4 avril 2013
Suite à une panne du système informatique, 60 % des données des systèmes de sécurité ont été perdues alors que le réacteur fonctionnait à 65 % de sa puissance. Les systèmes d’intervention en cas d’urgence restaient opérationnels par d’autres voies. La panne a persisté plus de 12 heures.
Première divergence : juin 1985 - Réacteur type BWR Mark 1
Available in english only.
Facility : FERMI - State : MI - Unit : [2]
RX Type : [2] GE-4
Event Date : 04/04/2013 - Event Time : 04:06
Emergency Class : NON EMERGENCY
10 CFR Section : 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Initial PWR 65% Current PWR 65%
Event Text
FAILURE OF THE INTEGRATED PLANT COMPUTER SYSTEM
"At 0406 [EDT] on April 4, 2013, the Fermi 2 Integrated Plant Computer System (IPCS) failed. This resulted in a loss of approximately 60 percent of data on the Safety Parameters Display System (SPDS).
"While IPCS and SPDS are not fully functional, the Emergency Plan can still be implemented if a plant emergency does occur, as assessment capabilities are available under alternate means.
"Investigation is in progress. A follow up message will be made when IPCS and SPDS are restored to fully functional status.
"This notification is being made per the requirements of 8 Hour Non-Emergency Notification 10CFR50.72(b)(3)(xiii), any event that results in a major loss of emergency assessment capability."
The licensee has notified the NRC Resident Inspector.
* * * UPDATE FROM GREG MILLER TO VINCE KLCO AT 1636 EDT ON 4/5/2013 * * *
"At 1627 [EDT] on April 4, 2013, plant personnel were able to restore full functionality of IPCS and SPDS. This restored full assessment capabilities to all onsite emergency response faculties."
The licensee notified the NRC Resident Inspector.
Notified the R3DO (Daley).
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2013/20130408en.html
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