Home > Electronic Reading Room > Basic References > Glossary > Event Notification (EN) system Event Notification (EN) system An internal NRC automated event tracking system used by the NRC Operations Center to track information on incoming notifications of the occurrence of significant material events that have or may affect public health and safety. Significant material events are reported to the NRC Operations Center by NRC licensees, staff of the Agreement States, other Federal agencies, and the public. | 
