Event Notification Report for June 26, 2015
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
06/25/2015 - 06/26/2015
Power Reactor
Event Number: 51184
Facility: ARKANSAS NUCLEAR
Region: 4 State: AR
Unit: [1] [2] []
RX Type: [1] B&W-L-LP,[2] CE
NRC Notified By: NATHAN LITTERST
HQ OPS Officer: DANIEL MILLS
Region: 4 State: AR
Unit: [1] [2] []
RX Type: [1] B&W-L-LP,[2] CE
NRC Notified By: NATHAN LITTERST
HQ OPS Officer: DANIEL MILLS
Notification Date: 06/27/2015
Notification Time: 06:40 [ET]
Event Date: 06/26/2015
Event Time: 21:49 [CDT]
Last Update Date: 06/28/2015
Notification Time: 06:40 [ET]
Event Date: 06/26/2015
Event Time: 21:49 [CDT]
Last Update Date: 06/28/2015
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):
VIVIAN CAMPBELL (R4DO)
VIVIAN CAMPBELL (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
SEISMIC MONITOR DECLARED NON FUNCTIONAL
"This notification is being made in accordance with 10 CFR 50.72(b)(3)(xiii) as an event that will result in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g. significant portion of control room indication, Emergency Notification System or offsite notification system.)
"The emergency preparedness plan requires seismic monitoring instruments to diagnose an earthquake for emergency action levels (EAL) HU6 (Natural or destructive phenomena affecting Protected Area) and HA6 (Natural and destructive phenomena affecting Vital Areas).
"At 2149 CST on June 26, 2015, [the] ACS-8003 seismic monitor was declared non-functional due to having a fault light indicated on the C529 seismic cabinet. [The] ACS-8001 seismic monitor had previously been declared non-functional due to the same condition. With these 2 monitors out of service the seismic alarm capability is not available. ANO procedures provide compensatory measures of using offsite sources to obtain seismic data."
The NRC Resident Inspector has been notified.
* * * UPDATE ON 6/28/15 AT 1552 EDT FROM KENYON MCNEAILL TO DONG PARK * * *
"On 6/28/15 at 1232 CDT, batteries have been replaced in ACS-8001 and ACS-8003 seismic monitors. Both monitors have been restored to a fully functional status. Seismic alarm capability is restored and Emergency Assessment Capability has been restored."
The licensee will notify the NRC Resident Inspector. Notified R4DO (Campbell).
"This notification is being made in accordance with 10 CFR 50.72(b)(3)(xiii) as an event that will result in a major loss of emergency assessment capability, offsite response capability, or offsite communications capability (e.g. significant portion of control room indication, Emergency Notification System or offsite notification system.)
"The emergency preparedness plan requires seismic monitoring instruments to diagnose an earthquake for emergency action levels (EAL) HU6 (Natural or destructive phenomena affecting Protected Area) and HA6 (Natural and destructive phenomena affecting Vital Areas).
"At 2149 CST on June 26, 2015, [the] ACS-8003 seismic monitor was declared non-functional due to having a fault light indicated on the C529 seismic cabinet. [The] ACS-8001 seismic monitor had previously been declared non-functional due to the same condition. With these 2 monitors out of service the seismic alarm capability is not available. ANO procedures provide compensatory measures of using offsite sources to obtain seismic data."
The NRC Resident Inspector has been notified.
* * * UPDATE ON 6/28/15 AT 1552 EDT FROM KENYON MCNEAILL TO DONG PARK * * *
"On 6/28/15 at 1232 CDT, batteries have been replaced in ACS-8001 and ACS-8003 seismic monitors. Both monitors have been restored to a fully functional status. Seismic alarm capability is restored and Emergency Assessment Capability has been restored."
The licensee will notify the NRC Resident Inspector. Notified R4DO (Campbell).
Power Reactor
Event Number: 51185
Facility: DAVIS BESSE
Region: 3 State: OH
Unit: [1] [] []
RX Type: [1] B&W-R-LP
NRC Notified By: MARK HELLE
HQ OPS Officer: MARK ABRAMOVITZ
Region: 3 State: OH
Unit: [1] [] []
RX Type: [1] B&W-R-LP
NRC Notified By: MARK HELLE
HQ OPS Officer: MARK ABRAMOVITZ
Notification Date: 06/27/2015
Notification Time: 07:16 [ET]
Event Date: 06/26/2015
Event Time: 23:35 [EDT]
Last Update Date: 06/27/2015
Notification Time: 07:16 [ET]
Event Date: 06/26/2015
Event Time: 23:35 [EDT]
Last Update Date: 06/27/2015
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):
DAVID HILLS (R3DO)
DAVID HILLS (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | N | Y | 100 | Power Operation | 100 | Power Operation |
BOTH AUX FEEDWATER TRAINS DECLARED INOPERABLE
"On June 26, 2015 at 2335 [EDT], with Auxiliary Feedwater (AFW) train 1 declared inoperable for scheduled surveillance testing, AFW train 2 was declared inoperable as a result of the supply breaker for SW1395, Service Water Loop 2 secondaries isolation valve, being found open, i.e. out of its required position. Limiting Condition for Operation (LCO) 3.7.5 Condition D was entered for two Emergency Feedwater trains inoperable. AFW train 1 and the non-safety related motor driven AFW pump were available to provide emergency feedwater if required.
"The breaker was verified to be functioning as required and then closed, restoring the safety function. All associated LCOs were exited by 0133 [EDT] on June 27, 2015."
The licensee notified the NRC Resident Inspector.
"On June 26, 2015 at 2335 [EDT], with Auxiliary Feedwater (AFW) train 1 declared inoperable for scheduled surveillance testing, AFW train 2 was declared inoperable as a result of the supply breaker for SW1395, Service Water Loop 2 secondaries isolation valve, being found open, i.e. out of its required position. Limiting Condition for Operation (LCO) 3.7.5 Condition D was entered for two Emergency Feedwater trains inoperable. AFW train 1 and the non-safety related motor driven AFW pump were available to provide emergency feedwater if required.
"The breaker was verified to be functioning as required and then closed, restoring the safety function. All associated LCOs were exited by 0133 [EDT] on June 27, 2015."
The licensee notified the NRC Resident Inspector.