ML24211A089
| ML24211A089 | |
| Person / Time | |
|---|---|
| Site: | 05200050 |
| Issue date: | 07/29/2024 |
| From: | Getachew Tesfaye NRC/NRR/DNRL/NRLB |
| To: | Jardaneh M NRC/NRR/DNRL/NRLB |
| References | |
| Download: ML24211A089 (8) | |
Text
July 29, 2024
MEMORANDUM TO: Mahmoud Jardaneh, Chief New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation
FROM: Getachew Tesfaye, Senior Project Manager /RA/
New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation
SUBJECT:
UPDATED - AUDIT PLAN FOR THE STAFF REVIEW OF THE NUSCALE POWER, LLC STANDARD DESIGN APPROVAL APPLICATION - NUSCALE US460 DESIGN
By letter dated October 31, 2023, NuSc ale Power, LLC (NuScale) submitted Standard Design Approval Application (SDAA), Revision 1 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML23306A033). The associated topical reports (TRs) that are being reviewed with the SDAA are: TR-0516-49422, Loss of Coolant Accident (LOCA)
Evaluation Model, Revision 3 (ML23008A002); TR- 0516-49416, Non-LOCA Transient Analysis Methodology, Revision 4 (ML23005A305); TR-124587, Extended Passive Cooling and Reactivity Control Methodology, Revis ion 0 (ML23005A308); and TR-131981, Methodology for the Determination of the Onset of Density Wave Oscillations (DWO), Revision 1 (ML23212B224). The U.S. Nuclear Regulatory Commi ssion (NRC) staff issued the initial audit plan for the SDAA safety review on March 22, 2023 (ML23067A300). This update to that audit plan adds a new phase to disposition already identified issues for High Effort chapters and their supporting topical and technical reports. The update will also reflect the current status of the audit activities, including identifying the chapters for which the audit has been completed.
The audit began on March 27, 2023, with an Entrance meeting. The audit is being conducted primarily via the established NuScale Electr onic Reading Room and at NuScales offices in Rockville, Maryland and Corvallis, Oregon. To date, the staff has issued two audit status letters where information that need to be submitted on the docket has been identified (ML23151A119 and ML24138A200). The contents of the updated audit plan are provided as an enclosure to this memorandum.
Docket No. 05200050
Enclosure:
Audit Plan
cc w/encl: NuScale Power, LLC Listserv
CONTACT: Getachew Tesfaye, NRR/DNRL 301-415-8013
ML24211A089 *via email NRR-106 OFFICE DNRL/NRLB: PM DNRL/NLIB: LA DNRL/NRLB: BC DNRL/NRLB: PM NAME GTesfaye SGreen* MJardaneh
- GTesfaye DATE 07/27/2024 07/29/2024 07/29/2024 07/29/2024 UNITED STATES NUCLEAR REGULATORY COMMISSION AUDIT PLAN FOR THE STAFF REVIEW OF THE NUSCALE POWER, LLC STANDARD DESIGN APPROVAL APPLICATION - NUSCALE US460 DOCKET NO. 05200050
AUDIT PLAN
APPLICANT:
NuScale Power, LLC (NuScale)
CONTACTS:
Licensing Manager: Thomas Griffith
Licensing Supervisors: Jim Osborn, Wren Fowler, Elisa Fairbanks, Amanda Bode
DURATION:
Phase A: High Effort Chapters (1, 3.7, 3.8, 3.9.2, 4, 5, 6, 8.3, 15, 16, 17.4, 19.1-19.3) and applicable Technical and Topical Reports - March 27, 2023, through August 31, 2024
Phase A: Medium Effort Chapters (3 except 3.7, 3.8, 3.9.2, 7, 8 except 8.3, 9, 12, 14, 19.4, 19.5) and applicable Technical Reports - March 27, 2023, through December 27, 2023 [Completed]
Phase A: Low Effort Chapters (2, 10, 11, 13, 17 except 17.4, 18,) and applicable Technical Reports - March 27, 2023, through June 27, 2023 [Completed]
LOCATION:
U.S. Nuclear Regulatory Commission (NRC) Headquarters (via NuScale Electronic Reading Room (eRR))
One White Flint North 11545 Rockville Pike Rockville, Maryland 20852-2738 NuScale 11333 Woodglen Drive, Suite 205 Rockville, Maryland 20852 NuScale 1100 NE Circle Blvd Corvallis, Oregon 97330
Enclosure AUDIT TEAM (Project Managers):
Mahmoud Jardaneh (Branch Chief) Ricky Vivanco David Drucker Getachew Tesfaye (Project Lead) Thomas Hayden Dennis Galvin Stacy Joseph Prosanta Chowdhury Greg Cranston Alina Schiller River Rohrman
