United States Nuclear Regulatory Commission - Protecting People and the Environment
Home > NRC Library > Document Collections > Reports Associated with Events > Event Notification Reports > 2008 > September 5

Event Notification Report for September 5, 2008

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
09/04/2008 - 09/05/2008

** EVENT NUMBERS **


44454 44463

To top of page
Power Reactor Event Number: 44454
Facility: WATERFORD
Region: 4 State: LA
Unit: [3] [ ] [ ]
RX Type: [3] CE
NRC Notified By: JERRY GRUBB
HQ OPS Officer: VINCE KLCO
Notification Date: 09/01/2008
Notification Time: 00:16 [ET]
Event Date: 08/31/2008
Event Time: 23:00 [CDT]
Last Update Date: 09/04/2008
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
VIVIAN CAMPBELL (R4)
BRIAN McDERMOTT (IRD)
MIKE CHEOK (NRR)
ERIC LEEDS (NRR)
ELMO COLLINS (R4)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
3 N N 0 Hot Standby 0 Hot Standby

Event Text

NOTIFICATION OF UNUSUAL EVENT DUE TO HURRICANE WARNING ONSITE

Site declared a notification of unusual event under HU6/ EAL 7. The site is predicted to experience hurricane force winds from Gustav. As a conservative measure, the plant shutdown was completed at 2232 CDT.

The licensee has notified the NRC Resident Inspector, state and local emergency management agencies.

Notified DHS (Hill) and FEMA (Blankenship).

* * * UPDATE AT 0126 ON 9/4/2008 FROM JERRY GRUBB TO MARK ABRAMOVITZ * * *

The site has exited the Notification of Unusual Event (NUE) at 0021 CDT because 1) grid stability has been restored, 2) HU6/EAL 7 is no longer applicable (Hurricane Gustav is no longer affecting the site), and 3) the NUE for leakage greater than 25 gpm (SU7/EAL 2) is no longer applicable (entered at 0726 on 9/1/2008 and terminated at 0729 on 9/1/2008). The reactor is in mode-4 (Hot Shutdown).

Notified the R4DO (Jones), NRR (Blount), IRD (Gott), DHS (Dub), and FEMA (Casto).

To top of page
Power Reactor Event Number: 44463
Facility: BROWNS FERRY
Region: 2 State: AL
Unit: [1] [ ] [ ]
RX Type: [1] GE-4,[2] GE-4,[3] GE-4
NRC Notified By: RICKY GIVINS
HQ OPS Officer: PETE SNYDER
Notification Date: 09/04/2008
Notification Time: 05:04 [ET]
Event Date: 09/03/2008
Event Time: 23:43 [CDT]
Last Update Date: 09/04/2008
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
Person (Organization):
REBECCA NEASE (R2)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N Y 100 Power Operation 100 Power Operation

Event Text

FAILURE OF DAMPERS TO AUTO CLOSE

"Due to RPS A Circuit Protector surveillance testing, a transfer of 'A' Reactor Protection System from alternate power supply back to the 1A RPS MG-set was required. An expected group 6 containment isolation signal was received during the power transfer. Upon review of plant status to ensure systems responded as expected, it was determined that reactor ventilation zone exhaust dampers 1-DMP-64-42 and 1-DMP-64-43 (Inboard and Outboard Reactor Zone Exhaust Dampers) failed to auto-close. Isolation of these dampers is a required safety function.

"The dampers were administratively closed and deactivated in accordance with plant technical specification 3.6.4.2 action B. At the time of this report the cause for failure to auto close has not been determined."

The licensee notified the NRC Resident Inspector.

Page Last Reviewed/Updated Thursday, March 29, 2012
Thursday, March 29, 2012