ML25086A069

Request for Holtec International Hi-Storm FW MPC Storage System Amendment No. 10 - Accepted for Review

ML25086A069
Person / Time
Site:	07201032
Issue date:	04/03/2025
From:	Janice Nguyen Storage and Transportation Licensing Branch
To:	Manzione K Holtec
References
Certificate No.: 1032, EPID L-2025-LLA-0056, CAC 001028
Download: ML25086A069 (1)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Kimberly Manzione, Director of Licensing Holtec International Holtec Technology Campus 1 Holtec Blvd Camden, NJ 08104

SUBJECT:

REQUEST FOR HOLTEC INTERNATIONAL HI-STORM FLOOD AND WIND MULTI-PURPOSE CANISTER STORAGE SYSTEM AMENDMENT NO. 10 -

ACCEPTED FOR REVIEW - COST ACTIVITY CODE/ENTERPRISE PROJECT IDENTIFICATION NOS. 001028/L-2025-LLA-0056

Dear Kimberly Manzione:

By letter dated March 1, 2024 (Agencywide Documents Access and Management System

[ADAMS] Accession No. ML24109A249), as supplemented on September 16, 2024 (ML24260A280), December 12, 2024 (ML24348A143), and February 28, 2025 (ML25062A248),

you submitted an application to the U.S. Nuclear Regulatory Commission (NRC) for the amendment of the HI-STORM Flood and Wind (FW) Multi-Purpose Canister (MPC) Cask Storage System certificate of compliance (CoC). In your application you requested that the NRC amend the CoC with the following changes:

Introduce the HI-STORM FW Extended Configuration. This version of the HI-STORM FW system is an anchored configuration that allows storage of two MPCs stored vertically within a specially designed system of two storage overpacks.

Incorporation of a methodology to develop site specific loading patterns in chapter 4 of the HI-STORM FW final safety analysis report (FSAR) and inclusion of higher maximum per canister and per cell limits for those patterns.

Incorporation of the Topical Report on the Radiological Fuel Qualification Methodology for Dry Storage Systems, Holtec Report HI-2210161-A. Related details and requirements are specified in the new appendix B to chapter 5 of the FSAR.

Reduced MPC-44 minimum cooling time from 3 years to 1 year, and MPC-37P minimum cooling time from 1.6 years to 1 year.

Revise the FSAR methodology for HI-TRAC VW missile penetration to allow site-specific analysis to take credit for the HI-TRAC VW water jacket shell.

Minor editorial change to the CoC by updating the MPC-89 Maximum Fuel Assembly Length in table 2.1-1 to 181.5 inches.

We have completed the acceptance review of your application and determined that it contains sufficient technical information in scope and depth. Therefore, your application has been accepted for detailed technical review. Your application has been assigned Cost Activity Code No./Enterprise Project Identification No. 001028/L-2025-LLA-0056. Please reference these numbers and Docket No. 72-1032 in future correspondence associated with this request.

April 3, 2025

K. Manzione 2

Please note that the NRC staffs technical review of your submittal may identify issues that could require that you provide additional information. Based on our preliminary evaluation and projection of current review schedules, we anticipate completing our formal review by May 2026.

The schedule includes the issuance, if needed, of a request for additional information (RAI) by the end of August 2025, and, if no additional information is needed, a draft CoC and safety evaluation report for rulemaking by the end of May 2026, based on you responding to the RAI by late November 2025. Please note that these dates could change depending on the findings of our technical review, urgent assignments, or other factors, such as whether your responses to the RAI are or not adequate. The NRC staff estimates that completing the review of your submittal will require approximately 1180 staff hours which corresponds to about $375,000. We will promptly communicate significant schedule and/or cost changes, if any.

In accordance with 10 CFR Part 2, Agency Rules of Practice and Procedure, a copy of this letter will be available electronically for public inspection in the NRC Public Document Room (PDR) or from the Publicly Available Records component of the NRCs ADAMS. ADAMS is accessible from the NRC website at http://www.nrc.gov/reading-rm/adams.html. The PDR is open by appointment. To make an appointment to visit the PDR, please send an email to PDR.Resource@nrc.gov or call 1-800-397-4209 or 301-415-4737, between 8 a.m. and 4 p.m.

eastern time (ET), Monday through Friday, except Federal holidays.

If you have any questions regarding this communication, please contact me at 301-415-0262, or via email to john-chau.nguyen@nrc.gov.

Sincerely, John-Chau Nguyen, Senior Project Manager Storage and Transportation Licensing Branch Division of Fuel Management Office of Nuclear Material Safety and Safeguards Docket No.: 72-1032 CoC No.: 1032 CAC No.: 001028 EPID No.: L-2025-LLA-0056 Signed by Nguyen, Chau on 04/03/25

ML25086A069 OFFICE NMSS/DFM NMSS/DFM NMSS/DFM NMSS/DFM NMSS/DFM NAME JNguyen WWheatley JNguyen YDiaz-Sanabria JNguyen DATE 3/27/2025 3/28/2025 3/28/2025 4/3/2025 4/3/2025