Event Notification Report for August 03, 2018
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/02/2018 - 08/03/2018
Power Reactor
Event Number: 53537
Facility: FERMI
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: EHAN HAUSER
HQ OPS Officer: VINCE KLCO
Region: 3 State: MI
Unit: [2] [] []
RX Type: [2] GE-4
NRC Notified By: EHAN HAUSER
HQ OPS Officer: VINCE KLCO
Notification Date: 08/03/2018
Notification Time: 14:10 [ET]
Event Date: 08/03/2018
Event Time: 09:40 [EDT]
Last Update Date: 08/03/2018
Notification Time: 14:10 [ET]
Event Date: 08/03/2018
Event Time: 09:40 [EDT]
Last Update Date: 08/03/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
Person (Organization):
STEVE ORTH (R3DO)
STEVE ORTH (R3DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | N | Y | 100 | Power Operation | 100 | Power Operation |
HIGH PRESSURE COOLANT INJECTION DECLARED INOPERABLE
"At 0940 EDT on August 3, 2018, the Division 2 Mechanical Draft Cooling Tower (MDCT) fans were declared inoperable due to failure of the over speed fan brake inverter. The brakes prevent fan over speed from a design basis tornado. The MDCT fans are required to support operability of the Ultimate Heat Sink (UHS). The UHS is required to support operability of the Division 2 Emergency Equipment Cooling Water (EECW) system. The EECW system cools various safety related components, including the High Pressure Coolant Injection (HPCI) system room cooler. An unplanned HPCI inoperability occurred based on a loss of the HPCI Room Cooler. Investigation into why the Division 2 MDCT fan over speed brake inverter failed is in progress. This report is being made pursuant to 10CFR50.72(b)(3)(v)(D) based on an unplanned HPCI inoperability.
"The NRC Resident Inspector has been notified."
"At 0940 EDT on August 3, 2018, the Division 2 Mechanical Draft Cooling Tower (MDCT) fans were declared inoperable due to failure of the over speed fan brake inverter. The brakes prevent fan over speed from a design basis tornado. The MDCT fans are required to support operability of the Ultimate Heat Sink (UHS). The UHS is required to support operability of the Division 2 Emergency Equipment Cooling Water (EECW) system. The EECW system cools various safety related components, including the High Pressure Coolant Injection (HPCI) system room cooler. An unplanned HPCI inoperability occurred based on a loss of the HPCI Room Cooler. Investigation into why the Division 2 MDCT fan over speed brake inverter failed is in progress. This report is being made pursuant to 10CFR50.72(b)(3)(v)(D) based on an unplanned HPCI inoperability.
"The NRC Resident Inspector has been notified."
Independent Spent Fuel Storage Installation
Event Number: 53605
Rep Org: SAN ONOFRE
Licensee: SOUTHERN CALIFORNIA EDISON COMPANY
Region: 4
City: SAN CLEMENTE State: CA
County: SAN DIEGO
License #: GL
Agreement: Y
Docket: 72-41
NRC Notified By: CHRIS DIMENTO
HQ OPS Officer: PHIL NATIVIDAD
Licensee: SOUTHERN CALIFORNIA EDISON COMPANY
Region: 4
City: SAN CLEMENTE State: CA
County: SAN DIEGO
License #: GL
Agreement: Y
Docket: 72-41
NRC Notified By: CHRIS DIMENTO
HQ OPS Officer: PHIL NATIVIDAD
Notification Date: 09/14/2018
Notification Time: 16:00 [ET]
Event Date: 08/03/2018
Event Time: 00:00 [PST]
Last Update Date: 09/14/2018
Notification Time: 16:00 [ET]
Event Date: 08/03/2018
Event Time: 00:00 [PST]
Last Update Date: 09/14/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
72.75(d)(1) - SFTY EQUIP. DISABLED OR FAILS TO FUNCTION
10 CFR Section:
72.75(d)(1) - SFTY EQUIP. DISABLED OR FAILS TO FUNCTION
Person (Organization):
MARK HAIRE (R4DO)
WILLIAM GOTT (IRD)
MARK HAIRE (R4DO)
WILLIAM GOTT (IRD)
SPENT FUEL CANISTER BECAME BOUND DURING DOWNLOAD INTO DRY STORAGE
"On Friday, August 3, [2018,] at approximately 1245 PST, Holtec International (a contractor for Southern California Edison (SCE)) was lowering a Multi-Purpose Canister (MPC) loaded with spent fuel into the Cavity Enclosure Container (CEC) of the SONGS Holtec UMAX Independent Spent Fuel Storage Installation (ISFSI) for purposes of dry storage. The canister was suspended from a Holtec Vertical Cask Transporter (VCT). During the download, the canister encountered an interference with the CEC divider shell and became bound in place. As a result, the downloader slings of the VCT became slack while the MPC was resting partially inside the CEC.
