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{{#Wiki_filter:LO-135022 February 14, 2023                                                                                       Docket No. 52-050 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738
{{#Wiki_filter:LO-135022
 
February 14, 2023 Docket No. 52-050
 
U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738


==SUBJECT:==
==SUBJECT:==
NuScale Power, LLC Submittal of Presentation Materials Entitled US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)
NuScale Power, LLC Submittal of Presentation Materials Entitled US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)
The purpose of this submittal is to provide presentation materials to the NRC for use during the upcoming Advisory Committee on Reactor Safeguards (ACRS) NuScale Subcommittee Meeting on February 15, 2023. The materials support NuScales presentation of the US460 design and overview of the NuScale Standard Design Approval Application.
The purpose of this submittal is to provide presentation materials to the NRC for use during the upcoming Advisory Committee on Reactor Safeguards (ACRS) NuScale Subcommittee Meeting on February 15, 2023. The materials support NuScales presentation of the US460 design and overview of the NuScale Standard Design Approval Application.
The enclosure to this letter is the nonproprietary version of the presentation entitled US460 Design and SDAA Overview Update (Open Session).
The enclosure to this letter is the nonproprietary version of the presentation entitled US460 Design and SDAA Overview Update (Open Session).
This letter makes no regulatory commitments and no revisions to any existing regulatory commitments.
This letter makes no regulatory commitments and no revisions to any existing regulatory commitments.
If you have any questions, please contact Thomas Griffith at 541-452-7813 or tgriffith@nuscalepower.com.
If you have any questions, please contact Thomas Griffith at 541-452-7813 or tgriffith@nuscalepower.com.
Sincerely, Mark W. Shaver Acting Director, Regulatory Affairs NuScale Power, LLC Distribution:   Michael Dudek, NRC Getachew Tesfaye, NRC Bruce Bavol, NRC Mike Snodderly, NRC
 
Sincerely,
 
Mark W. Shaver Acting Director, Regulatory Affairs NuScale Power, LLC
 
Distribution: Michael Dudek, NRC Getachew Tesfaye, NRC Bruce Bavol, NRC Mike Snodderly, NRC


==Enclosure:==
==Enclosure:==
US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)
US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)
NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com


LO-135022
NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com LO-135022


==Enclosure:==
==Enclosure:==
US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)


US460 Design and SDAA Overview Update , PM-135236, Revision 0 (Open Session)
NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com}}
NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com
 
