Event Notification Report for November 06, 2011
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/05/2011 - 11/06/2011
EVENT NUMBERS
47419
Power Reactor
Event Number: 47419
Facility: THREE MILE ISLAND
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] B&W-L-LP,[2] B&W-L-LP
NRC Notified By: CLINT SIX
HQ OPS Officer: CHARLES TEAL
Region: 1 State: PA
Unit: [1] [] []
RX Type: [1] B&W-L-LP,[2] B&W-L-LP
NRC Notified By: CLINT SIX
HQ OPS Officer: CHARLES TEAL
Notification Date: 11/06/2011
Notification Time: 22:30 [ET]
Event Date: 11/06/2011
Event Time: 20:03 [EST]
Last Update Date: 11/06/2011
Notification Time: 22:30 [ET]
Event Date: 11/06/2011
Event Time: 20:03 [EST]
Last Update Date: 11/06/2011
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
NEIL PERRY (R1DO)
NEIL PERRY (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
LOSS OF SPDS AND PLANT PROCESS COMPUTER DUE TO PLANNED MAINTENANCE
"At 1203 EST on 11/06/2011, the Safety Parameter Display System (SPDS) was removed from service for planned maintenance of the Plant Process Computer. The Plant Process Computer and the SPDS function were restored at 2015 EST on 11/06/2011. This event is reportable per 10 CFR 50.72(b)(3)(xiii) since the SPDS was out of service for greater than 8 hours resulting in a major loss of emergency assessment capability."
The licensee will inform the NRC Resident Inspector.
"At 1203 EST on 11/06/2011, the Safety Parameter Display System (SPDS) was removed from service for planned maintenance of the Plant Process Computer. The Plant Process Computer and the SPDS function were restored at 2015 EST on 11/06/2011. This event is reportable per 10 CFR 50.72(b)(3)(xiii) since the SPDS was out of service for greater than 8 hours resulting in a major loss of emergency assessment capability."
The licensee will inform the NRC Resident Inspector.