| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
04/10/2012 - 04/11/2012 ** EVENT NUMBERS ** |
 | Power Reactor | Event Number: 47819 | Facility: TURKEY POINT
Region: 2 State: FL
Unit: [3] [4] [ ]
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: DAVID BROOKINS
HQ OPS Officer: CHARLES TEAL | Notification Date: 04/10/2012
Notification Time: 12:42 [ET]
Event Date: 12/04/2010
Event Time: [EDT]
Last Update Date: 04/10/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
KATHLEEN O'DONOHUE (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 3 | N | N | 0 | Refueling | 0 | Refueling | | 4 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text HABITABILITY REQUIREMENT NOT MET DUE TO MAINTENANCE ON THE TSC
"Portions of the Turkey Point Technical Support Center (TSC) Heating Ventilation and Air Conditioning System (HVAC) were deenergized for maintenance for the periods of 12/4/10 to 7/13/11 and 10/10/11 to 10/28/11 (prior Event Notification 47387, made on 10/28/11, for the 10/10-28/11 period was retracted by FPL on 12/14/11).
"For the period 10/10/11 to 10/28/11, an Equipment Clearance Order (ECO) deenergized the TSC HVAC dampers in the non-emergency position while the ECO was in effect. The ECO was put into effect on 10/10/11. The ECO was released at 1630 [EDT] on 10/28/2011 and functionally tested restoring TSC ventilation recirculation capability.
"For the period 12/4/10 to 7/13/11, a similar ECO deenergized all but one of the TSC HVAC dampers in the non-emergency position while the ECO was in effect. The normal air inlet damper was stuck in the closed (emergency) position during this period. The ECO was put into effect on 12/4/10 and released on 7/13/11.
"Compensatory measures were not put into effect during either period that the TSC HVAC dampers were deenergized. Accordingly, FPL [Florida Power and Light] cannot conclude that the TSC would have remained continuously habitable for 30 days under every postulated design basis accident scenario as required by NRC standards. However, the alternate Turkey Point TSC remained available at all times."
The licensee has notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 47820 | Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [1] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: ALEX MCLELLAN
HQ OPS Officer: JOHN KNOKE | Notification Date: 04/11/2012
Notification Time: 01:18 [ET]
Event Date: 04/10/2012
Event Time: 21:48 [EDT]
Last Update Date: 04/11/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
BLAKE WELLING (R1DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Refueling | 0 | Refueling | | 2 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text SPDS AND ERDS REMOVED FROM SERVICE DUE TO PLANNED MAINTENANCE
"At 2148 EDT, on April 10, 2012 the Unit 1 & Unit 2 Safety Parameter Display System (SPDS) and Emergency Response Data System (ERDS) system was removed from service to support a planned maintenance outage on the 1A Engineered Safeguards System (ESS) Bus as part of the U1 17th Refueling and Inspection outage. The Bus Outage is expected to have a duration greater than 8 hours, but less than 72 hours. During this time, required control room hardwire indications will be available from the unaffected ESS buses. An update will be provided when SPDS/ERDS becomes available.
"Since the Unit 1 & Unit 2 SPDS/ERDS computer system will be unavailable for greater than 8 hours, this is considered a Loss of Emergency Assessment Capability and reportable under 10 CFR50.72(b)(3)(xiii)."
The licensee has notified the NRC Resident Inspector. | |