The operators of Dounreay said there was a short loss of supply to the site near Thurso. Dounreay's incident control room was set up and operators said there was no risk to people or the environment.

Also known as the "sphere", the 41m diameter structure at Dounreay houses a nuclear reactor. SSEN had been monitoring for radiation on the Orkney-Caithness subsea cable project site. The machine ...