ML17041A366

Summary of 2/7/17 Public Teleconference with Southern Nuclear Operating Company to Discuss Vogtle Electric Generating Plant, Units 1 and 2, Risk-Informed Technical Specification License Amendment Request

ML17041A366
Person / Time
Site:	Vogtle
Issue date:	02/28/2017
From:	Geoffrey Miller Special Projects and Process Branch
To:	Markley M Plant Licensing Branch II
Miller G, NRR/DORL/LSPB, 415-2481
References
CAC ME9555, CAC ME9556
Download: ML17041A366 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 27, 2017 MEMORANDUM TO: Michael T. Markley, Chief FROM:

Plant Licensing Branch 11-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation G. Edward Miller, Project Manager /

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SUMMARY

OF FEBRUARY 7, 2017, PUBLIC MEETING WITH SOUTHERN NUCLEAR OPERATING COMPANY, INC., REGARDING LICENSE AMENDMENT REQUEST TO IMPLEMENT RISK-INFORMED TECHNICAL SPECIFICATION COMPLETION TIMES AT VOGTLE ELECTRIC GENERATING PLANT, UNITS 1 AND 2 (CAC NOS. ME9555 AND ME9556)

On February 7, 2017, the U.S. Nuclear Regulatory Commission (NRC) staff held a public teleconference 1 with staff from Southern Nuclear Operating Company, Inc. (SNC or the licensee). The purpose of the call was to discuss SNC's license amendment request to implement risk-informed Technical Specification Completion Times (RICT) for the Vogtle Electric Generating Plant, Units 1 and 2. Specifically, the discussion was focused on draft request for additional information (RAI) question 6 that was provided to SNC on January 24, 2017. 2 Following a January 26, 2017, 3 public meeting, the NRC staff modified the question to enhance clarity and reissued the draft question to SNC on February 3, 2017. 4 The NRC staff opened the meeting with a summary of RAI 6, which focuses on accounting for the risk of common-cause failure (CCF) during emergent equipment failures. In support of the meeting, SNC provided slides that discussed the process that would be followed in the event of an emergent equipment failure. 5 The NRC staff indicated that the preferred method, consistent with Regulatory Guide (RG) 1.177, Revision 1, "An Approach for Plant-Specific, Risk-Informed Decisionmaking: Technical Specifications," May 2011, 6 to address this issue would be to adjust the numerical RICT calculation to account for CCF until such a possibility had been eliminated.

Further, the NRC staff indicated that simply describing risk-management actions that could be taken to ameliorate CCFs would likely not be responsive to the concern. The NRC staff 1

The original meeting notice is available via the Agencywide Documents Access and Management System (ADAMS) under Accession No. ML17033A184.

2 The draft RAI is available under ADAMS Accession No. ML17027A018.

3 The meeting summary for the January 26, 2017, meeting is available under ADAMS Accession No. ML17030A428.

4 The revised draft RAI is available under ADAMS Accession No. ML17037A175.

5 The slides provided by SNC are available under ADAMS Accession No. ML17039A962.

5 RG 1.177 is available under ADAMS Accession No. ML100910008.

M. Markley indicated that alternate means of addressing the concern would be considered, but may take significant additional review resources and time to complete.

Although better understanding was reached, at the conclusion of the meeting, both parties agreed that additional interactions would be necessary. Another public meeting would be planned at a later date and noticed via the normal process.

No regulatory decisions were made at the meeting. Following the discussion, an opportunity was afforded to any other participants who wished to ask questions or make comments. No questions or comments were received.

Docket Nos. 50-424 and 50-425

Enclosure:

List of Attendees cc: Listserv

LIST OF ATTENDEES

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Enclosure

ML17041A366 *via e-mail OFFICE NRR/DORL/LSPB/PM NRR/DORL/LSPB/LA NRR/DRA/APLA/BC NAME GEMiller JBurkhardt SRosenberg DATE 2/24/2017 2/23/2017 2/24/2017 OFFICE NRR/DSS/STSB/BC NRR/DORL/LPL2-1/BC NRR/DORL/LSPB/PM NAME AKlein* MMarkley GE Miller DATE 2/15/2017 2/27/2017 2/27/2017