AUDIT TEAM (Technical Branch Chiefs):
Branch Chief Branch Branch Chief Branch Wendell Morton DEX/EEEB Milton Valentin DSS/SCPB Stewart Bailey DEX/EMIB Shivani Mehta DSS/STSB Jason Paige DEX/ELTB Angie Buford DNRL/NVIB Fanta Sacko DEX/EICB Matthew Mitchell DNRL/NPHP Ian Tseng DEX/ESEB Steven Bloom DNRL/NCSG Barbara Hayes DEX/EXHB James Anderson DRO/IOLB Evan Davidson DRA/APLB Kerri Kavanagh DRO/IQVB Shilp Vasavada DRA/APLC Kenneth Erwin NMSS/REFS/ERNRB Kevin Hsueh DRA/ARCB Jessie Quichocho NSIR/DPR/RLB Rebecca Patton DSS/SNRB Mario Fernandez NSIR/DPCP/CSB Phillip Sahd DSS/SNSB Amanda Marshall NSIR/DPCP/RSB Scott Krepel DSS/SFNB
2 I. BACKGROUND AND OBJECTIVES
By letter dated October 31, 2023, NuScale Power, LLC (NuScale) submitted Standard Design Approval Application (SDAA), Revision 1 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML23306A033). The a ssociated topical reports (TRs) that are being reviewed with the SDAA are: TR-0516-49422, Loss of Coolant Accident (LOCA)
Evaluation Model, Revision 3 (ML23008A002); TR -0516-49416, Non-LOCA Transient Analysis Methodology, Revision 4 (ML23005A305); TR-124587, Extended Passive Cooling and Reactivity Control Methodology, Revisi on 0 (ML23005A308); and TR-131981, Methodology for the Determination of the Onset of Density Wave Oscillations (DWO), Revision 1 (ML23212B224). The purpose of this audit is for the NRC staff to conduct the staffs safety review of the NuScale SDA application in such a manner that identified issues can readily and easily be discussed and closed-out in order to provide a more predictable review schedule. The audit also achieves a more effective and efficient review by allowing the staff to review and discuss supporting material with the objective of improving communication and eliminating unnecessary requests for additional information. The staff audits material that may be needed to make a reasonable assurance finding that the design protects public health and safety. If the NRC staff identifies information that is needed to support a finding, NuScale submits that information on the application docket.
The NRC staff issued the initial audit plan for the SDAA safety review on March 22, 2023 (ML23067A300). This update to that audit plan adds a new phase to disposition already identified issues for High Effort chapters and their supporting topical and technical reports (see DURATION above). The update will also reflect the current status of the audit activities, including identifying the chapters for which the audit has been completed.
II. REGULATORY AUDIT BASIS
This regulatory audit is primarily based on Title 10 of the Code of Federal Regulations (10 CFR)
Part 52, Licenses, Certifications, and Approvals for Nuclear Power Plants.
- 10 CFR Subpart E - Standard Design Approvals o § 52.131 Scope of subpart.
o § 52.133 Relationship to other subparts.
o § 52.135 Filing of applications.
o § 52.136 Contents of applications; general information.
o § 52.137 Contents of applications; technical information.
o § 52.139 Standards for review of applications.
o § 52.141 Referral to the Advisory Committee on Reactor Safeguards.
o § 52.143 Staff approval of design.
o § 52.145 Finality of standard design approvals; information requests.
o § 52.147 Duration of design approval.
III. REGULATORY AUDIT SCOPE
The audit covers all parts of the NuScale SDA application (ML23306A033) and all parts of the following four topical reports: (1) TR-0516-49422, Loss-of-Coolant Accident [LOCA] Evaluation Model, Revision 3 (ML23008A002); (2) TR-0516-49416, Non-Loss-of-Coolant Accident Analysis Methodology, Revision 4 (ML23005A305); (3) TR-124587, Extended Passive Cooling and Reactivity Control Methodology, Revision 0 (ML23005A308); and (4) TR-131981,
3 Methodology for the Determination of the Onset of Density Wave Oscillations (DWO),
Revision 1 (ML23212B224).
