# List of Approved Spent Fuel Storage Casks: NAC International, Inc., NAC-UMS® Universal Storage System, Certificate of Compliance No. 1015, Renewed Amendment No. 10, and Revision 1 to Renewed Amendment Nos. 5 Through 9
> **Nuclear Regulatory Commission** · Direct final rule. · Published 2025-12-08 · Effective 2026-02-23 · 90 FR 56657
## Document
- **Document number:** 2025-22229
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 90 FR 56657
- **CFR reference:** 10 CFR 72
- **Publication date:** 2025-12-08
- **Effective date:** 2026-02-23
- **Energy docket:** NRC-2025-0025
## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel regulations by revising the NAC International, Inc., NAC- UMS[supreg] Universal Storage System (NAC-UMS[supreg]) design listing within the "List of approved spent fuel storage casks" to include Renewed Amendment No. 10, and to revise Renewed Amendment Nos. 5 through 9 to Certificate of Compliance No. 1015. The addition of Renewed Amendment No. 10 and Revision 1 to Renewed Amendment Nos. 5 through 9 for the certificate of compliance (CoC) corrects licensing basis deficiencies and updates the address in the CoC to reflect the new address of the applicant's headquarters offices.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/12/08/2025-22229/list-of-approved-spent-fuel-storage-casks-nac-international-inc-nac-ums-universal-storage-system)
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