Event Notification Report for March 23, 2014
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
03/22/2014 - 03/23/2014
EVENT NUMBERS
49953
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
!!!!! THIS EVENT HAS BEEN RETRACTED !!!!!
Fuel Cycle Facility
Event Number: 49953
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: RON DOCKERY
HQ OPS Officer: JEFF ROTTON
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: RON DOCKERY
HQ OPS Officer: JEFF ROTTON
Notification Date: 03/24/2014
Notification Time: 17:00 [ET]
Event Date: 03/23/2014
Event Time: 20:50 [CDT]
Last Update Date: 03/28/2014
Notification Time: 17:00 [ET]
Event Date: 03/23/2014
Event Time: 20:50 [CDT]
Last Update Date: 03/28/2014
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):
SCOTT SHAEFFER (R2DO)
JACK GUTTMANN (NMSS)
SCOTT SHAEFFER (R2DO)
JACK GUTTMANN (NMSS)
SAFETY EQUIPMENT POTENTIAL FAILURE - HIGH PRESSURE FIRE WATER SPRINKLER SYSTEM
"At 2050 CDT, on 03-23-2014, the Plant Shift Superintendent was notified that the C-333 High Pressure Fire Water (HPFW) Sprinkler System A-16 had been inspected by Fire Services and 11 sprinkler heads had visible corrosion on them, including 4 heads adjacent to each other. The system configuration was evaluated using EN-C-822-99-047, 'Effects of Impaired Sprinkler Heads on System Operability' and determined that with these heads potentially impaired, a portion of the building would not have sufficient sprinkler coverage. The HPFW system is required to be operable according to [Technical Safety Review] TSR LCO 2.4.4.5. HPFW system A-16 was declared inoperable and TSR LCO 2.4.4.5 Required Action B was implemented for the area without sprinkler coverage.
"Based on past testing results, there is a possibility that the heads would have been able to perform their specified safety function. Once the heads are removed from the system, testing will be performed to determine the actual affect on operability. This event is reportable under 10 CFR 76.120(c)(2) as an event in which equipment required by the TSR is disabled or fails to function as designed.
"The NRC Region II (Marvin Sykes) has been notified of this event.
"PGDP Assessment and Tracking Report No. ATR-14-0324; PGDP Event Report No. PAD-2014-03; NRC Worksheet No. 49953
"Responsible Division: Operations"
TSR LCO 2.4.4.5 Action B requires an hourly fire patrol in the affected area.
* * *RETRACTION ON 3/28/14 AT 1959 EDT FROM JOE BARLETTO TO DONG PARK * * *
"Subsequent to the event, the corroded sprinkler heads were replaced with new heads and the removed heads were tested In the laboratory. Based on the test results and the operability criteria defined in EN-C-822-99-047, A-16 was capable of performing its intended safety function. The clustered heads were on a single branch line in a ceiling beam pocket. The middle head failed testing, however overlapping coverage was provided by the adjacent heads on both sides."
Notified R2DO (Sykes).
"At 2050 CDT, on 03-23-2014, the Plant Shift Superintendent was notified that the C-333 High Pressure Fire Water (HPFW) Sprinkler System A-16 had been inspected by Fire Services and 11 sprinkler heads had visible corrosion on them, including 4 heads adjacent to each other. The system configuration was evaluated using EN-C-822-99-047, 'Effects of Impaired Sprinkler Heads on System Operability' and determined that with these heads potentially impaired, a portion of the building would not have sufficient sprinkler coverage. The HPFW system is required to be operable according to [Technical Safety Review] TSR LCO 2.4.4.5. HPFW system A-16 was declared inoperable and TSR LCO 2.4.4.5 Required Action B was implemented for the area without sprinkler coverage.
"Based on past testing results, there is a possibility that the heads would have been able to perform their specified safety function. Once the heads are removed from the system, testing will be performed to determine the actual affect on operability. This event is reportable under 10 CFR 76.120(c)(2) as an event in which equipment required by the TSR is disabled or fails to function as designed.
"The NRC Region II (Marvin Sykes) has been notified of this event.
"PGDP Assessment and Tracking Report No. ATR-14-0324; PGDP Event Report No. PAD-2014-03; NRC Worksheet No. 49953
"Responsible Division: Operations"
TSR LCO 2.4.4.5 Action B requires an hourly fire patrol in the affected area.
* * *RETRACTION ON 3/28/14 AT 1959 EDT FROM JOE BARLETTO TO DONG PARK * * *
"Subsequent to the event, the corroded sprinkler heads were replaced with new heads and the removed heads were tested In the laboratory. Based on the test results and the operability criteria defined in EN-C-822-99-047, A-16 was capable of performing its intended safety function. The clustered heads were on a single branch line in a ceiling beam pocket. The middle head failed testing, however overlapping coverage was provided by the adjacent heads on both sides."
Notified R2DO (Sykes).