Event Notification Report for June 29, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/28/2012 - 06/29/2012
Power Reactor
Event Number: 48059
Facility: PILGRIM
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: JOHN MACDONALD
HQ OPS Officer: JOE O'HARA
Region: 1 State: MA
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: JOHN MACDONALD
HQ OPS Officer: JOE O'HARA
Notification Date: 06/29/2012
Notification Time: 21:15 [ET]
Event Date: 06/29/2012
Event Time: 17:46 [EDT]
Last Update Date: 06/29/2012
Notification Time: 21:15 [ET]
Event Date: 06/29/2012
Event Time: 17:46 [EDT]
Last Update Date: 06/29/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
ANNE DeFRANCISCO (R1DO)
ANNE DeFRANCISCO (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
OFFSITE NOTIFICATION DUE TO AN EMPLOYEE MEDICAL EMERGENCY
"On June 29, 2012, at 1746 EDT hours and the reactor at 100% core thermal power, the following informational statement was issued by Entergy Nuclear regarding a medical emergency involving a member of the Pilgrim Station Security Department.
"This afternoon, a security employee at Pilgrim Station who appeared to be in medical distress was immediately transported to the hospital for observation and professional medical care.
"The individual was observing and monitoring union picket line activities and was not filling a position required by the Pilgrim Station Security Plan.
"The Resident Inspector staff has been informed of this press release and notification.
"This notification is being made in accordance with 10 CFR 50.72(b)(2)(xi).
"The licensee will notify the Massachusetts Emergency Management Agency."
"On June 29, 2012, at 1746 EDT hours and the reactor at 100% core thermal power, the following informational statement was issued by Entergy Nuclear regarding a medical emergency involving a member of the Pilgrim Station Security Department.
"This afternoon, a security employee at Pilgrim Station who appeared to be in medical distress was immediately transported to the hospital for observation and professional medical care.
"The individual was observing and monitoring union picket line activities and was not filling a position required by the Pilgrim Station Security Plan.
"The Resident Inspector staff has been informed of this press release and notification.
"This notification is being made in accordance with 10 CFR 50.72(b)(2)(xi).
"The licensee will notify the Massachusetts Emergency Management Agency."
Power Reactor
Event Number: 48056
Facility: WATTS BAR
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: CHARLES BROESCHE
HQ OPS Officer: JOE O'HARA
Region: 2 State: TN
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: CHARLES BROESCHE
HQ OPS Officer: JOE O'HARA
Notification Date: 06/29/2012
Notification Time: 13:04 [ET]
Event Date: 06/29/2012
Event Time: 10:28 [EDT]
Last Update Date: 11/29/2012
Notification Time: 13:04 [ET]
Event Date: 06/29/2012
Event Time: 10:28 [EDT]
Last Update Date: 11/29/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
Person (Organization):
JONATHAN BARTLEY (R2DO)
JONATHAN BARTLEY (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 |
UNANALYZED CONDITION DUE TO INCREASE IN PROBABLE MAXIMUM FLOOD LEVEL
"On June 29, 2012, TVA issued an updated calculation titled 'PMF Determination for Tennessee River Watershed' The calculation resulted in an increase in the Watts Bar Nuclear (WBN) probable maximum flood (PMF) level from Elevation 734.9 to Elevation 739.2. All flood sensitive safety related systems, structures, and components have been reviewed and been determined to remain unaffected by the revised PMF surge elevation, with the exception of the Thermal Barrier Booster Pump Motors and Essential Raw Cooling Water (ERCW) equipment required for flood mode operation located on Elevation 722 of the Intake Pumping Station (IPS). The updated PMF of Elevation 739.2 could impact the ability of the thermal barrier booster pumps and the Elevation 722 IPS ERCW equipment to perform their design accident protection function. Because of the unanalyzed condition. the potential existed for WBN to exceed its PMF design basis and adversely affect plant safety.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(ii)(B).
