List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM Flood/Wind System, Certificate of Compliance No. 1032, Amendment No. 10

Published

Sep 3, 2026

Effective

Oct 6, 2026

Citation

91 FR 56574

Docket

NRC-2026-2476

Direct final rule; confirmation of effective date.

Summary

The rule officially sets the start date for a change to the list of nuclear‑fuel storage containers that the Nuclear Regulatory Commission (NRC) has approved. It adds Amendment 10 to the Certificate of Compliance for Holtec International’s HI‑STORM Flood/Wind System, a cask designed to keep used nuclear fuel safe from flooding and wind damage. By updating the list, the NRC ensures that the most current safety analyses are reflected in the devices that can be used at nuclear sites. The NRC, the federal agency that oversees nuclear safety, issued the rule. It mainly affects nuclear power plant operators, utilities, and other organizations that store spent fuel, as well as the manufacturers of the HI‑STORM casks. Those entities must use the newly approved amendment when they rely on this specific storage system. The amendment was first published in the Federal Register on July 23 2026 and the NRC confirmed that it will become effective on October 6 2026. Because the rule is a “direct final” action, no additional comment period is required; the amendment is now part of the official list, and facilities can begin using the updated HI‑STORM Flood/Wind System under the new certification.

AI-generated summary — verify against the Federal Register text.

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