Event Notification Report for January 09, 2012
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/08/2012 - 01/09/2012
Independent Spent Fuel Storage Installation
Event Number: 47580
Rep Org: DIABLO CANYON
Licensee: PACIFIC GAS & ELECTRIC CO.
Region: 4
City: AVILA BEACH State: CA
County: SAN LUIS OBISPO
License #: SNM-2511
Agreement: Y
Docket: 72-26
NRC Notified By: MICHAEL QUITTER
HQ OPS Officer: BILL HUFFMAN
Licensee: PACIFIC GAS & ELECTRIC CO.
Region: 4
City: AVILA BEACH State: CA
County: SAN LUIS OBISPO
License #: SNM-2511
Agreement: Y
Docket: 72-26
NRC Notified By: MICHAEL QUITTER
HQ OPS Officer: BILL HUFFMAN
Notification Date: 01/09/2012
Notification Time: 23:44 [ET]
Event Date: 01/09/2012
Event Time: 14:05 [PST]
Last Update Date: 02/29/2012
Notification Time: 23:44 [ET]
Event Date: 01/09/2012
Event Time: 14:05 [PST]
Last Update Date: 02/29/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
RYAN LANTZ (R4DO)
WILLIAM RULAND (NRR)
CHRISTEPHER MCKENNEY (FSME)
RYAN LANTZ (R4DO)
WILLIAM RULAND (NRR)
CHRISTEPHER MCKENNEY (FSME)
NUT ON HOLD-DOWN STUD WAS FOUND LOOSE
"On January 9, 2012, at 1405 [PST], plant personnel notified the Diablo Canyon shift manager that a nut on a hold-down stud on an Independent Spent Fuel Storage Installation(ISFSI) HISTORM spent fuel storage cask was loose to the touch. Plant personnel hand tightened the nut and verified that none of the other 16 casks in the facility had nuts that were loose to the touch.
"The Diablo Canyon ISFSI design requires that each spent fuel storage cask be installed with the cask compressed against the embedment plate using 16, two-inch diameter, anchor studs. Each stud is pre-loaded to approximately 157,000 lbf. This design ensures the cask will remain stable during a seismic event. A manufacturer's analysis of the stability of the cask with all of the 16 hold down stud nuts installed with no pre-load concluded that the cask would maintain its stability during a seismic event.
"PG&E has contracted the vendor to re-tension the stud and expect[s] completion [by] 1/13/2012. PG&E will assess the need to verify tension of the remaining studs based on the extent of condition evaluation.
"Cause of the loose nut has not yet been determined.
"The NRC Senior Resident Inspector has been informed."
* * * UPDATE AT 2007 EST ON 1/11/2012 FROM PHILIPPE SOENEN TO VINCE KLCO * * *
"On January 11, 2012, at 1325 PDT, plant personnel notified the Diablo Canyon shift manager that two additional nuts on hold-down studs for other ISFSI HISTORM spent fuel storage casks were discovered to be loose. The two additional nuts (one per cask) were discovered when the full effort of two hands was used on the nuts while performing an extent-of-condition evaluation. All 16 nuts on all 16 casks were tested for tightness using the full effort of two hands (i.e., no pre-load).
"NRC senior resident inspector has been informed."
Notified the R4DO (Powers), NRR EO (Cheok), and NMSS EO (Mohseni).
* * * UPDATE AT 1915 EST ON 2/29/2012 FROM DAN STERMER TO CHARLES TEAL * * *
"On February 29, 2012, at 1610 PST, plant personnel notified the Diablo Canyon shift manager that cause analysis of loose nuts on hold-down studs of ISFSI HISTORM spent fuel storage casks determined the cause is not a defect and this occurrence is not reportable. Accordingly, the reporting criteria for Event Notification 47580 is changed from '72.75(c)(1) Non-emergency condition' to 'Voluntary Report.' Pacific Gas and Electric (PG&E) plans to submit a voluntary, written report (licensee event report) to the NRC. PG&E personnel informed the NRC resident inspector."
Notified R4DO (Lantz), NRR EO (Lee), and NMSS EO (Rubenstone).
"On January 9, 2012, at 1405 [PST], plant personnel notified the Diablo Canyon shift manager that a nut on a hold-down stud on an Independent Spent Fuel Storage Installation(ISFSI) HISTORM spent fuel storage cask was loose to the touch. Plant personnel hand tightened the nut and verified that none of the other 16 casks in the facility had nuts that were loose to the touch.
