Data / Federal rules / 2025-14294
List of Approved Spent Fuel Storage Casks: TN Americas LLC, NUHOMS® EOS Dry Spent Fuel Storage System, Certificate of Compliance No. 1042, Amendment No. 4
The Nuclear Regulatory Commission published this final rule in the Federal Register on July 29, 2025. It took effect on October 14, 2025. Comments closed on August 28, 2025.
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What the agency says
The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the TN Americas LLC, NUHOMS[supreg] EOS Dry Spent Fuel Storage System listing within the "List of approved spent fuel storage casks" to include Amendment No. 4 to Certificate of Compliance No. 1042. Amendment No. 4 changes the certificate of compliance to incorporate a method to determine new loading patterns, introduce a steel plate composite option, introduce the use of MAVRIC software for a confirmatory run of the HSM-MX dose rates, make technical specification changes for consistency and terminology clarification, make various updated final safety analysis report editorial corrections for consistency and clarification, add measured exposures from past loading campaigns, allow use of a blended Portland cement, change the use of the MX-Loading Crane, and clarify the scenarios under which the maximum heat loads can be reduced.
Key facts
- Document number
- 2025-14294
- Type
- Final rule
- Action
- Direct final rule
- Agency
- Nuclear Regulatory Commission
- Published
- July 29, 2025
- Takes effect
- October 14, 2025
- Comments due
- August 28, 2025
- Dates
- This direct final rule is effective October 14, 2025, unless significant adverse comments are received by August 28, 2025. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration of only comments received on or before this date. Comments received on this direct final rule will also be considered to be comments on a companion proposed rule published in the Proposed Rules section of th
- Docket
- NRC-2025-0070
- Regulation ID (RIN)
- 3150-AL33
- Code of Federal Regulations
- 10 CFR 72
- Topics
- Administrative practice and procedure; Hazardous waste; Indians; Intergovernmental relations; Nuclear energy; Penalties; Radiation protection; Reporting and recordkeeping requirements; Security measures; Whistleblowing
- Pages
- 6
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