ML12265A256

Meeting Notice for a Closed Informational Conference with Entergy Corporation on Reactor Core Performance in Grand Gulf Nuclear Station

ML12265A256
Person / Time
Site:	Grand Gulf
Issue date:	09/20/2012
From:	Powers D Division of Reactor Safety IV
To:	Entergy Corp
References
Download: ML12265A256 (4)

Text

UNITED STATES NUCLEAR REG ULATO RY CO M M I SSI O N R E GI ON I V 612 EAST LAMAR BLVD, SUITE 400 ARLINGTON, TEXAS 76011-4125 September 20, 2012

SUBJECT:

CLOSED INFORMATIONAL CONFERENCE WITH ENTERGY CORPORATION ON REACTOR CORE PERFORMANCE IN GRAND GULF NUCLEAR STATION FACILITY: Grand Gulf Nuclear Station (GGNS)

DOCKET: 50-416 DATE & TIME: October 11, 2012 8:00 a.m. (CDT)

LOCATION: Echelon Auditorium Lobby, Echelon, 1340 Echelon Parkway, Jackson, Mississippi 39213 PURPOSE: Boiling water reactor fuel bundles are enclosed in fuel channels that direct coolant up through each fuel assembly and act as a bearing surface for control rods. The purpose of the meeting is to discuss the cause(s) of fuel channel distortion and understand predicted behavior during the current operating cycle.

CATEGORY: This meeting is closed to public observation because it will involve the discussion of proprietary information.

PARTICIPANTS: NRC Dr. Dale A. Powers, Senior Technical Analyst, TSB, DRS Robert C. Hagar, Acting Chief, Project Branch C, Division of Reactor Projects (DRP)

Richard L. Smith, Senior Resident Inspector, Grand Gulf Nuclear Station, DRP Dr. Dustin R. Reinert, Resident Inspector, Palo Verde Nuclear Generating Station, DRP Blake Rice, Resident Inspector, Grand Gulf Nuclear Station, DRP Paul M. Clifford, Senior Technical Advisor for Reactor Fuel, Division of Safety Systems, Office of Nuclear Regulation

Grand Gulf Station LICENSEE Michael Perito, GGNS Vice President, Operations Rex Putnam, Director, Engineering - NUC Fred Smith, Manager, Fuels and Analysis Scott Stanchfield, Supervisor, BWR Fuels Bob Carroll, Supervisor, Rx Engineering, GGNS David Smith, Senior Staff, BWR Fuels Jim Head, Senior Engineer, BWR Fuels Rita Jackson, Senior Licensing Specialist, GGNS MEETING CONTACT: Dr. Dale A. Powers, NRC Region IV 817-200-1195 Dale.Powers@nrc.gov

Enclosure:

Agenda

Grand Gulf Station Distribution for Grand Gulf E-Mail To:

NRC Attendees PMNS Mtg Announcement Coordinator Elmo.Collins@nrc.gov , Regional Administrator Art.Howell@nrc.gov , Deputy Regional Administrator Thomas.Blount@nrc.gov , Acting Director, DRS Kriss.Kennedy@nrc.gov, Director, DRP A.Wang@nrc.gov, Project Manager, NRR Allen.Howe@nrc.gov, Acting Deputy Director, DRP Pat.Louden@nrc.gov, Acting Deputy Director, DRS Victor.Dricks@nrc.gov , Public Affairs Officer Lara.Uselding@nrc.gov , Public Affairs Officer Silas.Kennedy@nrc.gov, Coordinator, OEDO Lisa.Quayle@nrc.gov , Administrative Assistant, RA Anita.Tannenbaum@nrc.gov , Administrative Assistant, DRA Vivian.Mehrhoff@nrc.gov , Administrative Assistant, DRS R:\REACTORS\GG 10-11-12 Meeting Notice ML12265A256 SUNSI Rev Compl. Yes No ADAMS Yes No Reviewer Initials: DAP Publicly Avail Yes No Sensitive Yes No Sens Type Initials: DAP RIV:DRS/TSB/STA C:TSB AC:DRP/PBC PAO Director/DRS DAPowers RLKellar RCHagar VDricks TBBlount not available /RA/ /RA/ /RA/ /RA/

9/17/12 9/18/12 9/19/12 9/20/12 OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax

PROPOSED AGENDA FOR CLOSED INFORMATIONAL CONFERENCE WITH ENTERGY CORPORATION ON REACTOR CORE PERFORMANCE IN GRAND GULF NUCLEAR STATION October 11, 2012 TOPIC LEAD Introductions and opening remarks NRC/Entergy Results of Root-Cause Evaluations of Fuel Channel Entergy distortion at GGNS Applied licensee/vendor/industry fuel channel distortion Entergy Management Guidelines Continued adequacy of GGNS TS LCO 3.13 (each control Entergy rod shall be operable) and 3.1.4 (Control Rod Scram times) in lieu of significant fuel channel distortion Comparison of GGNS core dimensional margins for control rod Entergy blade insertion (bundle-to-bundle and bundle-to-blade gap spacing) versus other BWR designs GGNS fuel channel supply vendor designs and relevant processing Entergy specifications (dimensions, alloy, texture, and heat treatment)

For the last two cycles For the current cycle GGNS fuel channel surveillances (rod settling) and results Entergy Completed during the last two cycles Completed during the last refueling outage Planned for the current cycle (including vendor-recommendations for augmentation given observation of slow to settle control blades)

GGNS fuel channel exposures and shuffle strategy in the core Entergy Over the past two cycles Predicted for the current cycle Overview comparison of fuel channel historical performance at Entergy GGNS versus other BWR plants, including RBS Predictions of GGNS fuel channel distortion in current (post-uprate) Entergy cycle, including methods and results Industry and vendor initiatives - research and material property Entergy changes to improve performance Closing Remarks Entergy/NRC Enclosure