ML071140323
| ML071140323 | |
| Person / Time | |
|---|---|
| Site: | Braidwood, Clinton, Quad Cities  |
| Issue date: | 05/02/2007 |
| 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: ML071140323 (7) | |
Text
May 2, 2007 Mr. Christopher M. Crane President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
BRAIDWOOD STATION, UNITS 1 AND 2; CLINTON POWER STATION, UNIT NO. 1; AND QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO GENERIC LETTER 2006-03, POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS (TAC NOS. MD1550, MD1551, MD1564, MD1621, AND MD1622)
Dear Mr. Crane:
The Nuclear Regulatory Commission (NRC) staff reviewed Exelon Generation Company, LLCs, and AmerGen Energy Company, LLCs (the licensees), response dated June 6, 2006, to Generic Letter (GL) 2006-03, Potentially Nonconforming Hemyc and MT Fire barrier Configurations, dated April 10, 2006, and has determined that additional information is required to complete the review.
The NRC staff faxed a draft copy of the information request to Mr. Darin Benyak on April 20, 2007. On April 23, 2007, the NRC staff clarified, with Mr. David Gullott, that the licensees understood the intent of the questions and it was agreed that a follow-up call would not be necessary at this time. The specific information requested is addressed in the enclosure to this letter. The NRC staff requests that you respond to the enclosed request for information by May 31, 2007.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1055.
Sincerely,
/RA/
Christopher Gratton, Senior Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. STN 50-456, STN 50-457, 50-461, 50-254, and 50-265
Enclosure:
Request for Additional Information cc w/encl: See next page
Mr. Christopher M. Crane May 2, 2007 President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
BRAIDWOOD STATION, UNITS 1 AND 2; CLINTON POWER STATION, UNIT NO. 1 ; AND QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO GENERIC LETTER 2006-03, POTENTIALLY NONCONFORMING HEMYC AND MT FIRE BARRIER CONFIGURATIONS (TAC NOS. MD1550, MD1551, MD1564, MD1621, AND MD1622)
Dear Mr. Crane:
The Nuclear Regulatory Commission (NRC) staff reviewed Exelon Generation Company, LLCs, and AmerGen Energy Company, LLCs (the licensees), response dated June 6, 2006, to Generic Letter (GL) 2006-03, Potentially Nonconforming Hemyc and MT Fire barrier Configurations, dated April 10, 2006, and has determined that additional information is required to complete the review.
The NRC staff faxed a draft copy of the information request to Mr. Darin Benyak on April 20, 2007. On April 23, 2007, the NRC staff clarified, with Mr. David Gullott, that the licensees understood the intent of the questions and it was agreed that a follow-up call would not be necessary at this time. The specific information requested is addressed in the enclosure to this letter. The NRC staff requests that you respond to the enclosed request for information by May 31, 2007.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1055.
Sincerely,
/RA/
Christopher Gratton, Senior Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. STN 50-456, STN 50-457, 50-461, 50-254, and 50-265
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
TDinh, NRR TBloomer, EDO Region III PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMCGratton RidsNrrLAEWhitt RidsAcrsAcnwMailCenter RidsOgcRp RidsDraAfpb RidsRgn3MailCenter ADAMS ACCESSION #: ML071140323 NRR-088 OFFICE LPL3-2/PM LPL3-2/LA DRA/AFPB/BC LPL3-2/BC NAME CGratton EWhitt SWeerakkody RGibbs DATE 5/1/07 5/1/07 4/27/07 5/2/07 OFFICIAL RECORD COPY
Enclosure REQUEST FOR ADDITIONAL INFORMATION BRAIDWOOD STATION, UNITS 1 AND 2; CLINTON POWER STATION, UNIT NO. 1 QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2 DOCKET NOS. STN 50-456, STN 50-457, 50-461, 50-254, AND 50-265 The Nuclear Regulatory Commission (NRC) staff reviewed Exelon Generation Company, LLCs and AmerGen Energy Company, LLCs (the licensees), response dated June 6, 2006, to Generic Letter (GL) 2006-03, Potentially Nonconforming Hemyc and MT Fire barrier Configurations, dated April 10, 2006, and determined that additional information was needed to complete its review.
The current NRC guidance for raceway protection is contained in GL 86-10, Implementation of Fire Barrier Requirements, Supplement 1. Please provide the following clarification to your June 6, 2006, GL 2003-01 response.
