ML20295A442
| ML20295A442 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/03/2020 |
| From: | Robert Kuntz Plant Licensing Branch III |
| To: | Domingos C Northern States Power Company, Minnesota |
| Kuntz R | |
| References | |
| EPID L-2019-LLA-0283 | |
| Download: ML20295A442 (6) | |
Text
November 3, 2020 Mr. Christopher P. Domingos Site Vice President Northern States Power Company - Minnesota Prairie Island Nuclear Generating Plant 1717 Wakonade Drive East Welch, MN 55089
SUBJECT:
PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 -
REGULATORY AUDIT
SUMMARY
REGARDING LICENSE AMENDMENT REQUESTS TO PERMIT THE USE OF RISK-INFORMED COMPLETION TIMES IN ACCORDANCE WITH TSTF-505, REVISION 2, PROVIDE RISK-INFORMED EXTENDED COMPLETION TIMES - RITSTF INITIATIVE 4B (EPID L-2019-LLA-0283)
Dear Mr. Domingos:
By letter dated December 16, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML19350C188), Northern States Power Company, a Minnesota corporation, doing business as Xcel Entergy (NSPM), submitted a license amendment request (LAR) for Renewed Facility Operating License Nos. DPR-42 and DPR-60 for the Prairie Island Nuclear Generating Plant, Units 1 and 2 (Prairie Island). The proposed amendment would modify the licensing basis of Prairie Island to allow for the implementation of the provisions of Technical Specification Task Force (TSTF) Traveler - 505, Provide Risk-informed Extended Completion Times - RITSTF Initiative 4b (ADAMS Accession No. ML18269A041).
The U. S. Nuclear Regulatory Commission (NRC) staff reviewed NSPMs LAR and determined that a regulatory audit would assist in the timely completion of the LAR review. The NRC staff conducted a regulatory audit that consisted of a remote audit from March 20 to July 17, 2020.
The audit plan was provided to the licensee on March 20, and revised on May 14 and June 2, 2020 (ADAMS Accession Nos. ML20083F420, ML20135G821, and ML20154K763, respectively). The updates to the audit plan were to revise the audit questions for the discussions between NSPM and the NRC staff during the week of May 18, 2020. The staff reviewed documents and held discussions with members of NSPM on the LARs relevant to the NRC staffs review. The collective results of the regulatory audit were used by the NRC staff to finalize requests for additional information, which will be issued separate from this summary.
The audit summary for the audit is enclosed.
If you have any questions, please contact me by telephone at 301-415-3733 or by e-mail to robert.kuntz@nrc.gov.
Sincerely,
/RA/
Robert F. Kuntz, Senior Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-282 and 50-306
Enclosure:
Regulatory Audit Summary cc: Listserv
Enclosure REGULATORY AUDIT
SUMMARY
LICENSE AMENDMENT REQUEST TO PERMIT THE USE OF RISK INFORMED COMPLETION TIMES IN ACCORDANCE WITH TSTF 505, REVISION 2, PROVIDE RISK INFORMED EXTENDED COMPLETION TIMES RITSTF INITIATIVE 4B NORTHERN STATES POWER COMPANY PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 DOCKET NOS. 50-282 AND 50-306
1.0 BACKGROUND
A regulatory audit is a planned license or regulation-related activity that includes the examination and evaluation of docketed and non-docketed information. The audit was conducted with the intent to gain understanding, to verify information, and to identify information that will require docketing to support the basis of a licensing or regulatory decision.
By letter dated December 16. 2019 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML19350C188), Northern States Power Company (NSPM, the licensee) submitted a following license amendment request (LAR) to the U.S. Nuclear Regulatory Commission (NRC) for Renewed Facility Operating License Nos. DPR-42 and DPR-60 for Prairie Island Nuclear Generating Plant, Units 1 and 2 (Prairie Island): The LAR requests to modify the Prairie Island licensing basis to allow for the implementation of the provisions of Title 10 of the Code of Federal Regulations (10 CFR) Section 50.69, Risk-informed categorization and treatment of structures, systems and components [SSCs] for nuclear power reactors (ADAMS Accession No. ML20031E699).
The NRC staff performed a preliminary review of the LAR and determined that a regulatory audit would assist in the timely completion of the reviews. The regulatory audit was performed consistent with NRC Office of Nuclear Reactor Regulation (NRR) Office Instruction LIC-111, Regulatory Audits, Revision 1 dated October 31, 2019 (ADAMS Accession No. ML19226A274). The NRC staff conducted a regulatory audit that consisted of a remote audit, including discussions with the licensee, from March 20 to July 17, 2020. The audit plan was provided to NSPM on March 20, 2020, and revised on May 14 and June 2, 2020 (ADAMS Accession Nos. ML20083F420, ML20135G821, and ML20154K763, respectively). The list of documents uploaded by the licensee in response to the NRC staffs request and examined by the audit team is provided in Section 5.0.
