Data / Federal rules / 2025-22229
List of Approved Spent Fuel Storage Casks: NAC International, Inc., NAC-UMS® Universal Storage System, Certificate of Compliance No. 1015, Renewed Amendment No. 10, and Revision 1 to Renewed Amendment Nos. 5 Through 9
The Nuclear Regulatory Commission published this final rule in the Federal Register on December 8, 2025. It took effect on February 23, 2026. Comments closed on January 7, 2026.
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What the agency says
The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel regulations by revising the NAC International, Inc., NAC- UMS[supreg] Universal Storage System (NAC-UMS[supreg]) design listing within the "List of approved spent fuel storage casks" to include Renewed Amendment No. 10, and to revise Renewed Amendment Nos. 5 through 9 to Certificate of Compliance No. 1015. The addition of Renewed Amendment No. 10 and Revision 1 to Renewed Amendment Nos. 5 through 9 for the certificate of compliance (CoC) corrects licensing basis deficiencies and updates the address in the CoC to reflect the new address of the applicant's headquarters offices.
Key facts
- Document number
- 2025-22229
- Type
- Final rule
- Action
- Direct final rule
- Agency
- Nuclear Regulatory Commission
- Published
- December 8, 2025
- Takes effect
- February 23, 2026
- Comments due
- January 7, 2026
- Dates
- This direct final rule is effective February 23, 2026, unless significant adverse comments are received by January 7, 2026. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register.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 only for 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
- Docket
- NRC-2025-0025
- Regulation ID (RIN)
- 3150-AL30
- 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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Everything from the Nuclear Regulatory Commission · Rules on administrative practice and procedure · Rules on hazardous waste · Rules on indians · Published in December 2025
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