ML13358A062

Summary of 12/16/13 Meeting with STP Nuclear Operating Co. to Discuss Revised Pilot Submittal and Request for Exemptions for a Risk-Informed Approach to Resolve Generic Safety Issue (GSI)-191 at South Texas Project, Units 1 and 2

ML13358A062
Person / Time
Site:	South Texas
Issue date:	01/14/2014
From:	Balwant Singal Plant Licensing Branch IV
To:
George A
References
TAC MF2400, TAC MF2401
Download: ML13358A062 (6)

Text

LICENSEE:

STP Nuclear Operating Company FACILITY:

South Texas Project, Units 1 and 2

SUMMARY

OF DECEMBER 16, 2013, PUBLIC MEETING WITH STP NUCLEAR OPERATING COMPANY TO DISCUSS THE LICENSE AMENDMENT TO USE A RISK-INFORMED APPROACH TO THE RESOLUTION OF GSI-191, "ASSESSMENT OF DEBRIS ACCUMULATION ON PWR SUMP PERFORMANCE" (TAC NOS. MF2400 AND MF2401)

On December 16, 2013, a public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of STP Nuclear Operating Company (STPNOC, the licensee), at NRC Headquarters, Rockville, Maryland. The meeting notice and agenda, dated December 5, 2013, are located in the Agencywide Documents Access and Management System (ADAMS) at Accession No. ML13330B222. The licensee's and NRC staff handouts from the meeting are available in ADAMS at Accession Nos. ML13352A142 and ML13352A124, respectively. A list of meeting attendees is provided in the Enclosure to this meeting summary.

The purpose of the meeting was for STPNOC to discuss major changes to its license amendment request (LAR) to use a risk-informed approach to the resolution of Generic Safety Issue (GSI)-191, "Assessment of Debris Accumulation on PWR [Pressurized Water Reactor]

Sump Performance," at South Texas Project, Unit 1 and 2 (STP). The LAR was submitted on June 19, 2013 (ADAMS Accession No. ML131750250). STPNOC provided a supplement to the LAR by letter dated November 13, 2013 (ADAMS Accession No. ML13323A128). During the meeting, STPNOC described to the NRC staff the major changes between the June 19 and November 13, 2013, submittals.

Meeting Summary The licensee provided the staff with a high-level overview of the information in the November 13, 2013, submittal, and how the changes from the original submittal dated June 19, 2013, affected the LAR. Specifically, the STPNOC representatives discussed the following revisions found in the November 13, 2013, submittal:

1.

Corrected discrepancies between the technical description presented in Volume 3 of the submittal and the quantitative implementation in the CASA Grande calculation.

2.

Several numerical changes, including CASAGrande input file changes and code level changes.

3.

Editorial changes across all three volumes of the submittal for consistency, as well as removal of sections that the licensee found to be supplementary to or unused in STP's analysis.

Following discussion of the revisions between STPNOC and the NRC staff, the staff presented a high-level schedule for the completion of its review. The staff's target date for completing the review is November of 2015.

Action Items The following action items resulted from the meeting:

1.

STPNOC took an action to make the corrective action report associated with the issues that were corrected by the November 13, 2013, submittal available for the staff to audit.

STPNOC indicated that it would likely make the report available to the staff at Westinghouse's offices in Rockville, Maryland, and would inform the staff when the document was available for staff review.

2.

STPNOC took an action to provide a cross-walk document highlighting all changes reflected in the November 13, 2013, submittal as compared to the June 19, 2013, submittal. The cross-wall document will be made available for staff review in Westinghouse's offices in Rockville, Maryland.

3.

The NRC staff took an action to identify the specific submittal references the staff requested to audit for the purposes of technical review. The list of specific references is required so that STPNOC can make arrangements to allow the staff to review the documents.

4.

The NRC staff and STPNOC took an action to make arrangements for publicly noticed meetings via teleconference the weeks of January 6, and January 20, 2014, to discuss issues associated with the review. The purpose of the publicly noticed calls would be to help the staff facilitate the development of the requests for additional information (RAis),

if needed.

