Event Notification Report for April 02, 2001
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
04/01/2001 - 04/02/2001
Power Reactor
Event Number: 37880
Facility: COMANCHE PEAK
Region: 4 State: TX
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BEAUDIN
HQ OPS Officer: JOHN MacKINNON
Region: 4 State: TX
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BEAUDIN
HQ OPS Officer: JOHN MacKINNON
Notification Date: 04/02/2001
Notification Time: 06:53 [ET]
Event Date: 04/02/2001
Event Time: 04:02 [CST]
Last Update Date: 04/04/2001
Notification Time: 06:53 [ET]
Event Date: 04/02/2001
Event Time: 04:02 [CST]
Last Update Date: 04/04/2001
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
10 CFR Section:
50.72(b)(3)(ii)(A) - DEGRADED CONDITION
Person (Organization):
DAVE LOVELESS (R4)
DAVE LOVELESS (R4)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
GREATER THAN 1 PERCENT OF STEAM GENERATOR # 3 TUBES FOUND TO BE POTENTIALLY DEGRADED.
At approximately 0402 CT on 04/02/01, Comanche Peak discovered that more than 1% (52 out of 4772 tubes) of the inspected tubes in Steam Generator # 3 are potentially degraded. The degraded tubes are being evaluated to be removed from service. This event meets the criteria of C-3 as described in their Technical Specification section 5.5.9. Additional data is being collected and will be analyzed to assist in determining the cause of the event. An LER will be issued to further document this issue. The other three Steam Generator tubes are being inspected.
The NRC Resident Inspector will be notified of this event by the licensee.
* * * UPDATE ON 04/03/01 AT 0653 ET BY RAUL MARTINEZ TAKEN BY MACKINNON * * *
GREATER THAN 1 PERCENT OF STEAM GENERATOR # 4 TUBES FOUND TO BE POTENTIALLY DEFECTIVE.
At approximately 0500 CT on 04/03/01 Comanche Peak discovered that more than 1% (49 out of 4777 tubes) of the inspected tubes in Steam Generator # 4 are potentially defective. The defective tubes are being evaluated to be removed from service.
This event meets the criteria of C-3 as described in the their Technical Specification section 5.5.9. Additional data is being collected and will be analyzed to assist in determining the cause of the event.
The licensee is presently inspecting Steam Generators 1 and 2. R4DO (Linda Smith) notified.
The NRC Resident Inspector will be notified of this update by the licensee.
***** UPDATE AT 0015 EDT ON 04/04/01 FROM RAUL MARTINEZ TO LEIGH TROCINE *****
GREATER THAN 1% OF THE INSPECTED STEAM GENERATOR #2 TUBES WERE FOUND TO BE POTENTIALLY DEFECTIVE.
The following text is a portion of a facsimile received from the licensee:
"At approximately 2237 [CDT] on [04/03/01,] Comanche Peak Unit 1 discovered that more than 1% of the inspected tubes in steam generator #2 [were] potentially defective. The defective tubes are being evaluated to be removed from service."
"This event meets the criteria of C-3 as described in [...] Technical Specification section 5.5.9 and is being reported pursuant to the requirements of 10 CFR 50.72(b)(3)(ii)(A). Additional data is being collected and will be analyzed to assist in determining the cause of the event."
"[The total number] of inservice tubes in [steam generator] #2 = 4,476 tubes. [The total number] of tubes discovered defective at this time = 52 tubes."
The licensee plans to notify the NRC resident inspector. The NRC operations officer notified the R4DO (Linda Smith).
At approximately 0402 CT on 04/02/01, Comanche Peak discovered that more than 1% (52 out of 4772 tubes) of the inspected tubes in Steam Generator # 3 are potentially degraded. The degraded tubes are being evaluated to be removed from service. This event meets the criteria of C-3 as described in their Technical Specification section 5.5.9. Additional data is being collected and will be analyzed to assist in determining the cause of the event. An LER will be issued to further document this issue. The other three Steam Generator tubes are being inspected.
The NRC Resident Inspector will be notified of this event by the licensee.
