ML072920307

RAI

ML072920307
Person / Time
Site:	Dresden, Peach Bottom, Oyster Creek, Byron, Braidwood, Limerick, Clinton, Quad Cities, LaSalle, Crane
Issue date:	11/06/2007
From:	Geoffrey Miller NRC/NRR/ADRO/DORL/LPLI-2
To:	Pardee C AmerGen Energy Co, Exelon Generation Co
Miller G, NRR/DORL, 415-2481
References
GL-07-001, TAC MD4298, TAC MD4299, TAC MD4305, TAC MD4306, TAC MD4312, TAC MD4323, TAC MD4324, TAC MD4340, TAC MD4341, TAC MD4342, TAC MD4343, TAC MD4356, TAC MD4361, TAC MD4362, TAC MD4369, TAC MD4370, TAC MD4389
Download: ML072920307 (12)

Text

November 6, 2007 Mr. Charles G. Pardee Chief Nuclear Officer and Senior Vice President Exelon Generation Company, LLC Chief Nuclear Officer AmerGen Energy Company, LLC 4300 Winfield Road Warrenville, IL 60555

SUBJECT:

BRAIDWOOD STATION, UNITS 1 AND 2; BYRON STATION, UNIT NOS. 1 AND 2; CLINTON POWER STATION, UNIT NO. 1; DRESDEN NUCLEAR POWER STATION, UNITS 1, 2, AND 3; LASALLE COUNTY STATION, UNITS 1 AND 2; LIMERICK GENERATING STATION, UNITS 1 AND 2; OYSTER CREEK NUCLEAR GENERATING STATION; PEACH BOTTOM ATOMIC POWER STATION, UNITS 1, 2, AND 3; QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2; AND THREE MILE ISLAND NUCLEAR STATION, UNIT 1 -

REQUEST FOR ADDITIONAL INFORMATION RE: RESPONSE TO GENERIC LETTER 2007-01, INACCESSABLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MANAGEMENT SYSTEMS OR CAUSE PLANT TRANSIENTS (TAC NOS. MD4298, MD4299, MD4305, MD4306, MD4312, MD4323, MD4324, MD4340, MD4341, MD4342, MD4343, MD4356, MD4361, MD4362, MD4369, MD4370, AND MD4389)

Dear Mr. Pardee:

On February 8, 2007, the Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 2007-01, Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plant Transients, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML070360665). By letter dated April 13, 2007 (ADAMS Accession No. ML070940311), the NRC provided a response, including some clarification, to a Nuclear Energy Institute (NEI) letter dated March 26, 2007 (ADAMS Accession No. ML070950462). The NEI letter provided an interpretation of the information requested by GL 2007-01. By letter dated May 7, 2007, (ADAMS Accession No. ML071280098) Exelon Generation Company, LLC, and AmerGen Energy Company, LLC, provided a response to the GL.

The NRC staff has been reviewing your response to GL 2007-01 and has determined that additional information is required. The specific information requested is addressed in the enclosure to this letter.

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 NRC=s goal of

C. Pardee efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-2481.

Sincerely,

/RA/

G. Edward Miller, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. STN 50-456 and STN 50-457; STN 50-454 and STN 50-455; 50-461; 50-10, 50-237, and 50-249; 50-373 and 50-374; 50-352 and 50-353; 50-219; 50-171, 50-277, and 50-278; 50-254 and 50-265; and 50-289

Enclosure:

Request for Additional Information cc w/encl: See next page

C. Pardee efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-2481.

Sincerely,

/RA/

G. Edward Miller, Project Manager Plant Licensing Branch I-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. STN 50-456 and STN 50-457; STN 50-454 and STN 50-455; 50-461; 50-10, 50-237, and 50-249; 50-373 and 50-374; 50-352 and 50-353; 50-219; 50-171, 50-277, and 50-278; 50-254 and 50-265; and 50-289

Enclosure:

