Event Notification Report for November 10, 2001
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/09/2001 - 11/10/2001
EVENT NUMBERS
38494
Power Reactor
Event Number: 38494
Facility: SAINT LUCIE
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: STEVEN MERRILL
HQ OPS Officer: STEVE SANDIN
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: STEVEN MERRILL
HQ OPS Officer: STEVE SANDIN
Notification Date: 11/12/2001
Notification Time: 11:20 [ET]
Event Date: 11/10/2001
Event Time: 03:14 [EST]
Last Update Date: 11/12/2001
Notification Time: 11:20 [ET]
Event Date: 11/10/2001
Event Time: 03:14 [EST]
Last Update Date: 11/12/2001
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 | Hot Shutdown | 0 | Hot Shutdown |
DETERMINATION MADE THAT A PREVIOUSLY TERMINATED EVENT MET THE CRITERIA FOR EMERGENCY PLAN ENTRY
"This report is being made due to the determination that a previously terminated event had met the criteria for emergency plan entry.
"At approximately 03:14 on 11/10/01, St. Lucie Unit 1 was operating in Mode 4. The Shutdown Cooling System had been secured for approximately 15 minutes when a realignment sequence was initiated to place the system back in service. During the performance of this evolution, thermal relief valve V3431 lifted and did not immediately reseat. The event was terminated when the 1B Low Pressure Safety Injection Pump was secured and the relief valve reseated.
"Initial assessment of the leakage rate, while the relief valve was open, concluded that the flow rate was less than 10 gpm and therefore did not meet the threshold for Emergency Plan entry. A Condition Report was initiated to perform a more in depth analysis of the event.
"Subsequent, detailed analysis of the event has determined that the flow rate from the relief valve did exceed the 10 gpm criteria for Emergency Plan implementation."
The licensee notified the NRC Resident Inspector and intends to notify the State and Local Authorities.
"This report is being made due to the determination that a previously terminated event had met the criteria for emergency plan entry.
"At approximately 03:14 on 11/10/01, St. Lucie Unit 1 was operating in Mode 4. The Shutdown Cooling System had been secured for approximately 15 minutes when a realignment sequence was initiated to place the system back in service. During the performance of this evolution, thermal relief valve V3431 lifted and did not immediately reseat. The event was terminated when the 1B Low Pressure Safety Injection Pump was secured and the relief valve reseated.
"Initial assessment of the leakage rate, while the relief valve was open, concluded that the flow rate was less than 10 gpm and therefore did not meet the threshold for Emergency Plan entry. A Condition Report was initiated to perform a more in depth analysis of the event.
"Subsequent, detailed analysis of the event has determined that the flow rate from the relief valve did exceed the 10 gpm criteria for Emergency Plan implementation."
The licensee notified the NRC Resident Inspector and intends to notify the State and Local Authorities.