Koeberg nuclear power station in South Africa to shut down for "Routine Maintenance"

SEE MORE: Residents in the area were advised that steam would issue from the unit during the shut down process, but this was no cause for alarm.

"Given the events in Japan, we want to assure the public that perfectly clean steam will issue from next to the reactor during the routine shut," spokesperson Tony Stott said.

He said that this was part of the cool down process of unit two