IV. INFORMATION AND OTHER MATERIAL NECCSSARY FOR THE REGULATORY AUDIT
NuScale should be prepared to provide documents, reports, calculations, computer code verification, and other material, as applicable, supporting the analyses documented in the respective chapters of NuScale SDAA Final Sa fety Analysis Report (FSAR), and technical and topical reports. The NRC staff may request that NuScale make these additional materials available in the eRR and/or as a computer disc to be submitted on the docket.
V SPECIAL REQUESTS
NuScale and NRC have discussed and agr eed upon the following audit logistics:
- NuScale creates Certrec eRR portal for document viewing.
o NuScale to set up access for NRC participants once the staff emails are communicated.
- Weekly schedule for audit activities o Friday - NRC PMs submits audit issues (via email) o Monday - NuScale addresses issues o Tuesday/Wednesday/Thursday - standing audit meetings o Thursday/Friday - NuScale posts issue responses in eRR
- During the standing audit meetings NuScale and NRC staff will:
o Clarify audit issues o Discuss audit issue resolutions o Discuss additional document needs o Discuss and decide on timeframe for issue resolution Expectation is < 30 days for response to be posted to eRR.
Other timelines to be developed if necessary for a complete resolution.
o Determine if a docketed response is required.
- NRC to track status of audit issues (internal spreadsheet).
o NRC to provide NuScale a copy of the current tracker on Fridays.
o Ensure mutual alignment during weekly standing meetings.
- NuScale to develop issue responses to audit questions.
- Written responses will be uploaded to Certrec eRR on Thursdays/Fridays.
o NRC PMs will be notified via email when responses are available.
o Associated NuScale documents requested in the audit will be available in eRR for viewing.
- NRC to review audit issue responses and documentation in eRR.
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- Feedback on audit issue responses and discu ssion to be held in weekly standing meetings.
- NRC approval or rejection of audit is sue responses communicated verbally.
o If issue response is approved, the NRC staff determines if the response needs to be submitted on the docket.
o NRC will periodically issue an administr ative request for additional information (RAI) for issues resolved in eRR and submittal on the docket is needed.
o If response is rejected, NuScale returns to internal response development steps.
- Responses will be posted twice before moving questions to formal RAI process.
o This is a guideline that can be adjusted if necessary to cycle minor changes.
o Once original response and one revised response are posted, further cycles will be moved to RAI process.
- NuScale to request NRC elevation audit issue to RAI process via email.
- The RAI process will be used when:
o NRC requires formal docketing of a response
o completion of the response will extend past the audit close date
o requested by NuScale or NRC
- NRC will send formal RAI to NuScale via email
- RAI clock starts on the day the question is sent
o < 30 days from receipt to response posted in eRR
- NuScale will respond to RAI questions:
o Does the RAI contain proprietary, export control, or security related information?
o Is clarification needed?
o Is the 30-day response timeline achievable?
NuScale responses to RAIs will be submitted electronically to the NRC docket.
VI DELIVERABLES
The NRC audit team is expected to be compos ed of the above listed project managers along with a multi-faceted group of NRC technical reviewers and contractors. The NRC staff acknowledges the proprietary nature of the information requested and will handle it in
5 accordance with agency policies and procedures throughout the audit. While the NRC staff will take notes, the NRC staff will not remove hard copies or electronic files from the audit site(s).
The audit started on March 27, 2023, and will end based on a chapters/sections level of effort designation of Low, Medium, or High (see DURATION above).
The NRC will inform NuScale of emerging information needs as well as documents that can be removed from eRR.
Five audit reports will be generated at the completion of the audit for the SDAA and the four supporting TRs. The audit report will include a link for audit status letters and all docketed materials requested by the staff during the audit.
The NRC point of contact for communicating questi ons or comments related to the conduct of the audit is Mr. Getachew Tesfaye, who can be reached at 301-415-8013 or via email at Getachew.tesfaye@nrc.gov.
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