Federal Register #CoC No. 1031

NRC Regulatory Amendment for NAC International MAGNASTOR Spent Fuel Storage Casks

The U.S. Nuclear Regulatory Commission (NRC) is updating its regulations for spent nuclear 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 Original Equipment Manufacturer (OEM) for the MAGNASTOR Storage System - Products/Systems Involved: - MAGNASTOR Storage System (Certificate of Compliance No. 1031) - Amendments Nos. 16 and 17, and revisions to Amendments 0 through 16 - Key Technical Updates: - Permits alternate methods for determining free volume and measuring helium inside loaded canisters - Allows mixed loadings of different assembly types or subtypes within a single Transportable Storage Canister (TSC) - Corrects the design basis for M5 fuel cladding material yield strength - Notable Requirements: - Licensees may load spent nuclear fuel into MAGNASTOR casks that meet the updated criteria - No specific purchase quantities or part numbers are provided, as this is a regulatory amendment - No direct procurement of products or services is specified; this action enables use of updated MAGNASTOR casks under revised compliance rules

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 through 16 incorporate changes to the design basis for the MAGNASTOR storage system to correct an error with M5 fuel cladding material yield strength introduced in Amendment No. 14.

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