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Event Notification Report for December 28, 2006

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
12/27/2006 - 12/28/2006

** EVENT NUMBERS **


43066

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Power Reactor Event Number: 43066
Facility: CATAWBA
Region: 2 State: SC
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: R. EDMOND
HQ OPS Officer: JOHN MacKINNON
Notification Date: 12/27/2006
Notification Time: 13:16 [ET]
Event Date: 12/27/2006
Event Time: 12:37 [EST]
Last Update Date: 12/27/2006
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
KERRY LANDIS (R2)
M J ROSS-LEE (NRR)
JEFFREY CRUZ (IRD)
STEVE YORK (DHS)
EACHES (FEMA)

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

Event Text

DECLARED UNUSUAL EVENT DUE TO UNIDENTIFIED REACTOR COOLANT LEAKAGE GREATER THAN TECH SPEC LIMIT



"Reactor Coolant level and pressure are stable in capacity of normal charging. Reactor Coolant leakage rapidly increased. Large input to Reactor Coolant Drain Tank. Leak diagnostic in progress. Secured 1B NCP [ Reactor Coolant Pump] due to low standpipe level. Leak data to be provided on follow up notification."


The NRC Resident Inspector, State, and local Officials were notified of this event by the licensee.

* * * UPDATE FROM RUSSELL EDMOND TO JOE O'HARA AT 1417 ON 12/27/06 * * *

Reactor coolant leak appears to be isolated. Operators entered containment and found the reactor coolant system "C" loop low point drain valve partially open. The operators closed the valve and isolated the reactor coolant leak.

The licensee is in EAL 4.2.U.4.

The licensee notified the NRC Resident Inspector.

R2DO (Landis), NRR EO (MJ Ross-Lee), and IRD Manager (J. Cruz)

* * * UPDATE FROM LARRY SAUNDERS TO JOE O'HARA AT 1613 ON 12/27/06 * * *

The licensee reports they have exited the unusual event at 1600 on 12/27/06 due to the leak being terminated.

The licensee notified the NRC Resident Inspector.

R2DO (Landis), NRR EO (MJ Ross-Lee), IRD Manager (J. Cruz), FEMA(Eaches), and DHS(J. Craig)

Page Last Reviewed/Updated Friday, March 30, 2012
Friday, March 30, 2012