Event Notification Report for August 01, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/31/2015 - 08/01/2015
Power Reactor
Event Number: 51282
Facility: CLINTON
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: KATE MATNEY
HQ OPS Officer: DANIEL MILLS
Region: 3 State: IL
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: KATE MATNEY
HQ OPS Officer: DANIEL MILLS
Notification Date: 08/01/2015
Notification Time: 15:28 [ET]
Event Date: 08/01/2015
Event Time: 12:05 [CDT]
Last Update Date: 08/01/2015
Notification Time: 15:28 [ET]
Event Date: 08/01/2015
Event Time: 12:05 [CDT]
Last Update Date: 08/01/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
CHRISTINE LIPA (R3DO)
CHRISTINE LIPA (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 99 | Power Operation | 99 | Power Operation |
INVALID SEISMIC EVENT ALARM
"At 1205 CDT on August 01, 2015, the station's Seismic Instrumentation generated a seismic event alarm that was determined to be invalid, based upon no seismic activity being felt on site and no activity detected in the area by either the National Earthquake Information Center or nearby nuclear plants. The instrumentation that actuated, recorded a value of 0.07 g on a single axis of one instrument, which is greater than the 0.02 g threshold value in the Emergency Action Level in the station's emergency procedures; however, no other instrument channel or axis indicated a valid event exceeding the 0.02 g threshold. Since the event alarm was determined to be invalid as described above, no EAL thresholds were met.
"The seismic instrumentation was declared non-functional since it would not generate a seismic event alarm during an actual event until the invalid event was reset. The alarm was reset through the alarm reset process. The seismic instrumentation alarm capability was restored and returned to service at 1250 CDT.
"This resulted in a Loss of Emergency Assessment Capability while the Seismic Instrumentation was out of service. This is a reportable condition in accordance with 10 CFR 50.72(b)(3)(xiii).
"The licensee has notified the NRC Resident Inspector."
The licensee performed a channel calibration in response to the previous Seismic Instrumentation malfunction (see EN # 51263) and plans to perform more extensive troubleshooting in response to the latest malfunction. The licensee will notify the State of Illinois plant inspector.
"At 1205 CDT on August 01, 2015, the station's Seismic Instrumentation generated a seismic event alarm that was determined to be invalid, based upon no seismic activity being felt on site and no activity detected in the area by either the National Earthquake Information Center or nearby nuclear plants. The instrumentation that actuated, recorded a value of 0.07 g on a single axis of one instrument, which is greater than the 0.02 g threshold value in the Emergency Action Level in the station's emergency procedures; however, no other instrument channel or axis indicated a valid event exceeding the 0.02 g threshold. Since the event alarm was determined to be invalid as described above, no EAL thresholds were met.
"The seismic instrumentation was declared non-functional since it would not generate a seismic event alarm during an actual event until the invalid event was reset. The alarm was reset through the alarm reset process. The seismic instrumentation alarm capability was restored and returned to service at 1250 CDT.
"This resulted in a Loss of Emergency Assessment Capability while the Seismic Instrumentation was out of service. This is a reportable condition in accordance with 10 CFR 50.72(b)(3)(xiii).
"The licensee has notified the NRC Resident Inspector."
The licensee performed a channel calibration in response to the previous Seismic Instrumentation malfunction (see EN # 51263) and plans to perform more extensive troubleshooting in response to the latest malfunction. The licensee will notify the State of Illinois plant inspector.
Fuel Cycle Facility
Event Number: 51283
Facility: HONEYWELL INTERNATIONAL, INC.
