Data / Federal rules / 2026-06374
List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5
The Nuclear Regulatory Commission published this proposed rule in the Federal Register on April 2, 2026. Comments closed on May 4, 2026.
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What the agency says
The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its spent fuel storage regulations by revising the Holtec International HI-STORM UMAX Canister Storage System listing within the "List of approved spent fuel storage casks" to include Amendment No. 5 to Certificate of Compliance No. 1040. Amendment No. 5 revises the certificate of compliance to include two new versions of the HI-STORM UMAX design (Version B1 and B2).
Key facts
- Document number
- 2026-06374
- Type
- Proposed rule
- Action
- Proposed rule
- Agency
- Nuclear Regulatory Commission
- Published
- April 2, 2026
- Comments due
- May 4, 2026
- Dates
- Submit comments by May 4, 2026. 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.
- Docket
- NRC-2026-0562
- Regulation ID (RIN)
- 3150-AL66
- Code of Federal Regulations
- 10 CFR 72
- Pages
- 3
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Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.