"The Diablo Canyon ISFSI design requires that each spent fuel storage cask be installed with the cask compressed against the embedment plate using 16, two-inch diameter, anchor studs. Each stud is pre-loaded to approximately 157,000 lbf. This design ensures the cask will remain stable during a seismic event. A manufacturer's analysis of the stability of the cask with all of the 16 hold down stud nuts installed with no pre-load concluded that the cask would maintain its stability during a seismic event.
"PG&E has contracted the vendor to re-tension the stud and expect[s] completion [by] 1/13/2012. PG&E will assess the need to verify tension of the remaining studs based on the extent of condition evaluation.
"Cause of the loose nut has not yet been determined.
"The NRC Senior Resident Inspector has been informed."
* * * UPDATE AT 2007 EST ON 1/11/2012 FROM PHILIPPE SOENEN TO VINCE KLCO * * *
"On January 11, 2012, at 1325 PDT, plant personnel notified the Diablo Canyon shift manager that two additional nuts on hold-down studs for other ISFSI HISTORM spent fuel storage casks were discovered to be loose. The two additional nuts (one per cask) were discovered when the full effort of two hands was used on the nuts while performing an extent-of-condition evaluation. All 16 nuts on all 16 casks were tested for tightness using the full effort of two hands (i.e., no pre-load).
"NRC senior resident inspector has been informed."
Notified the R4DO (Powers), NRR EO (Cheok), and NMSS EO (Mohseni).
* * * UPDATE AT 1915 EST ON 2/29/2012 FROM DAN STERMER TO CHARLES TEAL * * *
"On February 29, 2012, at 1610 PST, plant personnel notified the Diablo Canyon shift manager that cause analysis of loose nuts on hold-down studs of ISFSI HISTORM spent fuel storage casks determined the cause is not a defect and this occurrence is not reportable. Accordingly, the reporting criteria for Event Notification 47580 is changed from '72.75(c)(1) Non-emergency condition' to 'Voluntary Report.' Pacific Gas and Electric (PG&E) plans to submit a voluntary, written report (licensee event report) to the NRC. PG&E personnel informed the NRC resident inspector."
Notified R4DO (Lantz), NRR EO (Lee), and NMSS EO (Rubenstone).
Power Reactor
Event Number: 47581
Facility: PEACH BOTTOM
Region: 1 State: PA
Unit: [2] [3] []
RX Type: [2] GE-4,[3] GE-4
NRC Notified By: CJ CAMPBELL
HQ OPS Officer: JOHN KNOKE
Region: 1 State: PA
Unit: [2] [3] []
RX Type: [2] GE-4,[3] GE-4
NRC Notified By: CJ CAMPBELL
HQ OPS Officer: JOHN KNOKE
Notification Date: 01/10/2012
Notification Time: 00:55 [ET]
Event Date: 01/09/2012
Event Time: 17:22 [EST]
Last Update Date: 01/10/2012
Notification Time: 00:55 [ET]
Event Date: 01/09/2012
Event Time: 17:22 [EST]
Last Update Date: 01/10/2012
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):
JAMES TRAPP (R1DO)
JAMES TRAPP (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 |
TECHNICAL SUPPORT CENTER DETERMINED TO BE NON-FUNCTIONAL
"On January 09, 2012 the Technical Support Center(TSC) ventilation was discovered to be non-functional during system testing. At 1722 hours [EST], it was identified that control power was lost to four motor operated dampers. Investigation revealed that a control power fuse was blown. In addition, the TSC ventilation Supply Fan (AHU-1) was identified to have one of two fan belts failed. The fuses were replaced at 19:45 [EST] and the system was restored to service. However, the system has been removed from service this evening to replace the fan belts. An update will be provided when the system is restored to full functionality."
The licensee has notified the NRC Resident Inspector.
* * * UPDATE AT 1744 EST ON 1/10/12 FROM JEFF MOORE TO HUFFMAN * * *
Maintenance personnel installed two new belts on AHU-1 and aligned the motor/fan sheaves to ensure correct operation. TSC ventilation has been restored to the normal condition. The licensee will notify the NRC Resident Inspector.
R1DO (Trapp) notified.
