Event Notification Report for March 19, 2006
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/18/2006 - 03/19/2006
EVENT NUMBERS
42429
Power Reactor
Event Number: 42429
Facility: SAINT LUCIE
Region: 2 State: FL
Unit: [] [2] []
RX Type: [1] CE,[2] CE
NRC Notified By: CALVIN WARD
HQ OPS Officer: JOHN MacKINNON
Region: 2 State: FL
Unit: [] [2] []
RX Type: [1] CE,[2] CE
NRC Notified By: CALVIN WARD
HQ OPS Officer: JOHN MacKINNON
Notification Date: 03/19/2006
Notification Time: 17:44 [ET]
Event Date: 03/19/2006
Event Time: 12:40 [EST]
Last Update Date: 03/23/2006
Notification Time: 17:44 [ET]
Event Date: 03/19/2006
Event Time: 12:40 [EST]
Last Update Date: 03/23/2006
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):
MIKE ERNSTES (R2)
MIKE ERNSTES (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 |
UNIT 2 ERDADS (EMERGENCY RESPONSE DATA ACQUISITION AND DISPLAY SYSTEM) COMPUTER DECLARED INOPERABLE.
"On 3/19/06 at approximately 1240, the U2 ERDADS computer failed and stopped providing updated plant data to the Unit 2 and Technical Support Center Operator Consoles, leaving the displays essentially static. Investigation of the failure mode is ongoing and attempts to restore the ERDADS to normal are in progress. A similar event occurred on 3/16/06, EN# 42425. Loss of the ERDADS output for greater than one hour is reportable as a major loss of assessment and communication capability under 10 CFR 50.72(b)(3)(xiii)."
The ERDADS computer has been restored but the licensee does not considered it fully operable. Vendor is coming in on 3/20/06 to try to correct the ERDADS computer problem.
The NRC Resident Inspector was notified of this by the licensee.
* * * UPDATE FROM J. HESSLING TO W. GOTT AT 1603 ON 03/23/06 * * *
ERDADS system is restored.
The licensee notified the NRC Resident Inspector.
Notified R2DO (C. Evans)
"On 3/19/06 at approximately 1240, the U2 ERDADS computer failed and stopped providing updated plant data to the Unit 2 and Technical Support Center Operator Consoles, leaving the displays essentially static. Investigation of the failure mode is ongoing and attempts to restore the ERDADS to normal are in progress. A similar event occurred on 3/16/06, EN# 42425. Loss of the ERDADS output for greater than one hour is reportable as a major loss of assessment and communication capability under 10 CFR 50.72(b)(3)(xiii)."
The ERDADS computer has been restored but the licensee does not considered it fully operable. Vendor is coming in on 3/20/06 to try to correct the ERDADS computer problem.
The NRC Resident Inspector was notified of this by the licensee.
* * * UPDATE FROM J. HESSLING TO W. GOTT AT 1603 ON 03/23/06 * * *
ERDADS system is restored.
The licensee notified the NRC Resident Inspector.
Notified R2DO (C. Evans)