ML071700766
| ML071700766 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Peach Bottom, Oyster Creek, Byron, Braidwood, Limerick, Clinton, Quad Cities, LaSalle, Crane |
| Issue date: | 07/12/2007 |
| From: | Gratton C NRC/NRR/ADRO/DORL/LPLIII-2 |
| To: | Crane C Exelon Generation Co |
| Gratton C, NRR/DORL 415-1055 | |
| References | |
| GL-06-003, TAC MD1550, TAC MD1551, TAC MD1564, TAC MD1621, TAC MD1622 | |
| Download: ML071700766 (6) | |
Text
July 12, 2007 Mr. Christopher M. Crane President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
CLOSURE OF THE REVIEW OF EXELON GENERATION COMPANYS AND AMERGEN ENERGY COMPANYS RESPONSE TO GENERIC LETTER 2006-03, POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS, FOR BRAIDWOOD STATION, UNITS 1 AND 2, CLINTON POWER STATION, UNIT NO. 1, AND QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 (TAC NOS. MD1550, MD1551, MD1564, MD1621, AND MD1622)
Dear Mr. Crane:
The Nuclear Regulatory Commission (NRC) acknowledges the receipt of Exelon Generation Companys and AmerGen Energy Company, LLC (Exelon/AmerGen), response to Generic Letter (GL) 2006-03, Potentially Nonconforming Hemyc and MT Fire Barrier Configurations, for Braidwood Station (Braidwood), Units 1 and 2, Clinton Power Station (Clinton), Unit No. 1, and Quad Cities Nuclear Power Station (Quad Cities), Units 1 and 2, by letter dated June 6, 2006, as supplemented by letter dated May 31, 2007. Under oath or affirmation, Mr. Thomas S. ONeill and Mr. Darin Benyak stated in letters dated June, 6, 2006, and May 31, 2007, respectively, that the subject Exelon/AmerGen nuclear power plants do not rely on either the Hemyc or MT fire barrier system.
Exelon/AmerGen also submitted documentation under oath or affirmation that other 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> fire barriers that separate redundant safe shutdown trains located within the same fire area at Clinton, Unit No. 1, and Quad Cities, Units 1 and 2, have been designed and installed in accordance with current NRC guidance. For Braidwood, Units 1 and 2, Exelon/AmerGen affirmed that the as-built 3M Interam electrical raceway fire barrier system (ERFBS) configuration will provide at least 49 minutes of protection when tested in accordance with ASTM E-119 fire exposure and evaluated per acceptance criteria prescribed in Generic Letter 86-10, Supplement 1. This level of protection was deemed acceptable by Exelon/AmerGen for the fire risk prevalent in the area of application. However, since the subject program change at Braidwood, Units 1 and 2, is not a previously reviewed or approved change by NRC staff, the bases supporting the adequacy of this configuration should be maintained on site and may be subject to inspection during the normal NRC inspection process. The bases for stating that the other 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> fire barriers have been designed and installed in accordance with NRC guidance should also be maintained on site and may be subject to inspection during the normal NRC inspection process. Accordingly, the NRC staff's review of the Exelon/AmerGen response is complete, and the staff will close TAC Nos. MD1550, MD1551, MD1564, MD1621, and MD1622.
Your letter dated June 6, 2006, also included GL 2006-03 responses for Byron Station, Unit Nos. 1 and 2 (Byron); Dresden Nuclear Power Station, Units 2 and 3 (Dresden); LaSalle County
C. Crane Station, Units 1 and 2 (LaSalle); Limerick Generating Station, Units 1 and 2 (Limerick); Oyster Creek Generating Station (Oyster Creek); Peach Bottom Atomic Power Station, Units 2 and 3 (Peach Bottom); and Three Mile Island, Unit 1 (TMI). For Dresden, LaSalle, and TMI, the NRC staff closeout letters can be found in the Agencywide Documents Access and Management System (ADAMS) at Accession Nos. ML063000065, ML062300114, and ML061810093, respectively. For Byron, Limerick, Oyster Creek, and Peach Bottom, the NRC staff closeout letter can be found in the ADAMS Accession No. ML071000347.
If you have any questions regarding this response, please contact me at (301) 415-1055.
Sincerely,
/RA/
Christopher Gratton, Sr. Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-456, 50-457, 50-461, 50-254, and 50-265 cc: See next page
If you have any questions regarding this response, please contact me at (301) 415-1055.
