ML25268A085

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Agenda - Kemmerer Unit 1 CPA - Sc - October 8-9, 2025
ML25268A085
Person / Time
Site: Kemmerer File:TerraPower icon.png
Issue date: 09/25/2025
From: Kent Howard
Advisory Committee on Reactor Safeguards
To:
References
Download: ML25268A085 (5)


Text

UNITED STATES NUCLEAR REGULATORY COMMISSION ADVISORY COMMITTEE ON REACTOR SAFEGUARDS WASHINGTON, DC 20555-0001 US SFR Owner, LLC (TerraPower, LLC subsidiary) Construction Permit Application:

Kemmerer Power Station Unit 1 October 8-9, 2025 Two White Flint, ACRS Meeting Room T-2D10 11545 Rockville Pike, Rockville, MD Open to the Public Subcommittee/Topic Chairman:

TerraPower Natrium Design Centered Subcommittee/Thomas Roberts, Chairman Designated Federal Officer (DFO): Kent Howard, (301) 415-2989 Kent.Howard@nrc.gov This will be a hybrid meeting with both in-person and remote capability. All times are Eastern. If you would like the Microsoft Teams link forwarded to you, please contact the Designated Federal Officer.

Microsoft Teams meeting Join the meeting now Meeting ID: 252 908 364 093 0 Passcode: zp2ks9Sm Or call in (audio only): (301) 576-2978, Passcode: 530774959#

AGENDA Day 1 October 8, 2025 OPEN SESSION Item Topic Presenter(s)

Time 1

Introduction/Opening Remarks and Objectives Thomas Roberts, ACRS 8:30 am - 8:35 am 2

NRC Opening Remarks Josh Borromeo, NRR 8:35 am - 8:40 a.m.

3 Introduction and Agenda Mallecia Sutton, NRR 8:40 am - 9:00 am

4 Design Overview Overview of Safety Approach Design Orientation and Discussion of High-Level SSC Functions USO 9:00 am - 9:40 am 5

LMP Overview Summary Overview of LMP Process Reed Anzalone, Tracy Radel, Hanh Phan, Michelle Hart, NRR 9:40 am - 10:10 am 6

LBE Identification and Scope LBE Identification Process & Hazard Screening PRA Scope for CP Identification of AOOs, DBEs, BDBEs, and Derivation of DBAs from DBEs OQEs and Cliff-Edge Effects USO 10:20 am - 10:45 am 7

NRC review of LBE Identification and Scope LBE Identification Process and Hazard Screening PRA Scope for CP LBE Scope + DBAs Reed Anzalone, Tracy Radel, Hanh Phan, Michelle Hart, NRR 10:45 am - 11:50 am Lunch 11:50 am - 12:50 pm 8

Implementation of LMP Safety Classification Process USO 12:50 pm - 1:50 pm 9

NRC review of Implementation of LMP Safety Classification Process Tracy Radel and Reed Anzalone, NRR 1:50 pm - 2:50 pm 10 Public Comments Public 2:50 pm - 3:15 pm 11 Adjourn OPEN Session Thomas Roberts, ACRS 3:15 pm CLOSED SESSION TO FOLLOW, NOT OPEN TO PUBLIC

Day 2 October 9, 2025 OPEN SESSION Item Topic Presenter(s)

Time 1

Introduction/Opening Remarks and Objectives Thomas Roberts, ACRS 8:30 am - 8:35 am 2

Safety Analysis Methods PRA Methodology Functional Containment Mechanistic Source Term/Consequence Analysis Major Accident USO 8:35 am - 10:30 am 3

NRC review of Safety Analysis Methods PRA methodology Hanh Phan, NRC 10:30 am - 11:00 am 4

NRC review of Safety Analysis Methods Functional Containment MST/Consequence Analysis Major Accident Michelle Hart, Tracy Radel, NRC 11:00 am - 12:30 pm Lunch 12:30 pm - 1:30 pm 5

DID & Integrated Risk Evaluation Integrated Risk Evaluation DID Evaluation DBHLs NSRST SSC Special Treatments Seismic Classification and Design Criteria USO 1:30 pm - 2:30 pm 6

NRC review of DID & Integrated Risk Evaluation Hanh Phan, Michelle Hart, Reed Anzalone, NRC 2:30 pm - 3:30 pm 7

Selected Safety Analysis Results Reactivity Transient LOF Transient LOHS Transient USO 3:30 pm - 4:00 pm 8

NRC review of Selected Safety Analysis Results Reactivity Transient LOF Transient LOHS Transient NRC staff 4:00 pm - 4:30 pm 9

Public Comments Public 4:30 pm - 5:00 pm 10 Adjourn OPEN Session Thomas Roberts, ACRS 5:00 pm CLOSED SESSION TO FOLLOW, NOT OPEN TO PUBLIC

NOTES:

Breaks are at the discretion of the Subcommittee Chairman In accordance with the purposes of Sections 29 and 182b of the Atomic Energy Act (42 U.S.C. 2039, 2232(b)), the Advisory Committee on Reactor Safeguards (ACRS) will hold this Subcommittee meeting. In addition, the ACRS is implementing Executive Order (EO) 14300, Ordering the Reform of the Nuclear Regulatory Commission, dated May 23, 2025. Section 4.(b) of the EO states, in part, that the functions of the Advisory Committee on Reactor Safeguards (ACRS) shall be reduced to the minimum necessary to fulfill ACRSs statutory obligations and that review by ACRS of permitting and licensing issues shall focus on issues that are truly novel and noteworthy. The ACRS will only undertake other work as directed by the Commission in accordance with Sections 29 and 182b of the Atomic Energy Act.

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