ML070790206
| ML070790206 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 03/22/2007 |
| From: | Sands S NRC/NRR/ADRO/DORL/LPLIII-2 |
| To: | Crane C Exelon Generation Co |
| Sands S,NRR/DORL, 415-3154 | |
| Shared Package | |
| ML070790219 | List: |
| References | |
| Download: ML070790206 (4) | |
Text
March 22, 2007 Mr. Christopher M. Crane President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
LASALLE COUNTY STATION (LASALLE), UNITS 1 AND 2 - MEASUREMENT UNCERTAINTY REVIEW AND ALTERNATIVE CALCULATION RELATED TO LASALLE ULTIMATE HEAT SINK AMENDMENT DENIAL On November 3, 2006, the Nuclear Regulatory Commission (NRC) issued a denial of Exelon Generation Companys, LLC (EGCs) ultimate heat sink license amendment request, Request for a License Amendment to Technical Specification [TS] 3.7.3, Ultimate Heat Sink, dated March 13, 2006. On January 24, 2007, EGC responded to the denial with a letter requesting a public meeting, which was held at NRC headquarters in Rockville, MD, on January 26, 2007.
During that meeting the basis for the NRC staffs denial was discussed, including an uncertainty calculation prepared by the NRC staff.
In addition to the uncertainty calculation contained herein, the NRC staff is preparing a response to the areas of concern EGC had raised, both in January 24, 2007, letter and in the meeting on January 26, 2007. Specifically, EGC is concerned that the NRC is challenging the current design and TS licensing basis of the LaSalle circulating water system. Additionally, EGC questioned if the NRC staff changed its position on the required measurement uncertainty methodology for non-safety related indicating loops.
The NRC staff will provide an additional response with respect to the areas of concern articulated by EGC in the letter dated January 24, 2006, Response to LaSalle County Station, Units 1 and 2 - Denial of License Amendment, prior to the April 5, 2007, followup meeting.
Sincerely,
/RA/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosure:
As stated cc w/encl: See next page
Mr. Christopher M. Crane President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
LASALLE COUNTY STATION (LASALLE), UNITS 1 AND 2 - MEASUREMENT UNCERTAINTY REVIEW AND ALTERNATIVE CALCULATION RELATED TO LASALLE ULTIMATE HEAT SINK AMENDMENT DENIAL On November 3, 2006, the Nuclear Regulatory Commission (NRC) issued a denial of Exelon Generation Companys, LLC (EGCs) ultimate heat sink license amendment request, Request for a License Amendment to Technical Specification [TS] 3.7.3, Ultimate Heat Sink, dated March 13, 2006. On January 24, 2007, EGC responded to the denial with a letter requesting a public meeting, which was held at NRC headquarters in Rockville, MD, on January 26, 2007.
During that meeting the basis for the NRC staffs denial was discussed, including an uncertainty calculation prepared by the NRC staff.
In addition to the uncertainty calculation contained herein, the NRC staff is preparing a response to the areas of concern EGC had raised, both in January 24, 2007, letter and in the meeting on January 26, 2007. Specifically, EGC is concerned that the NRC is challenging the current design and TS licensing basis of the LaSalle circulating water system. Additionally, EGC questioned if the NRC staff changed its position on the required measurement uncertainty methodology for non-safety related indicating loops.
The NRC staff will provide an additional response with respect to the areas of concern articulated by EGC in the letter dated January 24, 2006, Response to LaSalle County Station, Units 1 and 2 - Denial of License Amendment, prior to the April 5, 2007, followup meeting.
Sincerely,
/RA/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosure:
As stated cc w/encl: See next page Distribution:
PUBLIC LPL3-2 R/F RidsNrrLAEWhitt RidsOgcRp RidsNrrDorlDpr RidsNrrPMSSands RidsAcrsAcnwMailCenter RidsRgn3MailCenter RidsNrrDorlLpl3-2 Package Accession Number: ML070790219 Accession Number: ML070790206 (Letter)
Enclosure Accession Number: ML070790394 NRR-106 OFFICE LPL3-2/PM LPL3-2/LA EICB/BC LPL3-2/BC NAME SSands:mw EWhitt AHowe RGibbs (CGratton for)
DATE 3/22/2007 3/22/2007 3/22/2007 3/22/2007 OFFICIAL RECORD COPY
LaSalle County Station, Units 1 and 2 cc:
Site Vice President - LaSalle County Station Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 Plant Manager - LaSalle County Station Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 Manager Regulatory Assurance - 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 General's Office 100 W. Randolph Street Chicago, IL 60601 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4352 Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 110 East Adams Street Springfield, IL 62701-1109 Document Control Desk - Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President - Operations Support Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Director - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President - Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Associate General Counsel Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
LaSalle County Station, Units 1 and 2 cc:
Manager Licensing - Braidwood, Byron, and LaSalle Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President - Midwest Operations Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555