ML101160379

Summary of Closed Meeting with Nine Mile Point Nuclear Station, LLC to Discuss Proposed Extended Power Uprate (EPU) Steam Dryer Review and Analyses for Nine Mile Point, Unit No. 2

ML101160379
Person / Time
Site:	Nine Mile Point
Issue date:	04/27/2010
From:	Richard Guzman Division of Operating Reactor Licensing
To:
Guzman R, NRR/DORL, 415-1030
References
TAC ME1467
Download: ML101160379 (5)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 27, 2010 LICENSEE: Nine Mile Point Nuclear Station, LLC FACILITIES: Nine Mile Point Nuclear Station, Unit Nos. 1 and 2 SUB..IECT:

SUMMARY

OF CLOSED MEETING HELD WITH NINE MILE POINT NUCLEAR STATION, LLC TO DISCUSS PROPOSED EXTENDED POWER UPRATE (EPU) STEAM DRYER REVIEW AND ANALYSES FOR NINE MILE POINT, UNIT NO.2 (TAC NO. ME1467)

On March 18,2010, a closed meeting was held between the U.S. Nuclear Regulatory Commission (NRC) staff and representatives of Nine Mile Point Nuclear Station, LLC (NMPNS or the licensee), and their contractors from Continuum Dynamics, Inc. (CDI) at the NRC One White Flint North Building in Rockville, Maryland. The purpose of this meeting was to discuss the proposed changes to the licensee's steam dryer analyses supporting the NRC staff's request for additional information (RAI) letter dated March 10, 2010 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML100630108). The meeting was closed since the information discussed had been previously determined to contain proprietary commercial information and be withheld from public disclosure in accordance with Title 10 of the Code of Federal Regulations (10 CFR) 2.390. The purpose of this meeting summary is to briefly describe the meeting, identify the participants, and document the presentation slides.

NrvlPNS made a detailed presentation on its approach to address the NRC staff RAI questions related to its proposed EPU for Nine Mile Point, Unit NO.2 (NMP2). The staff observed that the proposed approaches appeared reasonable and comprehensive. Specifically, NrvlPNS discussed its proposed analysis and validation methods to address technical areas of NRC staff concern such as (1) revised dryer stress analysis results for EPU conditions based on certain dryer loads; (2) methodology of the acoustic circuit model (ACM) benchmarking based on Quad Cities Unit 2 (QC2) data; (3) meeting the minimum alternating stress ratio for all dryer components for the proposed EPU conditions; (4) explanation of peaks in the steam dryer loading at certain frequencies; (5) use of bump-up factors to estimate EPU loadinq; (6) method of estimating fatigue stresses at fillet weld locations; and (7) strain gage configuration between NMP2 and QC2.

At the conclusion of the meeting, the NRC staff and the licensee discussed outcomes of the meeting and agreed that:

(1) The licensee presented a reasonable approach to addressing the staff's RAI questions, (2) The licensee plans to respond to the staff's RAI questions within 60 days of the March 10,2010 letter.

-2 The staff requested that the licensee provide as much data and justification to support their proposed revised steam dryer analysis and associated validation methods to address concerns listed in the staff's RAlletter dated March 10, 2010.

The licensee's proprietary handouts presented at the meeting are located in ADAMS, Accession No. ML101100542, as a non-publicly available, official agency record. The enclosed documents are as follows: (1) agenda for the meeting and (2) the meeting attendance list.

Please direct any inquiries to me at (301) 415-1030, or Richard.Guzman@nrc.gov.

Sincerely, Richard V. Guzman, Senior Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Enclosures:

As stated Docket No. 50-410 cc: w/encls: Distribution via Listserv

Agenda for Closed Meeting U. S. Nuclear Regulatory Commission Conference Room: 0-6-B4 11555 Rockville Pike, Rockville, Maryland 20852 Thursday, March 18, 2010 9:00 am -12:30 pm PURPOSE: Nine Mile Point Nuclear Station, LLC (NMPNS) will present information concerning the proposed changes to its steam dryer analyses supporting the NRC staff's RAI letter dated March 10, 2010. This is a closed meeting as proprietary commercial information is being discussed.

Topic Led By 9:00 a.m. - 9:15 a.m. Opening Remarks NRC 9:15 a.m. - 9:30 a.m. NMPNS Remarks/Introduction NMPNS 9:30 a.m. - 11:30 a.m. NMPNS proposed approach using NIVIPNS/CDI Re-benchmarked Acoustic Circuit Model 11:30 a.m. -12:00 p.m. NRC staff Q&A NRC/NMPNS 12:00 p.m. - 12:15 p.m. Summary/Next Steps NRC/NMPNS Enclosure 1

Attendance List for Closed Meeting

u. S. Nuclear Regulatory Commission Conference Room: 0-6-84 11555 Rockville Pike, Rockville, Maryland 20852 Thursday, March 18, 2010 9:00 am -12:30 pm Name Organization Nancy Salgado NRC Rich Guzman NRC Kamal Manoly NRC Meena Khanna NRC Chakrapani Basavarju NRC Alexander Tsirigotis NRC Andy DuBouchet NRC Tom Alexion NRC Stewart Bailey NRC Gerri Fehst NRC Steve Hambric Argonne National Laboratory / Penn State Joseph Pacher NMPNS Theresa Darling NMPNS John Dosa NMPNS George Inch NMPNS Dale Goodney NMPNS Alan Bilanin CDI Milton Teske CDI Alex Boschitsch CDI Denzel Housley Tennessee Valley Authority / Browns Ferrry William Bentley Tennessee Valley Authority / Browns Ferrry Marco A. Sanchez La Comision Federal de Electricidad /

Laguna Verde Robert Carter Electric Power Research Institute Steve Hammer Xcel Energy (Xcel) / Northern States Power Minnesota (NSPM) / Monticello Pablo Ruiz Lopez CNSNS/Mexico Victor Gonzalez Mercado CNSNS/Mexico Conference Line Vik Shah Argonne National Laboratory Samir Ziada McMaster University Peter Tam NRC David R. Forsyth Westinghouse Kurt Schaefer Xcel / NSPM / Monticello Randal Rippy Xcel / NSPM / Monticello Enclosure 2

' ML101160379 *Concurrence via e-mail OFFICE LPL1-1/PM LPL1-1/LA LPL1-1/BC NAME RGuzman SLittle* NSalgado DATE 4/27/10 04/27/10 4/27/10