Event Notification Report for November 21, 2006
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/20/2006 - 11/21/2006
Power Reactor
Event Number: 43005
Facility: SUMMER
Region: 2 State: SC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: A. CRIBB
HQ OPS Officer: BILL HUFFMAN
Region: 2 State: SC
Unit: [1] [] []
RX Type: [1] W-3-LP
NRC Notified By: A. CRIBB
HQ OPS Officer: BILL HUFFMAN
Notification Date: 11/22/2006
Notification Time: 11:48 [ET]
Event Date: 11/21/2006
Event Time: 14:00 [EST]
Last Update Date: 11/22/2006
Notification Time: 11:48 [ET]
Event Date: 11/21/2006
Event Time: 14:00 [EST]
Last Update Date: 11/22/2006
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
JAY HENSON (R2)
JAY HENSON (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Startup | 0 | Startup |
OUTSIDE OF LICENSE CONDITION FOR INSPECTION OF SERVICE WATER INTAKE STRUCTURE
"At 1400 on 11/21/06, V.C. Summer Nuclear Station (VCSNS) determined there was a failure to perform required monitoring of the Service Water intake structure and embankments within the required 5 year frequency.
"This is not a requirement of Technical Specifications, but is required by the VCSNS Operating License NPF-12, Section 2.C(5). This license condition requires that the monitoring interval not exceed 5 years.
"Monitoring was last performed 12/04/00 with no adverse consequences noted in the evaluation.
"Efforts are underway to schedule the required monitoring as soon as practicable.
"An extent-of-condition review will be performed to ensure compliance with all aspects of license condition 2.C(5)."
The licensee will notify the NRC Resident Inspector. State and local agencies will also be notified.
"At 1400 on 11/21/06, V.C. Summer Nuclear Station (VCSNS) determined there was a failure to perform required monitoring of the Service Water intake structure and embankments within the required 5 year frequency.
"This is not a requirement of Technical Specifications, but is required by the VCSNS Operating License NPF-12, Section 2.C(5). This license condition requires that the monitoring interval not exceed 5 years.
"Monitoring was last performed 12/04/00 with no adverse consequences noted in the evaluation.
"Efforts are underway to schedule the required monitoring as soon as practicable.
"An extent-of-condition review will be performed to ensure compliance with all aspects of license condition 2.C(5)."
The licensee will notify the NRC Resident Inspector. State and local agencies will also be notified.
Power Reactor
Event Number: 43002
Facility: WATTS BAR
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BEN HUNT
HQ OPS Officer: JEFF ROTTON
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BEN HUNT
HQ OPS Officer: JEFF ROTTON
Notification Date: 11/21/2006
Notification Time: 06:31 [ET]
Event Date: 11/21/2006
Event Time: 06:15 [EST]
Last Update Date: 11/21/2006
Notification Time: 06:31 [ET]
Event Date: 11/21/2006
Event Time: 06:15 [EST]
Last Update Date: 11/21/2006
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED 50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED 50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
ROBERT HAAG (R2)
JARED WERMIEL (NRR)
MELVYN LEACH (IRD)
CONSTANTOPOULOS (DHS)
MIKE LAFORTY (FEMA)
ROBERT HAAG (R2)
JARED WERMIEL (NRR)
MELVYN LEACH (IRD)
CONSTANTOPOULOS (DHS)
MIKE LAFORTY (FEMA)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown |
UNUSUAL EVENT DECLARED DUE TO UNIDENTIFIED LEAKAGE
Licensee reported 20 GPM of unidentified leakage from indication of VCT lowering level. RCS pressure is 50 psig. Source of the leak has not been identified and it is not known at this time where the RCS leakage is going. All air and liquid releases are within specifications and no protective action recommendations are needed at this time.
The licensee has notified the State and Local emergency agencies. The licensee will notify the NRC Resident Inspector.
* * * UPDATE PROVIDED BY BEN HUNT TO JEFF ROTTON AT 0714 ON 11/21/06 * * *
Unidentified leakage is now calculated to be 2 GPM based on inventory balance using charging and letdown flow and VCT level. It is believed that the indication of a leak may be from an incomplete vacuum fill of the S/G after the S/G replacement modification and when the RCS was pressurized, the remaining voids in the S/Gs were filled. There has been no visible leakage found outside of the RCS.
