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

Document 2025-06315 is a Final Rule published by the Nuclear Regulatory Commission in the Federal Register on April 14, 2025, with an effective date of May 13, 2025. The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of May 13, 2025, for the direct final rule that was published in the Federal Register on February 27, 2025. This direct final rule amended the NAC International, Inc. Multi-Purpose Canister System listing within the "List of approved spent fuel storage casks" to include Amendment No. 9 and revisions to Amendment Nos. 6, 7, and 8 to Certificate of Compliance No. 1025. View the original at https://www.federalregister.gov/documents/2025/04/14/2025-06315/list-of-approved-spent-fuel-storage-casks-nac-multi-purpose-canister-nac-mpc-system-certificate-of.

No. Document 2025-06315 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.