5.

Both the NRC staff and STPNOC took an action to engage the Advisory Committee on Reactor Safeguards (ACRS) to begin preparations for a May 2014 ACRS subcommittee briefing on GSI-191 resolution. Arrangements include scheduling the briefing, drafting an agenda, and ensuring key personnel are available.

6.

STPNOC took an action to provide the staff with the updated slides used for the December 16, 2013, meeting. There were minor changes made to slides 17 and 25 that were discussed during the meeting. Additionally, STPNOC made a clarifying change to slide 20 that was discussed during the meeting. Subsequent to the meeting, STPNOC provided the revised slides to the staff, which are reflected in the slide package that is available in ADAMS.

Please direct any inquiries to me at 301-415-3016, or balwant.singal@nrc.gov.

Docket Nos. 50-498 and 50-499

Enclosure:

List of Attendees cc w/encl: Distribution via Listserv Sincerely,

~0-~'Q&~

~~gal, Senior-f:?roject Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

LIST OF ATTENDEES DECEMBER 16.2013. MEETING WITH STP NUCLEAR OPERATING COMPANY REGARDING RISK-INFORMED APPROACH TO RESOLUTION OF GSI-191 NAME Mike Murray Wayne Harrison Steve Blossom Ernie Kee Bruce Letellier**

Dominic Munoz**

Craig Sellers John H. Swailes Ronald W Holloway Gilbert Zigler*

Maurice Dingler*

Kip Walker*

Jeanette Leavitt*

Roger Anreasen*

Salim Parvez*

Jeffrery Weyhmiller*

Jeffrey Brown*

Paul Leonard*

Jeffrey Miller*

Jim Sande*

Seyed A. Reihani*

Lori A. Christensen*

David Pelton C.J. Fong Matt Yoder Paul Klein Marioly-Diaz Colon Ervin Geiger Steve Smith SOUTH TEXAS PROJECT. UNITS 1 AND 2 DOCKET NOS. 50-498 AND 50-499 TITLE ORGANIZATION Licensing Manager STP Nuclear Operating Company (STPNOC)

Licensing Manager STPNOC Project Manager STPNOC STPNOC Ali on Ali on Senior Project Manager ENERCON/Calvert Cliffs WMI/Calvert Cliffs Project Manager WCNOC Senior Engineer ENERCON WCNOC ENERCON Ali on Ameren AREVA Entergy APS Nextera Palisades Enercon University of Illinois Point Beach Branch Chief, Generic U.S. Nuclear Regulatory Commission Communications and Power Uprate (NRC)

Branch Reliability and Risk Analyst NRC Senior Chemical Engineer NRC Senior Materials Engineer NRC General Engineer NRC Senior Engineer NRC Reactor Systems Engineer NRC

• Partcipated via phone

• • Represented STPNOC Enclosure NAME TITLE John Stang Senior Project Manager Jeffrey Rikhoff Senior Environmental Scientist Timothy Collins Senior Technical Assistant Bruce Lin Mechanical Engineer Ashley Guzzetta Reactor Systems Engineer Steve Laur*

Senior Reliability and Risk Analyst Andrea George Project Manager Joe Sebrosky Senior Project Manager

• Partcipated via phone

• • Represented STPNOC ORGANIZATION NRC NRC NRC NRC NRC NRC NRC NRC

ML13358A062

• via email OFFICE NRR/DORLILPL4-1/PM NRR/DORL/LPL4-1/PM NRR/DORLILPL4/LA NAME AGeorge*

BSingal JBurkhardt DATE 1/6/14 1/8/14 1/2/14 OFFICE NRR/DSS/SSIB/BC NRR/DORLILPL4-1/BC NRR/DORL/LPL4-1/PM NAME JStang*

MMarkley BSingal DATE 1/9/14 1/14/14 1/14/14