United States Nuclear Regulatory Commission - Protecting People and the Environment
Home > NRC Library > Document Collections > Reports Associated with Events > Event Notification Reports > 2007 > September 7

Event Notification Report for September 7, 2007

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
09/06/2007 - 09/07/2007

** EVENT NUMBERS **


43615 43617 43619 43622

To top of page
Power Reactor Event Number: 43615
Facility: OCONEE
Region: 2 State: SC
Unit: [1] [2] [3]
RX Type: [1] B&W-L-LP,[2] B&W-L-LP,[3] B&W-L-LP
NRC Notified By: KIETH GREWE
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 09/06/2007
Notification Time: 02:00 [ET]
Event Date: 09/06/2007
Event Time: 00:30 [EDT]
Last Update Date: 09/06/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
MIKE ERNSTES (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 Y 100 Power Operation 100 Power Operation
3 N Y 100 Power Operation 100 Power Operation

Event Text

OIL SPILL AT KEOWEE HYDRO STATION

"Reportable oil spill (Teresstic 68, approximately 1 gallon) into the discharge of Keowee Hydro Station tailrace (Keowee River). Source of the release was the Keowee Hydro Station sump. The release is NOT continuing. Operation of units 1, 2, and 3 are unaffected.

"At request of HAZMAT teams for safety during investigation and recovery of oil, commercial operation of Keowee Hydro units is restricted. Emergency operation of Keowee Hydro Units is unaffected.

"HAZMAT teams have placed oil absorbent boom across Keowee Hydro tailrace (Keowee River) to contain/collect oil."

The licensee contacted the Coast Guard via the National Response Center (event #847958), the State Emergency Response Committee, Oconee County Center, and Pickens County Center.

The licensee notified the NRC Resident Inspector.

To top of page
Power Reactor Event Number: 43617
Facility: HARRIS
Region: 2 State: NC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP
NRC Notified By: MIKE BIERMAN
HQ OPS Officer: JOE O'HARA
Notification Date: 09/06/2007
Notification Time: 17:34 [ET]
Event Date: 09/06/2007
Event Time: 13:12 [EDT]
Last Update Date: 09/06/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
MIKE ERNSTES (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

LOSS OF COMMUNICATION TO HARNETT COUNTY DUE TO DAMAGED PHONE LINES

"At 1312 EDT, the Harris Nuclear Plant (HNP) discovered that the Harnett County Warning Point could not be contacted while doing weekly communications drill in the Main Control Room. At 1345 Harnett County Warning Point was contacted using the Bell South phone line and Harnett County stated that the phone lines had been damaged and the Harnett County Warning Point could not receive or transmit communications from approximately 1100 to 1340 hours. HNP verified that communications are presently available for the State of North Carolina and all four counties within the 10-mile emergency planning zone. Only the Selective Signaling System to Harnett County remains inoperable and under investigation for repair. This requires an 8-hour non-emergency notification per 10CFR50.72(b)(3)(xiii) due to the loss of a significant portion of the offsite notification system. The NRC Resident Inspector was informed."

The licensee has a compensatory measure of communication via an alternate phone line to Harnett County.

To top of page
Power Reactor Event Number: 43619
Facility: GRAND GULF
Region: 4 State: MS
Unit: [1] [ ] [ ]
RX Type: [1] GE-6
NRC Notified By: HARDY FARRIS
HQ OPS Officer: BILL HUFFMAN
Notification Date: 09/06/2007
Notification Time: 18:53 [ET]
Event Date: 09/06/2007
Event Time: 16:05 [CDT]
Last Update Date: 09/06/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
TROY PRUETT (R4)

Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode
1 N N 0 Cold Shutdown 0 Cold Shutdown

Event Text

EOF DECLARED NON-OPERATIONAL

"On 9/06/2007 a leak in the water supply to the Emergency Operations Facility (EOF) at Grand Gulf Nuclear Station progressed to the point that the facility is not operational. The duration of the water outage is currently unknown. Plant emergency response personnel, state, and local agencies are being informed to use the EOF backup facility."

The licensee has notified State and local authorities and the NRC Resident Inspector.

To top of page
Power Reactor Event Number: 43622
Facility: CALLAWAY
Region: 4 State: MO
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP
NRC Notified By: RICHARD THOMPSON
HQ OPS Officer: JOHN KNOKE
Notification Date: 09/07/2007
Notification Time: 00:52 [ET]
Event Date: 09/06/2007
Event Time: 23:22 [CDT]
Last Update Date: 09/07/2007
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
TROY PRUETT (R4)
JIM DYER (NRR)
PAT GWYNN (R4)
TOM ANDREWS (R4)
B. THARAKAN (R4)
FANGIE JONES (R4)
R. CANIANO (R4)
VINCE GADDY (R4)
JEFF CRUZ (IRD)
MICHELE EVANS (NRR)

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

LEAKAGE FROM REACTOR COOLANT SYSTEM >10 GPM

A relief valve (BG 8117) in the letdown system opened and released about 650 - 700 gallons of water from the reactor coolant system into the pressurizer relief tank. The rate of release from the letdown was 119 gpm. It was estimated that the pressurizer level lowered about 2-3%. The letdown system was isolated by closing the letdown orifice block isolation valve. Licensee is investigating the reason for the spurious lifting of the relief valve. Due to leakage from the reactor coolant system, the licensee entered EAL 4R. Plant is stable and operating at full power.

The licensee notified the NRC Resident Inspector.

* * * UPDATE FROM THOMPSON TO ABRAMOVITZ AT 0120 EDT ON 09/07/07 * * *

The licensee stated that the Unusual Event was exited at 0120 EDT.

The licensee notified the NRC Resident Inspector. Notified R4DO (Pruett) and NRR EO (Evans) and IRD MOC (Cruz).

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