ML23313A159

U.S. Nuclear Regulatory Commission Summary of the October 10, 2023, Public Meeting to Discuss Monticello'S Condensate Backwash Receiving Tank Fatigue Evaluation

ML23313A159
Person / Time
Site:	Monticello
Issue date:	11/09/2023
From:	Mary Johnson NRC/NRR/DNRL/NLRP
To:	Lauren Gibson NRC/NRR/DNRL/NLRP
References
Download: ML23313A159 (5)

Text

November 9, 2023 MEMORANDUM TO: Lauren K. Gibson, Branch Chief Licensing Renewal Projects Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation FROM: Marieliz Johnson, Project Manager /RA/

Licensing Renewal Projects Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation

SUBJECT:

U.S. NUCLEAR REGULATORY COMMISSION

SUMMARY

OF THE OCTOBER 10, 2023, PUBLIC MEETING TO DISCUSS MONTICELLOS CONDENSATE BACKWASH RECEIVING TANK FATIGUE EVALUATION On October 10, 2023, an observation public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) staff and Northern States Power Company, a Minnesota corporation (NSPM) regarding Monticello Nuclear Generating Plant, Unit 1 (MNGP),

Condensate Backwash Receiving Tank Fatigue Evaluation. Participants included personnel from the NRC, NSPM and members of the public.

The public meeting notice can be found in the Agencywide Documents Access and Management Systems (ADAMS) Accession No. ML23275A003. This meeting notice was also posted on the NRC public website.

Enclosed are the meeting agenda (Enclosure1) and list of participants in the meeting (Enclosure 2).

CONTACT: Marieliz Johnsons, NRR/DNRL 301-415-5861

L. Gibson

SUMMARY

The purpose of this meeting was to discuss Monticello's Subsequent License Renewal Application (SLRA) Section 4.6.3, Condensate Backwash Receiving Tank Fatigue Evaluation related to Monticello Nuclear Generating Plant, Unit 1 SLRA Breakout Audit Questions, page 72 (ML23214A242).

The applicant described the issue with the existing calculation on the cumulative usage factor of the condensate backwash receiving tank and communicated a new calculation was being performed. The applicant explained that the new fatigue evaluation would use correct transient cycles. The applicant also indicated that it would submit a Supplement around mid-November with a revised fatigue evaluation.

The applicant explained that, if the revised fatigue evaluation shows that the tank continues to meet the fatigue design limit for the subsequent period of extended operation, the tank would not need a structural modification. If the revised fatigue evaluation shows that the tank needs a structural modification, the applicants Supplement would address the modification to reduce the accumulation of the cumulative usage factor of the tank.

ML23313A159 *via email NRR-106 OFFICE NRR/DNLR/NLRP: PM NRR/DNRL/NLIB: LA NRR/DNRL/NLRP: PM NAME MJohnson SGreen MJohnson DATE 11/9/2023 11/09/2023 11/9/2023 U.S. NUCLEAR REGULATORY COMMISSION

SUMMARY

OF THE OCTOBER 10, 2023, TO DISCUSS MONTICELLOS CONDENSATE BACKWASH RECEIVING TANK FATIGUE EVALUATION Meeting Agenda Time Topic Organization 1:30 pm - 1:45 pm Introductions All 1:45 pm - 2:45 pm Technical Discussion NRC and Xcel Energy 2:45 pm - 3:00 pm Opportunity for public comments NRC and Public 3:00 pm Adjourn All Enclosure 1

U.S. NUCLEAR REGULATORY COMMISSION

SUMMARY

OF THE OCTOBER 10, 2023, TO DISCUSS MONTICELLOS CONDENSATE BACKWASH RECEIVING TANK FATIGUE EVALUATION List of Attendees Name Affiliation Marieliz Johnson Nuclear Regulatory Commission (NRC)

Seung Min NRC Stephen E Sollom Xcel Energy Max W. Smith Xcel Energy Paul B Young Xcel Energy Matthew T Sears Xcel Energy Jeff Gromatzky Enercon Reene Gambrell Enercon Latoya Bennett Enercon Joanne Aleksick Enercon Gary Adkins Enercon Matthew C. Ridzon Enercon Ian Miller Enercon Franzone, Stephan Southern Co Deen, Bradford D. Southern Co Enclosure 2