| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
11/20/2012 - 11/21/2012 ** EVENT NUMBERS ** |
 | Fuel Cycle Facility | Event Number: 48522 | Facility: PADUCAH GASEOUS DIFFUSION PLANT
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817 (301)564-3200
Region: 2
City: PADUCAH State: KY
County: McCRACKEN
License #: GDP-1
Agreement: Y
Docket: 0707001
NRC Notified By: CALVIN PITTMAN
HQ OPS Officer: VINCE KLCO | Notification Date: 11/20/2012
Notification Time: 11:02 [ET]
Event Date: 11/19/2012
Event Time: 16:25 [CST]
Last Update Date: 11/20/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
76.120(c)(2) - SAFETY EQUIPMENT FAILURE
| Person (Organization):
DAVID AYRES (R2DO)
ROBERT JOHNSON (NMSS)
| Event Text UNINTERRUPTIBLE POWER SUPPLY SAFETY EQUIPMENT FAILURE
"At 1625 CST on 11-19-12, Electrical Maintenance and Power Operations were in the process of changing a circuit breaker in the C-409 facility which supplies power to the C-409 Criticality Accident Alarm System (CAAS) Uninterruptable Power Supply (UPS). This UPS supplies power to the C-409 CAAS horns. Procedure CP2-CO-ON3031 was being utilized and the CAAS Horn Power UPS was being monitored continuously to maintain the CAAS operable. As soon as the breaker was opened it was identified that the UPS failed to throw over to battery power. At that point the breaker was re-closed and AC power restored to the CAAS horns. The time that AC power was off the CAAS horns was approximately 3-5 seconds. There were no fissile material operations in progress in the C-409 facility. This event is reportable as a 24 hour event in accordance with 10CFR76.120(c)(2)(i). This is an event in which equipment is disabled or fails to function as designed when: a.) the equipment is required by a TSR [Technical Safety Requirements] to prevent releases, prevent exposures to radiation and radioactive materials exceeding specified limits, mitigate the consequences of an accident, or restore this facility to a pre-established safe condition after an accident; b.) the equipment is required by a TSR to be available and operable and either should have been operating or should have operated on demand, and c.) no redundant equipment is available and operable to perform the required safety function.
"The NRC Senior Resident Inspector has been notified of this event." |
| Power Reactor | Event Number: 48524 | Facility: HARRIS
Region: 2 State: NC
Unit: [1] [ ] [ ]
RX Type: [1] W-3-LP
NRC Notified By: TED SMITH
HQ OPS Officer: BILL HUFFMAN | Notification Date: 11/20/2012
Notification Time: 11:59 [ET]
Event Date: 11/20/2012
Event Time: 04:34 [EST]
Last Update Date: 11/20/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
DAVID AYRES (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text LOSS OF ASSESSMENT CAPABILITY - RADIATION MONITOR DECLARED INOPERABLE
"This is a non-emergency notification. At approximately 0434 [EST] on November 20, 2012, radiation monitor RM-1WV-3547-1, Waste Processing Building Wide Range Gas Monitor (WRGM) was declared inoperable due to a loss of sample flow. This monitor is the only monitor credited in the Emergency Action Levels (EALs) for monitoring a gaseous release from the radiochemistry facility.
"This radiation monitor is necessary for accident assessment and is credited for EAL classification in the Harris Nuclear Plant Emergency Plan. Inability to classify an EAL due to an out of service monitor is considered a loss of accident assessment capability and is reportable per 10 CFR 50.72(b)(3)(xiii) as described in NUREG-1022, Revision 2. This condition does not affect the health or safety the public or the operation of the facility. An alternative method for sampling and determination of activity levels has been implemented. Actions are being taken to restore the monitor functional status.
"The NRC Resident Inspector has been notified." |
| Power Reactor | Event Number: 48525 | Facility: SUSQUEHANNA
Region: 1 State: PA
Unit: [ ] [2] [ ]
RX Type: [1] GE-4,[2] GE-4
NRC Notified By: TODD CREASY
HQ OPS Officer: BILL HUFFMAN | Notification Date: 11/20/2012
Notification Time: 12:30 [ET]
Event Date: 11/20/2012
Event Time: 06:45 [EST]
Last Update Date: 11/20/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
| Person (Organization):
JAMES DWYER (R1DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | N | 0 | Startup | 0 | Hot Shutdown | Event Text CONDITION THAT COULD HAVE PREVENTED AUTOMATIC ISOLATION OF REACTOR WATER CLEANUP SYSTEM
"Susquehanna Unit 2 discovered a condition that could have prevented the primary containment isolation valves for the reactor water cleanup (RWCU) system from automatically isolating on a high differential flow instrumentation signal.
"The RWCU system high differential flow signal was found to be indicating downscale due to an instrument failure. Both divisions of the RWCU high differential flow isolation logic utilize the same differential flow instrument loop. Thus, this single instrument failure would have prevented automatic isolation of the RWCU inboard and outboard primary containment isolation valves on a high differential flow signal.
"The other RWCU primary containment isolation instrumentation functions remained operable and the associated RWCU system primary containment isolation valves were capable of being remotely closed by the control room operators.
"At the time of discovery, Unit 2 was in Mode 2 due to an unplanned shutdown and all control rods had already been fully inserted as part of a soft shutdown sequence."
The licensee has notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 48526 | Facility: TURKEY POINT
Region: 2 State: FL
Unit: [3] [4] [ ]
RX Type: [3] W-3-LP,[4] W-3-LP
NRC Notified By: SEAN BLOOM
HQ OPS Officer: HOWIE CROUCH | Notification Date: 11/20/2012
Notification Time: 15:51 [ET]
Event Date: 11/19/2012
Event Time: 20:00 [EST]
Last Update Date: 11/20/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
26.719 - FITNESS FOR DUTY
| Person (Organization):
DAVID AYRES (R2DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 3 | N | Y | 95 | Power Operation | 95 | Power Operation | | 4 | N | N | 0 | Defueled | 0 | Defueled | Event Text NON-LICENSED CONTRACTOR SUPERVISOR TESTS POSITIVE FOR ALCOHOL
A non-licensed contract acting supervisor tested positive for alcohol on a random fitness for duty test. The contractor's access to the plant has been terminated.
The licensee has notified the NRC Resident Inspector. |
| Power Reactor | Event Number: 48527 | Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [ ] [ ]
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: FRED SWIHART
HQ OPS Officer: BILL HUFFMAN | Notification Date: 11/20/2012
Notification Time: 18:27 [ET]
Event Date: 11/20/2012
Event Time: 13:21 [CST]
Last Update Date: 11/20/2012 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(C) - POT UNCNTRL RAD REL
| Person (Organization):
BILLY DICKSON (R3DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 1 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text DRYWELL RADIATION MONITOR INOPERABLE
"At 1321 [CST] hours on November 20, 2012, the 1B Drywell Radiation Monitor exhibited degraded performance at the conclusion of surveillance testing. This monitor provides the input into one division of the primary containment isolation logic for a Group II isolation. As a result, the channel was placed in a tripped condition in accordance with Technical Specification 3.3.6.1, Condition B.
"Given both divisions are required to complete the Group II isolation logic, this condition is reportable in accordance with 10 CFR 50.72(b)(3)(v)(C) as an event or condition that could have prevented the fulfillment of a safety function.
"The station is currently taking action to troubleshoot and restore the 1B Drywell Radiation Monitor to an operable condition."
"The NRC Resident Inspector has been notified." | |