ML22311A089

Meeting Between NRC Staff and EPRI to Discuss the Process for Reviewing Technical Report MRP-227, Rev 2, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines

ML22311A089
Person / Time
Site:	Electric Power Research Institute
Issue date:	11/23/2022
From:	Lois James Licensing Processes Branch
To:	Ngola Otto Licensing Processes Branch
References
MRP-227, MRP-227, Rev 2, MRP-227, Revision 2, EPID L-2022-TOP-0029
Download: ML22311A089 (1)

Text

November 23, 2022 MEMORANDUM TO:

Ngola A. Otto, Acting Chief Licensing Projects Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM:

Lois M. James, Senior Project Manager

/RA/

Licensing Projects Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

SUBJECT:

MEETING BETWEEN NUCLEAR REGULATORY COMMISSION STAFF AND ELECTRIC POWER RESEARCH INSTITUTE TO DISCUSS THE PROCESS FOR REVIEWING TECHNICAL REPORT MRP-227, REVISION 2, MATERIALS RELIABILITY PROGRAM: PRESSURIZED WATER REACTOR INTERNALS INSPECTION AND EVALUATION GUIDELINES (EPID L-2022-TOP-0029)

On November 7, 2022, the U.S. Nuclear Regulatory Commission (NRC) staff met with representatives from the Electric Power Research Institute (EPRI) to discuss the process for reviewing Technical Report MRP-227, Revision 2, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines. The meeting summary is enclosed as Enclosure 1 and the list of attendees is enclosed as Enclosure 2.

If you have any questions or comments, please contact me via email at Lois.James@nrc.gov.

CONTACT: Lois M. James, NRR/DORL 301-415-3306 Docket Nos. 99902021

Enclosures:

1. Meeting Summary

2. List of Attendees

U.S. Nuclear Regulatory Commission Public Meeting Summary

Title:

U.S. Nuclear Regulatory Commission (NRC) Staff Meeting with Electric Power Research Institute (EPRI) Representatives to Discuss the Process for Reviewing Technical Report MRP-227, Revision 2, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines Date of Meeting: November 7, 2022, 2:00 pm - 3:00 pm Location: Webinar Type of Meeting: This was an Observation Meeting. The attendees had an opportunity to observe the NRC performing its regulatory function or discussing regulatory issues. The attendees had an opportunity to ask questions of the NRC staff and to make comments about the issues discussed following the business portion of the meeting; however, the NRC is not actively soliciting comments towards regulatory decisions at this meeting.

Purpose of the Meeting:

To Discuss the Process for Reviewing Technical Report MRP-227, Revision 2, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines.

General Details:

The NRC staff held an observational meeting with the EPRI representatives to discuss the process for reviewing Technical Report MRP-227, Revision 2, Materials Reliability Program:

Pressurized Water Reactor Internals Inspection and Evaluation Guidelines. The meeting began at 2:00 pm and ended 2:35 pm. There were nine NRC staff members, three EPRI, sixteen members of industry, and no members of the public or individuals who did not identify their affiliation. The meeting began with introductions of the NRC staff, EPRI representatives, and industry staff.

Summary of the Meeting:

The NRC staff began the meeting by describing the history of its review of Revision 2 of Technical Report MRP-227, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines. The NRC staff accepted MRP-227, Revision 2, for review in the summer of 2022 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22145A401). The NRC staff opted for a Standard Review in accordance with the Office of Nuclear Reactor Regulation Office Instruction LIC-500, Topical Report Process (ADAMS Accession No. ML20247G279) which includes the following steps:

acceptance review, regulatory audit, request for additional information (RAI),

a draft safety evaluation (SE),

final SE, and version -A TR with staff verification.

The Standard Review was chosen because:

Number and the complexity of changes in MRP-227, Revision 2, versus MRP-227, Revision 1-A Methodology in MRP-227, Revision 2, assesses aging over an 80-year service period versus MRP-227, Revision 1-A, only assessed aging over a 60-year service period Potential logistics issues Bases for some component-specific screening or inspection and evaluation have been revised in MRP-227, Revision 2, versus MRP-227, Revision 1-A Revisions to Applicant/Licensee Action Item Resolution Referencing of WCAP-17096-NP-A, Revision 2 MRP-227, Revision 2, discusses use of MRP-211 and BWRVIP-100, Revision 1-A, lower bound fracture toughness value methods MRP-227, Revision 2, references Crack Growth Model in EPRI Report No. 3002003103 EPRI representatives pointed out an error on presentation Slide 5. The reference to EPRI letter MRP 2021-019 was incorrect. The correct reference is EPRI BWRVIP 2021-030, Electric Power Research Institute - 2021-030, Potential Non-Conservatism in EPRI Report, BWRVIP-100, Rev. 1-A, 3002008388 and Impacted BWRVIP Reports (ADAMS Accession No. ML21084A164).

Public Participation Themes:

No member of the public spoke during the meeting.

Attachments:

Meeting description and agenda - ADAMS Accession No. ML22300A059 NRC slide presentation-ADAMS Accession No. ML22311A080

U.S. Nuclear Regulatory Commission Public Meeting Attendees

Title:

U.S. Nuclear Regulatory Commission (NRC) Staff Meeting with Electric Power Research Institute (EPRI) Representatives to Discuss the Process for Reviewing Technical Report MRP-227, Revision 2, Materials Reliability Program: Pressurized Water Reactor Internals Inspection and Evaluation Guidelines NRC Participants Name Affiliation David Dijamco NRC Allen Hiser NRC Lois James NRC James Medoff NRC Carol Moyer NRC David Rudland NRC John Tsao NRC Christopher Tyree NRC Dan Widrevitz NRC EPRI Participants Name Affiliation Kyle Amberge EPRI James Cirilli EPRI Randy Stark EPRI Industry Participants Name Affiliation Dale E Turinetti American Electric Power Ramon Cruz Constellation Nuclear Kemper Young Constellation Nuclear Sarah DavidSaver Framatome Inc. (Framatome)

Ryan Hosler Framatome Stacy Yoder Framatome Shane Webb NextEra Energy Kris Garg Public Service Enterprise Group Corey Thomas Southern Nuclear Company Tyler Bro Westinghouse Electric Company (WEC)

Geoffrey Campbell WEC Ernest Deemer WEC Joshua K. McKinley WEC James P Molkenthin WEC Tim L. OConnor WEC Tyler Whaley WEC

ML22311A089

• via email NRR-106 OFFICE DORL/LLPB/PM DORL/LLPB/LA DNRL/NVIB/TR NAME LJames*

DHarrison JMedoff DATE 11/07/2022 11/10/2022 11/16/2022 OFFICE DNRL/NVIB/BC DORL/LLPB/BC DORL/LLPB/PM NAME DWidrevitz (A)

NOtto (A)

LJames DATE 11/16/2022 11/16/2022 11/23/2022