ML052140646

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Summary of a Conference Call Held on July 7, 2005, Between the NRC Staff and Tennessee Valley Authority (TVA) License Renewal Staff, Concerning Information on Browns Ferry Nuclear Plant, Units 1, 2 and 3, License Renewal Application
ML052140646
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 08/02/2005
From: Yoira Diaz-Sanabria
NRC/NRR/DRIP/RLEP
To:
Tennessee Valley Authority
DIAZ-SANABRIA, Y /NRR/DRIP/RLEP 415-1594
References
TAC MC1704, TAC MC1705, TAC MC1706
Download: ML052140646 (9)


Text

August 2, 2005 LICENSEE:

Tennessee Valley Authority (TVA)

FACILITY:

Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3

SUBJECT:

SUMMARY

OF A CONFERENCE CALL HELD ON JULY 7, 2005, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION (NRC) STAFF AND TENNESSEE VALLEY AUTHORITY (TVA) LICENSE RENEWAL STAFF, CONCERNING INFORMATION ON BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2, AND 3, LICENSE RENEWAL APPLICATION (TAC NOS. MC1704, MC1705, AND MC1706)

The NRC, the staff, and representatives of TVA held a telephone conference on July 7, 2005, to discuss and clarify the staffs follow-up to request for additional information (RAI) concerning the Browns Ferry Nuclear Plant, Units 1, 2, and 3, license renewal application. The conference call was useful in clarifying the intent of the staffs follow-up questions. provides the follow-up to the questions discussed with the applicant. Enclosure 2 provides a list of the conference call participants.

Sincerely,

/RA/

Yoira K. Diaz Sanabria, Project Manager License Renewal Section A License Renewal and Environmental Impacts Program Division of Regulatory Improvement Programs Office of Nuclear Reactor Regulation Docket Nos.: 50-259, 50-260, and 50-296

Enclosure:

As stated cc w/encls: See next page

August 2, 2005 LICENSEE:

Tennessee Valley Authority (TVA)

FACILITY:

Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3

SUBJECT:

SUMMARY

OF A CONFERENCE CALL HELD ON JULY 7, 2005, BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION (NRC) STAFF AND TENNESSEE VALLEY AUTHORITY (TVA) LICENSE RENEWAL STAFF, CONCERNING INFORMATION ON BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2, AND 3, LICENSE RENEWAL APPLICATION (TAC NOS. MC1704, MC1705, AND MC1706)

The NRC, the staff, and representatives of TVA held a telephone conference on July 7, 2005, to discuss and clarify the staffs follow-up to request for additional information (RAI) concerning the Browns Ferry Nuclear Plant, Units 1, 2, and 3, license renewal application. The conference call was useful in clarifying the intent of the staffs follow-up questions. provides the follow-up to the questions discussed with the applicant. Enclosure 2 provides a list of the conference call participants.

Sincerely,

/RA/

Yoira K. Diaz Sanabria, Project Manager License Renewal Section A License Renewal and Environmental Impacts Program Division of Regulatory Improvement Programs Office of Nuclear Reactor Regulation Docket Nos.: 50-259, 50-260, and 50-296

Enclosure:

As stated cc w/encls: See next page DISTRIBUTION: See next page ADAMS Accession no.: ML052140646 Document Name: E:\\Filenet\\ML052140646.wpd OFFICE PM:RLEP LA:RLEP PM:RLEP DE:EMEB DE:EMCB DE:EMCB SC:RLEP NAME YDiaz-Sanabria MJenkins RSubbaratnam MHartzman BElliot GCheruvenki SLee DATE 08/ 1 /05 07/ 29 /05 08/ 1 /05 08/ 1 /05 08/ 2 /05 08/ 1 /05 08/ 2 /05 OFFICIAL RECORD COPY

BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:

Mr. Karl W. Singer Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 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 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 M. Aukland, Plant Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Jon R. Rupert, 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 Browns Ferry Unit 1 Plant Restart Manager Browns Ferry Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Decatur, AL 35609 Mr. Scott M. Shaeffer 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 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

