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EDF to close Dungeness B seven years early as the UK’s nuclear fleet dwindles

Image: EDF.

Image: EDF.

EDF is to close its Dungeness B nuclear power station in Kent, seven years earlier than planned as the UK’s nuclear fleet continues to shrink.

In a statement released yesterday (7 June) the French energy giant announced it would move the power station to the defueling phase with immediate effect. Dungeness B has been in an extended outage since September 2018 due to a range of “significant and ongoing technical challenges”.

The company said that while many of these challenges have been overcome, new analysis has highlighted additional station-specific risks within key components, including parts within the fuel assemblies.

“EDF has had to make a hard decision – but it is the right one,” said John Benn, station director at Dungeness B. “It gives our teams, our community and our business a clear understanding of the future.”

Construction began at Dungeness B in 1967, ahead of it coming online in 1983. It was part of a new wave of UK nuclear power stations at the time, and has a design not copied anywhere else in the UK nuclear fleet according to EDF.

The original design life of the plant was 2008, but it was extended following investment from EDF which acquired the plant in 2009, adding an additional ten years.

With Dungeness closing, just three of the UK’s nuclear fleet will still be running by 2024. It joins the likes of Hinkley Point B, Heysham-1 and Hartlepool-1, along with Hunterston B, which EDF announced would be closed in 2021 last summer, after it was taken offline in 2018 due to cracking in its graphite reactor core.

There is currently only one new nuclear plant under construction in the UK: EDF-owned Hinkley Point C. It is not set to come online till June 2026, having repeatedly been delayed as well as seeing its costs soar.

EDF will now begin defueling Dungeness B, the first stage of decommissioning a nuclear plant, and will preserve jobs in the local area.

“I’m enormously proud of everything the team at Dungeness has achieved,” added Benn. “Our low-carbon electricity has helped Britain over the past four decades and we have provided this part of Kent with vital jobs for generations. This marks the beginning of the next chapter in this station’s story. We will now plan the defueling operations, a job we expect will take several years, and one that provides ongoing opportunities for our staff and their specialist skills.”


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