| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
03/10/2015 - 03/11/2015 ** EVENT NUMBERS ** |
 | Power Reactor | Event Number: 50874 | Facility: FERMI
Region: 3 State: MI
Unit: [2] [ ] [ ]
RX Type: [2] GE-4
NRC Notified By: S. REITH
HQ OPS Officer: JEFF HERRERA | Notification Date: 03/09/2015
Notification Time: 17:38 [ET]
Event Date: 03/09/2015
Event Time: 15:21 [EDT]
Last Update Date: 03/10/2015 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(i) - PLANT S/D REQD BY TS
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
STEVE ORTH (R3DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 100 | Power Operation | 83 | Power Operation | Event Text TECH SPEC REQUIRED SHUTDOWN DUE TO SWING BUS AUTOMATIC THROWOVER FAILURE
"While performing a Technical Specification surveillance functional test of the [Low Pressure Coolant Injection] LPCI swing bus automatic throwover scheme, the throwover function failed, rendering LPCI Loop Select inoperable. Time of [the] event was 1521 [EDT]. Inoperable LPCI Loop Select results in entry into Tech Spec 3.0.3. Power reduction activities were briefed and power reduction commenced at 1615. Maintenance is currently implementing a contingency work order to correct the auto throwover failure.
"This report is made pursuant to 10 CFR 50.72(b)(2)(i), initiation of plant shutdown required by the plant's Technical Specifications; and 10 CFR 50.72(b)(3)(v)(D), an event or condition that could have prevented the fulfillment of the safety function of systems needed to mitigate the consequences of an accident."
Offsite and Emergency power remain available.
The NRC Resident Inspector was notified.
* * * UPDATE FROM KELLEY BELLENKY TO DANIEL MILLS AT 0123 EDT ON 3/10/2015 * * *
"On March 9, 2015, at approximately 1521 [EDT], while performing a functional test of the LPCI swing bus automatic throwover scheme, the throwover function failed, rendering LPCI Loop Select inoperable. Tech Spec 3.0.3 was entered and power reduction commenced at 1615 [EDT]. Power was lowered to approximately 80%. Maintenance led a troubleshooting process that found and corrected the equipment problem. At approximately 2311 [EDT], the limiting condition for operating was cleared and LPCI Loop Select was declared operable. Tech Spec 3.0.3 was exited at that time."
The licensee notified the NRC Resident Inspector. The plant has returned to 100% power.
Notified R3DO (Orth).
* * * UPDATE FROM DAVID COSIO TO CHARLES TEAL AT 1253 EDT ON 3/10/15 * * *
The LCO and LPCI operability declared was at 2211 EDT NOT 2311 EDT.
Notified R3DO (Orth). |
| Fuel Cycle Facility | Event Number: 50875 | Facility: HONEYWELL INTERNATIONAL, INC.
RX Type: URANIUM HEXAFLUORIDE PRODUCTION
Comments: UF6 CONVERSION (DRY PROCESS)
Region: 2
City: METROPOLIS State: IL
County: MASSAC
License #: SUB-526
Agreement: Y
Docket: 04003392
NRC Notified By: SEAN PATTERSON
HQ OPS Officer: CHARLES TEAL | Notification Date: 03/10/2015
Notification Time: 12:28 [ET]
Event Date: 03/09/2015
Event Time: 15:00 [CDT]
Last Update Date: 03/10/2015 | Emergency Class: NON EMERGENCY
10 CFR Section:
40.60(b)(2) - SAFETY EQUIPMENT FAILURE
| Person (Organization):
SCOTT SHAEFFER (R2DO)
CHRISTIAN ARAGUAS (NMSS)
| Event Text TEMPORARY LOSS OF POWER TO AIR MONITORING PUMPS
"The air monitoring vacuum pumps were disabled for approximately 20 minutes. Due to an unplanned power outage, the soft water supply to the air monitoring vacuum pump seals on the 2nd floor of the Feed Materials Building (FMB) was lost. These pumps provide vacuum for the stack monitoring and personnel area monitoring systems in the FMB. The secondary and tertiary water supplies to the pumps were not available when needed. This caused the vacuum pumps to be shut down until a temporary water supply could be established. A temporary water supply was reestablished to the pump seals. The pumps were restored to service at approximately 1520 CDT on 03/09/2015."
The licensee has contacted NRC Region II inspector David Hartland regarding this event. | |