ML21131A242
| ML21131A242 | |
| Person / Time | |
|---|---|
| Issue date: | 06/03/2021 |
| From: | Victor Cusumano, Shilp Vasavada, Sunil Weerakkody NRC/NRR/DORL/LPL2-1, NRC/NRR/DRA, NRC/NRR/DSS |
| To: | |
| Miller E, NRR/DORL | |
| Shared Package | |
| ML21131A240 | List: |
| References | |
| Download: ML21131A242 (5) | |
Text
Observation Public Meeting between NRC & NEI June 3rd, 2021 Sunil Weerakkody, Senior Level Advisor Shilp Vasavada, Chief (A), PRA Licensing Branch B Division of Risk Assessment Office of Nuclear Reactor Regulation Victor Cusumano, Chief Technical Specifications Branch Division of Safety Systems Office of Nuclear Reactor Regulation 1 Public Meeting - June 3, 2021
Purpose:
Discuss Technical Specification changes to TSTF-505 that would allow licensees to incorporate RG 1.200, Revision 3, in their TSTF-505 program.
2 Public Meeting - June 3, 2021
CONTEXT
- December 2020: NRC issued Revision 3 to RG 1.200 (ADAMS Accession No. ML20238B871) endorsing NEI 17-07 (ML19241A615) and PWROG-19027 (ML20212L660).
- March 25, 2021: NEI requested NRC staff to provide comments on draft TSTF-579-T. (ML21091A218)
- May 10, 2021: To enable a constructive discussion with the TSTF, the NRC staff transmitted via Email a publicly available document that describes a draft risk-informed completion time program technical specifications (TS) (ML21110A033);
- May 26, 2021: NEI and TSTF transmitted their comments (ML21153A118, 6/2/2021)
- Next three slide will use information provided in ML21110A033 and ML21153A118 to discuss industry feedback and staff views.
NOTE: Staff input to TSTF-579 does not constitute a pre-approval of that TSTF-T traveler. RG 1.200 provides formal staff views on newly developed methods. The license amendment review process will be used to evaluate alternative TSTF-505 technical specifications on a plant specific basis.
3 Public Meeting - June 3, 2021
DRAFT RISK-INFORMED COMPLETION TIME PROGRAM TS (ADAMS Accession No. ML21110A033)
(e) A RICT must be calculated using [list specific approaches used (e.g., internal events probabilistic risk assessment (PRA), fire PRA, addition of bounding seismic risk to RICT calculations, etc.)] based on the as-built, as-operated, and as-maintained plant. PRA models used to calculate a RICT shall be maintained and upgraded in accordance with processes described in Regulatory Positions C.1, C.2, C.3, and C.4 in Regulatory Guide (RG) 1.200, Revision 3, Acceptability of Probabilistic Risk Assessment Results for Risk- Informed Activities.
(f) Use of any newly developed methods, as defined in RG 1.200, Revision 3, must meet all applicable review requirements in Tables 1-7.2-2 through 1-7.2-7 of Pressurized-Water Reactor Owners Group (PWROG)-19027-NP, Revision 2, Newly Developed Method Requirements and Peer Review, in accordance with the process in NEI 17-07, Revision 2, Performance of PRA Peer Reviews Using the ASME/ANS PRA Standard. The peer review report described in Section 9.1 of NEI 17-07, Revision 2 for both the acceptability and implementation of the newly developed method must be available to the NRC for oversight and inspection activities.
(g) A summary report, describing the newly developed method implementation, must be submitted in accordance with Section 5.6.x.
4 Public Meeting - June 3, 2021
DRAFT RISK-INFORMED COMPLETION TIME PROGRAM TS (ADAMS Accession No. ML21110A033) (Cntd.)
5.6. x, RICT Program Newly Developed Method PRA Upgrade Reporting Requirement A summary report describing the newly developed method and its implementation shall be submitted to the NRC following a PRA upgrade unless it has already been submitted to the NRC by a licensee.
A summary report shall also be submitted if the licensee uses an already submitted newly developed method with exceptions, deviations, or clarifications from the precedent.
The summary report must be submitted following a PRA upgrade associated with a newly developed method prior to using that method in the RICT program or within 60 days after completing the focused peer review, whichever date occurs sooner. The summary report shall describe the scope of the upgrade and shall include:
- The PRA models upgraded, and the newly developed method used;
- A description of the acceptability of the newly developed method consistent with Section5.2 of PWROG-19027-NP, Revision 2, Newly Developed Method Requirement s and Peer Review;
- All open finding and how those findings from the newly developed method implementation and how those findings were resolved or demonstrated not to have a significant impact on the PRA; and
- All changes to key assumptions related to the newly developed method or its implementation.
5 Public Meeting - June 3, 2021