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- Flamanville (F)
Refurbishment of the drum filters at French nuclear power stations
In France, Hubert, in collaboration with its partner REEL International, carried out the replacement of the drum filters at the seawater intakes of the nuclear power station in Flamanville. This prestigious project highlights Hubert’s expertise in large-scale water intake systems operating under demanding conditions.
Hubert was selected to supply, install and commission vertical drum filters (known as drum screens) as part of the nuclear power station’s seawater intake system. These drum screens provide pre-filtration and fine filtration of the seawater used to cool the reactors. In the coming years, more of these drum screens will be replaced.
Bespoke drum screens as a crucial component in nuclear cooling
Location:
Flamanville
Client:
REEL
Market:
Intake systems
Year of completion:
2018
What we delivered
As part of this extensive refurbishment project, we replaced the existing drum filter, which provides protection by filtering out all unwanted particles from the incoming cooling water.
The new drum screen, weighing an impressive 165 tonnes and measuring 22 metres in diameter, ensures accurate pre-filtration of the seawater.
The drum filter was fully assembled, tested and installed on site in France as part of the power station’s existing system. Designed for uninterrupted operation for over 18 months, this installation is one of the key components ensuring the safe operation of the Flamanville reactors.
In addition to the main installation, Hubert also oversaw the refurbishment of the sprinkler system, the walkways and all the maintenance platforms. With the successful completion of the water and functional tests on site, this extraordinary project came to a spectacular conclusion after five years.
Why this solution?
- Optional fish return system
- Bespoke design
- Fine filtration achieved by using mesh with a mesh size of 2 to 10 mm.
- Suitable for varying flow rates
- Available in coated steel, stainless steel and (super)duplex
Technical details
Type
drum screen
Weight
165 tonnes
Diameter
22 m
Material
Duplex
Capacity
86,400 m³/h
“Inspection passed. Our client visited the new stainless steel hall in Sneek and gave it their full approval.”
Project in pictures
From placement to final result - a compact project with great impact.
The assembly of the enormous filter on site.
The concrete chamber in which the filter is installed.
Schematic diagram of the drum filter.
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