ML21034A554
| ML21034A554 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/08/2021 |
| From: | Angela Wu NRC/NRR/DNRL/NLRP |
| To: | Burchfield J Duke Energy Carolinas |
| Wu A - NRR/DNRL/NLRP | |
| Shared Package | |
| ML21034A553 | List: |
| References | |
| ML19267A026 DNRL-21-0016 | |
| Download: ML21034A554 (5) | |
Text
February 8, 2021 J. Ed Burchfield, Jr.
Site Vice President Oconee Nuclear Station Duke Energy Carolinas, LLC 7800 Rochester Highway Seneca, SC 29672-0752
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3, SUBSEQUENT LICENSE RENEWAL APPLICATION - PUBLIC MEETING
SUMMARY
OF PRE-SUBMITTAL MEETING
Dear Mr. Burchfield:
By letter dated September 24, 2019 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML19267A026), Duke Energy Carolinas, LLC (Duke Energy, or the applicant), submitted a letter of intent to submit a subsequent license renewal application (SLRA) for Oconee Nuclear Station (ONS), Units 1, 2, and 3.
On January 26, 2021, the U.S. Nuclear Regulatory Commission (NRC, or the staff) held a public meeting with Duke Energy to discuss the expected content of the upcoming submittal of the SLRA for ONS. The slides for the staff presentation are available at ADAMS Accession No. ML21034A555, and the slides for the applicants presentation are available at ADAMS Accession No. ML21034A556.
The NRC staff began with a brief overview of the subsequent license renewal (SLR) process.
The process consists of two tracks: the environmental review and the safety review. An environmental pre-submittal meeting was held on October 27, 2020, while this meeting focused on the safety review. During the meeting, the staff shared a tentative review schedule. For an application submission date of March 31, 2021, the final licensing decision is estimated for November 2022. For the Oconee SLRA, the NRC staff has incorporated process improvements and lessons learned from previous SLRA reviews, and as a result, will aim to issue one single safety evaluation report, in support of one single meeting with the Advisory Committee on Reactor Safeguards.
Duke Energy then began their presentation with a description of ONS, highlighting that a measurement uncertainty recapture power uprate license amendment request (LAR) was submitted for ONS on February 19, 2020. The LAR was approved by the NRC staff on January 26, 2021 (ADAMS Accession No. ML20335A001). The ONS initial license renewal application was submitted to the NRC on July 7, 1998 and was approved on May 23, 2000.
In the development of the ONS SLRA, Duke Energy used contemporary guidance, leveraged lessons learned, and participated in peer reviews from previous SLRA submittals. The ONS application is currently under peer review. In support of the NRC review, the applicant will
J. Burchfield populate a CERTREC Electronic Reading Room Portal and support project calls, audits, and ensure responses to NRC information requests are provided on schedule.
Duke Energy continued to provide an overview of the integrated plant assessment, in particular, sharing that the scoping and screening and aging management review aspects were conducted using a methodology that is consistent with current standards. The applicant stated that ONS will have a high level of aging management review line item consistency with the Generic Aging Lessons-Learned Report (GALL-SLR, Volumes 1 and 2, ADAMS Accession Nos.
ML17187A031 and ML17187A204).
ONS is expected to have a total of 48 aging management programs (AMPs), all of which were developed to maximize consistency with the GALL-SLR. Of the 48 AMPs, 34 are existing while 14 are new and not a part of their initial license renewal. A total of 21 AMPs are expected to be consistent with the GALL-SLR, 18 AMPs expected to be consistent with enhancements, 3 AMPs expected to be consistent with exceptions, and 5 AMPs expected to be consistent with exceptions and enhancements. ONS is expected to have one plant-specific AMP: Secondary Shield Wall Tendons. ONS will not require the High Voltage Insulator AMP referenced in GALL-SLR, and the structural AMPs will address alkali-silica reaction (ASR) and irradiation of concrete.
On June 24, 2020, the NRC issued updated aging management criteria for the electrical, structural, and mechanical portions of the subsequent license renewal guidance, in the form of draft interim staff guidance (ISG) documents (ADAMS Accession No. ML20160A004). On July 17, 2020, the NRC issued an additional draft ISG for reactor vessel internal components for pressurized water reactors (ADAMS Accession No. ML20156A343). On January 11, 2021, the NRC staff issued the final reactor vessel internal ISG (ADAMS Accession No. ML20217L203).
During their presentation, Duke Energy indicated that the applicable AMPs reference the draft versions of all four ISGs.
Moving along, the applicant continued the presentation with an overview of the ONS time limited aging analyses (TLAAs). Duke Energy stated that the ONS application is expected to include a total of 42 TLAAs and proceeded to discuss the reactor vessel and metal fatigue TLAAs in further detail. Of the 42 TLAAs, the only new TLAA is associated to reactor internals materials and Materials Reliability Program (MRP) Report 1016596 (MRP-227), Pressurized Water Reactor Internals Inspection and Evaluation Guidelines. The applicant does not plan on submitting any unapproved topical reports, but the ONS SLRA will contain proprietary information that will be classified properly upon submission.
To close, Duke Energy noted that the ONS application remains to be on schedule for a submission date of Quarter 1 of 2021.
During the NRC/Duke question and answer (Q&A) portion of the meeting, the staff had three questions related to Slide #16 of the applicants presentation, in particular, the bullet stating the following: Structural AMPs address ASR and irradiation of concrete. First, the staff inquired on the general approach taken in the ONS SLRA regarding ASR and irradiation of concrete. To this, Duke Energy stated that the general approach is that the AMPs look for indications of these aging effects. Following the initial question, the staff continued: With regard to irradiation of concrete, does that mean [ONS] exceeded the fluence/dose threshold limits in the SRP-SLR and propose to manage it by actions in the AMPs? Duke Energy indicated that the details would be provided in the application. Lastly, the staff questioned whether the ONS application also addresses irradiation effects on reactor vessel steel supports. In response, the applicant
J. Burchfield confirmed that the SLRA addresses irradiation effects on reactor vessel steel supports, but it was not included in the presentation slides.
