ML031480652

Request for Additional Information, Request for Amendment to Technical Specifications (TS) Related to TS Table 3.3.5.1-1

ML031480652
Person / Time
Site:	LaSalle
Issue date:	05/30/2003
From:	Macon W NRC/NRR/DLPM/LPD3
To:	Skolds J Exelon Generation Co
Macon W, NRR/DLPM,415-3965
References
TAC MB8198, TAC MB8199
Download: ML031480652 (6)

Text

May 30, 2003 Mr. John L. Skolds, President Exelon Nuclear Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB8198 AND MB8199)

Dear Mr. Skolds:

By letter dated March 31, 2003, you submitted a request for amendment to Technical Specifications (TS) related to TS Table 3.3.5.1-1, "Emergency Core Cooling System Instrumentation." The U.S. Nuclear Regulatory Commission (NRC) staff has performed an initial review of your request and finds that it needs additional information to complete its review.

Therefore, it is requested that you respond to the enclosed request for additional information by June 27, 2003, for the NRC staff to expedite its review. The response date was agreed upon by members of your staff via telephone conference on May 27, 2003. The enclosed questions are unchanged from those sent by e-mail to a member of your staff on May 16, 2003.

Sincerely,

/RA/

William A. Macon, Jr., Project Manager, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374

Enclosure:

As stated cc w/encl: See next page

May 30, 2003 Mr. John L. Skolds, President Exelon Nuclear Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION (TAC NOS. MB8198 AND MB8199)

Dear Mr. Skolds:

By letter dated March 31, 2003, you submitted a request for amendment to Technical Specifications (TS) related to TS Table 3.3.5.1-1, "Emergency Core Cooling System Instrumentation." The U.S. Nuclear Regulatory Commission (NRC) staff has performed an initial review of your request and finds that it needs additional information to complete its review.

Therefore, it is requested that you respond to the enclosed request for additional information by June 27, 2003, for the NRC staff to expedite its review. The response date was agreed upon by members of your staff via telephone conference on May 27, 2003. The enclosed questions are unchanged from those sent by e-mail to a member of your staff on May 16, 2003.

Sincerely,

/RA/

William A. Macon, Jr., Project Manager, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374

Enclosure:

As stated cc w/encl: See next page DISTRIBUTION:

PUBLIC PD3-2 r/f AMendiola PCoates WMacon SBloom OGC ACRS DHills, RIII ADAMS Accession Number: ML031480652 OFFICE PM:LPD3-2 LA:LPD3-2 SC:LPD3-2 NAME WMacon PCoates AMendiola DATE 5/29/03 5/29/03 5/30/03 OFFICIAL RECORD COPY

LaSalle County Station Units 1 and 2 cc:

Site Vice President - LaSalle Regional Administrator Exelon Generation Company, LLC U.S. NRC, Region III 2601 North 21st Road 801 Warrenville Road Marseilles, IL 61341-9757 Lisle, IL 60532-4351 LaSalle County Station Plant Manager Illinois Department of Nuclear Safety Exelon Generation Company, LLC Office of Nuclear Facility Safety 2601 North 21st Road 1035 Outer Park Drive Marseilles, IL 61341-9757 Springfield, IL 62704 Regulatory Assurance Manager - LaSalle Document Control Desk-Licensing Exelon Generation Company, LLC Exelon Generation Company, LLC 2601 North 21st Road 4300 Winfield Road Marseilles, IL 61341-9757 Warrenville, IL 60555 U.S. Nuclear Regulatory Commission Senior Vice President - Nuclear Services LaSalle Resident Inspectors Office Exelon Generation Company, LLC 2605 North 21st Road 4300 Winfield Road Marseilles, IL 61341-9756 Warrenville, IL 60555 Phillip P. Steptoe, Esquire Vice President Sidley and Austin Mid-West Operations Support One First National Plaza Exelon Generation Company, LLC Chicago, IL 60603 4300 Winfield Road Warrenville, IL 60555 Assistant Attorney General 100 W. Randolph St. Suite 12 Senior Vice President Chicago, IL 60601 Mid-West Regional Operating Group Exelon Generation Company, LLC Chairman 4300 Winfield Road LaSalle County Board Warrenville, IL 60555 707 Etna Road Ottawa, IL 61350 Vice President - Licensing and Regulatory Affairs Attorney General Exelon Generation Company, LLC 500 S. Second Street 4300 Winfield Road Springfield, IL 62701 Warrenville, IL 60555 Chairman Illinois Commerce Commission 527 E. Capitol Avenue, Leland Building Springfield, IL 62706 Robert Cushing, Chief, Public Utilities Division Illinois Attorney Generals Office 100 W. Randolph Street Chicago, IL 60601

LaSalle County Station Units 1 and 2 Director - Licensing Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Counsel, Nuclear Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Manager - Licensing -Clinton and LaSalle Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555

REQUEST FOR ADDITIONAL INFORMATION LASALLE COUNTY STATION, UNITS 1 AND 2

Reference:

Letter from K. R. Jury (Exelon Nuclear) to NRC, Request for Amendment to Technical Specifications Table 3.3.5.1-1, "Emergency Core Cooling System Instrumentation," dated March 31, 2003

1. On Page 4 of the submittal there is a reference to loss of coolant accident (LOCA) analyses.

The staff requests the licensee to identify the evaluation models used for the LOCA analyses.

In the analyses, the maximum assumed injection flow is 5400 gallons per minute (gpm). In Technical Specifications Surveillance Requirement 3.5.1.5, the tested flow rates are 6250 gpm for Unit 1 and 6200 gpm for Unit 2. The staff requests the licensee to describe in detail how the analyses value of 5400 gpm is verified during the periodic test with the increased minimum flow value of 2194 gpm.

2. The staff requests the licensee to provide the setpoint methodology calculations used in determining the revised upper Allowable Value limit ( 2194 gpm). Please include all the historical calibration and performance data used in these calculations. It is recommended that any Standards and Guides that are used in the calculations be referenced.

ENCLOSURE