ML23137A410

Amendment No. 3 to Certificate of Compliance No. 1042 for the Nuhoms Eos System (Docket No. 72-1042, CAC No. 001028, (Enterprise Project Identifier: L-2021-LLA-0055)

ML23137A410
Person / Time
Site:	07201042
Issue date:	06/08/2023
From:	Yoira Diaz-Sanabria Storage and Transportation Licensing Branch
To:	Narayanan P TN Americas LLC
Shared Package
ML23137A409	List: ML23137A410 ML23137A411 ML23137A412 ML23137A413
References
CAC 001028, EPID L-2021-LLA-0055
Download: ML23137A410 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 June 8, 2023 Prakash Narayanan Chief Technical Officer TN Americas LLC 7135 Minstrel Way, Suite 300 Columbia, MD 21045

SUBJECT:

AMENDMENT NO. 3 TO CERTIFICATE OF COMPLIANCE NO. 1042 FOR THE NUHOMS EOS SYSTEM (DOCKET NO. 72-1042, CAC NO. 001028, (ENTERPRISE PROJECT IDENTIFIER: L-2021-LLA-0055)

Dear Prakash Narayanan:

As requested by your application dated March 31, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession Number ML21102A281), as supplemented in letters dated June 23, 2021 (ML21174A231), August 4, 2021 (ML21209A098), September 3, 2021 (ML21246A136), October 22, 2021 (ML21295A260), November 30, 2021 (ML21334A206),

February 25, 2022 (ML22056A458), June 7, 2022 (ML22158A293), June 29, 2022 (ML22180A266), September 30, 2022 (ML22273A031), October 31, 2022 (ML22304A217),

November 14, 2022 (ML22318A205), and December 21, 2022 (ML22355A219), enclosed is Amendment No. 3 to Certificate of Compliance (CoC) No. 1042 for the NUHOMS EOS System.

The amended certificate constitutes the U.S. Nuclear Regulatory Commissions (NRC) approval for use of the NUHOMS EOS System for storage of spent nuclear fuel under the general licensing provisions of Title 10 of the Code of Federal Regulations Part 72, Subparts K and L, subject to the conditions in the amended certificate. This amendment revises the CoC for the NUHOMS EOS System to include the following changes:

Change No. 1:

Add three new heat load zone configurations (HLZCs) for the EOS-89BTH Dry Shielded Canister (DSC), with increased heat load up to 1.7 kW per fuel assembly, which reduces the minimum cooling time to 1 year.

Change No. 2:

Add a variable-lead thickness EOS-TC125 for transfer with the EOS-89BTH DSC.

Change No. 3:

Add ATRIUM 11 fuel as an allowable content in the EOS-89BTH DSC. Reran the limiting GNF2 and ABB-10-C cases to reduce the statistical uncertainties and increase the enrichment limits.

Change No. 4:

Update the criticality evaluation to allow short-loading the EOS-89BTH DSC with less than 89 fuel assemblies to increase the enrichment limits.

P. Narayanan Change No. 5:

For the technical specifications (TS); a revision to allow for phased array automated ultrasonic testing and to utilize a single pass high amperage gas tungsten arc weld (HA-GTAW) or multipass GTAW on the outer top cover plate.

Change No. 6:

For the TS; a revision to reduce EOS-37PTH HLZC 1 and 2 time limit for transfer to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />.

Change No. 7:

Incorporate a method to determine new loading patterns based on the maximum allowable heat load per DSC and per location specified in the TS. All HLZCs and time limits for transfer for the EOS-89BTH DSC transferred in the EOS-TC125 are moved from the TS to the updated final safety analysis report (UFSAR) chapter 2.

Change No. 8:

For the single bottom forging EOS-DSCs, waive the fabrication pressure test requirement.

Change No. 9:

TS and UFSAR changes for consistency among DSC types and terminology clarifications.

Additional Scope Change No. 1:

UFSAR revisions associated with transfer cask lifting heights and consideration of severe weather.

Additional Scope Change No. 2:

UFSAR revisions associated with maintaining water in the annulus.

Additional Scope Change No. 3:

Design changes to the Matrix Loading Crane.

P. Narayanan As stated in the Federal Register (88 FR 27397, May 2, 2023), the effective date of this CoC is July 17, 2023. The NRC safety evaluation report for this amended CoC (including the CoC itself and TS) is enclosed. If you have any questions regarding this amended certificate, please contact Christian Jacobs at (301) 415-6825.

Sincerely, Signed by Diaz-Sanabria, Yoira on 06/08/23 Yoira Diaz Sanabria, Chief Storage and Transportation Licensing Branch Division of Fuel Management Office of Nuclear Material Safety and Safeguards Docket No.: 72-1042 CAC No.: 001028 EPID: L-2021-LLA-0055

Enclosures:

1. Final CoC No. 1042, Amendment No. 3

2. Final Technical Specifications

3. Final Safety Evaluation Report

ML23137A409 (pkg), ML23137A410(Ltr), ML23137A411 (CoC),

ML23137A412 (TS), ML23137A413 (SER)

OFFICE: NMSS/DFM NMSS/DFM NMSS/DFM NAME: WWheatley CJacobs YDiazSanabria DATE: 05/22/2023 06/08/2023 06/08/2023