| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
10/29/2013 - 10/30/2013 ** EVENT NUMBERS ** |
 | !!!!! THIS EVENT HAS BEEN RETRACTED. THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 49389 | Facility: WATTS BAR
Region: 2 State: TN
Unit: [1] [ ] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: BRIAN MCILNAY
HQ OPS Officer: DONG HWA PARK | Notification Date: 09/27/2013
Notification Time: 13:35 [ET]
Event Date: 09/27/2013
Event Time: 12:45 [EDT]
Last Update Date: 10/29/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(ii)(B) - UNANALYZED CONDITION
| Person (Organization):
MARVIN SYKES (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 | Event Text CALCULATION ERROR RESULTED IN UNANALYZED CONDITION FOR APPENDIX R EVENT
"On July 18, 2012, TVA identified that a calculation error resulted in the inability to establish Essential Raw Cooling Water (ERCW) supply to the Component Cooling System (CCS) heat exchanger within the required time to ensure cooling is available to Reactor Coolant System (RCS) seal injection water during an Appendix R event. TVA promptly established fire watches as a compensatory measure to prevent initiation of fires in the areas of concern. Subsequently, abnormal operating instructions were revised to take action to ensure that adequate time is available to establish ERCW cooling to CCS, and ensure cooling to [Reactor Coolant Pump] RCP seal injection water.
"The calculation error was identified on July 18, 2012, however, it was not recognized at the time that an unanalyzed condition existed that was reportable under 10 CFR 50.72(b)(3)(ii)(B). This report documents that the condition that existed until fire watches were established is reportable under 10 CFR 50.72(b)(3)(ii)(B).
"The NRC Resident Inspector has been notified of this condition."
* * * RETRACTION FROM BRIAN MCILNAY TO DONALD NORWOOD AT 1021 EDT ON 10/29/2013 * * *
"Watts Bar Nuclear Plant Unit 1 is retracting this 8 hour non-emergency notification made on September 27, 2013, at 1335 EDT (EN #49389). The notification on September 27, 2013, reported a calculation error which resulted in the inability to establish Essential Raw Cooling Water (ERCW) to supply the Component Cooing System (CCS) heat exchanger within the required time to ensure cooling is available to Reactor Coolant System (RCS) seal injection water during an Appendix R event.
"Subsequent analysis of actual plant data concluded that TVA could have established cooling to RCS seal injection during the subject Appendix R event, and achieved and maintained fire safe shutdown. Therefore, this event was not reportable under 10 CFR 50.72(b)(3)(ii)(B).
"The NRC Resident Inspector has been notified."
R2DO (Bartley) notified. |
| Power Reactor | Event Number: 49480 | Facility: PEACH BOTTOM
Region: 1 State: PA
Unit: [2] [3] [ ]
RX Type: [2] GE-4,[3] GE-4
NRC Notified By: CHRIS WEICHLER
HQ OPS Officer: DONG HWA PARK | Notification Date: 10/29/2013
Notification Time: 05:01 [ET]
Event Date: 10/29/2013
Event Time: 05:00 [EDT]
Last Update Date: 10/30/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
PAUL KROHN (R1DO)
|
| Unit | SCRAM Code | RX CRIT | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode | | 2 | N | Y | 100 | Power Operation | 100 | Power Operation | | 3 | N | Y | 100 | Power Operation | 100 | Power Operation | Event Text MAIN STACK RADIATION MONITORS REMOVED FROM SERVICE
"At 0500 [EDT] Tuesday, October 29, the Peach Bottom Atomic Power Station (PBAPS) main stack radiation monitors will be removed from service for planned preventative maintenance activities on the flow elements. This maintenance is scheduled to be worked continuously until completion to minimize out of service time. The planned main stack radiation monitor outage is scheduled to be completed within 13 hours. Periodic gas sampling will be performed in accordance with the offsite dose calculation manual while the monitors are out of service.
"The NRC Resident Inspector has been notified.
"There are no follow-up written reports required for this event."
* * * UPDATE ON 10/30/13 AT 0216 EDT FROM BOB RAUCCI TO DONG PARK * * *
"This is an update to notification #49480. The out of service duration has been extended from the original estimated 13 hours due to work scope taking longer than expected with fatigue rule compliance requirements. The radiation monitor maintenance has been completed and the components have been restored to service, however, the post maintenance testing will be delayed until this morning (10/30/13) when the necessary component expert resource is next available. Periodic gas sampling remains in effect in accordance with the Off Site Dose Calculation Manual."
The licensee will notify the NRC Resident Inspector.
Notified R1DO (Krohn). |
| Power Reactor | Event Number: 49481 | Facility: NINE MILE POINT
Region: 1 State: NY
Unit: [1] [ ] [ ]
RX Type: [1] GE-2,[2] GE-5
NRC Notified By: RYAN HAMILTON
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 10/29/2013
Notification Time: 11:45 [ET]
Event Date: 10/29/2013
Event Time: 05:56 [EDT]
Last Update Date: 10/29/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
| Person (Organization):
PAUL KROHN (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 | Event Text UNPLANNED LOSS OF TEN AREA RADIATION MONITORS IMPACTING EMERGENCY ASSESSMENT CAPABILITY
"At 0556 EDT, [on 10/29/13], Nine Mile Point Unit 1 experienced an unplanned loss of ten area radiation monitors due to a loss of the associated power supply. These monitors are located throughout the station. Compensatory local monitoring was established in the affected areas until the area radiation monitors could be restored to service. The cause of the loss of the power supply was determined to be a blown fuse. The fuse was replaced and the power supply was restored at 1040 EDT. All area radiation monitors are restored. Post maintenance testing is in progress.
"The condition is reportable as a major loss of emergency assessment capability in accordance with 10CFR50.72(b)(3)(xiii). The NRC Resident Inspector has been notified.
"An update will be provided once the area radiation monitors have been restored to functional status."
* * * UPDATE FROM RYAN C. HAMILTON TO PETER J. SNYDER AT 1545 EDT ON 10/29/13 * * *
"Post maintenance testing is complete and the affected area radiation monitors are declared functional as of 1440 [EDT] on 10/29/13."
Notified R1DO (Krohn). |
| Power Reactor | Event Number: 49482 | Facility: PALO VERDE
Region: 4 State: AZ
Unit: [1] [2] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: DAN HAUTALA
HQ OPS Officer: JOHN SHOEMAKER | Notification Date: 10/29/2013
Notification Time: 13:10 [ET]
Event Date: 10/29/2013
Event Time: 06:05 [MST]
Last Update Date: 10/29/2013 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
| Person (Organization):
JAMES DRAKE (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 | | 3 | N | N | 0 | Defueled | 0 | Defueled | Event Text OFFSITE NOTIFICATION DUE TO EMPLOYEE FATALITY
"At approximately 0530 MST on October 29, 2013, an Arizona Public Service Company (APS) employee developed a personal medical condition in the Owner Controlled Area prior to entering the Protected Area at the Palo Verde Nuclear Generation Station (PVNGS). PVNGS Emergency Medical Technicians responded and transported the individual to an offsite emergency trauma center. Upon arrival at the trauma center, medical personnel declared the individual deceased at 0650 [on 10/29/13].
"The fatality was not work related and the individual was outside of the Radiological Controlled Area. No radioactive material or contamination was involved. No news release by APS is planned. Notifications to the Arizona Division of Occupational Safety and Health, and the Maricopa County Sheriff's Office are planned.
"The NRC Resident Inspectors have been notified." | |