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Final Rule

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

Agency
NRC
Document Number
2026-10935
Published
June 1, 2026
Effective Date
June 16, 2026

Abstract

The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of June 16, 2026, for the direct final rule that was published in the Federal Register on April 2, 2026. This direct final rule amended 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.

Federal Register Source

This document is published by the Office of the Federal Register, National Archives and Records Administration. Access the full regulatory text, preamble, and docket comments below.

View Full Text on FederalRegister.gov →

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Frequently Asked Questions

What is the 2026-10935 Federal Register document?
Document 2026-10935 is a Final Rule published by the Nuclear Regulatory Commission in the Federal Register on June 1, 2026, with an effective date of June 16, 2026. The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of June 16, 2026, for the direct final rule that was published in the Federal Register on April 2, 2026. This direct final rule amended 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. View the original at https://www.federalregister.gov/documents/2026/06/01/2026-10935/list-of-approved-spent-fuel-storage-casks-holtec-international-hi-storm-umax-canister-storage-system.
Is document 2026-10935 an economically significant rule?
No. Document 2026-10935 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.

Other Rules from NRC

List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16
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Integrated Low-Level Radioactive Waste Disposal
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List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16
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Modernizing Security Requirements
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