ML060040303
| ML060040303 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 01/13/2006 |
| From: | Marshall M Plant Licensing Branch III-2 |
| To: | Singer K Tennessee Valley Authority |
| Marshall M NRR/DLPM 415-2734 | |
| References | |
| TAC MC9025 | |
| Download: ML060040303 (5) | |
Text
January 13, 2006 Mr. Karl W. Singer Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
BROWNS FERRY UNIT 3 - REVISED IMPLEMENTATION DATE FOR AMENDMENT NO. 248 CONCERNING THE NUMBER OF EMERGENCY CORE COOLING SYSTEMS (TAC NO. MC9025) (TS-424)
Dear Mr. Singer:
In a letter dated September 27, 2005, the Tennessee Valley Authority (TVA) requested that the implementation date for Amendment No. 248 to the Browns Ferry Nuclear Plant (BFN) Unit 3 license (DPR-68) be extended. Amendment No. 248 revised the Updated Final Safety Analysis Report (UFSAR) to reflect a reduction in the number of low pressure emergency core cooling systems subsystems needed to mitigate certain design basis loss-of-coolant-accident scenarios. The amendment also modifies the required number of Technical Specification channels for the low pressure core injection pump start time delay relays.
These changes were requested to eliminate the potential for overloading a 4 kilovolt shutdown board (SBD) shared between Units 1 and 2 or a diesel generator (DG) when both Units 1 and 2 are in service. The request was approved for all three BFN units and the implementation should have been completed for Unit 1 within 60 days of issuance, and Unit 2 during the Cycle 13 refueling outage. Both the April 11, 2003, and the September 27, 2005, letters indicate that the Unit 3 hardware modifications are not necessary to prevent overloading the shared SBD or DGs. Based on the Units 1 and 2 modifications being complete and implementation of the associated modifications on Unit 3 not being needed to support the other BFN units, the U.S. Nuclear Regulatory Commission (NRC) approves the request to revise the implementation date for Amendment No. 248 to License DPR-68 from the Unit 3 Cycle 12 (March 2006) to the Cycle 13 refueling outage.
K. Singer January 13, 2006 The NRC staff notes that the UFSAR should be revised as appropriate to reflect the unit differences as the changes have already been completed on Units 1 and 2, and will not be implemented for 2 years on Unit 3.
If you have any questions, please contact Ms. Eva Brown at (301) 415-2315.
Sincerely,
/RA/
Michael L. Marshall, Jr., Chief Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-296, 50-259 and 50-260 cc: See next page
ML060040303 NRR-106 OFFICE LPL2-2/PM LPL2-2/LA LPL2-2/BC NAME EBrown BClayton MMarshall DATE 1/4/06 1/4/06 1/13/06
Mr. Karl W. Singer BROWNS FERRY NUCLEAR PLANT Tennessee 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, General Manager Nuclear Engineering Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Brian OGrady, Site Vice President Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Robert J. Beecken, Vice President Nuclear Support Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 General Counsel Tennessee Valley Authority ET 11A 400 West Summit Hill Drive Knoxville, TN 37902 Mr. John C. Fornicola, Manager Nuclear Assurance and Licensing Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Bruce Aukland, Plant Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Robert G. Jones, General Manager Browns Ferry Site Operations Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Glenn W. Morris, Manager Corporate Nuclear Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. William D. Crouch, Manager Licensing and Industry Affairs Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Senior Resident Inspector U.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant 10833 Shaw Road Athens, AL 35611-6970 State Health Officer Alabama Dept. of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, AL 36130-3017 Chairman Limestone County Commission 310 West Washington Street Athens, AL 35611