BROWNS FERRY NUCLEAR PLANT Tennessee Valley Authority cc:

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. James Ross Nuclear Energy Institute 1776 I St., NW, Suite 400 Washington, DC 20006-2708 Mr. Robert J. Beecken, Vice President Nuclear Operations Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801

DISTRIBUTION: Letter to K. Singer, Re: RAI for review of Browns Ferry Nuclear Plant, Units 1 and 2, Dated: August 2, 2005 Adams Accession No.: ML052140646 HARD COPY RLEP RF E-MAIL:

RidsNrrDrip RidsNrrDe G. Bagchi K. Manoly W. Bateman J. Calvo R. Jenkins J. Fair RidsNrrDssa RidsNrrDipm D. Thatcher R. Pettis G. Galletti C. Li K. Winsberg (RidsOgcMailCenter)

R. Weisman M. Mayfield A. Murphy S. Smith (srs3)

S. Duraiswamy Y. L. (Renee) Li RLEP Staff K. Jabbour C. Julian (RII)

S. Cahill (RII)

A. Hodgdon C. Carpenter D. Coe E. Kleeh M. Marshall G. Cheruvenki B. Elliot M. Hartzman TELEPHONE CONFERENCE CALL BETWEEN THE U.S. NUCLEAR REGULATORY COMMISSION (NRC) AND TENNESS VALLEY AUTHORITY (TVA) HELD ON JULY 7, 2005 FOLLOW-UP QUESTIONS REGARDING BFN LRA MEETING

SUMMARY

The NRC, the staff, and representatives of TVA held a telephone conference call on July 7, 2005, to discuss and clarify the staffs follow-up to a request for additional information (RAI) concerning the Browns Ferry Nuclear Plant, Units 1, 2, and 3, license renewal application.

The questions related to previous staff RAI on the Time-Limited Aging Analysis on core shroud hold down bolts stress relaxation. The following follow-up questions were discussed with the applicant.

Follow-up to RAI 4.7.7-1 Figure 1 of the applicants submittal dated June 29, 2005, compares the stress relaxation for the BFN core plate hold-down bolts, to the stress relaxation from the data derived from springs and bent beam stainless steel specimens. The staff request that the applicant provide information regarding the values of neutron flux and temperature at which the bent beam and spring test specimens were exposed, and compare them to the neutron flux and temperature values of the BFNs core plate hold-down bolts. If the neutron flux and temperature values for the BFN core plate hold-down bolts are different than that for the bent beam and spring test specimen data, evaluate the impact of these differences on the predicted stress relaxation values of the BFN core plate hold-down bolts.

Follow-up to RAI 4.7.7-2 The bending stresses in the hold-down bolts result from the horizontal loads acting on the core plate. Some of these loads may depend on the pre-loading of the hold-down bolts. The core plate is also subject to vertical loads, which could possibly cause portions of the core plate rim to separate from the shroud support, as a result of smaller bolt pre-loads.

Show that under Scenario 3 of BWRVIP-25, the axial and bending stresses for the mean and highest loaded hold-down bolts will not exceed the ASME Section III allowable stresses for Pm and Pm+Pb, as a result of a 20% reduction in the specified bolt pre-load. State clearly the assumptions on which the analysis was based.

It was agreed that the TVA will work with the vendor, General Electric Company, and respond to the staff follow up questions at their earliest.

Enclosure 2 LIST OF PARTICIPANTS FOR TELEPHONE CONFERENCE CALL TO DISCUSS BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2 AND 3 LICENSE RENEWAL APPLICATION JULY 7, 2005 Participants Affiliations Ram Subbaratnam U.S. Nuclear Regulatory Commission (NRC)

Yoira Diaz NRC Ganesh Cheruvenki NRC Barry Elliot NRC Lambros Lois NRC Mark Hartzman NRC Ken Brune Tennessee Valley Authority (TVA)

Mickey Hamby TVA Bill Crouch TVA Joe McCarthy TVA Vic Schiavone TVA Brian Frew General Electric (GE)

Ron Horn GE Dave Sandusky GE Rich Davis GE