Radioactive traces detected across Europe 'came from Russia'
Ruthenium-106 particles were detected by several countries in concentrations not harmful to human health, according to the agency, but disappeared from France in mid-October.
Jean-Marc Peres, IRSN’s director, told Reuters: “Russian authorities have said they are not aware of an accident on their territory,” adding that his team had not yet contacted Kazakh authorities.
Germany’s Federal Office for Radiation Protection said an accident at a nuclear power plant could be “ruled out” due to the type of particle detected.
It said: “Ruthenium-106 is used as a radiation source in cancer therapy for the treatment of ocular tumours. Ruthenium can also occur during the reprocessing of nuclear fuel elements.”
The release of nuclear material was of a scale that, had it occurred in France, would have required the evacuation of or sheltering of people within “several kilometres” of the origin point, IRSN said.