List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5
§ 01 Summary
The NRC confirms that its April 2, 2026 direct final rule will take effect on June 16, 2026. That rule adds Amendment No. 5 to Holtec International’s HI-STORM UMAX Canister Storage System Certificate of Compliance No. 1040 in the NRC’s approved spent fuel storage cask list.
§ 02 Why this matters
The operative effect is to make effective an amendment to an NRC-approved spent fuel storage cask certificate, allowing use of the amended Holtec HI-STORM UMAX configuration under 10 CFR part 72. This is a specific technical approval rather than a broad new compliance regime.
§ 03 Topics
§ 04 Affected entities
- agency: Nuclear Regulatory Commission
- company: Holtec International
- industry: nuclear-power-operators
§ 05 Matching feeds
No active feeds matched this document. Create a custom watchlist on Pro to catch documents like this in real time.
§ 06 Source document
Read the full Federal Register entry on federalregister.gov.
Show classifier input (what GPT-5.5 saw)
Type: Rule Agencies: Nuclear Regulatory Commission Citation: 91 FR 32324 Title: List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5 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.
Classified Jun 2, 2026 by gpt-5.5. Fetched Jun 2, 2026.
Get this analysis on every relevant document.
Subscribe to a feed that watches your scope. RSS, JSON, email — all live or on roadmap.