"Compensatory measures have been prepared to install a temporary flood protection barrier around the thermal barrier booster pumps and provide additional protection of Elevation 722 of the IPS in the event of a flood alert.
"The potential for the increased PMF level and the associated compensatory measures were previously discussed in a public meeting between TVA and the NRC on May 31, 2012 and in correspondence between TVA and the NRC dated June 13, 2012 and June 25, 2012.
"All safety related equipment is currently operable. There are no indications of conditions that might result in a flood in the near term.
"The licensee notified the NRC Resident Inspector of this condition."
* * * UPDATE FROM MICHAEL BOTTORFF TO VINCE KLCO AT 1435 EST ON 11/29/12 * * *
"Based upon continuing engineering reviews, the chilled water circulating pump motors for the Train A and B Main Control Room and 6.9kV Shutdown Board Room, including various sub-components, would be partially submerged during a Probable Maximum Flood (PMF) event. These components were not previously considered as affected by the PMF. The affected components are located on floor elevation 737.0 of the auxiliary building.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(ii)(B).
"Compensatory measures have been prepared to install temporary flood protection barrier around the chilled water circulating pump motors and provide additional protection of Elevation 722 of the IPS in the event of a flood.
"All safety related equipment is currently operable. There are no indications of conditions that might result in a flood in the near term.
"The licensee notified the NRC Resident Inspector of this condition.
"Licensee Event Report 50-390/2012-002-00 will be supplemented to include a description of the potential PMF affects on the chilled water circulating pump motors."
Notified the R2DO (Ernstes).
"On June 29, 2012, TVA issued an updated calculation titled 'PMF Determination for Tennessee River Watershed' The calculation resulted in an increase in the Watts Bar Nuclear (WBN) probable maximum flood (PMF) level from Elevation 734.9 to Elevation 739.2. All flood sensitive safety related systems, structures, and components have been reviewed and been determined to remain unaffected by the revised PMF surge elevation, with the exception of the Thermal Barrier Booster Pump Motors and Essential Raw Cooling Water (ERCW) equipment required for flood mode operation located on Elevation 722 of the Intake Pumping Station (IPS). The updated PMF of Elevation 739.2 could impact the ability of the thermal barrier booster pumps and the Elevation 722 IPS ERCW equipment to perform their design accident protection function. Because of the unanalyzed condition. the potential existed for WBN to exceed its PMF design basis and adversely affect plant safety.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(ii)(B).
"Compensatory measures have been prepared to install a temporary flood protection barrier around the thermal barrier booster pumps and provide additional protection of Elevation 722 of the IPS in the event of a flood alert.
"The potential for the increased PMF level and the associated compensatory measures were previously discussed in a public meeting between TVA and the NRC on May 31, 2012 and in correspondence between TVA and the NRC dated June 13, 2012 and June 25, 2012.
"All safety related equipment is currently operable. There are no indications of conditions that might result in a flood in the near term.
"The licensee notified the NRC Resident Inspector of this condition."
* * * UPDATE FROM MICHAEL BOTTORFF TO VINCE KLCO AT 1435 EST ON 11/29/12 * * *
"Based upon continuing engineering reviews, the chilled water circulating pump motors for the Train A and B Main Control Room and 6.9kV Shutdown Board Room, including various sub-components, would be partially submerged during a Probable Maximum Flood (PMF) event. These components were not previously considered as affected by the PMF. The affected components are located on floor elevation 737.0 of the auxiliary building.
"This notification is being made pursuant to 10 CFR 50.72(b)(3)(ii)(B).
"Compensatory measures have been prepared to install temporary flood protection barrier around the chilled water circulating pump motors and provide additional protection of Elevation 722 of the IPS in the event of a flood.
"All safety related equipment is currently operable. There are no indications of conditions that might result in a flood in the near term.
"The licensee notified the NRC Resident Inspector of this condition.
"Licensee Event Report 50-390/2012-002-00 will be supplemented to include a description of the potential PMF affects on the chilled water circulating pump motors."
Notified the R2DO (Ernstes).