"Once Holtec became aware of the situation, the VCT towers were raised in order to restore tension in the rigging and to raise the MPC. The VCT was then adjusted, and the MPC was then safely lowered into the CEC and the rigging was disengaged.
"There was no effect on the integrity of the canister or release of radioactive material as a result of this event.
"This event meets the reporting criteria of 10CFR72.75(d)(1) in that the VCT, which is an important-to-safety component, was placed in a configuration which defeated its ability to perform its safety function. The VCT and associated rigging are described in Certificate of Compliance 1040, Technical Specification 5.2.c.3, which requires that lifting equipment shall have redundant drop protection features which prevent uncontrolled lowering of the load. By placing the VCT in the configuration of this event, the single-failure proof nature of the lifting devices was defeated. The VCT was no longer capable of mitigating the consequence of an accident, and there was no redundant equipment available and operable to perform the required safety function.
"SCE made an original determination that the event did not require a report. However, SCE contacted the NRC [Region IV] on Monday August 6th and again on Tuesday August 7th to provide details of the event.
"It has now been determined that the event is reportable under 10CFR72.75(d)(1) and this late report is being made."
Licensee notified RIV (Simpson).
"On Friday, August 3, [2018,] at approximately 1245 PST, Holtec International (a contractor for Southern California Edison (SCE)) was lowering a Multi-Purpose Canister (MPC) loaded with spent fuel into the Cavity Enclosure Container (CEC) of the SONGS Holtec UMAX Independent Spent Fuel Storage Installation (ISFSI) for purposes of dry storage. The canister was suspended from a Holtec Vertical Cask Transporter (VCT). During the download, the canister encountered an interference with the CEC divider shell and became bound in place. As a result, the downloader slings of the VCT became slack while the MPC was resting partially inside the CEC.
"Once Holtec became aware of the situation, the VCT towers were raised in order to restore tension in the rigging and to raise the MPC. The VCT was then adjusted, and the MPC was then safely lowered into the CEC and the rigging was disengaged.
"There was no effect on the integrity of the canister or release of radioactive material as a result of this event.
"This event meets the reporting criteria of 10CFR72.75(d)(1) in that the VCT, which is an important-to-safety component, was placed in a configuration which defeated its ability to perform its safety function. The VCT and associated rigging are described in Certificate of Compliance 1040, Technical Specification 5.2.c.3, which requires that lifting equipment shall have redundant drop protection features which prevent uncontrolled lowering of the load. By placing the VCT in the configuration of this event, the single-failure proof nature of the lifting devices was defeated. The VCT was no longer capable of mitigating the consequence of an accident, and there was no redundant equipment available and operable to perform the required safety function.
"SCE made an original determination that the event did not require a report. However, SCE contacted the NRC [Region IV] on Monday August 6th and again on Tuesday August 7th to provide details of the event.
"It has now been determined that the event is reportable under 10CFR72.75(d)(1) and this late report is being made."
Licensee notified RIV (Simpson).