ML091750226
| ML091750226 | |
| Person / Time | |
|---|---|
| Site: | Limerick, LaSalle  |
| Issue date: | 07/07/2009 |
| From: | Sands S Plant Licensing Branch III |
| To: | Exelon Generation Co |
| Sands S,NRR/DORL, 415-3154 | |
| References | |
| Download: ML091750226 (14) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 July 7, 2009 LICENSEE:
Exelon Generation Company FACILITY:
LaSalle County Station, Units 1 and 2, and Limerick Generating Station, Units 1 and 2
SUBJECT:
SUMMARY
OF JUNE 18, 2009, PRE-APPLICATION MEETING WITH EXELON GENERATION COMPANY, LICENSE AMENDMENT REQUEST FOR LASALLE AND LIMERICK MEASUREMENT UNCERTAINTY RECAPTURE POWER UPRATES On June 18, 2009, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company (the licensee) at the NRC Headquarters, One White Flint North, 11555 Rockville Pike, Rockville, Maryland. The purpose of the meeting was to discuss a pre-application license amendment request (LAR) for the LaSalle County Station (LSCS), Units 1 and 2, and Limerick Generating Station (LGS), Units 1 and 2, Measurement Uncertainty Recapture (MUR) power uprates. A list of attendees is provided as.
The licensee presented information on the proposed LAR (See Enclosure 2). This presentation provided background, schedules, LAR quality, technical evaluations, and LAR key elements pertaining to the proposed LAR. The LAR key elements identified by the licensee were the steam dryer evaluation, fuel evaluations and Technical Specification Task Force-493 interim guidance (setpoint methodology). It was noted during the presentation that there is a linked Alternate Source Term (AST) license amendment for LSCS currently under NRC staff review, which is anticipated for approval in October 2009. The MUR LAR will use data resulting from the AST license amendment.
The licensee has requested a 1a-month review time for approval of proposed submittals (January 2010, for LSCS, and February 2010, for LGS).
The NRC staff and the licensee discussed the need to review past requests for additional information to assure quality LARs, and also if the fuel change mentioned for LGS will affect the technical specifications and require a license amendment. The NRC staff and the licensee discussed the need to consider reviewing current Topical Reports (TR) with the LAR submittal; specifically a new TR on transducers.
- 2 Members of the public were in attendance. Public Meeting Feedback forms were not received.
Please direct any inquiries to me at 301-415-3154, or SPS 1@nrc.gov.
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Step Sands, Project Manager Plant icensing Branch 111-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Dockets No. 50-352, 50-353, 50-373 and 50-374
Enclosures:
- 1. List of Attendees
- 2. Licensee Handout cc w/encl: Distribution via ListServ
LIST OF ATTENDEES June 18. 2009. Meeting with Exelon to discuss proposed Measurement Uncertainty Recapture License Amendment Request for Limerick and LaSalle Name Affiliation Phone S.Sands NRC/NRRlDORL 301-415-3154 P. Bamford NRC/NRRlDORL 301-415-2833 M. Mahoney NRC/NRRlDORL 301-415-3867 R. WolfQanQ NRC/NRRlADES/DCI/CPT 301-415-1624 W. Lyon NRC/NRRlDSS/SRXB 301-415-2897 L.Benton 1\\1 RC/NRRlAADB 301-415-1088 J. White NRC/NRRlAADB 301-415-3212 A. BoatriQht NRC/NRRlAADB 301-415-1501 P. ChunQ NRC/NRRlDC/EICB 301-415-2473 M. Hartzman NRC/NRRlDE/EMCB 301-415-2755 T. Alexion NRC/NRRlDPR 301-415-1326 I. Ahmed NRC/NRRlDE 301-415-3252 A. Russell (via telephone)
NRC/NRRlDPR 301-415-8553 D. Helker Exelon 610-765-5525 A. Haeger Exelon 630-657-3359 A. Javorik Exelon 630-657-3350 D. Galanis Exelon 630-657-3351 M. Jesse Exelon 610-765-5528 S. Shields Exelon 815-415-2811 S. Gamble Exelon 61 0-718-3404 J. Liggett Exelon 610-718-3023 R. PenderQraft Areva 434-832-2634 G. LonQoni WestinQhouse 412-374-5218 D. Forsyth Westinghouse 412-374-6638 P. Campbell GE Hitachi 202-637-4239 E. Schrull (via telephone)
GE Hitachi J. Ferrante Public 707-792-0449
Exelon Nuclear LaSalle County Station Limerick Generating Station Pre-AlWlication Meeting License Amendment Requests for Measurement Uncertainty Recapture Power Uprates June 18, 2009 ENCLOSURE 2
I
Introductions
