ML063550049

RAI, Generic Letter 2003-01, Control Room Habitability

ML063550049
Person / Time
Site:	Browns Ferry
Issue date:	01/09/2007
From:	Chernoff M NRC/NRR/ADRO/DORL/LPLII-2
To:	Singer K Tennessee Valley Authority
Chernoff M, NRR/DORL, 415-4041
References
GL-03-001, TAC MB9776, TAC MB9777, TAC MB9778
Download: ML063550049 (4)

Text

January 9, 2007 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 NUCLEAR PLANT, UNITS 1, 2 AND 3, REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER 2003-01, CONTROL ROOM HABITABILITY (TAC NOS. MB9776, MB9777, AND MB9778)

Dear Mr. Singer:

By letter dated December 8, 2003, Tennessee Valley Authority submitted a response to U.S.

Nuclear Regulatory Commission (NRC) Generic Letter 2003-01, "Control Room Habitability."

Based on our review of your submittal, the NRC staff finds that a response to the enclosed request for additional information is needed before we can complete our review.

This request was discussed with Mr. Russell Thompson of your staff on January 5, 2007, and it was agreed that a response would be provided within 30 days of the issuance of this letter.

If you have any questions, please contact me at (301) 415-4041.

Sincerely,

/RA/

Margaret H. Chernoff, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-259, 50-260, and 50-296

Enclosure:

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

ML063550049 NRR-088 OFFICE LPL2-2/PM LPL2-2/PM LPL2-2/LA AFPB/BC LPL2-2/BC NAME EBrown MChernoff BClayton RDenning by BMozafari for Memo dated LRaghavan DATE 1/5/07 1/5/07 1/5/07 12 / 18 /06 1/9/07 REQUEST FOR ADDITIONAL INFORMATION REGARDING GENERIC LETTER (GL) 2003-01:

CONTROL ROOM HABITABILITY TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2 AND 3 DOCKET NOS. 50-259, 50-260, AND 50-296 In a December 8, 2003, letter, Tennessee Valley Authority (TVA) responded to questions concerning Generic Letter (GL) 2003-01, Control Room Habitability. TVA stated that Technical Specification (TS) surveillance requirement (SR) 3.7.3.4 calls for periodic testing of each Control Room Emergency Ventilation subsystem to verify that a Control Room Habitability Zone (CRHZ) pressure of greater than 0.125 inch water gauge can be maintained. TVA stated that this SR quantifies the CRHZ unfiltered in-leakage, that this testing has been performed on a periodic basis since 1991, and that the testing is adequate to demonstrate CRHZ integrity such that no TS changes are required.

Additional information concerning the complex testing/in-leakage quantification testing is required in order for the staff to complete its review of GL 2003-01 Item 1c. Provide information about this testing in sufficient detail such that the Nuclear Regulatory Commission staff is able to evaluate and determine if it is an acceptable method to demonstrate control room envelope integrity as described in Regulatory Guide 1.197 Demonstrating Control Room Envelope Integrity At Nuclear Power Reactors and Nuclear Energy Institute document, NEI 99-03 Control Room Habitability Assessment Guidance.

Enclosure

Mr. Karl W. Singer BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:

Mr. Ashok S. Bhatnagar, Senior Vice President Mr. Robert G. Jones, General Manager Nuclear Operations Browns Ferry Site Operations Tennessee Valley Authority Browns Ferry Nuclear Plant 6A Lookout Place Tennessee Valley Authority 1101 Market Street P.O. Box 2000 Chattanooga, TN 37402-2801 Decatur, AL 35609 Mr. Larry S. Bryant, Vice President Mr. Larry S. Mellen Nuclear Engineering & Technical Services Browns Ferry Unit 1 Project Engineer Tennessee Valley Authority Division of Reactor Projects, Branch 6 6A Lookout Place U.S. Nuclear Regulatory Commission 1101 Market Street 61 Forsyth Street, SW.

Chattanooga, TN 37402-2801 Suite 23T85 Atlanta, GA 30303-8931 Brian OGrady, Site Vice President Browns Ferry Nuclear Plant Ms. Beth A. Wetzel, Manager Tennessee Valley Authority Corporate Nuclear Licensing P.O. Box 2000 and Industry Affairs Decatur, AL 35609 Tennessee Valley Authority 4X Blue Ridge Mr. Preston D. Swafford, Senior Vice President 1101 Market Street Nuclear Support Chattanooga, TN 37402-2801 Tennessee Valley Authority 6A Lookout Place Mr. William D. Crouch, Manager 1101 Market Street Licensing and Industry Affairs Chattanooga, TN 37402-2801 Browns Ferry Nuclear Plant Tennessee Valley Authority General Counsel P.O. Box 2000 Tennessee Valley Authority Decatur, AL 35609 ET 11A 400 West Summit Hill Drive Senior Resident Inspector Knoxville, TN 37902 U.S. Nuclear Regulatory Commission Browns Ferry Nuclear Plant Mr. John C. Fornicola, General Manager 10833 Shaw Road Nuclear Assurance Athens, AL 35611-6970 Tennessee Valley Authority 6A Lookout Place State Health Officer 1101 Market Street Alabama Dept. of Public Health Chattanooga, TN 37402-2801 RSA Tower - Administration Suite 1552 Mr. Bruce Aukland, Plant Manager P.O. Box 303017 Browns Ferry Nuclear Plant Montgomery, AL 36130-3017 Tennessee Valley Authority P.O. Box 2000 Chairman Decatur, AL 35609 Limestone County Commission 310 West Washington Street Mr. Masoud Bajestani, Vice President Athens, AL 35611 Browns Ferry Unit 1 Restart Browns Ferry Nuclear Plant Mr. Robert H. Bryan, Jr., General Manager Tennessee Valley Authority Licensing and Industry Affairs P.O. Box 2000 Tennessee Valley Authority Decatur, AL 35609 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801