Important Note: This website contains historical data from the INSP project. As of 2004 the site is no longer maintained and certain sections do not work correctly.

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The International Nuclear Event Scale

The International Nuclear Event Scale (INES) is a tool to promptly and consistently communicate to the public the safety significance of reported events at nuclear installations. It was designed by an international group of experts convened jointly by the International Atomic Energy Agency (IAEA) and the Nuclear Energy Agency (NEA) of the Organisation for Economic Co-operation and Development.

ACCIDENT7
Major Accident
6
Serious Accident
5
Accident with off-site risk
4
Accident without significant off-site risk
INCIDENT3
Serious incident
2
Incident
1
Anomaly
DEVIATION0
Below scale
No safety signifcance


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The content was last modified on 01/26/99 .

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