Federal Register #NRC-2026-2047

NRC Regulatory Amendment for NAC MAGNASTOR Spent Fuel Storage System

This opportunity involves a regulatory amendment by the U.S. Nuclear Regulatory Commission (NRC) concerning spent fuel storage systems: - Government Buyer: - U.S. Nuclear Regulatory Commission (NRC) - Office of Nuclear Material Safety and Safeguards - OEM Highlight: - NAC International, Inc. is the sole Original Equipment Manufacturer (OEM) referenced - Products/Systems Affected: - MAGNASTOR Storage System (Certificate of Compliance No. 1031) - Amendments Nos. 16 and 17, plus revisions to Amendments 0 through 16 - Key Technical Changes: - Alternate methods permitted for determining free volume and helium measurement inside loaded canisters - Mixed loadings of different assembly types or subtypes allowed within a single Transportable Storage Canister (TSC) - Correction of M5 fuel cladding material yield strength error from previous amendment - Notable Requirements: - No procurement of products or services; this is a regulatory update - Safety and environmental standards maintained - No specific part numbers, quantities, or purchase requests are included - Effective period for amendments begins upon regulatory activation and extends to certificate expiration

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 previous amendments correct an error with M5 fuel cladding material yield strength introduced in Amendment No. 14 and associated revisions.

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