ML20328A038

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Regulatory Audit Summary License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler TSTF-505, Revision 2, Provide Risk Informed Extended Completion Times RITSTF Initiative 4B
ML20328A038
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 01/08/2021
From: Robert Kuntz
Plant Licensing Branch III
To: Conboy T
Northern States Power Company, Minnesota
Kuntz R NRR/DORL 301-415-3733
References
EPID L-2020-LLA-0062
Download: ML20328A038 (6)


Text

January 8, 2021 Mr. Thomas A. Conboy Site Vice President Northern States Power Company - Minnesota Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362

SUBJECT:

MONTICELLO NUCLEAR GENERATING PLANT - REGULATORY AUDIT

SUMMARY

REGARDING 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 (EPID L-2020-LLA-0062)

Dear Mr. Conboy:

By letter dated March 30, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20090F820), Northern States Power Company, a Minnesota corporation, doing business as Xcel Entergy (NSPM), submitted a license amendment request (LAR) for Renewed Facility Operating License No. DPR-22 for the Monticello Nuclear Generating Plant (Monticello). The proposed amendment would modify the licensing basis of Monticello to allow for the implementation of the provisions of Technical Specification Task Force (TSTF) Traveler TSTF-505, Provide Risk-informed Extended Completion Times -

RITSTF Initiative 4b (ADAMS Package Accession No. ML18269A041).

The 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 July 29 to September 28, 2020. The audit plan was provided to the licensee on July 29, 2020 (ADAMS Accession No. ML20211M275). The audit plan included audit questions for the discussions between NSPM and the NRC staff during the week of August 17, 2020. The staff reviewed documents and held discussions with members of NSPM on the LAR relevant to the NRC staffs review.

The 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.

T. Conboy 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 No. 50-263

Enclosure:

Regulatory Audit Summary cc: Listserv

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 MONTICELLO NUCLEAR GENERATING PLANT DOCKET NO. 50-263

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 March 30, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20090F820), Northern States Power Company (NSPM, the licensee) submitted a license amendment request (LAR) to the U.S. Nuclear Regulatory Commission (NRC) for Renewed Facility Operating License No. DPR-22 for Monticello Nuclear Generating Plant (Monticello). The proposed amendment would modify the licensing basis of Monticello 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 Package Accession No. ML18269A041).

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 August 17 to August 21, 2020. The audit plan was provided to NSPM on July 29, 2020 (ADAMS Accession No. ML20211M275). 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 August 17, 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.

Enclosure

2.0 AUDIT ACTIVITIES AND OBSERVATIONS 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 LAR to support the 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 Malcolm Patterson Sara Scott Mihaela Biro Brian Slack Keith Tetter Adam Stein Shilp Vasavada Sinnathurai Gajanetharan Raul Hernandez-Figueroa Jayne Ritter David Nold Mark Brossart Summer Sun Tom Morgan Andrea Russell Mike Miller Norbert Carte Randy Neulk Ming Li Steve Hammer Adakou Foli Jeff LeClair Khoi Nguyen Naeem Iqbal Mark Wilk (contractor from Pacific Northwest National Laboratory)

5.0 LIST OF DOCUMENTS AND MATERIALS PROVIDED IN THE ELECTRONIC READING ROOM Document No. Description FPRA-MT-UN-R5.0 Fire PRA Uncertainty and Sensitivity Analysis Notebook Operations Manual, C.4-k Immediate Reactor Shutdown PRA-CALC-17-005-R0 Monticello Nuclear Generating Plant PRA Focused Scope Peer Review Report PRA-CALC-17-016-R0 MNGP Internal Events PRA Facts and Observations Independent Assessment Report PRA-CALC-17-019-R1, MNGP Fire PRA F&O Closure Report PRA-CALC-19-002-R0 MNGP Fire PRA F&O Closure Independent Assessment PRA-CALC-MT-19-018-R0 MNGP Impact of Model Uncertainty to the RICT Process PRA-CALC-MT-RICT-R1 TSTF-505 LAR Supporting Calculations PRA-MT-RA-R5.0 Recovery of AC Power Notebook PRA-MT-UN-R5.0 Sources of Modeling Uncertainty Notebook

ML20328A038 OFFICE NRR/DORL/LPL3/PM NRR/DORL/LPL3/LA NRR/DRA/APLA/BC NRR/DRA/APLC/BC NAME RKuntz SRohrer (JBurkhardt for) RPascarelli SRosenberg DATE 11/23/2020 11/23/2020 12/15/2020 1/4/2020 OFFICE NRR/DSS/SCPB/BC NRR/DSS/SNSB/BC NRR/DEX/EEEB/BC NRR/DSS/STSB/BC NAME BWittick SKrepel BTitus VCusumano DATE 11/30/2020 11/24/2020 12/1/2020 11/23/2020 OFFICE NRR/DORL/LPL3/BC NRR/DORL/LPL3/PM NAME NSalgado (JWiebe for) RKuntz DATE 1/8/2021 1/8/2021