ML20301A975
| ML20301A975 | |
| Person / Time | |
|---|---|
| Site: | 99902037 |
| Issue date: | 06/22/2021 |
| From: | Leslie Fields Licensing Processes Branch |
| To: | Dennis Morey Licensing Processes Branch |
| Fields L | |
| References | |
| Download: ML20301A975 (5) | |
Text
June 22, 2021 MEMORANDUM TO: Dennis C. Morey, Chief Licensing Processes Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation FROM:
Leslie C. Fields, Senior Project Manager /RA/
Licensing Processes Branch Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
SUBJECT:
SUMMARY
OF MAY 18, 2020, CLOSED MEETING WITH THE PRESSURIZED WATER REACTOR OWNERS GROUP TO DISCUSS EXCESSIVE WEAR IN THE CONTROL ROD STATIONARY GRIPPER On May 18, 2020, the U.S. Nuclear Regulatory Commission (NRC) staff held a closed meeting with representatives from the Pressurized Water Reactor Owners Group (PWROG) to discuss recent issues related to excessive wear in the control rod stationary gripper. The NRC staff requested the meeting based on staffs recent observation of excessive wear on stationary grippers and to determine if a root cause has been identified. This was a closed meeting due to the proprietary nature of the conversation.
Meeting topics included those relating to thermal sleeve and driveline degradation including:what are the potential causes of latch assembly wear, and do these affects lead to broader issues?what is the relationship, if any, with thermal sleeve wear?are there any mechanisms causing assembly wear and thermal sleeve wear that could lead to an unidentified result that might be a safety issue?
In the opening remarks, PWROG stated that it has formed a thermal sleeve degradation focus group earlier this year which includes members of PWROG, Electric Power Research Institute (EPRI), and other industry vendors. The purpose of the focus group is to review thermal sleeve degradation and develop guidance and tools for industry. One product developed includes NEI-0308, "Guidelines for the Management of Materials Issues" (Agencywide Documents Access and Management System (ADAMS) Accession No. ML19079A256).
CONTACT:
Leslie C. Fields, NRR/DORL (301) 415-1186
During the conclusion of the meeting, PWROG representatives stated that they would provide the NRC the thermal sleeve degradation focus group schedule of 2020 activities. The NRC staff requested to be informed about future updates and conclusions associated with excessive wear in the control rod stationary gripper. The meeting notice and agenda are available in ADAMS at Accession No. ML20126G527. Enclosed is a list of all meeting attendees who participated in the meeting via Skype. No presentation slides were presented at the meeting.
Docket No. 99902037
Enclosure Nuclear Regulatory Commission Closed Meeting with the Pressurized Water Reactor Owners Group Excessive Wear in Control Rod Stationary Gripper May 18, 2020 Attendance List Name Organization Email Leslie Fields NRC leslie.fields@nrc.gov Joshua Kaizer NRC joshua.kaizer@nrc.gov Robert Beaton NRC robert.beaton@nrc.gov Scott Krepel NRC scott.krepel@nrc.gov Robert Lukes NRC robert.lukes@nrc.gov David Rudland NRC david.rudland@nrc.gov Anna Bradford NRC anna.bradford@nrc.gov Robert Caldwell NRC robert.caldwell@nrc.gov Joseph Donoghue NRC joseph.donoghue@nrc.gov Maryjane Ross-Lee NRC maryjane.ross-lee@nrc.gov James Hickey NRC james.hickey@nrc.gov Robert Krsek NRC robert.krsek@nrc.gov Allen Hiser NRC allen.hiser@nrc.gov Bryan Wilson Westinghouse wilsonbm@westinghouse.com Jim Andrachek Westinghouse andracjd@westinghouse.com Chad Holderbaum Westinghouse holdercm@westinghouse.com James Molkenthin Westinghouse molkenjp@westinghouse.com Anthony Nowinowski Westinghouse nowinowa@westinghouse.com Benjamin Leber, Westinghouse leberba@westinghouse.com Nicholas Szweda Westinghouse szwedana@westinghouse.com Jay Boardman Westinghouse boardmjd@westinghouse.com Richard O'Neill Westinghouse oneillrp@westinghouse.com Gregory Falvo Westinghouse falvoge@westinghouse.com Heather Malikowski Exelon heather.malikowski@exeloncorp.com Name Organization Email Mark Honeycutt Duke Energy mark.honeycutt@duke-energy.com Tim Wells Southern Co.
tgwells@southernco.com Ken Lowery Southern Co.
kglowery@southernco.com Otis Seals Southern Co.
oseals@southernco.com Nicole Marie Latourelle Southern Co.
nmlatour@southernco.com Michael Powell APS michael.powell@aps.com Kyle Amberge EPRI kamberge@epri.com William Ellsworth PSEG william.ellsworth@pseg.com
ML20301A975 (Summary)
- concurrence via e-mail OFFICE NRR/DORL/LLPB/PM*
NRR/DORL/LLPB/LA*
NRR/DORL/LLPB/BC NRR/DORL/LLPB/PM*
NAME LFields DHarrison DMorey LFields DATE 10/27/2020 10/30/2020 12/16/2020 6/22/2021