Today's scenario is an incident involving the transportation of radioactive materials.
"It's extremely unlikely that an event like this could happen for real" said a spokesman for Magnox.
"However we can't allow ourselves to be complacent and need to be prepare for such eventualities".
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RSPCA says one budgie was put to sleep and another survived after their cage was left in a road in Swansea. A pet snake was also left.