# List of Approved Spent Fuel Storage Casks: Holtec International HI-STORM UMAX Canister Storage System, Certificate of Compliance No. 1040, Amendment No. 5
> **Nuclear Regulatory Commission** · Direct final rule; confirmation of effective date. · Published 2026-06-01 · Effective 2026-06-16 · 91 FR 32324
## Document
- **Document number:** 2026-10935
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 91 FR 32324
- **CFR reference:** 10 CFR 72
- **Publication date:** 2026-06-01
- **Effective date:** 2026-06-16
- **Energy docket:** NRC-2026-0562
## 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.

## Source
- [Federal Register document](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)
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