Dungeness B Life Extension (Failed)
Dungeness, Kent, UK · Operations 1983-2021 (closed early), originally planned to 2028 · £150m (investment for initial life extension to 2028)
The judgement call
Account-gated at launchDungeness B was initially granted a 10-year life extension to 2028 with a £150m investment, but ultimately closed early in 2021 due to unresolved technical issues. - The closure was attributed to a range of unique, significant, and ongoing technical challenges within the reactors that rendered it beyond repair. - This case highlights the inherent risks and uncertainties associated with extending the operational life of aging nuclear power plants, especially when facing unique technical problems. - It underscores the importance of thorough and continuous assessment of plant integrity and the willingness to make difficult decisions for safety.
Key engineering challenges
Managing aging infrastructure and unforeseen technical issues in critical components. - Addressing unique and significant technical challenges not found at other AGR sites. - Ensuring continued safe operation amidst deteriorating plant conditions. - Making the decision to close a power station early due to insurmountable technical issues.
Project facts
- Client / owner
- EDF Energy
- Lead contractor
- EDF Energy
- Lead designers
- —
- Project type
- decommissioning
- Scale
- Two Advanced Gas-cooled Reactors (AGR), ~1200 MWe total capacity
- Disciplines
- nuclear; mechanical; electrical; materials science; safety; inspection
- Standards & frameworks
- ONR
Sources: BBC News: Dungeness B: Kent's last nuclear power station closes early (https://www.bbc.com/news/uk-england-kent-57398732) - Wikipedia: Dungeness nuclear power stations (https://en.wikipedia.org/wiki/Dungeness_nuclear_power_stations) - ONR: Dungeness B (https://www.onr.org.uk/our-work/what-we-regulate/operational-power-stations/operational-sitesfacilites/dungeness-b) - NucNet: UK / Decommissioning Of Dungeness B Units To Begin Seven Years Ahead Of Schedule, Says EDF Energy (https://www.nucnet.org/news/decommissioning-of-dungeness-b-units-to-begin-seven-years-ahead-of-schedule-says-edf-energy-6-2-2021) - BBC News: Dungeness B nuclear power station given 10-year reprieve (https://www.bbc.com/news/uk-england-kent-30898444)