Event Notification Report for January 14, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
01/13/2025 - 01/14/2025
Agreement State
Event Number: 57486
Rep Org: SC Dept of Health & Env Control
Licensee: S&ME, Inc.
Region: 1
City: Blythewood State: SC
County:
License #: 545
Agreement: Y
Docket:
NRC Notified By: Adam Gause
HQ OPS Officer: Tenisha Meadows
Notification Date: 01/06/2025
Notification Time: 14:30 [ET]
Event Date: 01/03/2025
Event Time: 00:00 [EST]
Last Update Date: 01/06/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
Lilliendahl, Jon (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Event Text
AGREEMENT STATE REPORT - DAMAGED PORTABLE GAUGE
The following information was provided by the South Carolina Department of Environmental Services (the Department) via phone and email:
"The licensee informed the Department on January 3, 2025, a portable moisture density device was hit by a piece of construction equipment which caused the device to be disabled or fail to function as designed. The licensee reported that the source rod was broken, but was found by performing a survey of the area. The licensee reported that the source rod was shielded back in the portable moisture density device, packaged, and transported back to the licensee's facility to await disposal. The licensee reported that no other damage to the portable moisture density device was observed. The portable moisture density device is a Humboldt 5001 gauging device (serial number 3521) housing approximately 10 millicuries of cesium-137 and 40 millicuries of americium-241:beryllium. The licensee did not report any overexposures. The licensee did not call the Department on January 3, 2025. The Department was made aware of the event on January 6, 2025. This event is under investigation by the Department."
South Carolina Event Number: TBD
Power Reactor
Event Number: 57491
Facility: Farley
Region: 2 State: AL
Unit: [2] [] []
RX Type: [1] W-3-LP,[2] W-3-LP
NRC Notified By: Roosevelt Scott
HQ OPS Officer: Eric Simpson
Notification Date: 01/13/2025
Notification Time: 10:12 [ET]
Event Date: 12/06/2024
Event Time: 21:06 [CST]
Last Update Date: 01/13/2025
Emergency Class: Non Emergency
10 CFR Section:
50.73(a)(1) - Invalid Specif System Actuation
Person (Organization):
Franke, Mark (R2DO)
Power Reactor Unit Info
Unit |
SCRAM Code |
RX Crit |
Initial PWR |
Initial RX Mode |
Current PWR |
Current RX Mode |
2 |
N |
Y |
100 |
Power Operation |
100 |
Power Operation |
Event Text
60-DAY NOTIFICATION OF INVALID SPECIFIED SYSTEM ACTUATION
The following information was provided by the licensee via phone and email:
"This 60-day optional telephone notification is being made in lieu of a licensee event report (LER) submittal as allowed by 10 CFR 50.73(a)(1). This notification is made pursuant to the reporting requirements specified in 10 CFR 50.73(a)(2)(iv)(A) for an invalid actuation of one of the systems listed in 10 CFR 50.73(a)(2)(iv)(B).
"At approximately 2104 CST, on December 6, 2024, while at 100 percent power, an invalid actuation of the B2G load sequencer (B Train) occurred due to a human performance error during maintenance. The B2G load sequencer initiated a complete actuation of the 'B' Train which included auxiliary feedwater (AFW) and closing the 2B diesel generator (DG) output breaker as designed. All systems started successfully. The 2B DG was not running at the time nor was it required to be. The DG breaker protective relay actuated and the 2B DG was declared inoperable.
"Operators immediately recognized the invalid signal and immediately secured the AFW system at 2106 CST. The auto start of the AFW system had negligible effects on plant systems and reactor power.
"Following event investigation and equipment inspections, the 2B DG was returned to operable status in approximately 24 hours.
"The actuation was not initiated in response to actual plant conditions, it was not an intentional manual initiation, and there were no parameters satisfying the requirements for initiation of the system. Therefore, this event has been determined to be an invalid actuation.
"This event did not result in any adverse impact to the health and safety of the public. The Resident Inspector was immediately notified."