Sincerely,
/RA/
Christopher Gratton, Sr. Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-456, 50-457, 50-461, 50-254, and 50-265 cc: See next page DISTRIBUTION:
PUBLIC RidsRgn3MailCenter RidsRgn1MailCenter RidsNrrDorl LPL1-2R/F RidsNrrDorlLpl1-2 RidsNrrPMCGratton RidsNrrDraAfpb RidsNrrDorlLpl3-2 RidsNrrLAEWhitt RidsNrrPMSSands TDinh, NRR LPL3-2 R/F RidsNrrPMMThorpe-Kavanagh DFrumkin, NRR RidsAcrsAcnwMailCenter ADAMS ACCESSION NUMBER: ML071700766 NRR-106 OFFICE LPL3-2/PM LPL3-2/LA AFPB/BC LPL3-2/BC NAME CGratton EWhitt (THarris for)
SWeerakkody RGibbs DATE 7/10/07 7/10/07 7/6/2007 7/12/07
Braidwood Station Units 1 and 2 cc:
Regional Administrator, Region III U.S. Nuclear Regulatory Commission 2443 Warrenville Road, Suite 210 Lisle, IL 60532-4352 Document Control Desk - Licensing via e-mail Mr. Dwain W. Alexander, Project Manager Westinghouse Electric Corporation via e-mail Ms. Bridget Little Rorem Appleseed Coordinator via e-mail Howard A. Learner Environmental Law and Policy Center of the Midwest 35 East Wacker Dr., Suite 1300 Chicago, IL 60601-2110 U.S. Nuclear Regulatory Commission Braidwood Resident Inspectors Office 35100 S. Rt. 53, Suite 79 Braceville, IL 60407 Ms. Lorraine Creek RR 1, Box 182 Manteno, IL 60950 Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 1035 Outer Park Dr Springfield, IL 62704 County Executive via e-mail Attorney General 500 S. Second Street Springfield, IL 62701 Plant Manager - Braidwood Station via e-mail Site Vice President - Braidwood via e-mail Senior Vice President - Operations Support via e-mail Chairman, Ogle County Board Post Office Box 357 Oregon, IL 61061 Manager Regulatory Assurance -
Braidwood via e-mail Director - Licensing and Regulatory Affairsvia e-mail Associate General Counsel via e-mail Senior Vice President - Midwest Operationsvia e-mail Vice President - Regulatory Affairs via e-mail Manager Licensing - Braidwood, Byron and LaSalle via e-mail
Clinton Power Station, Unit No. 1 cc:
Senior Vice President - Operations Support via e-mail Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 1035 Outer Park Dr Springfield, IL 62704 Director - Licensing and Regulatory Affairs via e-mail Manager Licensing - Dresden, Quad Cities and Clinton via e-mail Manager Regulatory Assurance - Clinton via e-mail Vice President - Regulatory Affairs via e-mail Document Control Desk - Licensing via e-mail Site Vice President - Clinton Power Station via e-mail Plant Manager - Clinton Power Station via e-mail Senior Vice President - Midwest Operations via e-mail Resident Inspector U.S. Nuclear Regulatory Commission RR 3, Box 229A Clinton, IL 61727 Regional Administrator, Region III U.S. Nuclear Regulatory Commission 2443 Warrenville Road, Suite 210 Lisle, IL 60532-4352 Associate General Counsel via e-mail Chairman of DeWitt County c/o County Clerks Office DeWitt County Courthouse Clinton, IL 61727 J. W. Blattner Project Manager Sargent & Lundy Engineers 55 East Monroe Street Chicago, IL 60603
Quad Cities Nuclear Power Station, Units 1 and 2 cc:
Site Vice President - Quad Cities via e-mail Plant Manager - Quad Cities Nuclear Power Station via e-mail Manager Regulatory Assurance - Quad Cities via e-mail Quad Cities Resident Inspectors Office U.S. Nuclear Regulatory Commission 22712 206th Avenue N.
Cordova, IL 61242 David C. Tubbs MidAmerican Energy Company via e-mail Vice President - Law and Regulatory Affairs MidAmerican Energy Company One River Center Place 106 E. Second Street P.O. Box 4350 Davenport, IA 52808 Chairman Rock Island County Board of Supervisors via e-mail Regional Administrator, Region III U.S. Nuclear Regulatory Commission 2443 Warrenville Road, Suite 210 Lisle, IL 60532-4352 Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 1035 Outer Park Dr Springfield, IL 62704 Document Control Desk - Licensing via e-mail Senior Vice President - Operations Support via e-mail Director - Licensing and Regulatory Affairs via e-mail Vice President - Regulatory Affairs via e-mail Associate General Counsel via e-mail Manager Licensing - Dresden, Quad Cities and Clinton via e-mail Senior Vice President - Midwest Operations via e-mail