Three primary classrooms in the school town of Osinniki in Kemerovo Oblast, Russia have been closed due to excess concentration levels of radioactive substances.
This was reported by the Press Office of the regional Federal Bailiff Service’s Office.
“Dangerous levels of radon and thoron were found on the grounds of a comprehensive school in Osinniki," the statement said. Radiation was detected during a routine inspection by the Federal Service for the Oversight of Consumer Protection and Welfare (Rospotrebnadzor).
The local court found the school guilty of committing an administrative violation under Article 6.4 of the Code of Administrative Offenses (violation of sanitary and epidemiological requirements for the operation of residential premises and public premises, buildings, structures and transport). The bailiffs suspended the operation of three classrooms used by primary school students for 90 days.
Use of a gymnasium at a boarding school in Osinniki was suspended in November for 90 days. The gym had also recorded increased levels of radon and thoron.
Earlier in December, Russia explained the release of ruthenium-106, as a result of which a radioactive cloud rose over Europe, as caused by a satellite that burned up in the atmosphere. An interdepartmental commission investigating the cause behind the release of ruthenium-106 in the Southern Urals has called this theory a focus.