The NRC staff reviewed documents and held discussions with members of NSPM during the week of May 18, 2020, regarding the LAR under staff review. The collective results of the regulatory audit were used by the NRC staff to finalize requests for additional information (RAIs), which will be issued separately.
2.0 AUDIT ACTIVITIES AND OBSERVATIONS 2.1 In-Office and Remote Audits The remote audit was conducted using an online portal and teleconferencing capabilities. The purpose of the audit was to: (1) gain a better understanding of the information in the LARs to support the NRC staffs review, and (2) identify any information that would be required from the licensee to be provided on-the-docket for the NRC staff to render a staff finding to support the safety evaluation.
During the audit, detailed discussions were held on various topics with the licensee. The NRC staff assessed the information from the audit to determine whether the information is needed to be provided on-the-docket, and, therefore, the need for issuance of RAIs.
3.0 RESULTS OF THE AUDIT During the audit, the NRC staff did not make any regulatory decisions regarding the LAR under staff review. The audit identified information that the licensee needs to provide to the NRC on-the-docket and identified information that was not needed to render a staff finding, thus obviating the need for some RAIs.
4.0 AUDIT PARTICIPANTS NRC NSPM Robert Kuntz Peter Gohdes Jeff Circle Sara Scott Stephen Dinsmore Brian Slack Keith Tetter Salma Mahzooni Andrea Russell Greg Kvamme Mehdi Reisi Fard Kajan Gajanetharan Norbert Carte Jayne Ritter Sergiu Basturescu Mark Brossart Steve Wyman Tom Morgan Khoi Nguyen Diane Jones Garill Coles (contractor from Pacific Northwest National Laboratory)
Steve Ingalls Kevin Holmstrom Jeff LeClair 5.0 LIST OF DOCUMENTS AND MATERIALS PROVIDED IN THE ELECTRONIC READING ROOM Document No.
Description V.SPA.17.010-R1 Prairie Island Internal Events Probabilistic Risk Assessment Peer Review Findings Closure V.SPA.18.002-R0 PINGP FPRA Focused-Scope Peer Review V.SPA.19.007-R0 Prairie Island Internal Events and Fire Probabilistic Risk Assessment Peer Review Findings V.SPA.19.013-R0 Prairie Island RICT Evaluation of Open F&Os and Uncertainties V.SPA.19.012-R0 TSTF-505 LAR Supporting Calculations PI-PRA-SV-AC-R5.3 AC Power System Notebook PRA-PI-SY-AFW-R5.3 Auxiliary Feedwater System Notebook PRA-PI-SY-CL-R5.3 Cooling Water System Notebook PRA-PI-SY-CT-R5.3 External Circulating Water System Notebook PRA-PI-SY-SA-IA-R5.3 Station and Instrument Air System Notebook V.SPA.17.009-R0 PINGP Fire PRA Closure Report PRA-PI-SY-RP-AMSAC-DSS-R5.3 RP/AMSAC/DSS System Notebook PRA-PI-SY-ESFAS-R5.3 Engineered Safeguards System Notebook FPRA-PI-UNC-R5.3 Uncertainty and Sensitivity Notebook PRA-PI-UN-R5.3 Uncertainty Notebook
- via e-mail OFFICE NRR/DORL/LPL3/PM*
NRR/DORL/LPL3/LA*
NRR/DRA/APLA/BC*
NRR/DRA/APLB/BC(A)*
NAME RKuntz SRohrer RPascarelli JBorromeo DATE 10/21/2020 10/21/2020 10/22/2020 11/02/2020 OFFICE NRR/DRA/APLC/BC*
NRR/DEX/EICB/BC*
NRR/DEX/EEEB/BC*
NRR/DSS/STSB/BC*
NAME SRosenberg MWaters R.Stattle for BTitus VCusumano DATE 11/02/2020 11/02/2020 10/21/2020 10/22/2020 OFFICE NRR/DSS/SNSB/BC*
NRR/DSS/SCPB/BC*
NRR/DORL/LPL3/BC*
NRR/DORL/LPL3/PM*
NAME SKrepel BWittick NSalgado (JWiebe for)
RKuntz DATE 10/22/2020 10/22/2020 11/03/2020 11/03/2020