Notified NRREO (Wermiel), R2DO (Haag), IRD Manager (Wilson / Leach).
* * * UPDATE AT 0756 ON 11/21/2006 FROM BEN HUNT TO MARK ABRAMOVITZ * * *
The licensee terminated the Unusual Event (UE) at 0737 due to indicated RCS leakage being less than 2 GPM. The site's emergency action criteria for a UE is 10 GPM unidentified leakage. No water has been found to have leaked outside the RCS.
The licensee notified the NRC Resident Inspector.
Notified NRREO (Wermiel, Ross-Lee), R2DO (Haag), IRD Manager (Wilson, Leach), DHS SWO (Gray), FEMA (LaForty)
* * * UPDATE PROVIDED BY DOUG HOLT TO JEFF ROTTON AT 0959 ON 11/21/06 * * *
"The cause of the apparent leakage is under investigation by plant and TVA personnel. No actual leakage is believed to have transpired. Current plant conditions are stable."
The licensee notified the NRC Resident Inspector.
Notified R2DO (Haag), NRREO (Ross-Lee), IRD Manager (Wilson)
* * * UPDATE AT 1215 EST ON 11/21/06 FROM DOUG HOLT TO S. SANDIN * * *
"As a result of the declaration of a Notification of Unusual Event earlier today relative to a suspected RCS leak, a News Release is being made. The purpose of the release is to clarify to local officials and residents the nature of the suspected leak and the actions taken by school officials. The cause of the suspected leak remains under investigation."
The licensee notified the NRC Resident Inspector. Notified R2DO (Haag).
Licensee reported 20 GPM of unidentified leakage from indication of VCT lowering level. RCS pressure is 50 psig. Source of the leak has not been identified and it is not known at this time where the RCS leakage is going. All air and liquid releases are within specifications and no protective action recommendations are needed at this time.
The licensee has notified the State and Local emergency agencies. The licensee will notify the NRC Resident Inspector.
* * * UPDATE PROVIDED BY BEN HUNT TO JEFF ROTTON AT 0714 ON 11/21/06 * * *
Unidentified leakage is now calculated to be 2 GPM based on inventory balance using charging and letdown flow and VCT level. It is believed that the indication of a leak may be from an incomplete vacuum fill of the S/G after the S/G replacement modification and when the RCS was pressurized, the remaining voids in the S/Gs were filled. There has been no visible leakage found outside of the RCS.
Notified NRREO (Wermiel), R2DO (Haag), IRD Manager (Wilson / Leach).
* * * UPDATE AT 0756 ON 11/21/2006 FROM BEN HUNT TO MARK ABRAMOVITZ * * *
The licensee terminated the Unusual Event (UE) at 0737 due to indicated RCS leakage being less than 2 GPM. The site's emergency action criteria for a UE is 10 GPM unidentified leakage. No water has been found to have leaked outside the RCS.
The licensee notified the NRC Resident Inspector.
Notified NRREO (Wermiel, Ross-Lee), R2DO (Haag), IRD Manager (Wilson, Leach), DHS SWO (Gray), FEMA (LaForty)
* * * UPDATE PROVIDED BY DOUG HOLT TO JEFF ROTTON AT 0959 ON 11/21/06 * * *
"The cause of the apparent leakage is under investigation by plant and TVA personnel. No actual leakage is believed to have transpired. Current plant conditions are stable."
The licensee notified the NRC Resident Inspector.
Notified R2DO (Haag), NRREO (Ross-Lee), IRD Manager (Wilson)
* * * UPDATE AT 1215 EST ON 11/21/06 FROM DOUG HOLT TO S. SANDIN * * *
"As a result of the declaration of a Notification of Unusual Event earlier today relative to a suspected RCS leak, a News Release is being made. The purpose of the release is to clarify to local officials and residents the nature of the suspected leak and the actions taken by school officials. The cause of the suspected leak remains under investigation."
The licensee notified the NRC Resident Inspector. Notified R2DO (Haag).