Region: 2 State: IL
Unit: [] [] []
RX Type: URANIUM HEXAFLUORIDE PRODUCTION
NRC Notified By: MARK WOLF
HQ OPS Officer: STEVE SANDIN
Region: 2 State: IL
Unit: [] [] []
RX Type: URANIUM HEXAFLUORIDE PRODUCTION
NRC Notified By: MARK WOLF
HQ OPS Officer: STEVE SANDIN
Notification Date: 08/01/2015
Notification Time: 20:09 [ET]
Event Date: 08/01/2015
Event Time: 17:55 [CDT]
Last Update Date: 08/02/2015
Notification Time: 20:09 [ET]
Event Date: 08/01/2015
Event Time: 17:55 [CDT]
Last Update Date: 08/02/2015
Emergency Class: ALERT
10 CFR Section:
40.35(f) - EMERGENCY DECLARED
10 CFR Section:
40.35(f) - EMERGENCY DECLARED
Person (Organization):
VICTOR McCREE (R2RA)
SCOTT MOORE (NMSS)
JEFFERY GRANT (IRD)
GEORGE HOPPER (R2DO)
VICTOR McCREE (R2RA)
SCOTT MOORE (NMSS)
JEFFERY GRANT (IRD)
GEORGE HOPPER (R2DO)
ALERT DECLARED DUE TO AN URANIUM HEXAFLUORIDE (UF6) RELEASE
At 1755 CDT on 08/01/15, Honeywell declared an ALERT and activated their Emergency Response Team (ERT) based on an on-going UF6 release. The source of the leak is from a tell-tale valve installed during maintenance activities for Condenser #4 in the Feed Materials Building (FMB) 6th floor. The licensee employed a mitigating strategy using CO2 inside the FMB and spray towers external to the FMB.
A Protective Action Recommendation (PAR) order was issued for local residents to shelter in-place although there was no indication of an offsite release.
At 2035 CDT the licensee reported that the leak was isolated by installing a pipe plug into the threaded tell-tale line. The PAR was lifted at 1948 CDT.
There are no worker injuries with all personnel accounted for. The licensee plans to issue a press release.
Notified other FEDS (DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, NICC Watch Officer, USDA Ops Center, EPA EOC, and FDA EOC, FEMA NWC and NuclearSSA via email)
* * * UPDATE AT 2240 EDT ON 08/01/15 FROM MARK WOLF TO REGION 2 INCIDENT RESPONSE CENTER * * *
At 2032 CDT on 08/01/15, the ALERT was downgraded to a Plant Emergency based on mitigation status and visual observation of the affected area.
* * * UPDATE AT 0032 EDT ON 08/02/15 FROM MARK WOLF TO REGION 2 INCIDENT RESPONSE CENTER * * *
The licensee will be remaining in the plant emergency mode while monitoring the vessel under vacuum conditions. The decision to replace the flange will be made by the licensee in the morning following monitoring of the vacuum conditions.
Notified the R2DO (Hopper).
Notified other FEDS (DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, NICC Watch Officer, USDA Ops Center, EPA EOC, and FDA EOC, FEMA NWC and NuclearSSA via email)
At 1755 CDT on 08/01/15, Honeywell declared an ALERT and activated their Emergency Response Team (ERT) based on an on-going UF6 release. The source of the leak is from a tell-tale valve installed during maintenance activities for Condenser #4 in the Feed Materials Building (FMB) 6th floor. The licensee employed a mitigating strategy using CO2 inside the FMB and spray towers external to the FMB.
A Protective Action Recommendation (PAR) order was issued for local residents to shelter in-place although there was no indication of an offsite release.
At 2035 CDT the licensee reported that the leak was isolated by installing a pipe plug into the threaded tell-tale line. The PAR was lifted at 1948 CDT.
There are no worker injuries with all personnel accounted for. The licensee plans to issue a press release.
Notified other FEDS (DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, NICC Watch Officer, USDA Ops Center, EPA EOC, and FDA EOC, FEMA NWC and NuclearSSA via email)
* * * UPDATE AT 2240 EDT ON 08/01/15 FROM MARK WOLF TO REGION 2 INCIDENT RESPONSE CENTER * * *
At 2032 CDT on 08/01/15, the ALERT was downgraded to a Plant Emergency based on mitigation status and visual observation of the affected area.
* * * UPDATE AT 0032 EDT ON 08/02/15 FROM MARK WOLF TO REGION 2 INCIDENT RESPONSE CENTER * * *
The licensee will be remaining in the plant emergency mode while monitoring the vessel under vacuum conditions. The decision to replace the flange will be made by the licensee in the morning following monitoring of the vacuum conditions.
Notified the R2DO (Hopper).
Notified other FEDS (DHS SWO, DOE Ops Center, FEMA Ops Center, HHS Ops Center, NICC Watch Officer, USDA Ops Center, EPA EOC, and FDA EOC, FEMA NWC and NuclearSSA via email)