ML101240998

Acceptance of Requested Licensing Action Measurement Uncertainty Recapture Power Uprate Request and Standby Liquid Control System Modification

ML101240998
Person / Time
Site:	Limerick
Issue date:	05/06/2010
From:	Peter Bamford Plant Licensing Branch 1
To:	Pardee C Exelon Generation Co, Exelon Nuclear
Bamford, Peter J., NRR/DORL 415-2833
References
TAC ME3589, TAC ME3590, TAC ME3591, TAC ME3592
Download: ML101240998 (3)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555*0001 May 6, 2010 Mr. Charles Pardee President and Chief Nuclear Officer Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

LIMERICK GENERATING STATION, UNITS 1 AND 2 - ACCEPTANCE OF REQUESTED LICENSING ACTION RE: MEASUREMENT UNCERTAINTY RECAPTURE POWER UPRATE REQUEST AND STANDBY LIQUID CONTROL SYSTEM MODIFICATION (TAC NOS. ME3589, ME3590, ME3591, AND ME3592)

Dear Mr. Pardee:

By letter dated March 25, 2010, (Agencywide Documents Access and Management System (ADAMS) Accession Number ML100850380), Exelon Generation Company, LLC (Exelon) submitted a license amendment request for Limerick Generating Station (LGS), Units 1 and 2.

The proposed amendment would revise the operating license and technical specifications to implement an increase of approximately 1.65% in rated thermal power from the current licensed thermal power of 3458 megawatts thermal (MWt) to 3515 MWt. The proposed changes are based on increased feedwater flow measurement accuracy, which will be achieved by utilizing Cameron International (formerly Caldon) CheckPlus Leading Edge Flow Meter ultrasonic flow measurement instrumentation. Additionally, the proposed changes include a modification to the standby liquid control system that allows operators to select two pumps instead of three for the automatic start function on an anticipated transient without scram signal. By letter dated April 26, 2010, (ADAMS Accession Number ML101180250), the license amendment request was supplemented by Exelon in response to a request for clarification from the U.S. Nuclear Regulatory Commission (NRC) staff dated April 19, 2010 (ADAMS Accession Number ML101031079). The purpose of this letter is, to provide the results of the NRC staff's acceptance review of this amendment request; The NRC staff has reviewed your application, including the supplement dated April 26, 2010, and concluded that it does provide technical information in sufficient detail to enable the staff to proceed with its detailed technical review and make an independent assessment regarding the acceptability of the proposed amendment in terms of regulatory requirements and the protection of public health and safety and the environment. If additional information is needed for the staff to complete its technical review, you will be advised by separate correspondence.

- 2 Please contact me at 301-415-2833, if you have any questions.

Sincerely,

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Peter Bamford, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353 cc: Distribution via Listserv

- 2 Please contact me at 301-415-2833, if you have any questions.

Sincerely, IRAJ Peter Bamford, Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353 cc: Distribution via Listserv DISTRIBUTION:

PUBLIC RidsOgcRp Resource RidsAcrsAcnw_MailCTR Resource LPLI-2 RtF RidsNrrPMPBamford Resource RidsNrrDorlLpl1-2 Resource Nlqbal, NRR RidsRgn1 MailCenter Resource RidsNrrDorlDpr Resource JHuang, NRR RidsNrrLAABaxter Resource MDiaz, NRR CFairbanks, NRR LBenton, NRR PSahay, NRR TMossman, NRR AduBouchet, NRR MKeefe, NRR KBucholtz, NRR GCasto, NRR BHeida, NRR BParks, NRR DWoodyatt, NRR TAlexion, NRR ADAMS Accession Number' ML101240998 OFFICE LPLI-2/PM LPLI-2/LA LPLI-2/BC NAME PBamford ABaxter HChernoff REnnis for DATE 5/4/10 5/5/10 5/6/10 OFFICIAL RECORD COpy