ML24036A005

E-Mail - Final Request for Additional Information - BWRVIP-100, Revision 2, Updated Assessment of the Fracture Toughness of Irradiated Stainless Steel for Boiling Water Reactor (BWR) Internal Components

ML24036A005
Person / Time
Site:	99902016
Issue date:	02/12/2024
From:	Lois James Licensing Processes Branch
To:	Bonifanti M, Palm N Constellation Energy Generation, Electric Power Research Institute
References
BWRVIP-100, BWRVIP-100, Rev 2, EPID L-2023-TOP-0018, EPID L-2023-NTR-0005
Download: ML24036A005 (1)

Text

From:

Lois James To:

martin.bonifanti@constellation.com; Palm, Nathan Cc:

RidsNrrOd Resource; RidsNrrDnrl Resource; RidsNrrLADHarrison Resource; RidsNrrDorl Resource; RidsNrrDorlLlpb Resource; RidsACRS_MailCTR Resource; Lois James; Gerond George; Angie Buford; Scott Krepel; David Rudland; Michael Benson; John Tsao; Steven Levitus; Joseph Messina; wmcgruder@epri.com; npalm@epri.com; Carter, Bob

Subject:

Final Request for Additional Information - BWRVIP-100, Revision 2, Updated Assessment of the Fracture Toughness of Irradiated Stainless Steel for Boiling Water Reactor (BWR) Internal Components (EPID L-2023-NTR-0005)

Date:

Monday, February 12, 2024 3:16:51 PM 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

Mr. Bonifanti and Mr. 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 incorporations newly acquired test data from harvested reactor internals materials which may indicated a potential non-conservatism in BWRVIP-100, Rev. 1-A and reassess the relationship between fracture toughness and fluence. The staff reviewed and accepted the technical report on September 14, 2023 (ADAMS Accession No.ML23214A047).

The NRC staff in the Vessels Internal Branch (NVIB) in the Division of New and Renewed Licenses (DNRL) and in the Nuclear Methods and Fuel Analysis Branch (SFNB) in the Division of Safety Systems (DSS) 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).

The staffs request contains some proprietary materials. The proprietary contents are identified using a ((yellow highlighted, bolded, double bracketed)) text format. Consistent with the Commission proprietary withholding criteria in Section2.390 of Title10 of the Code of Federal Regulations (10CFR), the staff is protecting the identified proprietary material from public disclosure.

contains the proprietary version of the RAIs, and Enclosure 2 contains the redacted version of the RAIs. A copy of both Enclosures has been placed in the box.com folder. Nathan Palm and Wynter McGruder have been given access to the folder. This email and Enclosure 2 have been placed in ADAMS and will be publicly available on February 16, 2024.

These requests for additional information were discussed with Wynter McGruder, and a mutually agreeable date for the response is within 90 days from the date of this email.

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

Sincerely,

ML24036A003 (pkg); ML24036A005 (email); ML24036A006 (Enclosure 1 -

proprietary); ML24036A007 (Enclosure 2) +via RAI App *via email NRR-106 OFFICENRR/DORL/LLPB/PMNRR/DSS/SFNB/BCNRR/DNRL/NVIB/BCNRR/DORL/LLPB/BC NAME LJames SKrepel+

ABuford JTsao for*

GGeorge+

DATE 02/05/2024 01/19/2024 02/01/2024 02/05/2024 OFFICENRR/DORL/LLPB/PM

NAME LJames

DATE 02/12/2024