51�Թ�

A spokeswoman for the NDA said the "leak in the Magnox Swarf Storage Silo is contained and does not pose a risk to the public".

The Hunterston A plant, which is already closed, comprised two 180MWe Magnox reactors.

She added that Magnox takes its responsibility seriously in decommissioning Trawsfynydd, which includes lowering the size of the reactor towers, to make sure it's safe and able to be put to future use.

Gwen Parry-Jones, who is from Anglesey, is the chief executive of Magnox, the company responsible for the decommissioning of older nuclear plants including Trawsfynydd and Wylfa.

Ms Parry-Jones was appointed as the chief executive of Magnox in March 2019 having previously been a director at Horizon Nuclear Power with responsibility over the development of Wylfa Newydd.