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List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5 | Sporos

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List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5

The U.S. Nuclear Regulatory Commission (NRC) is amending 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).

Published

Apr 2, 2026

Effective

Jun 16, 2026

Comments Close

May 4, 2026(33d)

Citation

91 FR 16541

Agencies

2026-06373List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5

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Public Comment Period Open

33 days remaining — closes May 4, 2026.

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Agencies (1)

NRC — Nuclear Regulatory Commission

Topics

Administrative practice and procedure Hazardous waste Indians Intergovernmental relations Nuclear energy Penalties Radiation protection Reporting and recordkeeping requirements Security measures Whistleblowing

Docket IDs

NRC-2026-0562

Regulation ID Numbers (RINs)

3150-AL66

CFR References

10 CFR 72

Document Details

Type: Final Rule
Action: Direct final rule.
Document #: 2026-06373
Citation: 91 FR 16541
Publication Date: Apr 2, 2026
Effective Date: Jun 16, 2026
Dates: This direct final rule is effective June 16, 2026, unless significant adverse comments are received by May 4, 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 If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register.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 this issue of the Federal Register.
Federal Register Pages: Vol. 91, pp. 16541–16546
Page Views: 9

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