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

What it does

The U.S. Nuclear Regulatory Commission (NRC) is amending its spent fuel storage regulations by revising the TN Americas LLC, NUHOMS[supreg] 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 revises the CoC to add a new heat load zone configuration (HLZC) for the EOS-37PTH canister, increasing the maximum heat load to 54 kW per dry shielded canister (DSC) for storage in the EOS-Horizontal Storage Module (HSM) and transfer using EOS-Transfer Casks (TC)125/135; clarifies acceptance criteria for minor surface imperfections on high strength low-alloy (HSLA) basket plates in the Updated Final Safety Analysis Report (UFSAR); and makes editorial updates to the UFSAR and Technical Specification (TS) revisions to align with Amendment No. 4, improve readability, and correct code references.

The Nuclear Regulatory Commission's summary, as published in the Federal Register.

What changed in the regulation

1 part of Title 10 of the Code of Federal Regulations:

10 CFR 72

Wording on eCFR: the day before it took effect and from the day it took effect (first part listed).

Compared with

The Nuclear Regulatory Commission has published 34 final rules in 2026 so far, compared with 28 in all of 2025.

Counted by the Tribune from Federal Register records since Jan. 1, 2025.

Before this

1 earlier Federal Register document under regulation identifier 3150-AL55 since Jan. 1, 2025.

• Jan. 28, 2026 Proposed rule. 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

Since then:

• March 18, 2026 Direct final rule; confirmation of effective date. 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

What happens next and when

This direct final rule is effective April 13, 2026, unless significant adverse comments are received by February 27, 2026. If this direct final rule is withdrawn as a result of such comments, timely notice of the withdrawal will be published in the Federal Register. 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. Comments received on this direct final rule will also be considered to be comments on a companion proposed rule published in the Proposed Rules section of this issue of the Federal Register.

The agency's dates, word for word.

Check it yourself

• The document in the Federal Register
• Docket NRC-2025-1369 on Regulations.gov
• Title 10 on eCFR

The record as published

Source: the Federal Register (public domain). The document in the Federal Register