Federal Register #NRC2026-2047

NRC Regulatory Amendments for NAC International MAGNASTOR Spent Fuel Storage System

This notice details regulatory amendments by the U.S. Nuclear Regulatory Commission (NRC) regarding spent fuel storage casks: - Government Buyer: - U.S. Nuclear Regulatory Commission (NRC) - Office of Nuclear Material Safety and Safeguards - OEM Highlight: - NAC International, Inc. is the sole OEM referenced - Products/Systems Involved: - MAGNASTOR Storage System (Certificate of Compliance No. 1031) - Amendments include Nos. 16 and 17, and revisions to Amendments 0 through 16 - Key Technical Updates: - Allows alternate methods for determining free volume inside loaded canisters - Permits alternate methods for measuring helium to ensure compliance with technical specifications - Clarifies that mixed loadings of different assembly types or subtypes within a single Transportable Storage Canister (TSC) are acceptable - Corrects a previous error in the design basis for M5 fuel cladding material yield strength - Notable Requirements: - No procurement of products or services is requested; this is a regulatory update - Amendments maintain safety and environmental standards for spent fuel storage - No specific part numbers, purchase quantities, or contract values are included, as this is not a solicitation or award

Description

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the NAC International, Inc. (NAC) MAGNASTOR System listing within the List of approved spent fuel storage casks to include Amendment Nos. 16 and 17 and revisions to Amendment Nos. 0 through 16 to Certificate of Compliance (CoC) No. 1031. Amendment No. 16 permits alternate methods for determining the free volume inside a loaded canister and for measuring helium to ensure Technical Specification limits are met, and clarifies that mixed loadings of different assembly types or subtypes within a single Transportable Storage Canister (TSC) are acceptable. Amendment No. 17 and revisions to Amendments 0-16 incorporate changes to the design basis to correct an error with M5 fuel cladding material yield strength introduced in Amendment No. 14.

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