# 2026-13260 — Federal rules taking effect: every published US final rule whose effective date is still in the future

For 2026-13260, rule is 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; agency is Nuclear Regulatory Commission; effective date is 2026-09-14; dates, as printed is This direct final rule is effective September 14, 2026, unless significant adverse comments are received by July 31, 2026. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. Comments received on this direct final rule will also be considered to be comments on a companion proposed rule published in the Proposed Rules section of this issue of the Federal Register; cfr parts amended is 10 CFR 72, recorded from its source on 2026-08-10.

- **FR document number:** 2026-13260 _(verified: appears in the quote below)_
- **Rule:** 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 _(verified: appears in the quote below)_
- **Agency:** Nuclear Regulatory Commission _(verified: appears in the quote below)_
- **Effective date:** 2026-09-14 _(verified: appears in the quote below)_
- **DATES, as printed:** This direct final rule is effective September 14, 2026, unless significant adverse comments are received by July 31, 2026. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. Comments received on this direct final rule will also be considered to be comments on a companion proposed rule published in the Proposed Rules section of this issue of the Federal Register. _(verified: appears in the quote below)_
- **CFR parts amended:** 10 CFR 72 _(our reading, not quoted from the source)_
- **Published:** 2026-07-01 _(verified: appears in the quote below)_

## What the source says

> {"document_number":"2026-13260","title":"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","agency_names":["Nuclear Regulatory Commission"],"effective_on":"2026-09-14","dates":"This direct final rule is effective September 14, 2026, unless significant adverse comments are received by July 31, 2026. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date. Comments received on this direct final rule will also be considered to be comments on a companion proposed rule published in the Proposed Rules section of this issue of the Federal Register.","cfr_references":[{"chapter":null,"citation_url":null,"part":"72","title":10}],"publication_date":"2026-07-01","html_url":"https://www.federalregister.gov/documents/2026/07/01/2026-13260/list-of-approved-spent-fuel-storage-casks-nac-international-inc-magnastor-storage-system-certificate"}

## Source

- https://www.federalregister.gov/api/v1/documents.json?per_page=1000&order=oldest&conditions%5Btype%5D%5B%5D=RULE&conditions%5Beffective_date%5D%5Bgte%5D=2026-08-11&conditions%5Beffective_date%5D%5Blte%5D=2026-12-31&fields%5B%5D=document_number&fields%5B%5D=title&fields%5B%5D=agency_names&fields%5B%5D=effective_on&fields%5B%5D=dates&fields%5B%5D=cfr_references&fields%5B%5D=publication_date&fields%5B%5D=html_url

Last verified: 2026-08-10. Review by: 2026-08-24.
Part of [Federal rules taking effect: every published US final rule whose effective date is still in the future](https://referencesource.org/federal-rules-taking-effect/).