* * * UPDATE ON 04/03/01 AT 0653 ET BY RAUL MARTINEZ TAKEN BY MACKINNON * * *
GREATER THAN 1 PERCENT OF STEAM GENERATOR # 4 TUBES FOUND TO BE POTENTIALLY DEFECTIVE.
At approximately 0500 CT on 04/03/01 Comanche Peak discovered that more than 1% (49 out of 4777 tubes) of the inspected tubes in Steam Generator # 4 are potentially defective. The defective tubes are being evaluated to be removed from service.
This event meets the criteria of C-3 as described in the their Technical Specification section 5.5.9. Additional data is being collected and will be analyzed to assist in determining the cause of the event.
The licensee is presently inspecting Steam Generators 1 and 2. R4DO (Linda Smith) notified.
The NRC Resident Inspector will be notified of this update by the licensee.
***** UPDATE AT 0015 EDT ON 04/04/01 FROM RAUL MARTINEZ TO LEIGH TROCINE *****
GREATER THAN 1% OF THE INSPECTED STEAM GENERATOR #2 TUBES WERE FOUND TO BE POTENTIALLY DEFECTIVE.
The following text is a portion of a facsimile received from the licensee:
"At approximately 2237 [CDT] on [04/03/01,] Comanche Peak Unit 1 discovered that more than 1% of the inspected tubes in steam generator #2 [were] potentially defective. The defective tubes are being evaluated to be removed from service."
"This event meets the criteria of C-3 as described in [...] Technical Specification section 5.5.9 and is being reported pursuant to the requirements of 10 CFR 50.72(b)(3)(ii)(A). Additional data is being collected and will be analyzed to assist in determining the cause of the event."
"[The total number] of inservice tubes in [steam generator] #2 = 4,476 tubes. [The total number] of tubes discovered defective at this time = 52 tubes."
The licensee plans to notify the NRC resident inspector. The NRC operations officer notified the R4DO (Linda Smith).
Power Reactor
Event Number: 37882
Facility: SAINT LUCIE
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: DAVE WILLIAMS
HQ OPS Officer: FANGIE JONES
Region: 2 State: FL
Unit: [1] [] []
RX Type: [1] CE,[2] CE
NRC Notified By: DAVE WILLIAMS
HQ OPS Officer: FANGIE JONES
Notification Date: 04/02/2001
Notification Time: 17:35 [ET]
Event Date: 04/02/2001
Event Time: 17:10 [EDT]
Last Update Date: 04/02/2001
Notification Time: 17:35 [ET]
Event Date: 04/02/2001
Event Time: 17:10 [EDT]
Last Update Date: 04/02/2001
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):
EDWARD MCALPINE (R2)
JOHN ZWOLINSKI (NRR)
RICHARD WESSMAN (IRO)
AUSTIN (FEMA)
EDWARD MCALPINE (R2)
JOHN ZWOLINSKI (NRR)
RICHARD WESSMAN (IRO)
AUSTIN (FEMA)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Hot Shutdown | 0 | Hot Shutdown |
REACTOR COOLANT SYSTEM LEAKAGE >10 GPM AS OBSERVED FROM CONTROL ROOM INDICATIONS
The licensee was in the process of placing the '1A' train of shutdown cooling system in service, when relief valve V-3483 lifted. Opening V-3481, shutdown cooling hotleg suction valve, caused pressurizer level to decrease about 4% in 5 minutes which corresponds to about 80 gpm. The leak was terminated when V-3481 was closed. The Unusual Event was declared and terminated at 1710 EDT when the leak was isolated.
The licensee intends to notify the NRC Resident Inspector and has notified the State of Florida.
(REFER TO EVENT #37889 FOR A SIMILAR EVENT.)
The licensee was in the process of placing the '1A' train of shutdown cooling system in service, when relief valve V-3483 lifted. Opening V-3481, shutdown cooling hotleg suction valve, caused pressurizer level to decrease about 4% in 5 minutes which corresponds to about 80 gpm. The leak was terminated when V-3481 was closed. The Unusual Event was declared and terminated at 1710 EDT when the leak was isolated.
The licensee intends to notify the NRC Resident Inspector and has notified the State of Florida.
(REFER TO EVENT #37889 FOR A SIMILAR EVENT.)