Additionally, the NRC staff offered to walk through the final reactor vessel internal ISG (ADAMS Accession No. ML20217L203) with the applicant. The applicant expressed appreciation in the offer and planned to further communicate with the NRC license renewal project manager on the potential public meeting in the near future. Following the meeting, the NRC staff clarified that a public meeting for technical discussion would normally be initiated and requested by the applicant. Duke Energy communicated that a public meeting would not be requested at this time and that they will continue to engage with the NRC regarding the ISG process.
Furthermore, the NRC staff noted that in previous SLRA reviews, the staff found it beneficial when applicants offered a demonstration of the electronic portal and asked if Duke Energy would be willing to do the same for the ONS SLRA. In response, the applicant agreed to offer a demonstration of the electronic portal and will coordinate with the NRC license renewal project manager on the timing of the demonstration.
During the public Q&A portion of the meeting, Mr. Paul Gunter of Beyond Nuclear had four questions for the NRC staff. First, Mr. Gunter asked when the ONS application will be available to the public. To this, the NRC staff replied that applications are normally made publicly available 10 days after receipt of the application, following a sensitive unclassified nonsafeguards information (SUNSI) and proprietary review by the staff. However, due to the global pandemic, the NRC staff is solely relying on electronic submissions through ADAMS, which may delay the process of making the application publicly available. As a follow-up question, Mr. Gunter asked whether the application will be available by spring of 2021. To that, the NRC staff replied that the delay caused by COVID-19 will not be months, and the application should be publicly available by springtime.
Furthermore, Mr. Gunter asked when members of the public could submit a request for a hearing. Upon acceptance of the application, members of the public have an opportunity to request a hearing. Lastly, Mr. Gunter asked if the presentations by the NRC staff and Duke Energy will be available in ADAMS. In response, the staff confirmed that both sets of presentations will be available with the meeting summary, which will be issued no later than 30 business days following the meeting.
If you have any questions, please feel free to contact me at Angela.Wu@nrc.gov.
Sincerely,
/RA/
Angela Wu, Project Manager License Renewal Projects Branch Division of New and Renewed Licenses Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
List of Attendees
J. Burchfield
SUBJECT:
OCONEE NUCLEAR STATION, UNITS 1, 2, AND 3, SUBSEQUENT LICENSE RENEWAL APPLICATION - PUBLIC MEETING
SUMMARY
OF PRE-SUBMITTAL MEETING DATED: FEBRUARY 8, 2021 DISTRIBUTION E-MAIL PUBLIC RidsNrrDmlr Resource RidsNrrPMOconee Resource AWu, NRR/DNRL LGibson, NRR/DNRL RElliott, NMSS/REFS ABradford, NRR/DNRL BCaldwell, NRR/DNRL SWilliams, NRR/DORL MMarkley, NRR/DORL DRoth, OGC MMcCoppin, OEDO SBurnell, HQ/OPA LWilkins, OCA DMcIntyre, HQ/OPA DScrenci, RI/OPA JPelchat, RII/FCO ELea, RII/FCO JNadel, RII/DRP JBaptist, RII/DRS ADAMS Accession Number: ML21034A554 *via e-mail NRR-106 OFFICE NRR/DNRL/NLRP/PM NRR/DNRL/NLRP/LA NAME AWu* YEdmonds*
DATE 2/1/21 2/8/21 OFFICE NRR/DNRL/NLRP/BC NRR/DNRL/NLRP/PM NAME LGibson* AWu*
DATE 2/8/21 2/8/21 OFFICIAL RECORD COPY
List of Attendees All attendees participated remotely. Those with an asterisk (*) presented.
NRC Attendees: Angela Wu*
Brian Allik On Yee Isaac Anchondo-Lopez Matthew Yoder Michael Benson Steven Bloom Duke Energy (and Contractors) Attendees:
Anna Bradford* Ed Asbury Mathew Burton Paul Bessette (Morgan, Lewis & Bockius, LLP)
Bob Caldwell Richard Browder Joseph Colaccino David Skulina (Framatome)
David Dijamco Heather Galloway Thinh Dinh Reene Gambrell Robert Elliott Steven Graham Carolyn Fairbanks Mark Hager Bart Fu Lori Hekking James Gavula Arun Kapur Lauren Gibson* Mikayla Kreuzberger Hipo Gonzalez David Lee Raul Hernandez Tracey LeRoy Allen Hiser David Morris Keith Hoffman Casey Muggleston Naeem Iqbal Mark Rinckel (Framatome)
Christopher Jackson Daniel William Roberts Lois James Joyce Roberts Joel Jenkins Chris Saville Marieliz Johnson Rita Sipe Jeanne Johnston Michelle Spak Roger Kalikian Albert Spear III Paul Klein Joe Terrell Bryce Lehman James Thornton Gregory Makar Erik Wagner Matthew McConnell Matthew Walker James Medoff Gerhald Wald Jeff Mitchell Todd Grant*
Duc Nguyen Paul Guill*
Ali Rezai Rounette Nader*
David Rudland Greg Robison*
Mo Sadollah Angelo Stubbs Public Attendees:
Christopher Sydnor Paul Gunter, Beyond Nuclear Leslie Terry George Thomas Other Attendees:
John Tsao Additional unidentified members of the public Shilp Vasavada and/or industry attended the meeting.
Brian Wittick Enclosure