Event Notification Report for September 08, 2004
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/07/2004 - 09/08/2004
EVENT NUMBERS
41024410254102741081
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 41024
Facility: CRYSTAL RIVER
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: LARRY MOFFATT
HQ OPS Officer: JOHN MacKINNON
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: LARRY MOFFATT
HQ OPS Officer: JOHN MacKINNON
Notification Date: 09/08/2004
Notification Time: 03:11 [ET]
Event Date: 09/08/2004
Event Time: 01:00 [EDT]
Last Update Date: 09/09/2004
Notification Time: 03:11 [ET]
Event Date: 09/08/2004
Event Time: 01:00 [EDT]
Last Update Date: 09/09/2004
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):
CAROLYN EVANS (R2)
CAROLYN EVANS (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | N | 0 | Hot Standby | 0 | Hot Standby |
POTENTIAL REACTOR COOLANT SYSTEM PRESSURE BOUNDARY LEAK LOCATED
"At 0100 on September 8, 2004, while in Mode 3 conducting a Reactor Building walkdown after an unplanned reactor trip during Tropical Storm Frances, Crystal River Unit 3 identified a potential Reactor Coolant System pressure boundary leak located on a weld associated with a pressurizer level sensing line (upstream of reactor coolant isolation valve RCV-75). The cause of the leak is not known at this time, and the leak did not have a significant effect on plant operation. The last unidentified leak rates that were completed prior to the plant shutdown were 0.10 - 0.13 gpm. This defect in the primary coolant system is unacceptable per ASME Section XI. The condition is 8-Hour reportable per 10CFR 50.72 (b)(3)(ii)(A). The plant will be cooled down to Mode 5 and additional inspections and necessary repairs implemented.
Dry boron crystal deposit are on the sensing line upstream of RCV-75 . See similar event reported by Crystal River Unit 3 on 10/04/03 (event # 40222)
The NRC Resident Inspector was notified of this event by the licensee.
* * * RETRACTED ON 9/9/04 AT 0424 EDT FROM LARRY MOFFATT TO GERRY WAIG * * *
"At 0311 on 9/8/04, Crystal River Unit 3 made an 8-Hour ENS notification in accordance with 10CFR50.72 (b)(3)(ii)(A) concerning a potential Reactor Coolant System pressure boundary leak (Event Notification # 41024). The leak was presumed to exist based on the presence of white, crystalline material deposited on the pipe. The material has been sampled and does NOT contain boron. The presumed leak site has been cleaned and visually inspected with no evidence of a defect in the weld joint or pipe. These additional inspections have demonstrated that the material deposited on the pipe does NOT constitute pressure boundary leakage, and therefore EN 41024 is retracted."
The licensee has notified the NRC resident inspector.
"At 0100 on September 8, 2004, while in Mode 3 conducting a Reactor Building walkdown after an unplanned reactor trip during Tropical Storm Frances, Crystal River Unit 3 identified a potential Reactor Coolant System pressure boundary leak located on a weld associated with a pressurizer level sensing line (upstream of reactor coolant isolation valve RCV-75). The cause of the leak is not known at this time, and the leak did not have a significant effect on plant operation. The last unidentified leak rates that were completed prior to the plant shutdown were 0.10 - 0.13 gpm. This defect in the primary coolant system is unacceptable per ASME Section XI. The condition is 8-Hour reportable per 10CFR 50.72 (b)(3)(ii)(A). The plant will be cooled down to Mode 5 and additional inspections and necessary repairs implemented.
Dry boron crystal deposit are on the sensing line upstream of RCV-75 . See similar event reported by Crystal River Unit 3 on 10/04/03 (event # 40222)
The NRC Resident Inspector was notified of this event by the licensee.
* * * RETRACTED ON 9/9/04 AT 0424 EDT FROM LARRY MOFFATT TO GERRY WAIG * * *
"At 0311 on 9/8/04, Crystal River Unit 3 made an 8-Hour ENS notification in accordance with 10CFR50.72 (b)(3)(ii)(A) concerning a potential Reactor Coolant System pressure boundary leak (Event Notification # 41024). The leak was presumed to exist based on the presence of white, crystalline material deposited on the pipe. The material has been sampled and does NOT contain boron. The presumed leak site has been cleaned and visually inspected with no evidence of a defect in the weld joint or pipe. These additional inspections have demonstrated that the material deposited on the pipe does NOT constitute pressure boundary leakage, and therefore EN 41024 is retracted."
The licensee has notified the NRC resident inspector.
