ML23059A002

January 25, 2023, Summary of Public Meeting to Discuss the Nuscale Us460 Standard Design Approval Density Wave Oscillations Topical Report Held

ML23059A002
Person / Time
Site:	05200050
Issue date:	02/09/2023
From:	David Drucker NRC/NRR/DNRL/NRLB
To:	Michael Dudek NRC/NRR/DNRL/NRLB
References
Download: ML23059A002 (1)

Text

March 9, 2023 MEMORANDUM TO:

Michael I. Dudek, Chief New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation FROM:

David Drucker, Senior Project Manager /RA/

New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation

SUMMARY

OF THE PUBLIC MEETING TO DISCUSS THE NUSCALE US460 STANDARD DESIGN APPROVAL DENSITY WAVE OSCILLATIONS TOPICAL REPORT HELD JANUARY 25, 2023 The U.S. Nuclear Regulatory Commission (NRC) staff held a virtual observation public teleconference on January 25, 2023, to discuss NuScale Power, LLC (NuScales), licensing topical report (LTR) titled Methodology for the Determination of the Onset of Density Wave Oscillations (DWO), TR-131981, Revision 0.

The meeting notice was posted on the NRC public website and can be found in the Agencywide Documents Access and Management System (ADAMS) Accession No. ML23017A229. The NuScale presentation can be found under ML23027A224 (Nonproprietary) and ML23027A226 (Proprietary). The enclosure provides a list of the meeting participants.

During the open portion of the meeting, NuScale provided a brief overview of the history of DWO and of the topics that would be discussed during the closed portion of the meeting. NuScale then continued with a summary of the DWO LTR contents and explained how the LTR fits within the full structure of the steam generator qualification program. The NRC staff and the public were given an opportunity to provide comments and ask questions. Edwin Lyman, Union of Concerned Scientists, asked if this LTR was part of the recently submitted US460 Standard Design Approval application (SDAA) or if it was separate from the SDAA and was intended to support a combined license applicant.

NRC staff stated that this topical review supports the SDAA. The public session of the meeting concluded at 11:30 a.m.

CONTACT: David Drucker, NRR/DNRL 301-415-6233

Following the open portion of the meeting, NuScales proprietary presentation focused on the following topics:

Licensing Approach Design and Operational Requirements Final Safety Analysis Report Features to Prevent and Mitigate Density Wave Oscillations Margin to Density Wave Oscillation Onset Steam Generator and Density Wave Oscillation Calculation Codes and Methods Topical Report Discussion Topical Report Table of Contents The NRC staff provided feedback throughout the presentation.

Docket No. 05200050

Enclosure:

List of Attendees cc w/encl.: NuScale DC Listserv

ML23059A002

• via email NRR-106 OFFICE DNRL/NRLB: PM DNRL/NLIB: LA DNRL/NRLB: PM NAME DDrucker*

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DATE 02/28/2023 02/28/2023 3/9/2023 OFFICE DNRL/NRLB: BC DNRL/NRLB: PM NAME MDudek*

DDrucker*

DATE 3/9/2023 03/9/2023

Enclosure U.S. NUCLEAR REGULATORY COMMISSION OBSERVATION PUBLIC TELECONFERENCE WITH NUSCALE POWER, LLC TO DISCUSS THE NUSCALE DENSITY WAVE OSCILLATIONS TOPICAL List of Attendees January 25, 2023 Note: All participated via teleconference.

Name Name Organization David Drucker Yuken Wong NRC Getachew Tesfaye Peter Lien Ricky Vivanco Kamal Manoly Bruce Bavol Antonio Barrett Stew Bailey Ryan Nolan Rebecca Patton Pete Yarsky Shanlai Lu Steve Bloom Gregory Makar Andy Johnson Leslie Terry Jim Osborn Hiral Kadakia NuScale Joe Remic Jeff Ehlers John Fields Kent Welter Andy Lingenfelter Kevin Spencer Brian Wolf Maggie Wang Erin Blumsack Patrick Byfield Hannah Rooks Richard Danforth Tim McDonald Robert Gamble Edwin Lyman Union of Concerned Scientists Charlyne Smith The Breakthrough Institute