The licensee received a fire alarm in an auxiliary building tunnel (Zone 146) that could not be verified within 15 minutes. An unusual event was declared (
EAL HU2) at 1500 EST. At 1505 EST the licensee fire responders were able to reach the location of the alarm and confirmed that there was no fire. The licensee has performed inspections of the area and do not yet know the cause of the fire alarm but are certain that it was not caused by an actual fire. The cause of the fire alarm is still under investigation. No offsite assistance was summoned for this event. Following restoration of fire protection system to a normal status the licensee terminated the unusual event at 1550 EST.
The licensee has notified State and local authorities and the NRC Resident Inspector. No press release is planned at this time.
Notified
DHS SWO,
FEMA,
DHS NICC and NuclearSSA via email.