ML100260551

Summary of Pre-Application Meeting with Exelon to Discuss Proposed High Pressure Coolant Injection Isolation Setpoint Change License Amendment Request

ML100260551
Person / Time
Site:	Limerick
Issue date:	02/03/2010
From:	Peter Bamford Plant Licensing Branch 1
To:
Bamford, Peter J., NRR/DORL 415-2833
Shared Package
ml100201009	List: ML100201032 ML100260551
References
TAC ME2877, TAC ME2878
Download: ML100260551 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 3, 2010 LICENSEE: Exelon Generation Company, LLC (Exelon)

FACILITY: Limerick Generating Station, Unit Nos. 1 and 2

SUMMARY

OF JANUARY 21,2010, PRE-APPLICATION MEETING WITH EXELON TO DISCUSS PROPOSED HIGH PRESSURE COOLANT INJECTION ISOLATION SETPOINT CHANGE LICENSE AMENDMENT REQUEST (TAC NOS. ME2877 AND ME2878)

On January 21,2010, a Category 1 public meeting was held, by teleconference, between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC (Exelon, the licensee). The purpose of the meeting was to discuss a proposed license amendment request (LAR) regarding changes to the high pressure coolant injection (HPCI) isolation setpoint on differential temperature at Limerick Generating Station (LGS), Unit Nos. 1 and 2.

The licensee provided an overview of the planned LAR. One of the technical specification (TS) required setpoints associated with the HPClieak detection system involves an isolation on room differential temperature. During a licensee-initiated review of the setpoint analysis, Exelon determined that the existing TS trip setpoint and allowable values for both units were non conservative. After discovery of this discrepancy, the licensee initiated prompt corrective actions to the plants' configuration by adjusting the setpoints to a value that removes the non conservatism. The purpose of this LAR would be to correct the TS values for HPCI isolation consistent with the revised analysis and adjusted plant configuration. The NRC staff provided feedback to Exelon in the following areas: (1) the level of detail desired regarding the derivation of the HPCI isolation analytical limit and the loop uncertainty calculation; (2) the application of the Limiting Safety System Setpoint terminology; (3) the applicability of Regulatory Issue Summary 2006-17, "NRC Staff Position on the Requirements of 10 CFR 50.36, 'Technical Specifications,' Regarding Limiting Safety System Settings During Periodic Testing and Calibration of Instrument Channels;" and (4) the overall setpoint methodology being employed.

No regulatory decisions were made at the meeting.

No proprietary information was discussed at the meeting. One member of the public was in attendance from the Bureau of Radiation Protection, Nuclear Safety Division, Pennsylvania Department of Environmental Protection. No comments were presented to the NRC staff during the public portion of the meeting. A list of attendees is provided in the Enclosure. Handout material from the meeting may be found at Agencywide Documents Access and Management System (ADAMS) Accession No. ML100201032.

-2 Please direct any inquiries to me at 301-415-2833 or peter. bamford@nrc.gov.

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Peter Bamford Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-352 and 50-353

Enclosure:

List of Attendees cc w/encl: Distribution via ListServ

LIST OF ATrENDEES JANUARY 21.2010. MEETING WITH EXELON GENERATION COMPANY, LLC LIMERICK GENERATING STATION, UNIT NOS. 1 AND 2 LICENSE AMENDMENT REQUEST EXELON Ken Collier Ed Hosterman Dave Helker Frank Mascitelli Roy Harding Ken Slough Garrett Hooper Peter Bamford Hukam Garg Carl Schulten Kristy Bucholtz PUBLIC Michael Murphy, Pennsylvania Bureau of Radiation Protection Enclosure

Package ML100201009; Meeting Notice ML100050085; Meeting Handouts ML100201032;

. S ummarv ML100260551 M eetinq OFFICE DORULPLI-2/PM DORULPLI-2/LA DORULPLI-2/BC NAME PBamford ABaxter HChernoff DATE 1/26/10 2/1110 2/3/10