Request for Additional Information cc w/encl: See next page DISTRIBUTION:

PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrLAEWhitt RidsAcrsAcnwMailCenter RidsNrrPMCGratton RidsOgcRp RidsRgn3MailCenter RidsNrrDorlDpr RidsNrrPMMKavanaugh RidsNrrPMSSands RidsNrrPMJHughey RidsNrrPMFSaba RidsNrrPMGMiller RidsNrrPMPBamford LPLI-2 R/F RidsNrrDorlLpl3-2 RidsNrrRgnIMailCenter RidsNrrLAABaxter RidsNrrPMJWiebe ADAMS Accession Number: ML072920307 *Via Memorandum OFFICE LPLI-2/PM LPL3-2/PM LPLI-2/LA EEEB/BC LPLI-2/BC NAME GEMiller CGratton ABaxter GWilson*

HChernoff DATE 10/25/07 10/31/07 10/30/07 9/11/07 11/6/07 OFFICIAL RECORD COPY

Byron/Braidwood Stations cc:

Dwain W. Alexander, Project Manager via e-mail Howard A. Learner Environmental Law and Policy Center of the Midwest 35 East Wacker Dr., Suite 1300 Chicago, IL 60601-2110 Byron Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail Ms. Lorraine Creek RR 1, Box 182 Manteno, IL 60950 Chairman, Ogle County Board Post Office Box 357 Oregon, IL 61061 Mrs. Phillip B. Johnson 1907 Stratford Lane Rockford, IL 61107 Attorney General 500 S. Second Street Springfield, IL 62701 Illinois Emergency Management Agency Division of Disaster Assistance &

Preparedness via e-mail Plant Manager - Byron Station via e-mail Site Vice President - Byron via e-mail Braidwood Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail County Executive via e-mail Plant Manager - Braidwood Station via e-mail Ms. Bridget Little Rorem Appleseed Coordinator via e-mail Document Control Desk - Licensing via e-mail Site Vice President - Braidwood via e-mail Senior Vice President - Operations Support via e-mail Mr. Barry Quigley 3512 Louisiana Rockford, IL 61108

Clinton Power Station, Unit 1 cc:

Director - Licensing and Regulatory Affairs via e-mail Manager Regulatory Assurance - Braidwood via e-mail Manager Regulatory Assurance - Byron via e-mail Associate General Counsel via e-mail Vice President - Regulatory Affairs via e-mail Manager Licensing via e-mail Senior Vice President - Midwest Operations via e-mail Manager Regulatory Assurance - Clinton via e-mail Site Vice President - Clinton Power Station via e-mail Plant Manager - Clinton Power Station via e-mail Clinton Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail Chairman of DeWitt County c/o County Clerk=s Office DeWitt County Courthouse Clinton, IL 61727 J. W. Blattner Project Manager Sargent & Lundy Engineers 55 East Monroe Street Chicago, IL 60603

Dresden and Quad Cities Nuclear Power Stations, Units 1 and 2 cc:

Site Vice President - Dresden Nuclear Power Station via e-mail Plant Manager - Dresden Nuclear Power Station via e-mail Manager Regulatory Assurance - Dresden via e-mail Dresden Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail Chairman Grundy County Board via e-mail Site Vice President - Quad Cities via e-mail Plant Manager - Quad Cities via e-mail Manager Regulatory Assurance - Quad Cities via e-mail Quad Cities Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail 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 1504 3rd Avenue Rock Island County Office Bldg.

