Event Notification Report for July 26, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/25/2025 - 07/26/2025
EVENT NUMBERS
57829
57829
Fuel Cycle Facility
Event Number: 57829
Facility: Louisiana Energy Services
Region: 2 State: NM
Unit: [] [] []
RX Type:
Comments: Uranium Enrichment Facility
Gas Centrifuge Facility
NRC Notified By: Barry Love
HQ OPS Officer: Ernest West
Region: 2 State: NM
Unit: [] [] []
RX Type:
Comments: Uranium Enrichment Facility
Gas Centrifuge Facility
NRC Notified By: Barry Love
HQ OPS Officer: Ernest West
Notification Date: 07/27/2025
Notification Time: 13:40 [ET]
Event Date: 07/26/2025
Event Time: 13:48 [MDT]
Last Update Date: 07/27/2025
Notification Time: 13:40 [ET]
Event Date: 07/26/2025
Event Time: 13:48 [MDT]
Last Update Date: 07/27/2025
Emergency Class: Non Emergency
10 CFR Section:
PART 70 APP A (b)(1) - Unanalyzed Condition
10 CFR Section:
PART 70 APP A (b)(1) - Unanalyzed Condition
Person (Organization):
Davis, Bradley (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Davis, Bradley (R2DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
UNANALYZED CONDITION
The following information was provided by the licensee via phone and email:
"The facility is in a safe and stable configuration. Additionally, the facility is not [and] has never been in a flooded state, and no accident has occurred.
"Urenco USA has stored three end-of-life uranium hexafluoride traps in the ventilated room on the first floor of the cylinder receipt and dispatch building (CRDB). These traps were previously installed in the system on the second floor of the process services corridor (PSC). While installed, these traps have been analyzed as safe for movement and interaction without any external controls.
"Flooding is not considered a credible event for the second floor of the PSC. However, these traps have been moved to the first floor of the CRDB for storage where flooding is a credible event. A first-floor condition of flooding with the traps has not been modeled in the nuclear criticality safety analysis (NCSA).
"The storage of traps in the first-floor ventilated room potentially falls outside of the normal operating conditions analyzed in NCSA and integrated safety analysis (ISA) related documentation and results in the facility being in a state that was different from analyzed in the ISA.
"Corrective actions have begun."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
Personnel access to the area has been restricted pending completion of the evaluation.
The following information was provided by the licensee via phone and email:
"The facility is in a safe and stable configuration. Additionally, the facility is not [and] has never been in a flooded state, and no accident has occurred.
"Urenco USA has stored three end-of-life uranium hexafluoride traps in the ventilated room on the first floor of the cylinder receipt and dispatch building (CRDB). These traps were previously installed in the system on the second floor of the process services corridor (PSC). While installed, these traps have been analyzed as safe for movement and interaction without any external controls.
"Flooding is not considered a credible event for the second floor of the PSC. However, these traps have been moved to the first floor of the CRDB for storage where flooding is a credible event. A first-floor condition of flooding with the traps has not been modeled in the nuclear criticality safety analysis (NCSA).
"The storage of traps in the first-floor ventilated room potentially falls outside of the normal operating conditions analyzed in NCSA and integrated safety analysis (ISA) related documentation and results in the facility being in a state that was different from analyzed in the ISA.
"Corrective actions have begun."
The following additional information was obtained from the licensee in accordance with Headquarters Operations Officers Report Guidance:
Personnel access to the area has been restricted pending completion of the evaluation.