ML25129A089

E-Mail - Final Request for Additional Information - EPRI Report 3002028939, Risk-informed High Energy Line Break Evaluation Requirements

ML25129A089
Person / Time
Site:	Electric Power Research Institute
Issue date:	05/19/2025
From:	Lois James Licensing Processes Branch
To:	Ruszkowski M Electric Power Research Institute
References
EPRI TR 3002028939, EPRI TR 3002028939, Rev 0, EPRI TR 3002028939, Revision 0, EPID L-2024-LRM-0062 pre-app, EPID L-2024-TOP-0003 pre-fee, EPID L-2024-NTR-0006 post-fee, Risk-Informed HELB Methodology
Download: ML25129A089 (1)

Text

1 Lois James From:

Lois James Sent:

Monday, May 19, 2025 2:47 PM To:

Ruszkowski, Michael J.

Cc:

RidsNrrOd Resource; RidsNrrDex Resource; RidsNrrDexEMIB Resource; RidsNrrDexESEB Resource; RidsNrrDnrl Resource; RidsNrrDnrlNphp Resource; RidsNrrDorl Resource; RidsNrrDorlLlpb Resource; RidsNrrDra Resource; RidsNrrDraApla Resource; RidsACRS_MailCTR Resource; Demetrius Murray; Lois James; John Bozga; Ching Ng; Kamal Manoly; Chakrapani Basavaraju; Kaihwa Hsu; David Rudland; David Gennardo; Stephen Cumblidge; Eric Reichelt; Jennie Rankin; Stewart Bailey; Bob Pascarelli; Ian Tseng; Matthew Mitchell; Robert Tregoning; Jeff Poehler; Steve Ruffin; Angelo Stubbs; Scott Krepel; Matthew McConnell; 'fferrante@epri.com'; 'mruszkowski@epri.com';

'poregan@comcast.net'; 'alindeman@epri.com'; 'rfougerousse@epri.com'

Subject:

Final Request for Additional Information - EPRI Report 3002028939, Risk-informed High Energy Line Break Evaluation Requirements (EPID L-2024-NTR-0006)

Attachments:

Final RAIs for EPRI Technical Report 3002028939, Risk-informed High Energy Line Break Evaluation Requirements.pdf Michael Ruszkowski, Plant Support Director Electric Power Research Institute 1300 West W.T. Harris Blvd Charlotte, NC 28262-8550

Dear Michael Ruszkowski:

By letter dated July 23, 2024 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML24205A146), Electric Power Research Institute (EPRI) submitted EPRI Technical Report 3002028939, Risk-Informed High-Energy Line Break Evaluation Requirements, to the U.S. Nuclear Regulatory Commission (NRC) for review and approval. EPRI Report 3002028939 provides an alternative means for assessing and confirming that plant structures, systems, and components that are important to safety are adequate to accommodate the effects of postulated accidents, including appropriate protection against the dynamic and environmental effects of postulated pipe ruptures.

By email dated September 10, 2024 (ADAMS Accession No. ML24214A023), NRC staff accepted EPRI Report 3002028939 for review.

The NRC staff in the Mechanical Engineering & Inservice Testing Branch (EMIB) and Long-Term Operations and Modernization Branch (ELTB) in the Division of Engineering and External Hazards (DEX), the Vessels Internal Branch (SFNB) in the Division of New and Renewed Licenses (DNRL), and the Probabilistic Risk Assessment (PRA) Licensing Branch A (APLA) in the Division of Risk Assessment (DRA) is in the process of reviewing your application. Based on our review, the NRC staff has identified the attached final requests for additional information (RAIs).

These requests for additional information were discussed with you, and a mutually agreeable date for the response is as soon as reasonably possible, but no later than 30 days from the date of this email.

If you have any questions, please contact me by e-mail Lois.James@nrc.gov.

Sincerely, Lois M. James, Senior Project Manger

ML25129A086 (pkg); ML25129A089 (email); ML25129A090 (RAIs)

• via email NRR-106 OFFICE NRR/DORL/LLPB/PM NRR/DEX/EIMB/BC NRR/DEX/ELTB/BC NRR/DNRL/NVIB/BC NAME LJames SBailey PKoch (A)

MMitchell DATE 05/13/2025 05/13/2025 n/a 05/13/2025 OFFICE NRR/DRA/APLA/BC DORL/LLPB/BC DORL/LLPB/PM NAME BPascarelli JRankin (A)

LJames DATE 04/29/2025 05/19/2025 05/19/2025