18 janvier 2014
Alerte sur le site suite à la destruction des circuits de sûreté du réacteur après l’explosion ou l’incendie d’un transformateur qui a entraîné lui-même la perte de l’alimentation 480 v. Les opérateurs ont dû effectuer un arrêt manuel du réacteur.
L’URGENCE A ETE DECLAREE
Type : PWR - Puissance : 2 948 MWTh - Première divergence : 01/1987
Available in english only.
Il y a eu perte des communications des circuits de commande du réacteur. Le réacteur aurait été mis en arrêt sûr et il n’y aurait pas eu de blessé, ni de dégagement de radioactivité dans l’environnement.
Event Number : 49742 Facility : HARRIS - State : NC
Unit : [1] RX Type : [1] W-3-LP
Event Date : 01/18/2014 - Event Time : 10:16
Emergency Class : ALERT 10 CFR Section : 50.72(a) (1) (i) - EMERGENCY DECLARED 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION 50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Initial PWR 100 % Current PWR 0 %
Event Text
ALERT DECLARED DUE TO FIRE IN 480V BUS
"[At 1016 EST, an] Alert [was declared] based on EAL # HA 2.1 Fire or explosion resulting in either : visible damage to any table H-1 structure or system/component required for safe shutdown of the plant, or control room indication of degraded performance of any safe shutdown structure, system, or component within any table H-1 area.
"Fire in 480V bus 1D2. Reactor was manually tripped"
480 VAC safety related transformer fire in switchgear room. Plant reduced power and tripped the reactor manually. Reactor trip was uncomplicated. Fire was extinguished when the 480 VAC bus was de-energized.
The licensee has notified the NRC Resident Inspector, the State of North Carolina, and other local authorities.
Notified DHS SWO, DOE Ops Center, FEMA Operations Center, HHS Ops Center, NICC Watch Officer, USDA Ops Center, EPA EOC, and NuclearSSA via e-mail.
* * * UPDATE FROM JOEL DUHON TO JOHN SHOEMAKER AT 1602 EST ON 1/18/14 * * *
Harris Nuclear Plant secured from the Alert at 1551 EST, on 1/18/14. The plant is stable, the fire is out, the TSC and EOF have been secured and plant recovery has been transferred to the outage control center.
There were no personnel injuries or radiological releases.
Radiation monitor RM-*1TS-3653C (Technical Support Center Radiation Monitor) is out of service.
The licensee has notified the NRC Resident Inspector.
Notified the R2DO (King), R2RA (McCree), NRR (Leeds), IRD MOC (Grant), OPA (Brenner), NRR EO (Lee)
Notified DHS SWO, DOE Ops Center, FEMA Operations Center, HHS Ops Center, NICC Watch Officer, USDA Ops Center, EPA EOC, and NuclearSSA via e-mail.
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2014/20140121en.html
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