Event Notification Report for September 03, 2013
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/02/2013 - 09/03/2013
EVENT NUMBERS
49318
Power Reactor
Event Number: 49318
Facility: LIMERICK
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: CHRIS GIAMBRONE
HQ OPS Officer: BILL HUFFMAN
Region: 1 State: PA
Unit: [] [2] []
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: CHRIS GIAMBRONE
HQ OPS Officer: BILL HUFFMAN
Notification Date: 09/03/2013
Notification Time: 14:10 [ET]
Event Date: 09/03/2013
Event Time: 06:46 [EDT]
Last Update Date: 09/03/2013
Notification Time: 14:10 [ET]
Event Date: 09/03/2013
Event Time: 06:46 [EDT]
Last Update Date: 09/03/2013
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
TODD JACKSON (R1DO)
TODD JACKSON (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
SECONDARY CONTAINMENT ACCESS AIR LOCK DOORS OPENED SIMULTANEOUSLY RESULTING IN MOMENTARY DEGRADATION
"During planned maintenance activities, station personnel simultaneously opened the inner and outer airlock doors from unit 2 reactor enclosure to the U2 reactor enclosure HVAC room, resulting in a lowering of reactor enclosure delta pressure to below the tech spec minimum required value. The airlock doors were closed within approximately 5 seconds and reactor enclosure delta pressure recovered to greater than the tech spec minimum required value within approximately 20 seconds.
"Unit 2 secondary containment was declared inoperable for the time that reactor enclosure delta pressure was below the tech spec minimum required value, and was declared operable when reactor enclosure delta pressure recovered to greater than the tech spec minimum required value. Total Limiting Condition of Operation time was approximately 20 seconds."
The licensee has notified the NRC Resident Inspector.
"During planned maintenance activities, station personnel simultaneously opened the inner and outer airlock doors from unit 2 reactor enclosure to the U2 reactor enclosure HVAC room, resulting in a lowering of reactor enclosure delta pressure to below the tech spec minimum required value. The airlock doors were closed within approximately 5 seconds and reactor enclosure delta pressure recovered to greater than the tech spec minimum required value within approximately 20 seconds.
"Unit 2 secondary containment was declared inoperable for the time that reactor enclosure delta pressure was below the tech spec minimum required value, and was declared operable when reactor enclosure delta pressure recovered to greater than the tech spec minimum required value. Total Limiting Condition of Operation time was approximately 20 seconds."
The licensee has notified the NRC Resident Inspector.