ML23055A157
| ML23055A157 | |
| Person / Time | |
|---|---|
| Site: | 07003103 |
| Issue date: | 02/24/2023 |
| From: | Padgett W Louisiana Energy Services, URENCO USA Energy Services |
| To: | Office of Nuclear Material Safety and Safeguards, Document Control Desk |
| References | |
| LES-23-034-NRC | |
| Download: ML23055A157 (1) | |
Text
LES-23-034-NRC ATTN: Document Control Desk Director Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Louisiana Energy Services, LLC NRC Docket No. 70-3103
Subject:
60 Day Report for Broken Uplift Restraint EN 56302
Reference:
- 1. EN 56302, Broken Uplift Restraint on Crane On January 5, 2023, Louisiana Energy Services LLC, dba Urenco USA (UUSA), made an Event Notification to the Nuclear Regulatory Commission (NRC) Operations Center in accordance with 10 CFR 70.74(a) and 10 CFR 70 Appendix A (a)(4). This notification was made due to a broken crane component that was part of an IROFS. Reference 1 details this occurrence.
Pursuant to 10 CFR 70.74(b), UUSA herewith provides the written follow-up report as.
Should there be any questions concerning this submittal, please contact Chris Schwarz, Licensing and Performance Assessment Manager, at 575.394.5783.
Respectfully, Wyatt Padgett Compliance Manager : 60 Day Report for Broken Uplift Restraint EN 56302
Wyatt Padgett Digitally signed by Wyatt Padgett Date: 2023.02.24 08:27:53 -07'00'
LES-23-034-NRC Page 2 of 6 CC:
U.S. Nuclear Regulatory Commission, Region II 245 Peachtree Center Avenue, NE.
Suite 1200 Atlanta, GA 30303-1257 RidsRgn2MailCenter@NRC.gov Soly Soto Lugo, Branch Chief Fuel Facility Licensing U.S. Nuclear Regulatory Commission Soly.Sotolugo@nrc.gov Jonathan Rowley, Senior Project Manager U.S. Nuclear Regulatory Commission Jonathan.Rowley@nrc.gov Robert Williams, Region II, Projects Branch 1, Chief U.S. Nuclear Regulatory Commission Robert.Williams@nrc.gov Timothy Sippel, Senior Fuel Facility Inspector U.S. Nuclear Regulatory Commission Timothy.Sippel@nrc.gov
LES-23-034-NRC Page 3 of 6 60 Day Report for Broken Uplift Restraint EN 56302 10 CFR 70.50(c)(1)
(i) Caller's name, position title, and call-back telephone number; x
The individual who facilitated Event Notification56302 was Jim Rickman, Senior Licensing Specialist. The call-back telephone number is 575-394-6558.
(ii) Date, time, and exact location of the event; x
The event occurred at 1445 MT on January 5, 2023. The location of this event was on the UBC (Uranium By-Product Cylinder) Pad at Urenco USA in Eunice, New Mexico (Lea County).
(iii) Description of the event; The operator of the UBC Pad gantry crane inadvertently ran over a strap laying on the crane rail resulting in damage to an IROFS27e component. The component restrains the crane from uplift during a tornado or high wind event.
(A) Radiological or chemical hazards involved, including isotopes, quantities, and chemical and physical form of any material released; x
There were no radiological or chemical hazards involved or released.
(B) Actual or potential health and safety consequences to the workers, the public, and the environment, including relevant chemical and radiation data for actual personnel exposures to radiation or radioactive materials or hazardous chemicals produced from licensed materials (e.g., level of radiation exposure, concentration of chemicals, and duration of exposure);
x There were no actual or potential health and safety consequences to workers, the public, or the environment. No unexpected exposure to radioactive materials or hazardous chemicals produced from licensed materials occurred.
x Plant instrumentation detected no release during the event.
x No contamination events occurred; therefore, no decontamination was necessary.
x No dose alarms or dose rate alarms occurred during the response.
(C) The sequence of occurrences leading to the event, including degradation or failure of structures, systems, equipment, components, and activities of personnel relied on to prevent potential accidents or mitigate their consequences; and
LES-23-034-NRC Page 4 of 6 x
On January 5, 2023, heeled 48Y cylinders were being loaded onto a trailer for shipment.
x After the 7th cylinder was loaded onto the trailer, one of the tiedown straps was pinched by the cylinder. This was corrected by moving the cylinder to release the strap.
x To prevent pinching another strap during loading of the 8th cylinder, the straps were moved farther away from the trailer. The new location was on the UBC crane rail. The new hazard created was not recognized.
x When loading the 8th cylinder, the strap came in contact with the uplift jaw and the bolts holding the uplift jaw in place, sheared.
x A Shift Manager inspected the crane and determined the damaged component was part of IROFS27e.
(D) Whether the remaining structures, systems, equipment, components, and activities of personnel relied on to prevent potential accidents or mitigate their consequences are available and reliable to perform their function; x
An engineering Non-Conformance Report determined the remaining uplift restraints would adequately perform the safety function of IROFS27e even though one of the restraints was damaged.
Therefore, the performance requirements of 10 CFR 70.61 were met at all times the crane was required to be operable.
x The crane was repaired and IROFS27e is fully capable of performing its safety function.
(iv) External conditions affecting the event; x
There were no external conditions affecting this event.
(v) Additional actions taken by the licensee in response to the event; x
Work using the crane was stopped.
x Personnel moved the crane away from UF6 cylinders.
x The event was entered into the Corrective Action Program as EV159031.
x Logistics personnel participated in a stand down discussion concerning situational awareness, recognition and mitigation of hazards.
x The crane was repaired and IROFS27e was restored to full capability.
(vi) Status of the event (e.g., whether the event is on-going or was terminated);
x The event has been terminated and no additional actions are required.
(vii) Current and planned site status, including any declared emergency class;
LES-23-034-NRC Page 5 of 6 x
The UBC Pad crane was repaired on February 7, 2023 and IROFS27e is fully capable of performing its intended safety function.
(viii) Notifications, related to the event, that were made or are planned to any local, State, or other Federal agencies; x
The NRC was notified on January 5, 2023. No other notifications were made or are planned to other government agencies.
(ix) Status of any press releases, related to the event, that were made or are planned.
x No press releases were made and no press releases are planned.
10 CFR 50(c)(2), and by 70.74 and Appendix A paragraph (b)(4)
(ii) The probable cause of the event, including all factors that contributed to the event and the manufacturer and model number (if applicable) of any equipment that failed or malfunctioned; x
The cause of this event is that the container handlers did not recognize the hazard created by placing the straps on the crane rail.
(iii) Corrective actions taken or planned to prevent occurrence of similar or identical events in the future and the results of any evaluations or assessments; and x
The container handlers have been briefed on the importance of maintaining situational awareness.
(iv) For licensees subject to Subpart H of this part, whether the event was identified and evaluated in the Integrated Safety Analysis.
x The accident sequence for EE-TORNADO & HIGH WIND-SBM-CRDB SHELL-UBC STORAGE PAD (T) is excessive tornado loads and high wind loads above normal building or crane code design levels leading to building or crane failure and impacts on UF6 process systems leading to UF6 release. IROFS27e mitigates this accident sequence.