Power Reactor
Event Number: 41025
Facility: ROBINSON
Region: 2 State: SC
Unit: [2] [] []
RX Type: [2] W-3-LP
NRC Notified By: RAY CRANDALL
HQ OPS Officer: GERRY WAIG
Region: 2 State: SC
Unit: [2] [] []
RX Type: [2] W-3-LP
NRC Notified By: RAY CRANDALL
HQ OPS Officer: GERRY WAIG
Notification Date: 09/08/2004
Notification Time: 08:41 [ET]
Event Date: 09/08/2004
Event Time: 05:56 [EDT]
Last Update Date: 09/08/2004
Notification Time: 08:41 [ET]
Event Date: 09/08/2004
Event Time: 05:56 [EDT]
Last Update Date: 09/08/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
CAROLYN EVANS (R2)
CAROLYN EVANS (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION - HIGH WATER FLOW FROM LAKE ROBINSON DUE TO HEAVY RAIN
"On 09/08/2004, at 0556 EDT, the H. B. Robinson site reached a condition that warranted notification of local and state government agencies of conditions with potential public safety consequences.
"Due to rain from Tropical Storm Frances, the Lake Robinson water level rose to levels that required opening of valves to increase the discharge flow from the lake. At 0556, the discharge flow exceeded 1100 cubic feet per second. Unit 1 (adjacent fossil unit) procedures require the notification of local and state government agencies when the discharge flow exceeds this rate, due to the potential for downstream flooding. Notification of local and state agencies began at 0557 EDT. No press or media releases have been made.
"Unit 2 continues to operate and there is no threat to plant equipment or operation due to this condition."
The licensee has notified the NRC Resident Inspector.
"On 09/08/2004, at 0556 EDT, the H. B. Robinson site reached a condition that warranted notification of local and state government agencies of conditions with potential public safety consequences.
"Due to rain from Tropical Storm Frances, the Lake Robinson water level rose to levels that required opening of valves to increase the discharge flow from the lake. At 0556, the discharge flow exceeded 1100 cubic feet per second. Unit 1 (adjacent fossil unit) procedures require the notification of local and state government agencies when the discharge flow exceeds this rate, due to the potential for downstream flooding. Notification of local and state agencies began at 0557 EDT. No press or media releases have been made.
"Unit 2 continues to operate and there is no threat to plant equipment or operation due to this condition."
The licensee has notified the NRC Resident Inspector.
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 41027
Facility: CRYSTAL RIVER
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: JON HUECKER
HQ OPS Officer: STEVE SANDIN
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: JON HUECKER
HQ OPS Officer: STEVE SANDIN
Notification Date: 09/08/2004
Notification Time: 18:23 [ET]
Event Date: 09/08/2004
Event Time: 14:45 [EDT]
Last Update Date: 09/30/2004
Notification Time: 18:23 [ET]
Event Date: 09/08/2004
Event Time: 14:45 [EDT]
Last Update Date: 09/30/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
CAROLYN EVANS (R2)
CAROLYN EVANS (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | N | 0 | Hot Standby | 0 | Hot Standby |
EMERGENCY FEEDWATER SYSTEM ACTUATION
"At 1445 on September 8, 2004, while in Mode 3 after an unplanned reactor trip during tropical storm Frances, Crystal River Unit 3 experienced a re-actuation of the B-Train of the Emergency Feedwater System. The Emergency Feedwater System had previously actuated during a Loss of Offsite Power experienced during Hurricane Frances and the B-Train actuation had procedurally been bypassed as part of the plant recovery. While In the process of restoring a Main Feedwater Pump to an operating condition, the signal bypassing the B-Train Emergency Feedwater actuation was momentarily removed due to unusual plant conditions present during recovery from the loss of power This resulted in the re-actuation of the B-Train of Emergency Feedwater. This condition is 8-Hour reportable per 10CFR50.72(b)(3)(iv)(B)(6). The re-actuation of the B-Train of Emergency Feedwater did not have a significant impact on plant operation and the associated equipment has been returned to a standby condition."
The licensee informed the NRC Resident Inspector.
* * * RETRACTION FROM JOHN ADDISON TO BILL HUFFMAN AT 1402 EDT ON 9/30/04 * * *
The following information was provided by the licensee via facsimile:
"At 1823 [hrs. EDT] on 9/8/04, Crystal River Unit 3 made an 8-hour ENS notification in accordance with 10CFR50.72(b)(3)(iv)(A) and 50.72(b)(3)(iv)(B)(6) concerning re-actuation of the B-train of the Emergency Feedwater System. The Emergency Feedwater System had previously actuated during a Loss of Offsite Power experienced during Hurricane Frances and the B-Train actuation had procedurally been bypassed as part of the plant recovery. While in the process of restoring a Main Feedwater Pump to an operating condition, the signal bypassing the B-Train Emergency Feedwater actuation was momentarily removed due to unusual plant conditions present during recovery from the loss of power. This allowed for a re-actuation of the B-Train of Emergency Feedwater based on a loss of Main Feedwater Pump signal. However, the two Main Feedwater Pumps had not been operating since the loss of offsite power that occurred on 9/6/04. The A-Train Emergency Feedwater System had been operating continuously since the initial actuation on the loss of offsite power and continued to operate during and after the re-actuation of the B-Train. Re-actuation of the B-Train has been determined to be an invalid actuation in accordance with the guidance of NUREG-1022, and therefore EN 41027 is retracted."
