NUCLEAR REGULATORY COMMISSION
<CFR>10 CFR Part 72</CFR>
<DEPDOC>[NRC-2025-1369]</DEPDOC>
<RIN>RIN 3150-AL55</RIN>
<SUBJECT>List of Approved Spent Fuel Storage Casks: TN Americas LLC, NUHOMS® EOS Dry Spent Fuel Storage System, Certificate of Compliance No. 1042, Amendment No. 5</SUBJECT>
<HD SOURCE="HED">AGENCY:</HD>
Nuclear Regulatory Commission.
<HD SOURCE="HED">ACTION:</HD>
Proposed rule.
<SUM>
<HD SOURCE="HED">SUMMARY:</HD>
The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its spent fuel storage regulations by revising the TN Americas LLC, NUHOMS® Extended Optimized Storage (EOS) Dry Spent Fuel Storage System listing within the “List of approved spent fuel storage casks” to include Amendment No. 5 to Certificate of Compliance (CoC) No. 1042. Amendment No. 5 would revise the CoC to add a new heat load zone configuration for the EOS-37PTH canister, increasing the maximum heat load to 54 kW per dry shielded canister for storage in the EOS-Horizontal Storage Module and transfer using EOS-Transfer Casks TC125/135; clarify acceptance criteria for minor surface imperfections on high strength low-alloy basket plates in the Updated Final Safety Analysis Report (UFSAR); and make editorial updates to the UFSAR and Technical Specification revisions to align with Amendment No. 4, improve readability, and correct code references.
</SUM>
<EFFDATE>
<HD SOURCE="HED">DATES:</HD>
Submit comments by February 27, 2026. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration of only comments received on or before this date.
</EFFDATE>
<HD SOURCE="HED">ADDRESSES:</HD>
Submit your comments, identified by Docket ID NRC-2025-1369, at
<E T="03">https://www.regulations.gov.</E>
If your material cannot be submitted using
<E T="03">https://www.regulations.gov,</E>
call or email the individual listed in the
<E T="02">FOR FURTHER INFORMATION CONTACT</E>
section of t
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