NuScale Nonproprietary 1
US460 Design and SDAA Overview Update ACRS Presentation (Open Session)
February 15th, 2023 Kristopher Cummings Licensing Engineer V Brian Meadors Chief Engineer, Regulatory Affairs Tom Griffith Licensing Manager, Acting - SDAA PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 2
Acknowledgement and Disclaimer This material is based upon work supported by the Department of Energy under Award Number DE-NE0008928.
This presentation was prepared as an account of work sponsored by an agency of the United States (U.S.)
Government. Neither the U.S. Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the U.S. Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the U.S. Government or any agency thereof.
PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 3
Agenda - Open Portion
* SDAA Content
* US460 Design Overview
* Topical and Technical reports PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 4
Why we are here and how did we get here?
* The SDA submittal is an engineering optimization of the NuScale DCA to allow for better customer use and deployment. The SDA maintains the approved technical and licensing basis from the DCA while maintaining the overall safety and risk profile.
High Level Design Changes
* Redesigned site layout to accommodate a 6 NPM configuration
* NPM optimized for increased power output; ease of maintenance, manufacturing and operation while maintaining safety margins:
o Steam generator was over designed for 160MWth application (DCA) and allows for increased power output while maintaining design limits o Additional testing has been performed to validate performance of NPM engineered safety features at an increased power level o Additional engineered safety features added to eliminate certain events and simplify Chapter 15 analysis
* Current evaluation of SDA design changes does not significantly alter the DCA PRA risk insights.
PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 5
Standard Design Approval (SDA) Application Content PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 6
SDA Application Content DESIGN CERTIFICATION              SDAA - Required by Regulation    SDAA - Needed to  Include as Part of SDAA APPLICATION PART (10 CFR 52 subpart B)                (10 CFR 52 subpart E)        Support COL              Submittal Transmittal Letter                                                          Yes                                Yes                    N/A                  Yes Part 1: General and Financial Information                    (financial info. Not required)      (financial info. Not required)        N/A                  Yes Part 2: Safety Analysis Report - Tier 1                                      Yes                                No                      No                    No Ch. 1 - Introduction                                                Yes                                No                      No                    No Ch. 2 - Unit Specific SSCs Design Descriptions                      Yes                                No                  ITAAC Only            ITAAC Only and ITAAC                                                                                                                                        (see Part 08)
Ch. 3 - Shared SSCs and Non-SSCs Design                            Yes                                No                  ITAAC Only            ITAAC Only Descriptions and ITAAC                                                                                                                            (see Part 08)
Ch. 4 - Interface Requirements                                      Yes                                No                      No                    No Ch. 5 - Site Parameters                                            Yes                                No                      No                    No (in FSAR Ch. 2)
Part 2: Safety Analysis Report - Tier 2                                      Yes                                Yes                    Yes                  Yes Part 3: Environmental Report                                                Yes                                No                      No                    No Part 4: Technical Specifications                                            Yes                                No                      Yes                  Yes Part 5: Emergency Plans                                Optional (Limited Scope) Not in NuScale                  No                      No                    No DCA Part 6: Security Plans                                  Optional (Limited Scope) Not in NuScale                  No                      No                    No DCA Part 7: Exemptions, Departures, and Variances                      Yes, if Applicable                  Yes, if Applicable              N/A            Yes - Exemptions Part 8: License Conditions; Inspections, Tests,            Yes, (ITAAC only) NuScale DCA                        No                Yes (only ITAAC)    Yes (only ITAAC)
Analyses and Acceptance Criteria                                references Part 2 Tier 1 Part 9: Withheld Information                            Yes, NuScale DCA provides list of tables                Yes                    N/A                  Yes and figures Part 10: Quality Assurance Program Description          Yes, NuScale DCA references separate                    Yes                    Yes                  Yes topical report Part 11: Supplemental Information                                    Yes, if applicable                          No                      No                    No (e.g., Limited Work Authorization)                              None for NuScale DCA Gold - differences from DCA                        Green - Included for COLA PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 7
US460 Design Changes PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 8
Site Design Changes
* Reduced footprint Balance of Site Equipment
* Dry cooling via air-cooled condensers                                                              Reactor Building
* Single (1x6) turbine building          Central Utilities Building o    Rather than two (2x3)    Control Building
* Conforming site layout changes            Annex Building Radwaste Building Turbine Building Onsite Warehouse Substation      Transmission Air-cooled Condensers Towers PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 9
Biological Reactor RXB Design Changes                                                                      Refueling    Building Shield Machine        Crane
* Six modules o    2x3 configuration Ground
* Reclassify seismic class of RXB                                    Surface o    Some floor and roof slabs are SC-II
* Steel plate composite walls (from reinforced concrete) o    Supported by the BDAM LTR
* Lower Pool Level o    Improves long term cooling, while still maintaining SFP and ECCS coverage. Allows room to re-arrange CNV penetrations.
* Reduction in sizes and quantities of SSC in RXB                                                              Reactor Reactor            Pool
* Conforming changes - i.e., RBC, Bioshield                                  Spent Fuel      Vessel NuScale Containment    Power Module Pool        Flange Tool
* COL Items for spent fuel storage racks, reactor flange                                                  Vessel tool.                                                                                              Flange Tool PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 10 Reactor Building Overhead View PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 11 NPM Design Changes
* Increased Power Level (250MWth from 160MWth)                                        steam line o    Includes conforming changes (e.g., pressures, temperatures)            feedwater line o Safety-related and risk significant containment vessel o Re-performing safety analyses in SDAA reactor vessel
* Lower RPV material change from SA-508 low alloy SS to FXM-19 austenitic SS                                                                    pressurizer o    No expected radiation embrittlement, allows removal of the RPV        support lug surveillance program steam generator
* Upper CNV Material change from SA-508 low alloy SS to F6NM martensitic SS                                                                    feedwater header o    Stronger material allows for higher design pressure with reduced wall thickness and no need for cladding reactor core module support skirt PM-135236 Rev. 0 Copyright © 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 12 Module Protection System Setpoints for Design Basis Events Setpoints with Changes  DCA      SDAA                                  Setpoints without Changes High Power (% RTP) [for <15% RTP]                          25 High Power (% RTP) [for 15% RTP]      120      115 Source and Intermediate Range Log Power Rate                3 High RCS Hot Temperature (&deg;F)          610      620              (decades per min)
High RCS Average Temperature (&deg;F)      N/A      555              High Power Rate (+/-% RTP per min)                          15 High Source Range Count Rate (counts per sec)          5.0E+05 High Pressurizer Pressure (psia)      2000      2100 High Subcritical Multiplication                          3.2 Low Pressurizer Pressure (psia)        1720      1850 High Containment Pressure (psia)                          9.5 Low Low Pressurizer Pressure (psia)    1600      1200              High Pressurizer Level (%)                                80 Low Low Pressurizer Level (%)            20        15              Low Pressurizer Level (%)                                35 Low Low Main Steam Pressure (psia)*                      20 High Main Steam Pressure (psia)        800      1200 Low Main Steam Pressure (psia)*                          300 Low RCS Flow (ft3/sec)                  1.7      1.0 High Main Steam Superheat (&deg;F)                            150 High CNV Water Level (inches)        240 - 264    N/A              Low Main Steam Superheat (&deg;F)                              0 Low RCS Pressure (psia)                800      N/A              Low Low RCS Flow    (ft3/sec)                              0 Low RPV Riser Level (inches)            N/A    540 - 552            Low AC Voltage (seconds)                                  60 High Under-the-Bioshield Temperature (&deg;F)                250 Low Low RPV Riser Level (inches)        N/A    460 - 472
                                                                    *In SDAA, the setpoint bypass is changed from RTP=15% to Thot=500 &deg;F PM-135236 Rev. 0 Copyright &#xa9; 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 13 Topical Reports PM-135236 Rev. 0 Copyright &#xa9; 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 14 SDAA Topical Reports
* Approved Topical Reports
* Acceptance Review ongoing o    Nuclear Analysis Codes and Methods (NACM)                o  Quality Assurance Program Description (QAPD) o    Highly Integrated Protection System (HIPS)
Platform                                                  o  LOCA Analysis Methodology o    Accident Source Term (AST)                                o  Non-LOCA Analyses Methodology o    Risk Significance Determination                          o  Density Wave Oscillation (DWO) o    Control Room Staffing                                    o  Extended Passive Cooling and Reactivity o    Soil-Structure-Fluid Interaction                            Control o    Building Design and Analysis Methodology (BDAM) o    Framatome Fuel Methodologies Applicability o    Evaluation Model for Stability Analyses
* Under NRC review o    Critical Heat Flux (CHF) o    Statistical Subchannel Analysis Methodology o    Rod-Ejection Analysis (REA)
PM-135236 Rev. 0 Copyright &#xa9; 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 15 Technical Reports PM-135236 Rev. 0 Copyright &#xa9; 2023 NuScale Power, LLC.
 
