# List of Approved Spent Fuel Storage Casks: NAC Multi-Purpose Canister (NAC-MPC) System, Certificate of Compliance No. 1025, Amendment No. 9, and Revision to Amendment Nos. 6, 7, and 8
> **Nuclear Regulatory Commission** · Direct final rule. · Published 2025-02-27 · Effective 2025-05-13 · 90 FR 10781
## Document
- **Document number:** 2025-03091
- **Category:** nuclear-waste
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 90 FR 10781
- **CFR reference:** 10 CFR 72
- **Publication date:** 2025-02-27
- **Effective date:** 2025-05-13
- **Energy docket:** NRC-2024-0200
## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the NAC Multi-Purpose Canister (NAC-MPC) System listing within the "List of approved spent fuel storage casks" to include Amendment No. 9 and revise Amendment Nos. 6, 7, and 8 to Certificate of Compliance (CoC) No. 1025. The addition of Amendment No. 9 and the revisions to Amendment Nos. 6, 7, and 8 amend the description of the vertical concrete cask (VCC) in the CoC and technical specifications to make a distinction between the VCC body and the VCC lid, in terms of applicability of the American Concrete Institute (ACI) Specifications ACI 349 and ACI 318.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/02/27/2025-03091/list-of-approved-spent-fuel-storage-casks-nac-multi-purpose-canister-nac-mpc-system-certificate-of)
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