Rock Island, IL 61201 LaSalle County Station, Units 1 and 2 cc:

Site Vice President - LaSalle County Station via e-mail Plant Manager - LaSalle County Station via e-mail Manager Regulatory Assurance - LaSalle via e-mail LaSalle Senior Resident Inspector U.S. Nuclear Regulatory Commission via e-mail 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 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

Limerick Generating Station, Unit Nos. 1 and 2 cc:

Site Vice President Limerick Generating Station Exelon Generation Company, LLC P.O. Box 2300 Sanatoga, PA 19464 Plant Manager Limerick Generating Station Exelon Generation Company, LLC P.O. Box 2300 Sanatoga, PA 19464 Regulatory Assurance Manager - Limerick Exelon Generation Company, LLC P.O. Box 2300 Sanatoga, PA 19464 Vice President - Operations, Mid-Atlantic Exelon Generation Company, LLC 200 Exelon Way, KSA 3-N Kennett Square, PA 19348 Chairman Board of Supervisors of Limerick Township 646 West Ridge Pike Linfield, PA 19468 Vice President Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Director Licensing and Regulatory Affairs Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Manager Licensing Exelon Generation Company, LLC 200 Exelon Way, KSA 3-E Kennett Square, PA 19348 Correspondence Control Desk Exelon Generation Company, LLC P.O. Box 160 Kennett Square, PA 19348 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Senior Resident Inspector U.S. Nuclear Regulatory Commission Limerick Generating Station P.O. Box 596 Pottstown, PA 19464 Library U.S. Nuclear Regulatory Commission Region I 475 Allendale Road King of Prussia, PA 19406 Director, Bureau of Radiation Protection Pennsylvania Dept. of Environmental Protection Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469 Chairman Board of Supervisors of Limerick Township 646 West Ridge Pike Linfield, PA 19468 Dr. Judith Johnsrud National Energy Committee Sierra Club 433 Orlando Avenue State College, PA 16803 J. Bradley Fewell, Esquire Associate General Counsel Exelon Generating Company, LLC 4300 Winfield Road Warrenville, IL 60555

Peach Bottom Atomic Power Station, Unit Nos. 2 and 3 cc:

Site Vice President Peach Bottom Atomic Power Station Exelon Generation Company, LLC 1848 Lay Road Delta, PA 17314 Plant Manager Peach Bottom Atomic Power Station Exelon Generation Company, LLC 1848 Lay Road Delta, PA 17314 Regulatory Assurance Manager Peach Bottom Atomic Power Station Exelon Generation Company, LLC 1848 Lay Road Delta, PA 17314 Resident Inspector U.S. Nuclear Regulatory Commission Peach Bottom Atomic Power Station P.O. Box 399 Delta, PA 17314 Mr. Roland Fletcher Department of Environment Radiological Health Program 2400 Broening Highway Baltimore, MD 21224 Board of Supervisors Peach Bottom Township 545 Broad Street Ext.

Delta, PA 17314-9203 Mr. Richard McLean Power Plant and Environmental Review Division Department of Natural Resources B-3, Tawes State Office Building Annapolis, MD 21401 U.S. Nuclear Regulatory Commission Peach Bottom Atomic Power Station P.O. Box 339 Delta, PA 17314 Manager-Financial Control & Co-Owner Affairs Public Service Electric and Gas Company P.O. Box 236 Hancocks Bridge, NJ 08038-0236

Three Mile Island Nuclear Station, Unit 1 cc:

Site Vice President - Three Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC P. O. Box 480 Middletown, PA 17057 Chairman Board of County Commissioners of Dauphin County Dauphin County Courthouse Harrisburg, PA 17120 Chairman Board of Supervisors of Londonderry Township R.D. #1, Geyers Church Road Middletown, PA 17057 Senior Resident Inspector (TMI-1)

U.S. Nuclear Regulatory Commission P.O. Box 219 Middletown, PA 17057 Plant Manager - Three Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC P. O. Box 480 Middletown, PA 17057 Regulatory Assurance Manager - Three Mile Island Nuclear Station, Unit 1 AmerGen Energy Company, LLC P.O. Box 480 Middletown, PA 17057 Ronald Bellamy, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 Michael A. Schoppman Framatome ANP Suite 705 1911 North Ft. Myer Drive Rosslyn, VA 22209 Eric Epstein TMI Alert 4100 Hillsdale Road Harrisburg, PA 17112

