ML25085A290

Summary of Public Meeting to Discuss Sections of the National Organization of Test, Research and Training Reactors, Inc. Proposed NEI 23-03 Guidance on 50.59 Process for Digital Applications

ML25085A290
Person / Time
Issue date:	03/27/2025
From:	Duane Hardesty NRC/NRR/DANU/UNPL
To:	Holly Cruz Office of Nuclear Reactor Regulation
References
EPID L-2023-NFG-0002
Download: ML25085A290 (1)

Text

MEMORANDUM TO:

Holly D. Cruz, Branch Chief Non-Power Production and Utilization Facility Licensing Branch Division of Advanced Reactors and Non-Power Production and Utilization Facilities Office of Nuclear Reactor Regulation FROM:

Duane A. Hardesty, Senior Project Manager Non-Power Production and Utilization Facility Licensing Branch Division of Advanced Reactors and Non-power Production and Utilization Facilities Office of Nuclear Reactor Regulation

SUMMARY

OF MARCH 25, 2025, PUBLIC MEETING TO DISCUSS SECTIONS OF THE NATIONAL ORGANIZATION OF TEST, RESEARCH AND TRAINING REACTORS, INC. PROPOSED NEI 23-03 GUIDANCE ON THE 50.59 PROCESS FOR DIGITAL APPLICATIONS (EPID: L-2023-NFG-0002)

On March 4, 2025, (Agencywide Documents Access and Management System Accession No. ML25063A267), the U.S. Nuclear Regulatory Commission (NRC) staff held a public meeting with the National Organization of Test, Research, and Training Reactors (TRTR) staff to continue to discuss endorsement of Nuclear Energy Institute (NEI) 23-03, Guidance on the 50.59 Process for Digital Applications. A list of attendees is provided as an enclosure to this memorandum.

During the meeting, NRC and TRTR representatives reviewed and implemented changes in response to NRC staff comments on NEI 23-03 guidance. Changes were made to Section 4.3.1 which included changing mentions of software failure to failure due to software to more specifically express that while a software may not fail, it may fail to perform as intended. This change was also proposed in Example 4-17, which is still under review by representatives of TRTR. Additionally, the NRC staff recommended modifying Example 4-17 and 4-18 to better reflect the discussion of activities that may result in a more than minimal increase in the likelihood of occurrence of a malfunction of an structure, system, or component (SSC) important to safety previously evaluated in the Updated Final Safety Analysis Report (UFSAR) to better consider potential SSC failures for digital modifications and considerations made when determining the effect on the likelihood of any malfunctions as the result of digital modifications.

CONTACT:

Duane A. Hardesty, NRR/DANU 301-415-3724 March 27, 2025 Signed by Hardesty, Duan on 03/27/25

H. Cruz Participants in the meeting also engaged in significant discussion of principle design criteria (PDC) to ensure a common understanding of the regulatory requirements and how the PDCs (as described in the FSAR) impact 10 CFR 50.59 evaluations.

Representatives scheduled the next meeting for April 15,2025, to review NRC comments on Example 4-17, Section 4.3.3, and Section 4.3.4. There were no members of the public present in the meeting

Enclosure:

As stated

H. Cruz

SUMMARY

OF MARCH 25, 2025, PUBLIC MEETING TO DISCUSS SECTIONS OF THE NATIONAL ORGANIZATION OF TEST, RESEARCH AND TRAINING REACTORS, INC. PROPOSED NEI 23-03 GUIDANCE ON THE 50.59 PROCESS FOR DIGITAL APPLICATIONS (EPID: L-2023-NFG-0002)

DATED: MARCH 27, 2025 DISTRIBUTION:

PUBLIC HCruz, NRR DBeaulieu, NRR NCarte, NRR DHardesty, NRR BStamler, NRR AMiller, NRR AWaugh, NRR IWang, OCHCO JNadel, NRR KSmetana, RGN I RidsNrrDanu ADAMS Accession Number: ML25085A290 NRR-001 OFFICE NRR/DANU/UNPL/PM NRR/DANU/UNPL/PM NRR/DANU/UNPL/BC NAME BStamler DHardesty HCruz DATE 3/26/2025 3/26/2025 3/27/2025 OFFICE NRR/DANU/UNPL/PM NAME DHardesty DATE 3/27/2025 OFFICIAL RECORD COPY

Enclosure MEETING WITH NATIONAL ORGANIZATION FOR TEST, RESEARCH, AND TRAINING REACTORS March 25, 2025, 10:00 A.M. - 12:00 P.M.

LIST OF ATTENDEES Name Organization Duane Hardesty U.S. Nuclear Regulatory Commission Bradley Stamler U.S. Nuclear Regulatory Commission Andrew Miller U.S. Nuclear Regulatory Commission Andrew Waugh U.S. Nuclear Regulatory Commission Isaac Wang U.S. Nuclear Regulatory Commission Jared Nadel U.S. Nuclear Regulatory Commission Kris Smetana U.S. Nuclear Regulatory Commission Norbert Carte U.S. Nuclear Regulatory Commission David Beaulieu U.S. Nuclear Regulatory Commission Andrew Smolinski Armed Forces Radiobiology Research Institute Deric Tilson Breakthrough Institute Jeffrey Geuther Pennsylvania State University Mike Melton Zetta-Joule Thomas Newton National Institute of Standards & Technology Frances Pimentel Nuclear Energy Institute Steven Reese Oregon State University Ryan Marcum I&C Operative Thomas Byrne Excel Services Mary Miller Dominion Energy