Event Notification Report for May 02, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
05/01/2015 - 05/02/2015
Power Reactor
Event Number: 51033
Facility: PALISADES
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: JC RANEY
HQ OPS Officer: DANIEL MILLS
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] CE
NRC Notified By: JC RANEY
HQ OPS Officer: DANIEL MILLS
Notification Date: 05/02/2015
Notification Time: 12:58 [ET]
Event Date: 05/02/2015
Event Time: 12:23 [EDT]
Last Update Date: 05/02/2015
Notification Time: 12:58 [ET]
Event Date: 05/02/2015
Event Time: 12:23 [EDT]
Last Update Date: 05/02/2015
Emergency Class: UNUSUAL EVENT
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
10 CFR Section:
50.72(a) (1) (i) - EMERGENCY DECLARED
Person (Organization):
ROBERT ORLIKOWSKI (R3DO)
BERNARD STAPLETON (IRD)
SCOTT MORRIS (NRR)
BILL DEAN (NRR)
CINDY PEDERSON (R3RA)
ROBERT ORLIKOWSKI (R3DO)
BERNARD STAPLETON (IRD)
SCOTT MORRIS (NRR)
BILL DEAN (NRR)
CINDY PEDERSON (R3RA)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
UNUSUAL EVENT DECLARED DUE TO SEISMIC ACTIVITY FELT ON SITE
At 1241 EDT, Operations staff at Palisades declared an Unusual Event under EAL HU1.1 due to seismic activity felt on site. No seismic alarms were initiated. No plant equipment was affected. The epicenter of the 4.2 magnitude earthquake was located south of Galesburg, MI. Palisades continues to operate at 100% power.
The licensee has notified the NRC Resident Inspector.
* * * UPDATE FROM JC RANEY TO DANIEL MILLS AT 1601 EDT ON 5/2/15 * * *
The licensee terminated the Unusual Event at 1541 EDT on 5/2/15.
The licensee has notified the NRC Resident Inspector and the state and local government.
Notified R3DO (Orlikowski), IRD MOC (Stapleton), NRR EO (Morris), NRR ET (Dean), and R3RA (Pederson).
Notified other Federal Agencies (DHS SWO, FEMA Ops, FEMA NWC, NICC Watch Officer and NuclearSSA).
At 1241 EDT, Operations staff at Palisades declared an Unusual Event under EAL HU1.1 due to seismic activity felt on site. No seismic alarms were initiated. No plant equipment was affected. The epicenter of the 4.2 magnitude earthquake was located south of Galesburg, MI. Palisades continues to operate at 100% power.
The licensee has notified the NRC Resident Inspector.
* * * UPDATE FROM JC RANEY TO DANIEL MILLS AT 1601 EDT ON 5/2/15 * * *
The licensee terminated the Unusual Event at 1541 EDT on 5/2/15.
The licensee has notified the NRC Resident Inspector and the state and local government.
Notified R3DO (Orlikowski), IRD MOC (Stapleton), NRR EO (Morris), NRR ET (Dean), and R3RA (Pederson).
Notified other Federal Agencies (DHS SWO, FEMA Ops, FEMA NWC, NICC Watch Officer and NuclearSSA).
Power Reactor
Event Number: 51034
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: LT. DANA ANTON
HQ OPS Officer: HOWIE CROUCH
Region: 3 State: MN
Unit: [1] [] []
RX Type: [1] GE-3
NRC Notified By: LT. DANA ANTON
HQ OPS Officer: HOWIE CROUCH
Notification Date: 05/02/2015
Notification Time: 20:57 [ET]
Event Date: 05/02/2015
Event Time: 12:47 [CDT]
Last Update Date: 05/02/2015
Notification Time: 20:57 [ET]
Event Date: 05/02/2015
Event Time: 12:47 [CDT]
Last Update Date: 05/02/2015
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(B) - POT RHR INOP
10 CFR Section:
50.72(b)(3)(v)(B) - POT RHR INOP
Person (Organization):
ROBERT ORLIKOWSKI (R3DO)
ROBERT ORLIKOWSKI (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | N | 0 | Refueling | 0 | Refueling |
LOSS OF SHUTDOWN COOLING DUE TO LOSS OF 4KV BUS
"On 5/2/2015 at 1247 CDT, while the plant was in MODE 5 for a refueling outage with the vessel cavity flooded, during logic testing of the non-credited essential 4kV bus, MNGP [Monticello Nuclear Generating Plant] experienced a human performance error that caused a loss of the 4kV bus and essential load center. Loss of the load center de-energized valve position indication on one shutdown cooling isolation valve. This tripped the shutdown cooling pump on a pump suction interlock, resulting in the loss of shutdown cooling. This is being reported under 10 CFR 50.72(b)(3)(v)(B) as an event or condition that could have prevented the fulfillment of the safety function of structures or systems that are needed to remove residual heat.
