List of Approved Spent Fuel Storage Casks: TN Americas, LLC: Standardized NUHOMS® Horizontal Modular Storage System for Irradiated Nuclear Fuel, Certificate of Compliance No. 1004, Renewed Amendment No. 19
Key claim: The Nuclear Regulatory Commission confirmed November 9, 2026, as the effective date approving an updated staggered-plate basket design for TN Americas’ Standardized NUHOMS spent nuclear fuel storage casks.
Abstract
(Rule · Nuclear Regulatory Commission) The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of November 9, 2026, for the direct final rule that was published in the Federal Register on August 26, 2026. This direct final rule amended the TN Americas, LLC Standardized NUHOMS[supreg] Horizontal Modular Storage System for Irradiated Nuclear Fuel listing within the “List of approved spent fuel storage casks” to include Amendment No. 19 to Certificate of Compliance No. 1004. Amendment No. 19 revises the certificate of compliance to provide for a 61BTH improved basket design using staggered plates similar the 24PTH Type 3 basket approved in CoC 1004 Amendment 18 and similar to the EOS 37PTH and 89BTH baskets approved in CoC 1042. This will simplify construction, reduce weight and improve fabricability. Additional changes are proposed to address editorial corrections, consistency, and terminology clarifications.
Why this matters
The confirmation establishes when the updated basket design becomes an approved option for the existing NUHOMS spent-fuel storage system, moving the amendment beyond the previously logged proposal. The design was described as lighter and easier to fabricate, but this finding does not quantify cost savings or establish changes in health or environmental outcomes.