Event Notification Report for December 27, 2006
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/26/2006 - 12/27/2006
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
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
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
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)
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 |
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)
"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)
General Information or Other
Event Number: 43074
Rep Org: WISCONSIN RADIATION PROTECTION
Licensee: UNIV. OF WISCONSIN HOSPITAL AT MADISON
Region: 3
City: MADISON State: WI
County:
License #: 25-1323-01
Agreement: Y
Docket:
NRC Notified By: JASON HUNT
HQ OPS Officer: JOHN MacKINNON
Licensee: UNIV. OF WISCONSIN HOSPITAL AT MADISON
Region: 3
City: MADISON State: WI
County:
License #: 25-1323-01
Agreement: Y
Docket:
NRC Notified By: JASON HUNT
HQ OPS Officer: JOHN MacKINNON
Notification Date: 01/04/2007
Notification Time: 11:33 [ET]
Event Date: 12/27/2006
Event Time: 12:00 [CST]
Last Update Date: 01/04/2007
Notification Time: 11:33 [ET]
Event Date: 12/27/2006
Event Time: 12:00 [CST]
Last Update Date: 01/04/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
JOHN MADERA (R3)
GREG MORELL (NMSS)
JOHN MADERA (R3)
GREG MORELL (NMSS)
WISCONSIN AGREEMENT STATE REPORT
"Event Location: University of Wisconsin Hospital, 600 Highland Avenue, Madison, Wisconsin 53792
"The event occurred on Wednesday, December 27, 2006. A patient was to receive 4 high dose-rate brachytherapy fractions of 5 Gy each over a 7 cm length of the vaginal mucosa using a vaginal cylinder.
"About halfway through the first treatment fraction, the actual dose delivered to part of the target organ, over the inferior 3 cm of the treatment length, exceeded the prescribed dose by more than 50%, (range 1.5 - 2.37 times the prescribed dose).
"The biological dose to the patient from this event was under the prescribed dose. The subsequent 3 fractions will be modified to deliver the intended biological dose to the patient, and no adverse health effects are expected to the patient.
"Notification, by the licensee, of this event to the Department of Health and Family Services (DHFS) occurred on Thursday, December 28, 2006. DHFS will dispatch a team on Monday, January 8, 2007 to investigate this event."
Event Report ID No: WI-07-01
A "Medical Event" may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.
"Event Location: University of Wisconsin Hospital, 600 Highland Avenue, Madison, Wisconsin 53792
"The event occurred on Wednesday, December 27, 2006. A patient was to receive 4 high dose-rate brachytherapy fractions of 5 Gy each over a 7 cm length of the vaginal mucosa using a vaginal cylinder.
"About halfway through the first treatment fraction, the actual dose delivered to part of the target organ, over the inferior 3 cm of the treatment length, exceeded the prescribed dose by more than 50%, (range 1.5 - 2.37 times the prescribed dose).
"The biological dose to the patient from this event was under the prescribed dose. The subsequent 3 fractions will be modified to deliver the intended biological dose to the patient, and no adverse health effects are expected to the patient.
"Notification, by the licensee, of this event to the Department of Health and Family Services (DHFS) occurred on Thursday, December 28, 2006. DHFS will dispatch a team on Monday, January 8, 2007 to investigate this event."
Event Report ID No: WI-07-01
A "Medical Event" may indicate potential problems in a medical facility's use of radioactive materials. It does not necessarily result in harm to the patient.