Event Notification Report for September 24, 2010
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
09/23/2010 - 09/24/2010
EVENT NUMBERS
46276
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Power Reactor
Event Number: 46276
Facility: CALVERT CLIFFS
Region: 1 State: MD
Unit: [1] [2] []
RX Type: [1] CE,[2] CE
NRC Notified By: KEVIN DOUGHERTY
HQ OPS Officer: BILL HUFFMAN
Region: 1 State: MD
Unit: [1] [2] []
RX Type: [1] CE,[2] CE
NRC Notified By: KEVIN DOUGHERTY
HQ OPS Officer: BILL HUFFMAN
Notification Date: 09/24/2010
Notification Time: 11:18 [ET]
Event Date: 09/24/2010
Event Time: 10:58 [EDT]
Last Update Date: 09/29/2010
Notification Time: 11:18 [ET]
Event Date: 09/24/2010
Event Time: 10:58 [EDT]
Last Update Date: 09/29/2010
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):
DAVID LEW (R1RA)
JACK GROBE (NRR)
JANE MARSHALL (IRD)
LAURA PEARSON (ILTA)
MIKE CHEOK (NRR)
DAVID LEW (R1RA)
JACK GROBE (NRR)
JANE MARSHALL (IRD)
LAURA PEARSON (ILTA)
MIKE CHEOK (NRR)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
UNUSUAL EVENT DECLARED BASED ON SHORT DURATION LOSS OF SECURITY EQUIPMENT
The licensee declared an Unusual Event at 1053 EDT based on a short duration loss of a security system. The basis for the Unusual Event is Emergency Action Level (EAL AU6.1.1.) for a security process issue. Compensatory issues were implemented. The equipment has been restored and proper function is being verified.
The licensee has notified the NRC Resident Inspector, State and local authorities. Contact the HOO for additional details.
* * * UPDATE AT 1323 ON 9/24/2010 FROM JAMES HUBER TO MARK ABRAMOVITZ * * *
The licensee exited the Unusual Event at 1315 EDT on 9/23/2010.
Notified the R1DO (Dentel), NRREO (Lee), IRD (Marshall), ILTAB (Pearson), DHS (Hill), FEMA (Biscoe), and 73.71 group (e-mail).
* * * UPDATE AT 1403 ON 9/29/2010 FROM JOE GIOFFRE TO ERIC SIMPSON * * *
"While performing planned maintenance on the security computer, the computer unexpectedly froze. As a result, compensatory actions were implemented and a site unusual event was declared. Further review has determined that the security event was misclassified. The security computer froze due to equipment malfunction caused by a hardware issue, not a security threat. Unusual event criteria was not met. Therefore, this notification is being retracted. This event has been entered in our corrective action program. The NRC Resident Inspector has been notified."
Notified the R1DO (Gray).
The licensee declared an Unusual Event at 1053 EDT based on a short duration loss of a security system. The basis for the Unusual Event is Emergency Action Level (EAL AU6.1.1.) for a security process issue. Compensatory issues were implemented. The equipment has been restored and proper function is being verified.
The licensee has notified the NRC Resident Inspector, State and local authorities. Contact the HOO for additional details.
* * * UPDATE AT 1323 ON 9/24/2010 FROM JAMES HUBER TO MARK ABRAMOVITZ * * *
The licensee exited the Unusual Event at 1315 EDT on 9/23/2010.
Notified the R1DO (Dentel), NRREO (Lee), IRD (Marshall), ILTAB (Pearson), DHS (Hill), FEMA (Biscoe), and 73.71 group (e-mail).
* * * UPDATE AT 1403 ON 9/29/2010 FROM JOE GIOFFRE TO ERIC SIMPSON * * *
"While performing planned maintenance on the security computer, the computer unexpectedly froze. As a result, compensatory actions were implemented and a site unusual event was declared. Further review has determined that the security event was misclassified. The security computer froze due to equipment malfunction caused by a hardware issue, not a security threat. Unusual event criteria was not met. Therefore, this notification is being retracted. This event has been entered in our corrective action program. The NRC Resident Inspector has been notified."
Notified the R1DO (Gray).