ML071920340
| 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:
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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 Senior Vice President Nuclear Generation Development and Construction Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Preston D. Swafford Senior Vice President Nuclear Support Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Walter M. Justice II Interim Vice President Nuclear Engineering & Technical Services 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 General Counsel Tennessee Valley Authority ET 11A 400 West Summit Hill Drive Knoxville, TN 37902 Mr. John C. Fornicola, General Manager Nuclear Assurance 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. Masoud Bajestani, Vice President Browns Ferry Unit 1 Restart 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. Larry S. Mellen Browns 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, 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 Mr. Robert H. Bryan, Jr., General Manager Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801