The graphite cores of two ageing nuclear reactors at Hunterston in North Ayrshire have begun to crumble as cracks spread.
One of the two cracked reactors at Hunterston B nuclear power station in North Ayrshire has been given permission to reopen - but only for four months.
The UK nuclear safety watchdog has boosted checks on two reactors in Scotland because of proliferating cracks in their graphite cores.
Plans to restart two cracked and ageing reactors at Hunterston in north Ayrshire have again been delayed as operators struggle to convince regulators they are safe.
New cracks have been discovered in one of Scotland’s ageing nuclear reactors, raising radiation safety fears and resulting in a prolonged shutdown.