ML25231A253

0. User Need Memo for Certificate of Compliance No. 1042, Amendment No. 5 for the NUHOMS Eos System

ML25231A253
Person / Time
Site:	07201042
Issue date:	09/15/2025
From:	Yoira Diaz-Sanabria Storage and Transportation Licensing Branch
To:	James Shepherd NRC/NMSS/DREFS/MRPB
Shared Package
ML25231A252	List: ML25231A253 ML25231A254 ML25231A255 ML25231A256
References
CAC 001028, EPID L-2024-LLA-0143
Download: ML25231A253 (1)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 MEMORANDUM TO:

Jill Shepherd, Chief Materials Rulemaking and Project Management Branch Division of Rulemaking, Environmental, and Financial Support, Office of Nuclear Material Safety and Safeguards FROM:

Yoira Diaz-Sanabria, Chief Storage and Transportation Licensing Branch Division of Fuel Management, Office of Nuclear Material Safety and Safeguards

SUBJECT:

USER NEED FOR RULEMAKING FOR THE NUHOMS EXTENDED OPTIMIZED STORAGE DRY SPENT FUEL STORAGE SYSTEM CERTIFICATE OF COMPLIANCE NO.

1042, AMENDMENT NO. 5 The purpose of this communication is to request support for rulemaking activities in the Division of Fuel Management (DFM) for the following Title 10 of the Code of Federal Regulations (10 CFR) Part 72 licensing action:

1.

Changes to 10 CFR 72.214 rule text (changes appear in bold):

Certificate Number: 1042.

Initial Certificate Effective Date: June 7, 2017.

Amendment Number 1 Effective Date: June 17, 2020.

Amendment Number 2 Effective Date: October 26, 2021.

Amendment Number 3 Effective Date: July 17, 2023.

Amendment Number 4 Effective Date: October 14, 2025 Amendment Number 5 Effective Date: TBD [insert 75 days from date of Federal Register publication].

SAR Submitted by: TN Americas LLC.

SAR

Title:

Final Safety Analysis Report for the NUHOMS EOS Dry Spent Fuel Storage System.

Docket Number: 72-1042.

Certificate Expiration Date: June 7, 2037.

Model Number: EOS-37PTH, -89BTH, and 61BTH Type 2 DSCs CONTACT: Haimanot Yilma, NMSS/DFM 301-287-9070 September 15, 2025 Signed by Diaz-Sanabria, Yoira on 09/15/25

J. Shepherd 2.

By letter dated February 26, 2025 (Agencywide Documents Access and Management System [ADAMS] Accession No. ML25057A456), as supplemented on August 28, 2025 (ML25240B483), TN Americas LLC requested that the U.S. Nuclear Regulatory Commission amend the Certificate of Compliance (CoC) No. 1042 to include the following changes:

Change No. 1:

Addition of a new heat load zone configuration (HLZC) for the EOS-37PTH, HLZC 14, which allows an increase in the maximum heat load of the EOS-37PTH to 54 kW per dry shielded canister (DSC) for storage in the EOS-Horizontal Storage Module (HSM) and transfer operations in the EOS-Transfer Casks (TC)125/135. HLZC 14 is only permitted in Basket Type 4HA introduced in Amendment No. 4 to CoC No. 1042 with anodized aluminum. No physical changes are considered for this basket type in this application.

An optional support spacer is considered for the flat plate support variant of EOS-Horizontal Storage Module (HSM) as described in the application (EOS-HSM-FPS).

Change No. 2:

Editorial corrections are included as part of this amendment application:

o Section 2.4.2.1 of the updated final safety analysis report (UFSAR) has been revised to clarify that the heat load for any single assembly is 4.3 kW for the EOS-37PTH DSC. This is an editorial correction based on HLZC 12 included as part of application for Amendment No. 4 to CoC No. 1042.

o Note 3 of figure 2-3m (Heat Load Zone Configuration 13 for the EOS-37PTH DSC) has been revised to enhance readability.

o Technical specification (TS) figures 1A and 1J have been revised to clarify the location of HLZC 1 and 10 for EOS-37PTH. For figure 1A, a note was added to indicate HLZC 1 is now described in UFSAR chapter 2, figure 2-3a. For figure 1J, a note was added to indicate HLZC 10 is now described in the UFSAR chapter 2, figure 2-3j.

o TS section 4.4.4 - Alternatives to Codes and Standards, under the table column Justification and Compensatory Measures for reference ASME code section NB-5520 be revised to invoke Table NCA-7100-2, as opposed to the current listing of NCA-7000-1.

Change No. 3:

Clarification regarding acceptance criteria for minor surface imperfections on high-strength low-alloy (HSLA) basket plates within the UFSAR.

The propose CoC, TS, and preliminary safety evaluation report have been placed in ADAMS (see references below) and are available for your use in the rulemaking package.

J. Shepherd DFM will designate these documents as Official Agency Records after the Executive Director for Operations has approved the package (ML25231A252).

Docket No. 72-1042 CAC No. 001028 EPID: L-2024-LLA-0143 ADAMS

References:

1. Proposed CoC No. 1042, Amendment No. 5 (ML25231A254)

2. Proposed TS (ML25231A255)

3. PSER (ML25231A256)

ML25231A252 (pkg), ML25231A253 (memo),

ML25231A254 (CoC), ML25231A255 (TS), ML25231A256 (PSER)

OFFICE NMSS/DFM NMSS/DFM NMSS/DFM NMSS/DFM NAME HYilma YChen ASotomayor-Rivera JSolis DATE 8/20/2025 8/22/2025 8/22/2025 8/25/2025 OFFICE NMSS/DFM NMSS/DFM NMSS/DFM NMSS/DFM NAME ADjapari YKim DDunn WWheatley DATE 8/26/2025 8/26/2025 8/27/2025 9/8/2025 OFFICE NMSS/DFM NMSS/DFM NMSS/DFM NMSS/DFM NAME DJohnson LRegner JPiotter GGeorge DATE 9/8/2025 9/9/2025 9/11/2025 9/11/2025 OFFICE NMSS/DFM NMSS/DFM NAME HYilma YDiaz-Sanabria DATE 9/11/2025 9/15/2025