# 2026-01842: List of Approved Spent Fuel Storage Casks: NAC International, Inc., NAC-UMS® Universal Storage System, Certificate of Compliance No. 1015, Amendment No. 10, and Revision 1 to Amendment Nos. 5 Through 9

2026-01842, List of Approved Spent Fuel Storage Casks: NAC International, Inc., NAC-UMS® Universal Storage System, Certificate of Compliance No. 1015, Amendment No. 10, and Revision 1 to Amendment Nos. 5 Through 9, is a Federal Register rule from Nuclear Regulatory Commission published 2026-01-30, effective 2026-02-23 (as of 2026-06-11).

- Canonical: https://policyrisk.com/federal-register/2026-01842
- As of: 2026-06-11
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-01842
- Title: List of Approved Spent Fuel Storage Casks: NAC International, Inc., NAC-UMS® Universal Storage System, Certificate of Compliance No. 1015, Amendment No. 10, and Revision 1 to Amendment Nos. 5 Through 9
- Type: Rule
- Agencies: Nuclear Regulatory Commission
- Citation: 91 FR 4006
- Published: 2026-01-30
- Effective: 2026-02-23
- Comments close: not stated
- Significant: no
- Touches household money: no
- Regulation identifier numbers: 3150-AL30
- Last updated: 2026-06-11

## Summary

The Nuclear Regulatory Commission is confirming that changes to the NAC-UMS® spent fuel storage system will take effect on February 23, 2026. These updates fix some licensing issues and update the company’s address, helping keep nuclear waste stored safely and smoothly. This affects companies using these storage casks but won’t cause extra costs or delays.

## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of February 23, 2026, for the direct final rule that was published in the Federal Register on December 8, 2025. This direct final rule amended the certificate of compliance (CoC) to correct licensing basis deficiencies and updated the address in the CoC to reflect the new address of the applicant's headquarters offices.

## Effects PRIA read

- Amendment Effective Date Confirmed: benefit, low. If your company uses the NAC-UMS spent fuel storage system (Certificate of Compliance No. 1015, Amendment No. 10, and Revision 1 to Amendment Nos. 5 through 9), the rule amending that certificate becomes effective on February 23, 2026. The direct final rule was published December 8, 2025 (90 FR 566…
- Licensing Fixes and Address Update: benefit, low. The amendment corrects licensing-basis deficiencies in the NAC-UMS spent fuel storage system and updates the applicant's headquarters address in the Certificate of Compliance. The NRC states these updates help keep spent fuel stored safely and smoothly and will not cause extra costs or delays.

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## Sources
- [2026-01842 on federalregister.gov](https://www.federalregister.gov/documents/2026/01/30/2026-01842/list-of-approved-spent-fuel-storage-casks-nac-international-inc-nac-ums-universal-storage-system)
- [2026-01842 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-01-30/pdf/2026-01842.pdf)

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Source: PRIA, https://policyrisk.com/federal-register/2026-01842 (as of 2026-06-11).