2025-02742RuleWallet

NRC Greenlights Nuclear Waste Cask Upgrades for Safer Storage

Published Date: 2/18/2025

Rule

Summary

The Nuclear Regulatory Commission is confirming that changes to the NAC International MAGNASTOR spent fuel storage system will take effect on March 19, 2025. These updates include a new Amendment No. 14 and revisions to previous amendments, ensuring safer and more efficient storage of nuclear fuel. This affects companies using these storage casks and helps keep nuclear waste management up to date without extra costs.

Analyzed Economic Effects

5 provisions identified: 5 benefits, 0 costs, 0 mixed.

Certificate No. 1031 Changes Take Effect

If your company uses the NAC International MAGNASTOR spent fuel storage system, Amendment No. 14 and revisions to Amendment Nos. 0 through 13 to Certificate of Compliance No. 1031 become effective on March 19, 2025. The NRC confirmed this effective date in a direct final rule published January 3, 2025.

New Tipover Evaluation Method Added

The Certificate of Compliance No. 1031 is revised to add a revised method of evaluation for the non-mechanistic tipover accident, effective March 19, 2025. This change updates how tipover risks are evaluated for the MAGNASTOR system.

Grid Spacer Rule Narrowed to PWR Fuel

The technical specifications were clarified to state that rules about damaged or missing grid spacers apply only to pressurized-water reactor (PWR) fuel assemblies, effective March 19, 2025. This narrows applicability of that specific requirement in Certificate No. 1031.

Vent Blockage and Surveillance Clarified

Appendix A to Certificate of Compliance No. 1031 was revised to clarify inlet and outlet vent blockage and surveillance requirements in Limiting Condition for Operation 3.1.2, effective March 19, 2025. The change explains how vent blockage and surveillance are to be treated in the technical specifications.

Reference to Type II Portland Cement Removed

The description in Certificate of Compliance No. 1031 was revised to remove the reference to Type II Portland cement, with the revision taking effect March 19, 2025. The certificate text no longer includes that cement type reference.

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Key Dates

Published Date
Rule Effective
2/18/2025
3/19/2025

Department and Agencies

Department
Independent Agency
Agency
Nuclear Regulatory Commission
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