ML063540757

Letter, Closure of License Condition 2.C(15)

ML063540757
Person / Time
Site:	Browns Ferry
Issue date:	12/22/2006
From:	Chernoff M NRC/NRR/ADRO/DORL/LPLII-2
To:	Singer K Tennessee Valley Authority
Chernoff M, NRR/DORL, 415-4041
References
Download: ML063540757 (3)

Text

December 22, 2006Mr. Karl W. SingerChief Nuclear Officer and Executive Vice President Tennessee Valley Authority 64 Lookout Place 1101 Market Street Chattanooga, TN 37402-2801

SUBJECT:

BROWNS FERRY NUCLEAR PLANT, UNIT 1 - ACKNOWLEDGMENT OFUNIT 1 TURBINE BUILDING SEISMIC RUGGEDNESS COMPLETION OF LICENSE CONDITION 2.C(15)

Dear Mr. Singer:

By letter to the U.S. Nuclear Regulatory Commission (NRC) dated December 4, 2006, theTennessee Valley Authority (the licensee) submitted a letter documenting that License Condition 2.C(15) of the Renewed Facility Operating License issued on May 4, 2006, has been met. The license condition states:2.C.(15) The licensee is required to confirm that the conclusions made in TVA'sletter dated September 17, 2004, for the turbine building remain acceptable using seismic demand accelerations based on dynamic seismic analysis prior to the restart of Unit 1.The condition originates from the issuance of Amendment No. 251 for unit 1, regardingfull-scope implementation of alternative source term. In the Safety Evaluation, dated September 27, 2004, the NRC staff found that methods and assumptions for calculating seismic capacity and demands of the turbine building were approximate and reasonable. The license condition was established because the capacity/demand ratio was as low as 1.11 for the frame in the north-south direction, and several approximations were used in both assumptions and hand calculations.Based on the information contained in your December 4, 2006 letter, the tests and analysesrequired for meeting license condition 2.C(15) have been performed and this license condition has been satisfied.If you have any questions regarding this matter, I may be reached at 301-415-4041. Sincerely,/RA/Margaret H. Chernoff, Senior Project ManagerPlant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-259 cc: See next page

ML063540757NRR-106OFFICELPL2-2LPL2-2LPL2-2/LALPL2-2/BCNAMEMGutierrezMChernoffBClaytonLRaghavan DATE12/21/0612/22/0612/21/0612/22/06 Mr. Karl W. SingerBROWNS FERRY NUCLEAR PLANTTennessee Valley Authority cc:Mr. Ashok S. Bhatnagar, Senior Vice President Nuclear Operations Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Larry S. Bryant, Vice PresidentNuclear Engineering & Technical Services Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801Brian O'Grady, Site Vice PresidentBrowns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609Mr. Preston D. Swafford, Senior Vice PresidentNuclear Support Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 General CounselTennessee Valley Authority ET 11A 400 West Summit Hill Drive Knoxville, TN 37902Mr. John C. Fornicola, General ManagerNuclear Assurance Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801Mr. Bruce Aukland, Plant ManagerBrowns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609Mr. Masoud Bajestani, Vice PresidentBrowns Ferry Unit 1 Restart Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609Mr. Robert G. Jones, General ManagerBrowns Ferry Site Operations Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609Mr. Larry S. MellenBrowns Ferry Unit 1 Project Engineer Division of Reactor Projects, Branch 6 U.S. Nuclear Regulatory Commission 61 Forsyth Street, SW.

Suite 23T85 Atlanta, GA 30303-8931 Ms. Beth A. Wetzel, ManagerCorporate Nuclear Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801Mr. William D. Crouch, ManagerLicensing and Industry Affairs Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609Senior Resident InspectorU.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant 10833 Shaw Road Athens, AL 35611-6970State Health OfficerAlabama Dept. of Public Health RSA Tower - Administration

Suite 1552 P.O. Box 303017 Montgomery, AL 36130-3017ChairmanLimestone County Commission 310 West Washington Street Athens, AL 35611Mr. Robert H. Bryan, Jr., General ManagerLicensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801