ML062290496
| ML062290496 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar, Sequoyah  |
| Issue date: | 08/29/2006 |
| From: | Pickett D NRC/NRR/ADRO/DORL/LPLII-2 |
| To: | Singer K Tennessee Valley Authority |
| Pickett, D V, DORL/LPLII-2, 415-1364 | |
| References | |
| TAC MD2381, TAC MD2382, TAC MD2383 | |
| Download: ML062290496 (4) | |
Text
August 29, 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:
SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 AND WATTS BAR NUCLEAR PLANT UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION RE: RELIEF REQUEST G-RR PREEMPTIVE WELD OVERLAYS ON ALLOY 600 PRESSURIZER NOZZLE-TO-PIPE WELD OVERLAYS (TACS NOS. MD2381, MD2382, MD2383)
Dear Mr. Singer:
By letter dated June 16, 2006, Tennessee Valley Authority submitted Relief Request G-RR-1 requesting approval for use of alternatives to the requirements of the American Society of Mechanical Engineers Code,Section XI, for the specified Edition and Addenda, Article IWA-4000, for repair and replacement activities related to the performance of preemptive weld overlays, and/or needed weld overlay repairs at the Sequoyah Nuclear Plant, Units 1 and 2 and the Watts Bar Nuclear Plant, Unit 1.
As part of our review, the staff has identified the enclosed Request for Additional Information which will be necessary in order to complete our review. Based on discussions with your staff, we will expect your response by approximately September 18, 2006.
Sincerely,
/RA/
Douglas V. Pickett, Senior Project Manager Project Directorate II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-327, 50-328, 50-390
Enclosure:
As stated cc w/enclosure: See next page
August 29, 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:
SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 AND WATTS BAR NUCLEAR PLANT UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION RE: RELIEF REQUEST G-RR PREEMPTIVE WELD OVERLAYS ON ALLOY 600 PRESSURIZER NOZZLE-TO-PIPE WELD OVERLAYS (TACS NOS. MD2381, MD2382, MD2383)
Dear Mr. Singer:
By letter dated June 16, 2006, Tennessee Valley Authority submitted Relief Request G-RR-1 requesting approval for use of alternatives to the requirements of the American Society of Mechanical Engineers Code,Section XI, for the specified Edition and Addenda, Article IWA-4000, for repair and replacement activities related to the performance of preemptive weld overlays, and/or needed weld overlay repairs at the Sequoyah Nuclear Plant, Units 1 and 2 and the Watts Bar Nuclear Plant, Unit 1 As part of our review, the staff has identified the enclosed Request for Additional Information which will be necessary in order to complete our review. Based on discussions with your staff, we will expect your response by approximately September 18, 2006.
Sincerely,
/RA/
Douglas V. Pickett, Senior Project Manager Project Directorate II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-327, 50-328, 50-390
Enclosure:
As stated cc w/enclosure: See next page DISTRIBUTION:
PUBLIC LPL2-2 r/f RidsOgcRp RidsNrrDciCfeb RidsAcrsAcnwMailCenter RidsNrrDorlLpl2-2 EAndruszkiewicz RidsNrrLACSola RidsNrrPMDPickett RidsRgn2MailCenter ADAMS ACCESSION NO. ML062290496 NRR-088 OFFICE LPL2-2/PM LPL2-2/LA CFEB/BC LPL2-2/BC (A)
NAME DPickett RSola KGruss JDixon-Herrity DATE 08 / / 06 08 / 21 / 06 08 / 23 / 06 08 / 29 / 06 OFFICIAL RECORD COPY
Page 1 of 2 Mr. Karl W. Singer SEQUOYAH NUCLEAR PLANT Tennessee Valley Authority WATTS BAR NUCLEAR PLANT 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, Vice President Nuclear Engineering & Technical Services Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Robert J. Beecken, Vice President Nuclear Support Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Michael D. Skaggs, Site Vice President Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381 Mr. Randy Douet, Site Vice President Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 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. Glenn W. Morris, Manager Corporate Nuclear Licensing and Industry Affairs Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. Paul L. Pace, Manager Licensing and Industry Affairs ATTN: Mr. James D. Smith Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 Mr. David A. Kulisek, Plant Manager Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 Senior Resident Inspector Sequoyah Nuclear Plant U.S. Nuclear Regulatory Commission 2600 Igou Ferry Road Soddy Daisy, TN 37379 County Mayor Hamilton County Courthouse Chattanooga, TN 37402-2801 Mr. Paul L. Pace, Manager Licensing and Industry Affairs Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381 Jay Laughlin, Plant Manager Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381
Page 2 of 2 Mr. Karl W. Singer SEQUOYAH NUCLEAR PLANT Tennessee Valley Authority WATTS BAR NUCLEAR PLANT cc:
Senior Resident Inspector Watts Bar Nuclear Plant U.S. Nuclear Regulatory Commission 1260 Nuclear Plant Road Spring City, TN 37381 County Executive 375 Church Street Suite 215 Dayton, TN 37321 County Mayor P. O. Box 156 Decatur, TN 37322 Mr. Lawrence E. Nanney, Director Division of Radiological Health Dept. of Environment & Conservation Third Floor, L and C Annex 401 Church Street Nashville, TN 37243-1532 Ms. Ann P. Harris 341 Swing Loop Road Rockwood, Tennessee 37854
OFFICE OF NUCLEAR REACTOR REGULATION REQUEST FOR ADDITIONAL INFORMATION INSERVICE INSPECTION PROGRAM RELIEF REQUEST G-RR-1 SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 AND WATTS BAR NUCLEAR PLANT UNIT 1 TENNESSEE VALLEY AUTHORITY DOCKET NOS. 50-327, 50-328 AND 50-390 1.
Table 2 of Regulatory Guide 1.147, Rev. 14, identifies the Code Cases that are conditionally acceptable, i.e., for use by licensees within the limitations and conditions identified in the table. Those conditions are identified by the staff during its review of the Code Cases and are necessary to ensure an acceptable level of quality and safety.
Therefore, licensees must include those conditions in their Relief Requests. No provisions are made in Regulatory Guide 1.147 for allowing licensees to delete or alter those conditions.
Tennessee Valley Authoritys (TVA)s June 16, 2006, letter requests relief from the Code Case N-638-1 condition in Table 2 of Regulatory Guide 1.147. Specifically, the letter states in part that, In lieu of the ultrasonic examination acceptance criteria of the Construction Code in the condition for the use of Code Case N-638-1, the acceptance criteria of ASME Section XI Nonmandatory Appendix Q, as stipulated in the Conditions of RG-1.147, Rev. 14, for the use of Code Case N-504-2 will be applied for the entire structural weld overlay. Therefore, in accordance with the reasoning stated in the previous paragraph, this Relief Request must be supplemented to recognize the Licensees compliance with the condition for N-638-1 to provide an acceptable level of quality and safety. The condition stated in the Regulatory Guide must be included in the relief request.
2.
On page A4-2 of Attachment 4 to your submittal, you state that it is not practical to perform the full ultrasonic test (UT) of the 1.5T band. Your basis is that the existing nozzle configurations shown in the TVA drawings contained in Attachment 1, prevent you from completing the full UT. Please provide additional information to support your conclusion. The information provided should discuss the achievable amount of area that will be successfully examined for each pre-emptive weld overlay design configuration. Secondly, the UT examination should be performed on the maximum extent achievable.