New cracks have been found in one of the reactors at Hunterston B nuclear power station in North Ayrshire. Two of about 3,000 graphite bricks in the core of reactor four are affected. Plant operator, EDF Energy, said the cracking had been predicted to occur as the station aged and it would not affect the safe operation of the reactor. Deputy First Minister Nicola Sturgeon said the issue was ‘hugely concerning’ to the public and that the Scottish government was seeking reassurances. ‘The Scottish government is seeking the information we need to assure the public about safety, because safety is absolutely paramount and cannot be compromised,’ she said. The cracks were found during a routine inspection which began in August. They have appeared since the last inspection in 2011