilian pre-salt of the Santos Basin. According to the company, the new sea chest inlet covers are scheduled for delivery in March 2021.
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These rigs feature Miko's magnetic attachments and will be available to be installed and used repeatedly without the need for welding or permanent hull fixtures.
“They offer the benefit of allowing repairs and maintenance to be carried out within sea chests whenever necessary and without the need for dry docking, thus allowing the FPSO to remain in station,” Miko said. Marine.
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Modec's FPSO design in the Bacalhau field will use high-powered permanent magnets to position and hold the cover in place. Depending on the cover size, four to ten powerful Miko MAM permanent magnets are used to hold the cofferdam in place.
“With each magnet being able to support up to 2.000 kg, it is possible to obtain an immediate watertight seal for the closures, without the need for any other fastening device being installed in the hull. The flotation material is integrated into the sealing plates and this makes them neutrally buoyant and easy to handle underwater by ROV,” explained Miko Marine.
Additionally, Miko said each magnet is secured to its fastener by a flexible joint that allows the plate to be maneuvered and positioned precisely against the Modec FPSO hull before being clamped into place.
“When the repair work is complete, the magnets are simply released with their release lever turned by a diver or ROV, allowing the blank to be quickly retrieved by a crane and stored onboard,” the Norwegian company said.