v' Alex Javorik - Senior Director, Power Uprate v' Dean Galanis - Engineering Director, Power Uprate v' Michael Jesse - Licensing Manager, Power Uprate v' David Helker - Corporate Licensing v' Stephen Shields - LaSalle County Station, Regulatory Assurance v' Stan Gamble - Limerick Generating Station, Regulatory Assurance v' Allan Haeger - Licensing support v' David Forsyth - Westinghouse Electric Corporation v' Gianluca Longoni - Westinghouse Electric Corporation v' Edward Schrull-General Electric-Hitachi (via telephone)
Exelon@
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I Agenda
./ Background
./ Schedules
./ License amendment request (LAR) quality
./ Technical evaluations
./ LAR key elements
- Steam dryer evaluation
- Fuel evaluations
- TSTF-493 interim guidance (setpoint methodology)
./ Feedback Exelon@
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I
, Background
../ Exelon power uprates are managed by a dedicated project team, including technical, project management, and licensing personnel
../ Measurement Uncertainty Recapture (MUR) LARs for LaSalle County Station (LSCS) and Limerick Generating Station (LGS) are planned for 2010
../ LSCS, Units 1 and 2
- BWR/5, Mark II containment
- Current licensed thermal power - 3489 MWt
- 5% uprate approved in May 2000
- Caldon CheckPlus@ Leading Edge Flow Meter (LEFM) currently installed on Unit 1
../ LGS, Units 1 and 2
- BWR/4, Mark II containment
- Current licensed thermal power - 3458 MWt
- 5% uprates approved in January 1996 (U-1) and February 1995 (U-2)
Exelon@
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Schedules v" MUR LAR submittals
- LSCS - January 2010
- LSCS Unit 1 - Complete (February 2008)
- LSCS Unit 2 - March 2011
- LGS Unit 1 - April 2010
- LSCS - November 201 0
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LAR Quality v' LAR will meet criteria in NRC LIC-109, "Acceptance Review Pracedures"
Caldon LEFM topical reports (ER-80P, ER-157P) and NRC safety evaluation criteria
- Linked submittals LSCS alternative source term approval anticipated in October 2009
- Completeness of information Will provide cross-reference to guidance in RIS 2002-03, "Guidance on the Content of MUR Power Uprate Applications"
- Will incorporate responses to applicable requests for additional information for MURs since issuance of RIS 2002-03 Exelon@
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I Technical Evaluations
,/ Reactor safety evaluations
- LEFM calibration tests at Alden Labs LSCS commissioned and in service LSCS August 2009 LGS October 2009 LGS November 2009
,/ Grid stabiIity assessment
,/ Balance of plant (BOP) evaluations
- Preliminary equipment assessment completed Based on previous industry experience and station interviews Potential minor modifications to support reliable operation
- Detailed evaluations in progress Exelon@
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I Steam Dryer Evaluation
./ Will address industry EPU experience with acoustic excitation
./ Westinghouse will perform evaluation
- Use elements of Continuum Dynamics, Inc. approach applied successfully on all recent BWR extended power uprates (EPUs)
./ Major steps for MUR
- Initial acoustic screening Evaluate potential for resonance at uprated conditions
- Scale model testing Confirm results of acoustic screening
- Compare to plant results at current licensed thermal power (CLTP)
Install strain gauges on selected MSLs Instrument additional MSLs depending upon analytical/scale model test results
- No further action if results indicate no acoustic resonance potential
- Potential additional evaluations if flow velocities approach resonance regions Monitor MSL pressure fluctuations during MUR power ascension Acoustic circuit model and structural analysis Power ascension monitoring plan and limit curves These additional evaluations will confirm no acoustic excitation for MUR Exelon@
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Fuel Evaluations and Setpoints I '
v" Fuel evaluations
- LSCS - GE14 and AREVA fuel
- LAR will identify fuel-dependent evaluations performed, including methods, results, acceptance criteria
- LGS - GE fuel MUR evaluations will be performed on current GE14 cores for both units LGS will introduce GNF-2 fuel in the cycles following MUR approval o LGS April 2012 o LGS April 2011 v" TSTF-493, Setpoint Methodology
- Will comply with interim guidance for any revised technical specification setpoints Exelon@
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ML091750226 NRC-001 OFFICE DORULPL3-2/PM DORULPL3-2/LA DORULPL3-2/BC NAME SSands THarris SCampbell DATE 0717109 0717109 0717109