ML25023A092

E-mail - Draft Safety Evaluation Associated with EPRI Technical Report BWRVIP-100, BWR Vessel and Internals Project, Updated Assessment of the Fracture Toughness of Irradiated Stainless Steel for BWR Internal Components, Revision 2

ML25023A092
Person / Time
Site:	99902016
Issue date:	03/21/2025
From:	Lois James Licensing Processes Branch
To:	Bonifanti M, Palm N Electric Power Research Institute
Shared Package
ML25023A090	List: ML25023A092
References
BWRVIP-100, BWRVIP-100, Rev 2, BWRVIP-100, Revision 2, EPID L-2023-TOP-0018 (pre-fee), EPID L-2023-NTR-0005 (post-fee)
Download: ML25023A092 (1)

Text

1 Lois James From:

Lois James Sent:

Friday, March 21, 2025 8:24 AM To:

martin.bonifanti@constellation.com; npalm@epri.com Cc:

RidsNrrOd Resource; RidsNrrDnrl Resource; RidsNrrLADHarrison Resource; RidsNrrDorl Resource; RidsNrrDorlLlpb Resource; RidsACRS_MailCTR Resource; Lois James; Jennie Rankin; Angie Buford; Scott Krepel; David Rudland; Michael Benson; John Tsao; Steven Levitus; Joseph Messina; Christopher Brown; wmcgruder@epri.com; npalm@epri.com; bcarter@epri.com

Subject:

Draft Safety Evaluation Associated with EPRI Technical Report BWRVIP-100, BWR Vessel and Internals Project, Updated Assessment of the Fracture Toughness of Irradiated Stainless Steel for BWR Internal Components, Revision 2 (EPID L-2023-NTR-0005)

Martin Bonifanti, Constellation, BWRVIP Chairman Nathan Palm, EPRI, BWRVIP Program Manager Electric Power Research Institute 1300 West W.T. Harris Blvd Charlotte, NC 28262-8550

Dear Martin Bonifanti and Nathan Palm:

By letter dated July 11, 2023 (Agencywide Documents Access and Management System (ADAMS)

Accession No. ML23198A333), Electric Power Research Institute (EPRI) submitted BWRVIP-100, BWR Vessel and Internals Project, Updated Assessment of the Fracture Toughness of Irradiated Stainless Steel for BWR Internal Components, Revision 2, to the U.S. Nuclear Regulatory Commission (NRC) for review and approval. Revision 2 of BWRVIP-100 incorporates newly acquired test data from harvested reactor internals materials which may indicate a potential non-conservatism in BWRVIP-100, Revision 1-A, and reassess the relationship between fracture toughness and fluence. The NRC staff reviewed and accepted the technical report on September 14, 2023 (ADAMS Accession No. ML23214A047).

A copy of the draft safety evaluation (SE) has been placed in the box.com folder. Nathan Palm and Wynter McGruder has been given access to the folder. The draft SE is being provided for a proprietary information review. If EPRI provides comments on other areas, the NRC staff will exercise its discretion on whether to address those comments.

Pursuant to Section 2.390 of Title 10 of the Code of Federal Regulations (10 CFR), we have determined that the draft SE may contain proprietary information. If you believe that any information in the draft SE is proprietary, please identify such information line-by-line and define the basis pursuant to the criteria of 10 CFR 2.390. Use double brackets and yellow highlight to identify any

(( proprietary information )). Your response is due back to the NRC no later than 90 days from the date of this email.

Your response must be via a letter from an authorized individual. In addition, please provide an electronic redline/strikeout Word version of the SE either via email or the box.com folder. It helps expedite the NRC staff response to comments if EPRI provides in the formal transmittal and in a separate Word file, a table with the following columns: Comment No., Page No., and Line No.,

Comment Type (if comments other than proprietary information are provided (i.e., clarity, accuracy)),

ML25023A090 (nonpublic - pkg); ML25023A092 (public - email);

ML25023A096 (nonpublic - draft SE)

^via eConcurrence *via email NRR-106 OFFICE DORL/LLPB/PM DORL/LLPB/LA DNRL/NVIB/BC DSS/SFNB/BC NAME LJames^

DHarrison^

ABuford^

SKrepel*

DATE 02/04/2025 03/04/2025 03/06/2025 02/03/2025 OFFICE OGC (NLO)

DORL/LLPB/BC DORL/LLPB/PM NAME MCarpentier JRankin (A)

LJames DATE 03/20/2025 03/21/2025 03/21/2025