Event Notification Report for January 31, 2009
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/30/2009 - 01/31/2009
EVENT NUMBERS
44820
Fuel Cycle Facility
Event Number: 44820
Facility: PADUCAH GASEOUS DIFFUSION PLANT
Region: 2 State: KY
Unit: [] [] []
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817 (301)564-3200
NRC Notified By: CALVIN PITTMAN
HQ OPS Officer: JOHN KNOKE
Region: 2 State: KY
Unit: [] [] []
RX Type: URANIUM ENRICHMENT FACILITY
Comments: 2 DEMOCRACY CENTER
6903 ROCKLEDGE DRIVE
BETHESDA, MD 20817 (301)564-3200
NRC Notified By: CALVIN PITTMAN
HQ OPS Officer: JOHN KNOKE
Notification Date: 01/31/2009
Notification Time: 13:22 [ET]
Event Date: 01/31/2009
Event Time: 01:50 [CST]
Last Update Date: 01/31/2009
Notification Time: 13:22 [ET]
Event Date: 01/31/2009
Event Time: 01:50 [CST]
Last Update Date: 01/31/2009
Emergency Class: NON EMERGENCY
10 CFR Section:
76.120(c)(2) - SAFETY EQUIPMENT FAILURE
10 CFR Section:
76.120(c)(2) - SAFETY EQUIPMENT FAILURE
Person (Organization):
GERALD MCCOY (R2)
SHEENA WHALEY (NMSS)
GERALD MCCOY (R2)
SHEENA WHALEY (NMSS)
LOSS OF POWER TO CRITICALITY ACCIDENT ALARM SYSTEM HORN
"At 0150 CST, on 01-31-09 the Plant Shift Superintendent (PSS) was notified that a Criticality Accident Alarm System (CAAS) trouble alarm had actuated for the C-409 (Stabilization Building). The PSS dispatched personnel to investigate and discovered that a circuit breaker had tripped causing a loss of power to the CAAS horn uninterruptible power supply (UPS). Further investigation revealed that the output of the UPS was off. This caused loss of CAAS audibility for C-409 and TSR LCO 2.6.4.1b was immediately entered. There were no fissile material operations in progress and all personnel in the affected area had a radio in constant communication with the Central Communications Facility satisfying the required actions of TSR 2.6.4.1 b. The circuit breaker that tripped was closed, the UPS was turned back on, and TSR 2.6.4.1b was exited at 0317 hours.
"This event is reportable as a 24 hour event in accordance with 10CFR 76.120(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 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."
PGDP Assessment and Tracking Report No. ATR-09-0203; PGDP Event Report No. PAD-2009-02
"At 0150 CST, on 01-31-09 the Plant Shift Superintendent (PSS) was notified that a Criticality Accident Alarm System (CAAS) trouble alarm had actuated for the C-409 (Stabilization Building). The PSS dispatched personnel to investigate and discovered that a circuit breaker had tripped causing a loss of power to the CAAS horn uninterruptible power supply (UPS). Further investigation revealed that the output of the UPS was off. This caused loss of CAAS audibility for C-409 and TSR LCO 2.6.4.1b was immediately entered. There were no fissile material operations in progress and all personnel in the affected area had a radio in constant communication with the Central Communications Facility satisfying the required actions of TSR 2.6.4.1 b. The circuit breaker that tripped was closed, the UPS was turned back on, and TSR 2.6.4.1b was exited at 0317 hours.
"This event is reportable as a 24 hour event in accordance with 10CFR 76.120(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 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."
PGDP Assessment and Tracking Report No. ATR-09-0203; PGDP Event Report No. PAD-2009-02