Event Notification Report for November 21, 2007
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
11/20/2007 - 11/21/2007
Power Reactor
Event Number: 43798
Facility: TURKEY POINT
Region: 2 State: FL
Unit: [] [4] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: DAVE FUNK
HQ OPS Officer: JEFF ROTTON
Region: 2 State: FL
Unit: [] [4] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: DAVE FUNK
HQ OPS Officer: JEFF ROTTON
Notification Date: 11/21/2007
Notification Time: 09:15 [ET]
Event Date: 11/21/2007
Event Time: 03:30 [EST]
Last Update Date: 12/07/2007
Notification Time: 09:15 [ET]
Event Date: 11/21/2007
Event Time: 03:30 [EST]
Last Update Date: 12/07/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
JAY HENSON (R2)
JAY HENSON (R2)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 4 | N | Y | 100 | Power Operation | 100 | Power Operation |
ERDADS COMPUTER SYSTEM FAILURE
"At 0330 on 11/21/07, Unit 4 ERDADS computer system failed and subsequently would not display any data. The plant's other Computer display system continues to show data. However, it has been determined the Emergency Response Data System (ERDS) link from Unit 4 is inoperable. Troubleshooting is in progress and a follow up notification will be made when the Unit 4 Emergency Response Data System is operable.
"The Unit 3 Emergency Response Data System remains operable."
The licensee notified the NRC Resident Inspector.
* * * UPDATE AT 1145 ON 12/7/2007 FROM EDWARD NIELSEN TO JEFF ROTTON * * *
"Repairs are complete and the Unit 4 ERDS link was available at 2321 on 12/1/2007. Subsequent testing and evaluation is complete and the ERDS link has been declared operable at 0800 on 12/7/2007."
The licensee notified the NRC Resident Inspector.
Notified the R2DO (Musser).
"At 0330 on 11/21/07, Unit 4 ERDADS computer system failed and subsequently would not display any data. The plant's other Computer display system continues to show data. However, it has been determined the Emergency Response Data System (ERDS) link from Unit 4 is inoperable. Troubleshooting is in progress and a follow up notification will be made when the Unit 4 Emergency Response Data System is operable.
"The Unit 3 Emergency Response Data System remains operable."
The licensee notified the NRC Resident Inspector.
* * * UPDATE AT 1145 ON 12/7/2007 FROM EDWARD NIELSEN TO JEFF ROTTON * * *
"Repairs are complete and the Unit 4 ERDS link was available at 2321 on 12/1/2007. Subsequent testing and evaluation is complete and the ERDS link has been declared operable at 0800 on 12/7/2007."
The licensee notified the NRC Resident Inspector.
Notified the R2DO (Musser).
Power Reactor
Event Number: 43802
Facility: CLINTON
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: DALE SHELTON
HQ OPS Officer: MARK ABRAMOVITZ
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: DALE SHELTON
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 11/21/2007
Notification Time: 18:55 [ET]
Event Date: 11/21/2007
Event Time: 14:08 [CST]
Last Update Date: 03/14/2008
Notification Time: 18:55 [ET]
Event Date: 11/21/2007
Event Time: 14:08 [CST]
Last Update Date: 03/14/2008
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
MARK RING (R3)
MARK RING (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 96 | Power Operation | 96 | Power Operation |
SAFETY PARAMETER DISPLAY SYSTEM DEGRADATION
"On 11/21/2007 at 1408 hours, the Clinton Power Station lost a portion of the Safety Parameter Display System in support of Process Computer replacement. These portions are not expected to be restored to service until Process Computer replacement activities are completed. The Plant Process Computer is expected to be fully operational by February 1, 2008.
"This event is reportable due to the major loss of emergency assessment capability per 10CFR50.72 (b)(3)(xiii) (when the SPDS has been unavailable for 8 hours or greater).
"The NRC Resident Inspector has been notified."
The alarm for secondary containment sump level has been lost to the SPDS. Compensatory measures are in effect.
* * * UPDATE ON 3/14/08 AT 1526 EDT FROM KISS TO HUFFMAN * * *
The system upgrade has been completed along with full confidence run testing. The SPDS is now considered operational and emergency assessment capability restored.
The licensee notified the NRC Resident Inspector and State authorities.
R3DO (Ring) was notified.
"On 11/21/2007 at 1408 hours, the Clinton Power Station lost a portion of the Safety Parameter Display System in support of Process Computer replacement. These portions are not expected to be restored to service until Process Computer replacement activities are completed. The Plant Process Computer is expected to be fully operational by February 1, 2008.
"This event is reportable due to the major loss of emergency assessment capability per 10CFR50.72 (b)(3)(xiii) (when the SPDS has been unavailable for 8 hours or greater).
"The NRC Resident Inspector has been notified."
The alarm for secondary containment sump level has been lost to the SPDS. Compensatory measures are in effect.
* * * UPDATE ON 3/14/08 AT 1526 EDT FROM KISS TO HUFFMAN * * *
The system upgrade has been completed along with full confidence run testing. The SPDS is now considered operational and emergency assessment capability restored.
The licensee notified the NRC Resident Inspector and State authorities.
R3DO (Ring) was notified.
Power Reactor
Event Number: 43803
Facility: TURKEY POINT
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: DEWEY BARROW
HQ OPS Officer: JOHN MacKINNON
Region: 2 State: FL
Unit: [3] [] []
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: DEWEY BARROW
HQ OPS Officer: JOHN MacKINNON
Notification Date: 11/21/2007
Notification Time: 19:00 [ET]
Event Date: 11/21/2007
Event Time: 11:15 [EST]
Last Update Date: 11/21/2007
Notification Time: 19:00 [ET]
Event Date: 11/21/2007
Event Time: 11:15 [EST]
Last Update Date: 11/21/2007
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
JAY HENSON (R2)
JAY HENSON (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 |
ERDADS LONG TERM HISTORIAN DATA STREAM WAS NOT UPDATING
"At approximately 1115 on 11/21/07 it was discovered that the Unit 3 ERDADS long term historian data stream was not updating. This impacted the ability of the ERDS link to transmit valid data. The modem was functional, but did not appear to be receiving data from the ERDADS computers. The long term historian appears to have gone offline at 1441 on 11/12/07. The probable cause of the malfunction appears to be a post installation modification to the system. The ERDS link was restored at 1130 11/21/07 and testing has confirmed it operable. No evidence of tampering has been discovered and this failure affects Unit 3 only."
The NRC Resident Inspector will be notified.
"At approximately 1115 on 11/21/07 it was discovered that the Unit 3 ERDADS long term historian data stream was not updating. This impacted the ability of the ERDS link to transmit valid data. The modem was functional, but did not appear to be receiving data from the ERDADS computers. The long term historian appears to have gone offline at 1441 on 11/12/07. The probable cause of the malfunction appears to be a post installation modification to the system. The ERDS link was restored at 1130 11/21/07 and testing has confirmed it operable. No evidence of tampering has been discovered and this failure affects Unit 3 only."
The NRC Resident Inspector will be notified.