| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
05/21/2013 - 05/22/2013 ** EVENT NUMBERS ** |
 | Power Reactor | Event Number: 49054 | Facility: CALVERT CLIFFS
Region: 1 State: MD
Unit: [ ] [2] [ ]
RX Type: [1] CE,[2] CE
NRC Notified By: AMI CORDER
HQ OPS Officer: MARK ABRAMOVITZ | Notification Date: 05/21/2013
Notification Time: 06:20 [ET]
Event Date: 05/21/2013
Event Time: 05:33 [EDT]
Last Update Date: 05/21/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL
50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
| Person (Organization):
MEL GRAY (R1DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | M/R | Y | 100 | Power Operation | 0 | Hot Standby | Event Text MANUAL REACTOR TRIP AFTER A FEED PUMP TRIP
"Reactor trip. All safety functions met with normal heat removal. 22 SGFP [Steam Generator Feedpump] exhibited high vibrations and signs of coupling damage. Further investigation will be performed."
All control rods fully inserted on the trip. Steam Generator level is being maintained with the remaining feedpump. Decay heat is being dumped to the main condenser. Electrical power is in the normal shutdown lineup. No relief or safety valves lifted during the trip. There was no effect on Unit 1.
The licensee notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 49055 | Facility: HATCH
Region: 2 State: GA
Unit: [ ] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: STEVE BURTON
HQ OPS Officer: VINCE KLCO | Notification Date: 05/21/2013
Notification Time: 16:46 [ET]
Event Date: 03/24/2013
Event Time: 10:09 [EDT]
Last Update Date: 05/21/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
| Person (Organization):
ALAN BLAMEY (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 92 | Power Operation | 92 | Power Operation | Event Text INVALID ACTUATION OF HPCI SUCTION VALVES
"On March 24, 2013, at 1009 EDT, while personnel were entering the torus compartment to perform planned maintenance activities via permanently installed plant ladder, the sensing line to transmitter 2E41-N062D was inadvertently bumped. [This] was confirmed to be the cause for an invalid torus high water level alarm and a HPCI [High Pressure Core Injection] pump suction swap. This resulted in the HPCI suction swapping from its normal lineup, condensate storage tank (CST), to the torus as designed. Once actuated the suction swap occurred as designed. The cause was attributed to the close proximity between an individual descending/ascending the fixed ladder and the affected sensing line in conjunction with a loose tubing restraint which made the line more sensitive to being bumped. After confirming that the actuation on high torus level was invalid, HPCI suction was realigned to the CST.
"The HPCI pump suction was subsequently realigned to the CST and the loose tubing restraints were tightened."
The licensee notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 49056 | Facility: FORT CALHOUN
Region: 4 State: NE
Unit: [1] [ ] [ ]
RX Type: (1) CE
NRC Notified By: SCOTT MOECK
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 05/21/2013
Notification Time: 22:15 [ET]
Event Date: 05/21/2013
Event Time: 12:00 [CDT]
Last Update Date: 05/21/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
26.719 - FITNESS FOR DUTY
| Person (Organization):
NEIL OKEEFE (R4DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | N | 0 | Cold Shutdown | 0 | Cold Shutdown | Event Text FITNESS-FOR-DUTY REPORT INVOLVING A NON-LICENSED CONTRACT SUPERVISOR
A non-licensed, contract supervisory employee failed a random fitness-for-duty test. The employee's access to the plant has been revoked.
The licensee informed the NRC Resident Inspector. | |