The International Nuclear and Radiological Event Scale (INES) is a tool for communicating the safety significance of nuclear and radiological events to the public. Member States use INES on a ...

The incident, which occurred on March 28 of that year, rated five on the International Nuclear Event Scale from 0 to 7. The accident led to 'very small' releases of radioactivity, according to the ...

and is one of only two nuclear energy accidents rated at seven—the maximum severity—on the International Nuclear Event Scale, the other being the 2011 Fukushima Daiichi nuclear disaster in Japan. The ...

which was rated a seven on the International Nuclear Event Scale. Seven is the highest rating. The reactor pools have since been cooled, but the nuclear contamination still needs to be cleaned up ...

Reporting nuclear incidents: The International Nuclear Event Scale (INES) was developed by the IAEA and OECD in 1990 to communicate and standardize the reporting of nuclear incidents or ...

Fire trucks and an emergency response helicopter stand ready during a national nuclear emergency exercise in Romania in October 2023. (Photo: C. Torres Vidal/IAEA) The IAEA invites Member States to ...

April 12, 2011: Japan raises the accident to category 7, the highest level on the International Nuclear and Radiological Event Scale, from an earlier 5, based on radiation released into the ...