ML071920340

Request for Additional Information for Deletion of License Condition 2.G.(2) (TAC No. MD5871) (TS-461)

ML071920340
Person / Time
Site:	Browns Ferry
Issue date:	07/16/2007
From:	Ellen Brown NRC/NRR/ADRO/DORL/LPLII-2
To:	Campbell W Tennessee Valley Authority
Brown E, NRR/DORL, 415-2315
References
TAC MD5871
Download: ML071920340 (5)

Text

July 16, 2007 Mr. William R. Campbell 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, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION FOR DELETION OF LICENSE CONDITION 2.G.(2)

(TAC NO. MD5871)(TS-461)

Dear Mr. Campbell:

By letter dated June 25, 2007, the Tennessee Valley Authority (TVA, the licensee) submitted an amendment request for Browns Ferry Nuclear Plant (BFN), Unit 1, 2 and 3, as supplemented by a letter dated July 3, 2007.

Initially, the proposed amendment would change the Unit 1 operating license to delay the performance of a large transient test at 105-percent original licensed thermal power (OLTP) required by License Condition (LC) 2.G.(2). After discussions between TVA and the U.S. Nuclear Regulatory Commission (NRC), the request was revised on July 3, 2007, to permit the deletion of LC 2.G.(2) without additional testing at 105-percent OLTP. The enclosed Request for Additional Information (RAI) is related to this submittal.

A response to the enclosed RAI is needed before the NRC staff can complete the review. This request was discussed with Mr. David Langley of your staff on July 9, 2007, and TVA agreed to respond by July 20, 2007.

If you have any questions, please contact me at (301) 415-2315.

Sincerely,

/RA/

Eva A. Brown, Senior Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-259

Enclosure:

RAI cc w/enclosure: See next page

ML071920340 NRR-088 OFFICE LPL2-2/PM LPL2-2/LA DSS/SBWB/BC DSS/SBPB/BC LPL2-2/BC NAME EBrown BClayton GCranston JWermiel for JSegala BMozafari for TBoyce DATE 07/16 /07 07/ 16 /07 07/13/07 07/16/07 07 / 16 /07 Letter to William R. Campbell from Eva A. Brown dated July 16, 2007

SUBJECT:

BROWNS FERRY NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION FOR DELETION OF LICENSE CONDITION 2.G.(2)

(TAC NO. MD5871)(TS-461)

DISTRIBUTION:

PUBLIC LPL2-2 R/F RidsNrrDorlLpl2-2 RidsNrrPMEBrown RidsNrrLABClayton (Hard Copy)

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RidsNrrDraSbpb (JSegala)

RidsNrrPMTAlexion RidsAcrsAcnwMailCenter RidsOgcRp (MZobler)

JTatum AStubbs SJones MRazzaque

REQUEST FOR ADDITIONAL INFORMATION REMOVAL OF LICENSE CONDITION 2.G.(2)

TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNIT 1 DOCKET NO. 50-259

1. Identify the acceptance criteria (both primary and secondary) applicable to the generator load reject and main steam isolation valve (MSIV) closure tests. Explain (using major system component setpoints and time requirements) how the June 23rd MSIV isolation test satisfied the acceptance criteria and how the June 9th transient provides confidence based on modeling that the acceptance criteria would be satisfied for a generator load rejection from 105-percent original licensed thermal power.

2. For the MSIV Closure test at 3456 Megawatt thermal (MWt) [99.9 percent rated current licensed thermal power (CLTP)], provide the following information:

a) Provide the high pressure coolant inject/reactor core isolation cooling injection water temperature; b) Provide an estimate of the fraction of decay heat from the steady state value at the time of the test, and how that differs from the assumptions in the analysis of record.

3. Section 14.5.2.7.1 of the Updated Final Safety Analysis Report (UFSAR) provides the analysis of an MSIV closure test at 3458 MWt (100 percent CLTP) analysis. From that analysis, provide the peak pressure calculated by ODYN and how much higher it was from the peak pressure during the test.

4. Additionally, Section 14.5.2.7 of the UFSAR indicated that the main steam relief valves (MSRVs) should lift momentarily during an MSIV closure. Address why the MSRVs did not lift, given that all 12 were predicted to be opened. Address the affect different initial conditions and operator action had on the observed results when compared to the expected.

William R. Campbell, Jr. BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:

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

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