Nuclear Cask Upgrades Proposed: Public Comments Welcome on Holtec Designs
Published Date: 4/2/2026
Proposed Rule
Summary
The Nuclear Regulatory Commission is updating the approved list for Holtec’s HI-STORM UMAX spent fuel storage system by adding two new design versions, B1 and B2. This change affects nuclear plants using these storage casks and opens a comment period until May 4, 2026. No immediate costs are expected, but the update helps keep nuclear waste storage safe and up to date.
No Economic Impacts Identified for this Document
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