NRC Approves Updated HI-STORM UMAX Nuclear Storage Cask Design
Published Date: 6/1/2026
Rule
Summary
The Nuclear Regulatory Commission is officially approving an update to the Holtec International HI-STORM UMAX spent fuel storage system, effective June 16, 2026. This change affects nuclear plants using these storage casks by improving safety and technical specs without extra costs. Operators should be ready to follow the new rules starting mid-June.
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