Oyster Creek Nuclear Generating Station cc:

Site Vice President - Oyster Creek Nuclear Generating Station AmerGen Energy Company, LLC P.O. Box 388 Forked River, NJ 08731 Kathryn M. Sutton, Esquire Morgan, Lewis, & Bockius LLP 1111 Pennsylvania Avenue, NW Washington, DC 20004 Kent Tosch, Chief New Jersey Department of Environmental Protection Bureau of Nuclear Engineering CN 415 Trenton, NJ 08625 Mayor of Lacey Township 818 West Lacey Road Forked River, NJ 08731 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 445 Forked River, NJ 08731 Mayor of Lacey Township 818 West Lacey Road Forked River, NJ 08731 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 445 Forked River, NJ 08731 Oyster Creek Nuclear Generating Station Plant Manager AmerGen Energy Company, LLC P.O. Box 388 Forked River, NJ 08731

Enclosure REQUEST FOR ADDITIONAL INFORMATION RELATED TO RESPONSE TO GENERIC LETTER 2007-01, INACCESSABLE OR UNDERGROUND POWER CABLE FAILURES THAT DISABLE ACCIDENT MANAGEMENT SYSTEMS OR CAUSE PLANT TRANSIENTS FOR BRAIDWOOD STATION, UNIT NOS. 1 AND 2; BYRON STATION, UNIT NOS. 1 AND 2; CLINTON POWER STATION, UNIT 1; DRESDEN NUCLEAR POWER STATION, UNITS 1, 2, AND 3; LASALLE COUNTY STATION, UNITS 1 AND 2; LIMERICK GENERATING STATION, UNITS 1 AND 2; OYSTER CREEK NUCLEAR GENERATING STATION; PEACH BOTTOM ATOMIC POWER STATION, UNITS 1, 2, AND 3; QUAD CITIES NUCLEAR POWER STATION, UNITS 1 AND 2; AND THREE MILE ISLAND NUCLEAR STATION, UNIT 1, Docket Nos. STN 50-456 and STN 50-457; STN 50-454 and STN 50-455; 50-461; 50-10, 50-237, and 50-249; 50-373 and 50-374; 50-352 and 50-353; 50-219; 50-171, 50-277, and 50-278; 50-254 and 50-265; and 50-289 On February 8, 2007, the Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 2007-01, Inaccessible or Underground Power Cable Failures That Disable Accident Mitigation Systems or Cause Plant Transients, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML070360665). By letter dated April 13, 2007 (ADAMS Accession No. ML070940311), the NRC provided a response, including some clarification, to a Nuclear Energy Institute (NEI) letter dated March 26, 2007 (ADAMS Accession No. ML070950462). The NEI letter provided an interpretation of the information requested by GL 2007-01. By letter dated May 7, 2007, (ADAMS Accession no. ML071280098) Exelon Generation Company, LLC, and AmerGen Energy Company, LLC (the licensee), provided a response to the GL.

The NRC staff has been reviewing your response to GL 2007-01 and has determined that the following additional information is required. Please note that the first question is applicable to all the subject plants, while the second question is applicable only to Oyster Creek Nuclear Generating Station (Oyster Creek).

1. The NRC staff has received the cable failure histories for the subject plants in response to GL 2007-01. The licensee stated that the second phase of the cable-testing program (Step Voltage HiPot Testing) used appropriate diagnostic test methodologies if the

results of the first phase of the testing program indicated problems. Describe the diagnostic testing program and test methodologies implemented in the second phase of the cable-testing program.

2. Oyster Creek Only: The licensee stated that it had replaced 26 cables at Oyster Creek prior to failure due to indications from the cable-testing program. The licensee also stated that it replaced eight additional cables due to a possible extent of condition concern because of some failures of Anaconda UniShield cables. Provide the information for the replaced cables as requested in GL 2007-01, or justify why these cables are not within the scope of the GL.