11 mai 2018
C’est pendant une phase de test de relais que la perte partielle des alimentations électriques extérieures est survenue. Le réacteur était alors à l’arrêt. La mise en œuvre des procédures d’urgence a entrainé la restauration des systèmes impactés par la perte de courant. Les groupes diesels alimentent les équipements de sécurité.
Note : l’évènement est déclaré le 5 mai 2018 mais la date de sa survenue n’est pas mentionnée !
Type : BWR Mark 2 - Puissance : 3 988 MWth - Première divergence : 05 / 1987 -
Available in english only
Event Number : 53395
Facility : NINE MILE POINT
State : NY - Unit : [2] - RX Type : [2] GE-5
Event Date : Event Time : [EDT] Last Update Date : 05/11/2018
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Initial PWR : 0% Current PWR : 0%
Event Text
VALID EMERGENCY DIESEL START ON PARTIAL LOSS OF OFFSITE POWER
"At 0248 [EDT], with the plant shutdown in Mode 4, Nine Mile Point Unit 2 experienced a partial loss of off-site power during relay testing that resulted in an automatic start of the Division 2 Emergency Diesel Generator. All systems responded as expected for the event. The cause is being investigated. The station responded in accordance with appropriate Special Operating Procedures and restored impacted systems.
"This event is being reported in accordance with 10CFR50.72(b)(3)(iv)(A)"
At the time of the report, the emergency diesel generators are loaded and supplying plant safety equipment.
The licensee has notified the state of New York Emergency Management Agency and the NRC Resident Inspector.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2018/20180514en.html
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