| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
11/29/2010 - 11/30/2010 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 46297 | Facility: FT CALHOUN
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: [1] CE
NRC Notified By: SCOTT LINDQUIST
HQ OPS Officer: HOWIE CROUCH | Notification Date: 09/30/2010
Notification Time: 21:39 [ET]
Event Date: 09/30/2010
Event Time: 16:16 [CDT]
Last Update Date: 11/30/2010 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
THOMAS FARNHOLTZ (R4DO)
|
| 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 UNANALYZED CONDITION DUE TO POTENTIAL FLOODING VIA CONDENSATE DRAIN LINES
"USAR Section 2.7.1.2, River Stage and Flow, states flooding protection against the 1,014 foot flood in the auxiliary building is provided by removable flood barriers and sandbagging. When required, these flood barriers are installed in openings leading to safety related equipment on the 1,007 foot and 1,011 foot floor elevations.
"It has been identified that the condensation drains from the switchgear room's air handling units VA-87 and VA-88 (located in the auxiliary building), and the upper electrical penetration room's air handling units VA-85 and VA-86 (located in the auxiliary building), have no isolation valves or check valves to prevent backflow from the drain line's discharge in the turbine building basement. This means that flooding of the turbine building above approximately the 1011 foot elevation (floor level of the switchgear rooms) would result in water back-flowing via the drain lines into the switchgear rooms.
"River level is currently at the 999' 6" elevation and stable. Procedure changes are currently being developed to block the affected drain lines."
River level has never reached the 1011 foot elevation at the facility.
The licensee has notified the NRC Resident Inspector.
* * * RETRACTION FROM ERICK MATZKE TO ERIC SIMPSON AT 1307 EST ON 11/30/10 * * *
"A further evaluation of the reported flooding issue determined that the flow into the switchgear rooms would be insufficient to affect the operability of safety related equipment in the auxiliary building; therefore, the incident could not have prevented fulfillment of a safety function nor could it have caused the inoperability of independent trains of safety related equipment. The situation does not constitute an unanalyzed condition. Therefore, this event is being retracted."
The NRC Resident Inspector has been notified.
Notified R4DO (Powers). |
| Fuel Cycle Facility | Event Number: 46427 | Facility: PORTSMOUTH LEAD CASCADE
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817
Region: 2
City: PIKETON State: OH
County: PIKE
License #: SNM-7003
Agreement: Y
Docket: 70-7003
NRC Notified By: JIM MCCLEERY
HQ OPS Officer: JOE O'HARA | Notification Date: 11/18/2010
Notification Time: 16:40 [ET]
Event Date: 11/18/2010
Event Time: 13:41 [EST]
Last Update Date: 11/29/2010 | Emergency Class: NON EMERGENCY
10 CFR Section:
PART 70 APP A (c) - OFFSITE NOTIFICATION/NEWS REL
| Person (Organization):
ALAN BLAMEY (R2DO)
TIM MCCARTIN (NMSS)
JEFFERY GRANT (IRD)
| Event Text OFFSITE NOTIFICATION TO OSHA DUE TO ONSITE FATALITY
The American Centrifuge Plant reported an employee collapsed in the Centrifuge Test and Training Facility, was transported offsite to a medical facility, and subsequently died. Initial reports indicate that the employee died of natural causes.
The licensee notified Region 2 (D. Hartland) of the event.
* * * UPDATE FROM CRABTREE TO KLCO ON 11/19/2010 AT 1054 EST * * *
On 11/18/2010, at 1551 EST, the licensee commenced notification of OSHA and completed notification at 1602 EST on the same day.
Notified R2DO (Rich), NMSS-E(McCartin) and IRD (Grant).
* * * UPDATE AT 1555 EST ON 11/29/10 FROM THOMAS MARTIN TO ERIC SIMPSON * * *
The licensee called with administrative corrections (facility, docket and license numbers) to the original event notification.
Notified R2DO (Schaffer), NMSS-E(Benner) and IRD (Grant). |
| Power Reactor | Event Number: 46442 | Facility: VOGTLE
Region: 2 State: GA
Unit: [ ] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: AL SWEAT
HQ OPS Officer: PETE SNYDER | Notification Date: 11/29/2010
Notification Time: 19:20 [ET]
Event Date: 11/29/2010
Event Time: 16:12 [EST]
Last Update Date: 11/29/2010 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
SCOTT SHAEFFER (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 98 | Power Operation | 98 | Power Operation | Event Text PLANT COMPUTER MAINTENANCE OUTAGE
"At 1612 today, November 29, 2010 Unit 2 Integrated Plant Computer (IPC) was shutdown for upgrade work. This includes the SPDS [Safety Parameter Display] system which is a function of the IPC. The IPC will be returned to service in approximately two weeks and SPDS function will be restored at that time. In addition, the ERDS [Emergency Response Data System] is out of service and will be restored in the same time frame.
"Per the 50.54.Q that was prepared by our Emergency Preparedness group, notification has been made to the NRC ERDS group (Roger Chow) of the unavailability of the ERDS. While the IPC is out of service, control board indications are being utilized by the control room crew. In addition, the safety-related Plant Safety Monitoring System (PSMS) is operable. Restoration of SPDS and ERDS functions have been given the highest priority during restoration of the system. Both the NRC Ops Center and the NRC ERDS group will be notified when SPDS and ERDS capability have been restored."
The licensee notified the NRC Resident Inspector. | |