ML031480652
| 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 Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 LaSalle County Station Plant Manager Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 Regulatory Assurance Manager - LaSalle Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 U.S. Nuclear Regulatory Commission LaSalle Resident Inspectors Office 2605 North 21st Road Marseilles, IL 61341-9756 Phillip P. Steptoe, Esquire Sidley and Austin One First National Plaza Chicago, IL 60603 Assistant Attorney General 100 W. Randolph St. Suite 12 Chicago, IL 60601 Chairman LaSalle County Board 707 Etna Road Ottawa, IL 61350 Attorney General 500 S. Second Street Springfield, IL 62701 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 Regional Administrator U.S. NRC, Region III 801 Warrenville Road Lisle, IL 60532-4351 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, IL 62704 Document Control Desk-Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President - Nuclear Services Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President Mid-West Operations Support Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President Mid-West Regional Operating Group Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
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
ENCLOSURE 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.