India, July 17 -- South Africa's nuclear regulator said Thursday that no radioactive material leaked into the environment during three recent "contamination" events inside Africa's only nuclear power station.

The incidents involved "elevated airborne radioactive contamination" inside the Koeberg Power Station, on South Africa's west coast, when there was a loss of power to ventilation units during maintenance work, the National Nuclear Regulator said, adding there was no danger to the public.

It said the three separate contamination events on June 30, July 2 and July 7 were contained inside the station. Workers inside the power station who may have been exposed were screened and recorded radioactive contamination below the radioactivity...