The plant relies on external power to keep its nuclear material cool and avoid a catastrophic accidentA local ceasefire around the Zaporizhzhia nuclear plant in southeastern Ukraine has been agreed, with the help of the International Atomic Energy Agency, to allow for necessary repairs of the backup power lines to the plant.The IAEA has confirmed that a local arrangement has been reached to help the repair teams ensure the safety of the plant, with demining activities in the area ongoing to enab...