Were the as-installed 3M electrical raceway fire barrier system (ERFBS) for Braidwood Station, Units 1 and 2, and Clinton Power Station, Unit No. 1, and the Versa Wrap and Darmatt ERFBS for Quad Cities Nuclear Power Station, Units 1 and 2 tested and evaluated (for deviations from the testing) in accordance with the GL 86-10, Supplement 1 guidance?
If not, please provide the following supplemental information regarding the fire barrier systems:
- 1) Are the installed barriers representative of the tested configurations? If not, how were deviations evaluated?
- 2) Do the performance test configurations encompass or bound the installed configurations? If not, how was bounding evaluated?
- 3) Does the plant cable loading (i.e., the thermal mass of the installed configurations) bound the tested configurations? If not, how were raceways having less thermal mass evaluated?
- 4) Was the ASTM E-119 time-temperature curve used during testing of these barriers? If not, what temperatures were used?
- 5) What measure was used to determine that the protected cables would be free of fire damage (e.g., temperature measurement, hose stream, operations during fire conditions, meggering, etc)?
Braidwood Station Units 1 and 2 cc:
Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Document Control Desk - Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Mr. Dwain W. Alexander, Project Manager Westinghouse Electric Corporation Energy Systems Business Unit Post Office Box 355 Pittsburgh, PA 15230 Ms. Bridget Little Rorem Appleseed Coordinator 117 N. Linden Street Essex, IL 60935 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 110 East Adams Street Springfield, IL 62701-1109 County Executive Will County Office Building 302 N. Chicago Street Joliet, IL 60432 Attorney General 500 S. Second Street Springfield, IL 62701 Plant Manager - Braidwood Station Exelon Generation Company, LLC 35100 S. Rt. 53, Suite 84 Braceville, IL 60407-9619 Site Vice President - Braidwood Exelon Generation Company, LLC 35100 S. Rt. 53, Suite 84 Braceville, IL 60407-9619 Senior Vice President - Operations Support Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Chairman, Ogle County Board Post Office Box 357 Oregon, IL 61061 Manager Regulatory Assurance - Braidwood Exelon Generation Company, LLC 35100 S. Rt. 53, Suite 84 Braceville, IL 60407-9619 Director - Licensing and 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 Senior Vice President - Midwest Operations Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President - Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
Braidwood Station Units 1 and 2 cc:
Manager Licensing - Braidwood, Byron and LaSalle Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Clinton Power Station, Unit No. 1 cc:
Senior Vice President - Operations Support Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 110 East Adams Street Springfield, IL 62701-1109 Director - Licensing and Regulatory Affairs AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555 Manager Licensing - Dresden, Quad Cities and Clinton Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Manager Regulatory Assurance - Clinton AmerGen Energy Company, LLC Clinton Power Station RR 3, Box 228 Clinton, IL 61727-9351 Vice President - Regulatory Affairs AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555 Document Control Desk - Licensing AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555 Site Vice President - Clinton Power Station AmerGen Energy Company, LLC Clinton Power Station RR 3, Box 228 Clinton, IL 61727-9351 Plant Manager - Clinton Power Station AmerGen Energy Company, LLC Clinton Power Station RR 3, Box 228 Clinton, IL 61727-9351 Senior Vice President - Midwest Operations Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Resident Inspector U.S. Nuclear Regulatory Commission RR 3, Box 229A Clinton, IL 61727 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Associate General Counsel Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 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 Exelon Generation Company, LLC 22710 206th Avenue N.
Cordova, IL 61242-9740 Plant Manager - Quad Cities Nuclear Power Station Exelon Generation Company, LLC 22710 206th Avenue N.
Cordova, IL 61242-9740 Manager Regulatory Assurance - Quad Cities Exelon Generation Company, LLC 22710 206th Avenue N.
Cordova, IL 61242-9740 Quad Cities Resident Inspectors Office U.S. Nuclear Regulatory Commission 22712 206th Avenue N.
Cordova, IL 61242 David C. Tubbs MidAmerican Energy Company One River Center Place 106 E. Second, P.O. Box 4350 Davenport, IA 52808-4350 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 1504 3rd Avenue Rock Island County Office Bldg.
Rock Island, IL 61201 Regional Administrator, Region III U.S. Nuclear Regulayory Commission Suite 210 4300 Winfield Road Warrenville, IL 60555 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 Manager Licensing - Dresden, Quad Cities and Clinton 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