| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
11/07/2003 - 11/10/2003 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 40146 | Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [ ] [ ]
RX Type: [1] GE-3
NRC Notified By: CHET DESMARAIS
HQ OPS Officer: HOWIE CROUCH | Notification Date: 09/10/2003
Notification Time: 21:02 [ET]
Event Date: 09/10/2003
Event Time: 17:46 [CDT]
Last Update Date: 11/07/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
MONTE PHILLIPS (R3)
|
| 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 A POTENTIAL BREAK IN FIRE PROTECTION WATER SYSTEM
"Potential break of Fire Water Main in Admin Bldg could cause both divisions of Safe Shutdown equipment to be inoperable by flooding the battery rooms for #11 & 12 125VDC Batteries. Vulnerable section of piping has been isolated to eliminate the flooding concern. Fire Protection compensatory actions have been established in accordance with the site Fire Protection Program."
The licensee informed the NRC resident inspector.
* * * RETRACTION FROM PFEFFER TO GOTT AT 1242 ON 11/7/03 * * *
"Monticello is retracting the event reported based on evaluations which indicate that the fire main is not considered a potential flooding source. Additional evaluations are ongoing, and issues will be entered into the station's corrective action program."
The licensee has notified the NRC Resident Inspector.
Notified R3DO (Hills) |
| Power Reactor | Event Number: 40301 | Facility: DUANE ARNOLD
Region: 3 State: IA
Unit: [1] [ ] [ ]
RX Type: [1] GE-4
NRC Notified By: TOM GORDON
HQ OPS Officer: RICH LAURA | Notification Date: 11/07/2003
Notification Time: 04:15 [ET]
Event Date: 11/07/2003
Event Time: 01:34 [CST]
Last Update Date: 11/07/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
| Person (Organization):
DAVID HILLS (R3)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | M/R | Y | 45 | Power Operation | 0 | Hot Shutdown | Event Text MANUAL SCRAM AT DUANE ARNOLD DUE TO HI COOLANT CONDUCTIVITY
"Inserted a Manual Reactor Scram due to high reactor coolant conductivity. Source of high reactor coolant conductivity is not certain at this time.
"In addition, this report is being made under 50.72(b)(3)(iv)(A), 'Any event or condition that results in valid actuation of any systems listed in paragraph (b)(3)(iv)(B) of this section' due to PCIS groups 2, 3, and 4 being received when reactor water level dropped below 170". All isolations went to completion. The reactor water level drop is normal following a scram from 45% power due to void collapse in the reactor vessel. Reactor water level was restored to normal and the PCIS group isolations were reset.
"The current plan is to cool down the plant and enter Mode 4, plant cool down is being achieved using the RCIC system until the source of the conductivity transient is identified and isolated."
The licensee indicated shortly prior to the scram a coolant chemistry transient was in progress. The limit for reactor coolant conductivity is 5 micro mhos per centimeter and the highest conductivity reading reached was 8 micro mhos per centimeter. The licensee speculates the most likely source of the high conductivity is related to an off service condensate demineralizer. There were no automatic ECCS initiations. No SRVs lifted. All control rods properly inserted.
The licensee notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 40302 | Facility: SURRY
Region: 2 State: VA
Unit: [1] [2] [ ]
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: RUSSELL DEANE
HQ OPS Officer: BILL GOTT | Notification Date: 11/07/2003
Notification Time: 14:57 [ET]
Event Date: 11/07/2003
Event Time: 08:30 [EST]
Last Update Date: 11/07/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
| Person (Organization):
STEPHEN CAHILL (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 | | 2 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | Event Text RELEASE OF CHEMICALS INTO STATE WATERS
"At 0830 hours on 11/07/03, a phosphoric acid/sodium hydroxide/potassium hydroxide diluted chemical mix overflowed from a holding tank, which resulted in a discharge of the chemicals into state waters through the plants storm drain system. This discharge was a result of two un-isolated filter vents that allowed the chemical mixture to overflow to the ground. It is estimated that approximately 70 gallons of the chemical mixture entered the plants discharge canal, which enters state waters, before it was isolated. The chemical mixture is considered non-hazardous. There were no radiological consequences associated with the discharge of the chemical mixture. Cleanup efforts are in progress.
"This event is being reported in accordance with 10CFR50.72(b)(2)(xi) due to the fact that the Virginia Department of Environmental Quality was notified at 1330 hours EDT of the discharge into state waters. The NRC resident was notified of this condition." |
| Power Reactor | Event Number: 40303 | Facility: FT CALHOUN
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: [1] CE
NRC Notified By: ERICK MATZKE
HQ OPS Officer: ERIC THOMAS | Notification Date: 11/07/2003
Notification Time: 16:09 [ET]
Event Date: 11/07/2003
Event Time: 07:45 [CST]
Last Update Date: 11/07/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
26.73 - FITNESS FOR DUTY
| Person (Organization):
MARK SHAFFER (R4)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 98 | Power Operation | 98 | Power Operation | Event Text FFD REPORT
A non-licensed supervisory individual was found to have failed a fitness for duty test because he exceeded the site's blood-alcohol level limits. The individual's access has been blocked. Contact the HOO for additional details.
The NRC Resident Inspector has been notified. |
| Power Reactor | Event Number: 40305 | Facility: SEQUOYAH
Region: 2 State: TN
Unit: [ ] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BILL HARRIS
HQ OPS Officer: JEFF ROTTON | Notification Date: 11/10/2003
Notification Time: 00:39 [ET]
Event Date: 11/09/2003
Event Time: 23:15 [EST]
Last Update Date: 11/10/2003 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
| Person (Organization):
STEPHEN CAHILL (R2)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | N | 0 | Hot Standby | 0 | Hot Standby | Event Text SEQUOYAH UNIT 2 AUXILIARY FEEDWATER ACTUATION DURING OUTAGE
"On 11/9/03 at 2315 [EST], with Unit 2 in Mode 3 in preparation for a Refueling Outage, an unanticipated ESF actuation occurred. With one Main Feedwater Pump (MFP) reset and one MFP tripped per the General Operating Procedures, Main Condenser Vacuum was being broken. Low Condenser vacuum caused the trip of the reset MFP. The signal for trip of two MFPs caused an Aux Feedwater (AFW) start. AFW was in service in manual control per procedure when the start signal was received; however, the start signal caused the Level Control Valves (LCVs) to reposition to their accident position."
The licensee notified the NRC Resident Inspector. | |