2 avril 2013
Suite à un flash sur un transformateur de secours électrique, 4 travailleurs ont été blessés. Deux ont été évacués en ambulance et un troisième en hélicoptère. Les mises à la terre venaient pourtant d’être effectuées : l’enquête est en cours pour déterminer la cause de l’accident. Le réacteur a été maintenu à sa puissance de 88 %
Première divergence : octobre 1984 - Type : PWR-DRYAMB
Available in english only.
Facility : CALLAWAY - State : MO - Unit : [1] RX - Type : [1] W-4-LP
Event Date : 04/02/2013 - Event Time : 17:07
Emergency Class : NON EMERGENCY 10 CFR Section : 50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Initial PWR 88 % Current PWR 88 %
Event Text
OFFSITE NOTIFICATION DUE TO ELECTRICAL FAULT IN SWITCHYARD RESULTING IN PERSONNEL INJURIES
"At 1707 CDT on 4/2/13 an arc flash occurred at the ’B’ safeguards transformer (XMDV24) in the plant switchyard at Callaway. At the time of the flash, ground straps were being placed on the ’B’ safeguards transformer which had been removed from service for maintenance. The event resulted in a loss of power to areas/buildings outside the power block. There was no impact to equipment and systems in the plant.
"Four workers were injured or affected by the flash. The extent of the electrical-related injuries has not been determined. However, based on reports from the scene, all of the workers were conscious and walked away from the scene. One person was transported by helicopter and two by ambulance to a local hospital. The fourth person experienced only a minor injury.
"The hazard has been isolated and investigation of the cause is in progress.
"Notifications of this event are planned to be made to OSHA and the Missouri Public Service Commission."
The licensee notified the NRC Resident Inspector.
* * * UPDATE FROM ROB STOUGH TO VINCE KLCO AT 1955 EDT ON 4/4/2013 * * *
"Ameren Missouri issued a press release about the event described above at approximately 1507 CDT on April 4, 2013.
"The NRC Resident Inspector was notified."
Notified the R4DO (Kellar).
https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2013/20130405en.html