Protesters break into nuclear plant to highlight security risks
More than 30 Greenpeace demonstrators entered Sizewell B, near Leiston, Suffolk shortly after 6am.
British Energy, operator of the plant, described the action as âirresponsibleâ.
One group gained access to the main control building of the installation, another gathered on its roof.
Five used climbing equipment to scale the 120ft dome, a focal point of the beachside plant, which covers the pressurised water reactor.
The protest ended at about 5pm when the climbers voluntarily left the dome after painting the word âdangerâ on the side in giant black letters.
Suffolk Police said 12 people were arrested and are being questioned at a police station.
Greenpeace campaigner Blake Lee-Harwood said: âItâs been a huge success. We came here with the intention of highlighting the issue of security at Sizewell and the appalling lack of it. British Energy are having to now face a number of questions they will have trouble answering.
âNuclear power is inherently dangerous and they are not even attempting to mitigate the risks by having proper security here.
âWe managed to walk into this flagship site with almost no equipment and can get to the top of the dome, which is the icon of this installation.â
Volunteer Rob Gueterbock, who was one of the protesters on the roof, said: âSizewell B is easier to get into than a Norwich nightclub.
âIt is a terrifying thought that if we can do this then anyone can.
âWe wouldnât do anything to interfere with the plant but if terrorists targeted a nuclear power station it would be deadly.â
It is the second time in four months that Greenpeace volunteers had breached security at Sizewell.
Last October, 140 Greenpeace campaigners breached the perimeter fence, and seven camped overnight on the roof of a cooling tower.
Mike Harrison, maintenance manager at Sizewell B, said: âIt is a totally irresponsible and criminal act which has caused damage to the insulation. At no time was there any risk to plant safety or public safety.â