NuScale Nonproprietary 16 SDAA Technical Reports (by Chapter)
* Pipe Rupture Hazards (3)
* Fluence Calculation Methodology and Results (5)
* Containment Vessel Ultimate Pressure Integrity (3)
* Containment Leakage Integrity Assurance (6)
* US460 NPM Seismic Analysis (3)
* Instrument Setpoint Methodology (7)
* NuScale CVAP Analysis (3)
* Effluent Release (GALE Replacement)
Methodology and results (11)
* NuScale CVAP Measurement and Inspection Plan (3)
* NuScale Design of Physical Security System (13)
* NPM Short-Term Transient Analysis (3)
* Treatment of DC Power in Safety Analyses (15)
* NuFuel-HTP2TM Fuel and CRA Designs (4)
* US460 SDAA Technical Specification
* Use of Austenitic Stainless Steel for NPM Lower Development (16)
Reactor Pressure Vessel (5)
* Human Factor Engineering and Concept of
* Pressure and Temperature Limits Methodology (5)
Operations (18) - 10 Technical Reports PM-135236 Rev. 0 Copyright &#xa9; 2023 NuScale Power, LLC.}}

Latest revision as of 08:07, 15 November 2024

LLC Submittal of Presentation Materials Entitled, US460 Design and Sdaa Overview Update, PM-135236, Rev. 0 (Open Session)
ML23045A080
Person / Time
Site: 99902078, 05200050
Issue date: 02/14/2023
From: Shaver M
NuScale
To:
Office of Nuclear Reactor Regulation, Document Control Desk
References
LO-135022
Download: ML23045A080 (1)
v • d • e


Text

LO-135022

February 14, 2023 Docket No.52-050

U.S. Nuclear Regulatory Commission ATTN: Document Control Desk One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738

SUBJECT:

NuScale Power, LLC Submittal of Presentation Materials Entitled US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)

The purpose of this submittal is to provide presentation materials to the NRC for use during the upcoming Advisory Committee on Reactor Safeguards (ACRS) NuScale Subcommittee Meeting on February 15, 2023. The materials support NuScales presentation of the US460 design and overview of the NuScale Standard Design Approval Application.

The enclosure to this letter is the nonproprietary version of the presentation entitled US460 Design and SDAA Overview Update (Open Session).

This letter makes no regulatory commitments and no revisions to any existing regulatory commitments.

If you have any questions, please contact Thomas Griffith at 541-452-7813 or tgriffith@nuscalepower.com.

Sincerely,

Mark W. Shaver Acting Director, Regulatory Affairs NuScale Power, LLC

Distribution: Michael Dudek, NRC Getachew Tesfaye, NRC Bruce Bavol, NRC Mike Snodderly, NRC

Enclosure:

US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)

NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com LO-135022

Enclosure:

US460 Design and SDAA Overview Update, PM-135236, Revision 0 (Open Session)

NuScale Power, LLC 1100 NE Circle Blvd., Suite 200 Corvallis, Oregon 97330 Office 541.360.0500 Fax 541.207.3928 www.nuscalepower.com

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