The licensee has informed the NRC resident inspector. R2DO (Lesser) notified.
"At 1445 on September 8, 2004, while in Mode 3 after an unplanned reactor trip during tropical storm Frances, Crystal River Unit 3 experienced a re-actuation of the B-Train of the Emergency Feedwater System. The Emergency Feedwater System had previously actuated during a Loss of Offsite Power experienced during Hurricane Frances and the B-Train actuation had procedurally been bypassed as part of the plant recovery. While In the process of restoring a Main Feedwater Pump to an operating condition, the signal bypassing the B-Train Emergency Feedwater actuation was momentarily removed due to unusual plant conditions present during recovery from the loss of power This resulted in the re-actuation of the B-Train of Emergency Feedwater. This condition is 8-Hour reportable per 10CFR50.72(b)(3)(iv)(B)(6). The re-actuation of the B-Train of Emergency Feedwater did not have a significant impact on plant operation and the associated equipment has been returned to a standby condition."
The licensee informed the NRC Resident Inspector.
* * * RETRACTION FROM JOHN ADDISON TO BILL HUFFMAN AT 1402 EDT ON 9/30/04 * * *
The following information was provided by the licensee via facsimile:
"At 1823 [hrs. EDT] on 9/8/04, Crystal River Unit 3 made an 8-hour ENS notification in accordance with 10CFR50.72(b)(3)(iv)(A) and 50.72(b)(3)(iv)(B)(6) concerning re-actuation of the B-train of the Emergency Feedwater System. The Emergency Feedwater System had previously actuated during a Loss of Offsite Power experienced during Hurricane Frances and the B-Train actuation had procedurally been bypassed as part of the plant recovery. While in the process of restoring a Main Feedwater Pump to an operating condition, the signal bypassing the B-Train Emergency Feedwater actuation was momentarily removed due to unusual plant conditions present during recovery from the loss of power. This allowed for a re-actuation of the B-Train of Emergency Feedwater based on a loss of Main Feedwater Pump signal. However, the two Main Feedwater Pumps had not been operating since the loss of offsite power that occurred on 9/6/04. The A-Train Emergency Feedwater System had been operating continuously since the initial actuation on the loss of offsite power and continued to operate during and after the re-actuation of the B-Train. Re-actuation of the B-Train has been determined to be an invalid actuation in accordance with the guidance of NUREG-1022, and therefore EN 41027 is retracted."
The licensee has informed the NRC resident inspector. R2DO (Lesser) notified.
Power Reactor
Event Number: 41081
Facility: CRYSTAL RIVER
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: JOHN ADDISON
HQ OPS Officer: BILL HUFFMAN
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] B&W-L-LP
NRC Notified By: JOHN ADDISON
HQ OPS Officer: BILL HUFFMAN
Notification Date: 09/30/2004
Notification Time: 14:02 [ET]
Event Date: 09/08/2004
Event Time: 14:45 [EDT]
Last Update Date: 09/30/2004
Notification Time: 14:02 [ET]
Event Date: 09/08/2004
Event Time: 14:45 [EDT]
Last Update Date: 09/30/2004
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
MARK LESSER (R2)
MARK LESSER (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
INVALID EMERGENCY FEEDWATER ACTUATION
The following information was provided by the licensee via facsimile:
"At 1445 [hrs. EDT] on September 8, 2004 Crystal River Unit 3 experienced an invalid actuation of the B-Train of the Emergency Feedwater System. This occurrence is being reported in accordance with 10CFR50.73(a)(2)(iv)(A) and 50.73(a)(2)(iv)(B)(6) using the optional process described in 50.73(a)(1). A complete actuation of the B-Train of Emergency Feedwater occurred and the train started and functioned successfully. The A-Train of Emergency Feedwater was operating at the time, and it continued to operate successfully during and after the B-Train actuation."
The licensee has notified the NRC resident inspector.
See retraction of Event #41027 for related information.
The following information was provided by the licensee via facsimile:
"At 1445 [hrs. EDT] on September 8, 2004 Crystal River Unit 3 experienced an invalid actuation of the B-Train of the Emergency Feedwater System. This occurrence is being reported in accordance with 10CFR50.73(a)(2)(iv)(A) and 50.73(a)(2)(iv)(B)(6) using the optional process described in 50.73(a)(1). A complete actuation of the B-Train of Emergency Feedwater occurred and the train started and functioned successfully. The A-Train of Emergency Feedwater was operating at the time, and it continued to operate successfully during and after the B-Train actuation."
The licensee has notified the NRC resident inspector.
See retraction of Event #41027 for related information.