Torness is one of 15 nuclear power stations across the UK that have been forced to shut down due to faults over the last three years - with campaigners calling for an urgent review into the reliability of nuclear energy.
Analysis for local councils revealed that 15 reactors have had 62 unplanned shut-downs since 2011, with Torness near Dunbar forced to close twice last year due to the build-up of seaweed clogging the plant’s filters.
The research - which was carried out by Edinburgh-based nuclear consultant Pete Roche - found plants hit by a range of faults including cracks and electrical, boiler and valve defects.
And now the 50-strong group of local authorities who commissioned the report are raising fears over safety and the UK’s future energy supply.
Manchester councillor Mark Hackett, who chairs the group, said: “I call upon the UK Government, the National Grid and the nuclear regulators to urgently review the safety issues around such a large number of unplanned shutdowns.
“The Government also has to prioritise alternatives over the next 12 months to ensure the unreliability of nuclear power does not lead to the lights going off around the country.”
Dungeness nuclear power station in Kent had to be shut down 21 times between 2012 and 2014.