Home Huge radioactive caesium detected in Helsinki
Tue, 08 Mar, 2016 01:43:31 AM
FTimes-STT Report, Mar 8
File Photo Lehtikuva.The Radiation and Nuclear Safety Authority (STUK) on Monday said it has detected an exceptionally high level of radioactive caesium-137 in Helsinki.
The detection was made last week when dust collected from the Roihupelto district of Helsinki was found to contain an exceptionally large amount of caesium.
“The last time we observed this magnitude was in the spring and summer after the Chernobyl [nuclear power plant accident],” STUK Environmental Radiation Monitoring Department Director Tarja K Ikäheimonen told the news agency STT.
The amount, however, was not enough to impact human health in a meaningful way, said STUK.
“The measurement, 4,000 microbecquerels per cubic metre of air, is about a thousand times higher than normal,” Ikäheimonen said in a statement.
According to her, the concentration in this case is about a millionth of the concentration at which people should begin protecting themselves.
The regularly detected caesium-137 is usually derived from fallout from the Chernobyl meltdown.
However, the caesium detected this time was so great that it could not have come from Chernobyl.
STUK plans to investigate into the matter.