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
Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register July 1, 2026. Document 2026-13261. Updated Nov. 9, 2026.
- What it does
The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its spent fuel storage regulations by revising the NAC International, Inc. (NAC) MAGNASTOR[supreg] System listing within the "List of approved spent fuel storage casks" to include Amendment Nos. 16 and 17 and revisions to Amendment Nos. 0 through 16 to Certificate of Compliance (CoC) No. 1031. Amendment No. 16 revises the CoC to permit alternate methods for determining the free volume inside a loaded canister and for measuring helium to ensure that Technical Specification limits are met. It also clarifies that mixed loadings of different assembly types or subtypes within a single Transportable Storage Cask are acceptable. Amendment No. 17 and revisions to Amendment Nos. 0 through 16 revise the CoC to incorporate changes to the design basis for the MAGNASTOR[supreg] storage system to correct an error with M5 fuel cladding material yield strength that was introduced in CoC No. 1031, Amendment No. 14 and the associated revisions to Amendment Nos. 0 through 13.
The Nuclear Regulatory Commission's summary, as published in the Federal Register.
- What it would change
1 part of Title 10 of the Code of Federal Regulations:
- Before this
1 earlier Federal Register document under regulation identifier 3150-AL68 since Jan. 1, 2025.
Since then:
- What happens next and when
Submit comments by July 31, 2026. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration of only comments received on or before this date.
The agency's dates, word for word.
The record as published
| Document number | 2026-13261 |
|---|---|
| Action | Proposed rule. |
| Agencies | Nuclear Regulatory Commission |
| Published | July 1, 2026 |
| Comments close | July 31, 2026 |
| Regulation identifier (RIN) | 3150-AL68 |
| Docket | NRC-2026-2047 |
Source: the Federal Register (public domain). The document in the Federal Register