Bidding starts for £20m Magnox station cover-up

Aaron Morby 3 days ago
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Bidding is about to start for the £20m project to cocoon the Hunterston A Magnox nuclear power station on the west coast of Scotland.

hunterston-a-magnox
Hunterston A magnox nuclear power station in Ayrshire

The two hexagonal-shaped 64m tall reactor buildings will be cloaked in an aluminium standing seam cladding system fitted directly to the building.

This will protect the Ayrshire coast buildings when it is left in a 50 year care and maintenance phase before a five-year final site clearance programme starts in 2075.


The contractor will also need to remove the existing temporary cladding system on both reactor buildings.

Magnox Hunterston A over cladding

The cocoon will use passive ventilation to reduce corrosion-causing condensation and remove the need for maintenance activities, keeping site operatives safe and workforce needs to a minimum. The buildings will only have to be inspected every five years.

Vinci Construction clinched the first Magnox cocooning contract for the two old Bradwell reactor buildings in Essex.

Bradwell magnox

Around 900 workers were employed on the four-year project to shrink-wrap Bradwell’s old nuclear reactor buildings.

The system designed by Mott Macdonald used weathertight aluminium Kalzip cladding. The four-year shrink-wrap project to build a steel frame over the buildings and fit this with 34,000m2 of cladding was completed in September 2016.

Bid documents are available free of charge from the magnox website.

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