"Following the event, the safety related load centers were cross-tied to allow restoration of shutdown cooling. Shutdown cooling was restored at 1603. While shutdown cooling was out of service, vessel water temperature rose approximately 10øF to 91.1øF, which is within the allowed temperature band.
"This event did not result in the release of any radioactive material and did not challenge the health and safety of the public.
"The NRC Resident Inspector has been notified."
"On 5/2/2015 at 1247 CDT, while the plant was in MODE 5 for a refueling outage with the vessel cavity flooded, during logic testing of the non-credited essential 4kV bus, MNGP [Monticello Nuclear Generating Plant] experienced a human performance error that caused a loss of the 4kV bus and essential load center. Loss of the load center de-energized valve position indication on one shutdown cooling isolation valve. This tripped the shutdown cooling pump on a pump suction interlock, resulting in the loss of shutdown cooling. This is being reported under 10 CFR 50.72(b)(3)(v)(B) as an event or condition that could have prevented the fulfillment of the safety function of structures or systems that are needed to remove residual heat.
"Following the event, the safety related load centers were cross-tied to allow restoration of shutdown cooling. Shutdown cooling was restored at 1603. While shutdown cooling was out of service, vessel water temperature rose approximately 10øF to 91.1øF, which is within the allowed temperature band.
"This event did not result in the release of any radioactive material and did not challenge the health and safety of the public.
"The NRC Resident Inspector has been notified."
Power Reactor
Event Number: 51035
Facility: MILLSTONE
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHAEL FRECHETTE
HQ OPS Officer: VINCE KLCO
Region: 1 State: CT
Unit: [] [] [3]
RX Type: [1] GE-3,[2] CE,[3] W-4-LP
NRC Notified By: MICHAEL FRECHETTE
HQ OPS Officer: VINCE KLCO
Notification Date: 05/03/2015
Notification Time: 00:05 [ET]
Event Date: 05/02/2015
Event Time: 21:30 [EDT]
Last Update Date: 05/03/2015
Notification Time: 00:05 [ET]
Event Date: 05/02/2015
Event Time: 21:30 [EDT]
Last Update Date: 05/03/2015
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):
MEL GRAY (R1DO)
MEL GRAY (R1DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 3 | N | Y | 100 | Power Operation | 100 | Power Operation |
NORMAL AND HI RANGE VENTILATION PROCESS RADIATION MONITORS OUT OF SERVICE
"Loss of assessment capability due to unplanned removal from service of a radiation monitor due to process flow monitor indication failing hi. The normal and hi range ventilation vent process radiation monitors (3HVR*RE10A/B are out of service. This condition was discovered during control room rounds. The condition is reportable per 10CFR50.72(b)(3)(xiii)."
Compensatory measures are in place.
The licensee notified the NRC Resident Inspector and applicable State and Local authorities.
"Loss of assessment capability due to unplanned removal from service of a radiation monitor due to process flow monitor indication failing hi. The normal and hi range ventilation vent process radiation monitors (3HVR*RE10A/B are out of service. This condition was discovered during control room rounds. The condition is reportable per 10CFR50.72(b)(3)(xiii)."
Compensatory measures are in place.
The licensee notified the NRC Resident Inspector and applicable State and Local authorities.