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A filter that is deployed by Deeside power station has been refurbished by Croft Engineering Services.

The Hammerhead intake filter – which weighs 650kg – was delivered to Croft’s headquarters in Warrington by Deeside Power, of Flintshire, so it could be cleaned and repaired before re-installation.

When the 2.9m-long, 1.4m-high filter reached Croft, both cylindrical ends were full of holes and severely corroded, there were numerous split or corroded welds and it was covered in barnacles.

Before starting the refurbishment, Croft engineers immediately cleaned out the seaweed, sand and silt that had accumulated inside the filter because of its back-flush construction.

They then set about the repairs, fabricating the filter in copper-nickel 90-10 and adding a small stainless-steel pipe.

Work took around 125 hours.

The newly cleaned and repaired Hammerhead was then picked up by Deeside Power and taken back to the River Dee Estuary to be re-installed by a team of diving engineers.

Croft Engineering

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