Event Notification Report for July 10, 2025
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
07/09/2025 - 07/10/2025
Fuel Cycle Facility
Event Number: 57808
Facility: Louisiana Energy Services
Region: 2 State: NM
Unit: [] [] []
RX Type:
Comments: Uranium Enrichment Facility
Gas Centrifuge Facility
NRC Notified By: Holly Harvey
HQ OPS Officer: Ernest West
Region: 2 State: NM
Unit: [] [] []
RX Type:
Comments: Uranium Enrichment Facility
Gas Centrifuge Facility
NRC Notified By: Holly Harvey
HQ OPS Officer: Ernest West
Notification Date: 07/11/2025
Notification Time: 12:51 [ET]
Event Date: 07/10/2025
Event Time: 13:30 [MDT]
Last Update Date: 07/11/2025
Notification Time: 12:51 [ET]
Event Date: 07/10/2025
Event Time: 13:30 [MDT]
Last Update Date: 07/11/2025
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 and no accident has occurred.
"Urenco USA stores '1S' bottles in storage cabinets that are verified as safe-by-design, and have been analyzed for storage in the storage area as sub-critical under all normal and credible abnormal conditions. '1S' bottles were removed from cabinets and placed onto carts awaiting transfer to new approved cabinets in the cylinder receipt and dispatch building (CRDB).
"An analysis exists for this configuration of '1S' bottles on carts in other areas of the plant but does not presently exist for '1S' bottles stored on carts in the CRDB. The collection of '1S' sample bottles on several mobile carts potentially falls outside of the normal operating conditions analyzed in nuclear criticality safety and integrated safety analysis (ISA) related documentation and results in the facility being in a state that was different than 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 licensee has notified NRC Region 2.
The following information was provided by the licensee via phone and email:
"The facility is in a safe and stable configuration and no accident has occurred.
"Urenco USA stores '1S' bottles in storage cabinets that are verified as safe-by-design, and have been analyzed for storage in the storage area as sub-critical under all normal and credible abnormal conditions. '1S' bottles were removed from cabinets and placed onto carts awaiting transfer to new approved cabinets in the cylinder receipt and dispatch building (CRDB).
"An analysis exists for this configuration of '1S' bottles on carts in other areas of the plant but does not presently exist for '1S' bottles stored on carts in the CRDB. The collection of '1S' sample bottles on several mobile carts potentially falls outside of the normal operating conditions analyzed in nuclear criticality safety and integrated safety analysis (ISA) related documentation and results in the facility being in a state that was different than 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 licensee has notified NRC Region 2.
Agreement State
Event Number: 57807
Rep Org: Texas Dept of State Health Services
Licensee: Chevron Phillips Chemical Company LP
Region: 4
City: Sweeny State: TX
County:
License #: L 06771
Agreement: Y
Docket:
NRC Notified By: Art Tucker
HQ OPS Officer: Robert A. Thompson
Licensee: Chevron Phillips Chemical Company LP
Region: 4
City: Sweeny State: TX
County:
License #: L 06771
Agreement: Y
Docket:
NRC Notified By: Art Tucker
HQ OPS Officer: Robert A. Thompson
Notification Date: 07/10/2025
Notification Time: 20:11 [ET]
Event Date: 07/10/2025
Event Time: 00:00 [CDT]
Last Update Date: 07/10/2025
Notification Time: 20:11 [ET]
Event Date: 07/10/2025
Event Time: 00:00 [CDT]
Last Update Date: 07/10/2025
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
10 CFR Section:
Agreement State
Person (Organization):
Dodson, Doug (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Dodson, Doug (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - STUCK OPEN GAUGE SHUTTER
The following information was provided by the Texas Department of Health (the Department) via email:
"On July 10, 2025, the Department was notified by the licensee that the shutter on a Vega model SH-F1 gauge containing a 1,000 millicurie (original activity) Cs-137 source had failed in the open position during testing. Open is the normal operating position. The licensee reported there is no risk of additional radiation exposure to members of the general public or radiation workers due to this shutter failure. Additional information will be provided as it is received in accordance with SA-300."
Texas incident number: 10209
The following information was provided by the Texas Department of Health (the Department) via email:
"On July 10, 2025, the Department was notified by the licensee that the shutter on a Vega model SH-F1 gauge containing a 1,000 millicurie (original activity) Cs-137 source had failed in the open position during testing. Open is the normal operating position. The licensee reported there is no risk of additional radiation exposure to members of the general public or radiation workers due to this shutter failure. Additional information will be provided as it is received in accordance with SA-300."
Texas incident number: 10209