"On January 09, 2012 the Technical Support Center(TSC) ventilation was discovered to be non-functional during system testing. At 1722 hours [EST], it was identified that control power was lost to four motor operated dampers. Investigation revealed that a control power fuse was blown. In addition, the TSC ventilation Supply Fan (AHU-1) was identified to have one of two fan belts failed. The fuses were replaced at 19:45 [EST] and the system was restored to service. However, the system has been removed from service this evening to replace the fan belts. An update will be provided when the system is restored to full functionality."
The licensee has notified the NRC Resident Inspector.
* * * UPDATE AT 1744 EST ON 1/10/12 FROM JEFF MOORE TO HUFFMAN * * *
Maintenance personnel installed two new belts on AHU-1 and aligned the motor/fan sheaves to ensure correct operation. TSC ventilation has been restored to the normal condition. The licensee will notify the NRC Resident Inspector.
R1DO (Trapp) notified.
Fuel Cycle Facility
Event Number: 47578
Facility: NUCLEAR FUEL SERVICES INC.
Region: 2 State: TN
Unit: [] [] []
RX Type: URANIUM FUEL FABRICATION
Comments: HEU CONVERSION & SCRAP RECOVERY
NAVAL REACTOR FUEL CYCLE
LEU SCRAP RECOVERY
NRC Notified By: RANDY SHACKELFORD
HQ OPS Officer: BILL HUFFMAN
Region: 2 State: TN
Unit: [] [] []
RX Type: URANIUM FUEL FABRICATION
Comments: HEU CONVERSION & SCRAP RECOVERY
NAVAL REACTOR FUEL CYCLE
LEU SCRAP RECOVERY
NRC Notified By: RANDY SHACKELFORD
HQ OPS Officer: BILL HUFFMAN
Notification Date: 01/09/2012
Notification Time: 14:32 [ET]
Event Date: 01/09/2012
Event Time: 11:55 [EST]
Last Update Date: 01/09/2012
Notification Time: 14:32 [ET]
Event Date: 01/09/2012
Event Time: 11:55 [EST]
Last Update Date: 01/09/2012
Emergency Class: NON EMERGENCY
10 CFR Section:
PART 70 APP A (c) - OFFSITE NOTIFICATION/NEWS REL
10 CFR Section:
PART 70 APP A (c) - OFFSITE NOTIFICATION/NEWS REL
Person (Organization):
DAVID AYRES (R2DO)
MARISSA BAILEY (NMSS)
FUELS OUO GROUP (E-MA)
DAVID AYRES (R2DO)
MARISSA BAILEY (NMSS)
FUELS OUO GROUP (E-MA)
REPORT TO OFFSITE GOVERNMENT AGENCIES AND PRESS RELEASE DUE TO A CHEMICAL SPILL ONSITE
The licensee reported that approximately 300 gallons of nitric acid spilled in the bulk chemical storage outdoor area from a storage tank. The nitric acid spilled into a dike that surrounds the tank. The leak was isolated and it is believed that no acid breached the dike and entered the environment. Due to fumes from the acid, the licensee shut down production activities and evacuated non-essential personnel from nearby buildings. The licensee is currently remediating the spill and evaluating when to permit personnel normal access to the onsite areas that were evacuated. This event did not involve any radiological material and did not meet emergency declaration criteria. There was no offsite impact from this event. Site security was maintained throughout. No injuries have been reported. The cause of the spill is still being investigated.
This event is being reported to the NRC Operations Center as a "Concurrent Report" because the licensee has notified state, county, and local authorities and will be making a press release. The licensee has also notified the NRC Resident Inspector and Region 2 (Pelchat).
The licensee reported that approximately 300 gallons of nitric acid spilled in the bulk chemical storage outdoor area from a storage tank. The nitric acid spilled into a dike that surrounds the tank. The leak was isolated and it is believed that no acid breached the dike and entered the environment. Due to fumes from the acid, the licensee shut down production activities and evacuated non-essential personnel from nearby buildings. The licensee is currently remediating the spill and evaluating when to permit personnel normal access to the onsite areas that were evacuated. This event did not involve any radiological material and did not meet emergency declaration criteria. There was no offsite impact from this event. Site security was maintained throughout. No injuries have been reported. The cause of the spill is still being investigated.
This event is being reported to the NRC Operations Center as a "Concurrent Report" because the licensee has notified state, county, and local authorities and will be making a press release. The licensee has also notified the NRC Resident Inspector and Region 2 (Pelchat).