ML23107A227
| ML23107A227 | |
| Person / Time | |
|---|---|
| Site: | 99902052 |
| Issue date: | 04/19/2023 |
| From: | Bavol B NRC/NRR/DNRL/NRLB |
| To: | Michael Dudek NRC/NRR/DNRL/NRLB |
| References | |
| TR-0716-50350, Rev 2 | |
| Download: ML23107A227 (5) | |
Text
April 19, 2023 MEMORANDUM TO:
Michael I. Dudek, Chief New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation FROM:
Bruce M. Bavol, Project Manager
/RA/
New Reactor Licensing Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation
SUBJECT:
SUPPLEMENT TO AUDIT PLAN FOR THE REGULATORY AUDIT OF NUSCALE POWER TOPICAL REPORT SUPPLEMENT ENTITLED STATISTICAL SUBCHANNEL ANALYSIS METHODOLOGY, TR-108601, REVISION 1 INCORPORATING A LIMITED SCOPE AUDIT FOR ROD EJECTION ACCIDENT METHODOLOGY, TR-0716-50350, REVISION 2 By letter dated April 25, 2022, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22115A222), NuScale requested U.S. Nuclear Regulatory Commission (NRC) review and approval of Topical Report (TR) Supplement Entitled Statistical Subchannel Analysis Methodology, Supplement 1 to TR-0915-17564-P-A, Revision 2, TR-108601, Revision 1. The purpose of supplementing the Subchannel audit plan is to annotate the extended duration and to add a limited scope audit review for TR-0716-50350, Revision 2, Rod Ejection Accident Methodology, (ML21351A399).
The audit will take place at NRC headquarters via use of the NuScale electronic reading room.
The audit entrance was held on July 13, 2022, as mutually agreed. The audit exit has been extended to May 31, 2023, based on the substantive changes made as revisions to the evaluation model in the Subchannel TR, which forms part of the basis for portions of the Rod Ejection TR methodology. The additional contents of the audit plan are provided as an enclosure.
Docket No. 99902078
Enclosure:
Audit Plan CONTACT: Bruce Bavol, NRR/DNRL 301-415-6715
ML23107A227 NRR-106 OFFICE DNRL/NRLB:PM DNRL/NLIB:LA DNRL/NRLB:PM DNRL/NRLB:BC NAME BBavol SGreen GTesfaye MDudek: SJoseph for DATE 04/17/2023 04/17/2023 04/19/2023 4/19/2023 Enclosure UNITED STATES NUCLEAR REGULATORY COMMISSION SUPPLEMENT TO AUDIT PLAN FOR THE REGULATORY AUDIT OF NUSCALE POWER TOPICAL REPORT SUPPLEMENT ENTITLED STATISTICAL SUBCHANNEL ANALYSIS METHODOLOGY, TR 108601, REVISION 1 INCORPORATING A LIMITED SCOPE AUDIT FOR ROD EJECTION ACCIDENT METHODOLOGY, TR-0716-50350, REVISION 2 Docket NO.: 99902078 AUDIT PLAN APPLICANT: NuScale Power, LLC (NuScale)
CONTACTS: Wren Fowler DURATION:
Extension July 13, 2022 - May 31, 2023 LOCATION:
U.S. Nuclear Regulatory Commission (NRC) Headquarters (via NuScales 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, OR 97330 AUDIT TEAM: Antonio Barrett, (Technical Lead) Office of Nuclear Reactor Regulation (NRR)
Ryan Nolan, (Technical Lead) (NRR)
Bruce Bavol, (Project Manager) (NRR)
Stacy Joseph, (Project Manager) (NRR)
Andy Bielen, (Technical Reviewer) (NRR)
Zhan Li, (Technical Reviewer) (NRR)
Josh Kaizer, (Technical Reviewer) (NRR)
Adam Rau, (Technical Reviewer) (NRR)
Peter Lien, (Technical Reviewer) Office of Nuclear Regulatory Research (RES)
2 I.
BACKGROUND AND OBJECTIVES By letter dated April 25, 2022, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22115A222), NuScale requested U.S. Nuclear Regulatory Commission (NRC) review and approval of Topical Report (TR) Supplement Entitled Statistical Subchannel Analysis Methodology, Supplement 1 to TR-0915-17564-P-A, Revision 2, TR-108601, Revision 1. The purpose of supplementing the Subchannel audit is to annotate the extended duration and to add a limited scope audit review for Rod Ejection Accident Methodology, TR-0716-50350, Revision 2, (ML21351A399).
The audit will take place at NRC headquarters via use of the NuScale electronic reading room.
The audit entrance was held on July 13, 2022, as mutually agreed. The audit exit has been extended to May 31, 2023, based on the substantive changes made as revisions to the evaluation model in the Subchannel TR, which forms part of the basis for portions of the Rod Ejection TR methodology. The additional contents of the audit plan are provided as an enclosure.
II.
REGULATORY AUDIT BASIS This regulatory audit is based on the following:
This regulatory audit is based on TR supplement entitled Statistical Subchannel Analysis Methodology, Supplement 1 to TR-0915-17564-P-A, Revision 2, TR-108601, Revision 1 (ML22115A222) and TR Rod Ejection Accident Methodology, Revision 2, TR-0716-50350, (ML21351A399)
III.
REGULATORY AUDIT SCOPE The audit team will examine supporting documentation and calculations associated with the substantive changes made as revisions to the evaluation model in the Subchannel TR, which forms part of the basis for portions of the Rod Ejection TR methodology. The audit team will also meet with subject matter expert(s) to discuss details of the supporting information.
IV.
INFORMATION AND OTHER MATERIAL NECCSSARY FOR THE REGULATORY AUDIT The NRC staff will submit selected issues to NuScale that cover three categories: general clarifications, missing TR information, and requests to see supporting documents. Staff will request information be made available via the NuScale electronic reading room. Some information may be requested via requests for additional information so that it can be submitted on the docket.
V SPECIAL REQUESTS The NRC staff requests that NuScale provide subject matter expert(s), if necessary, to discuss the details of the audit material requested in Section IV of this audit plan.
3 VI DELIVERABLES The Subchannel audit initiated on July 13, 2022, will end on May 31, 2023 (which includes the limited scope audit review for Rod Ejection Accident Methodology, TR-0716-50350, Revision 2).
The staff will hold audit calls and/or meetings with NuScale as necessary to understand audit material. The NRC will inform NuScale of emerging information needs as well as documents that can be removed from eRR.
An audit report will be prepared and issued in accordance with NRR-LIC-111 within 90 days following the completion of the audit. If necessary, any circumstances related to the conductance of the audit will be communicated to, Bruce Bavol, at 301-415-6715 or Bruce.Bavol@nrc.gov and Stacy Joseph, at 301-415-3257 or Stacy.Joseph@nrc.gov.