ML082020005: Difference between revisions
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{{#Wiki_filter:July 21, 2008 Mr. William R. Campbell, Jr. | {{#Wiki_filter:July 21, 2008 Mr. William R. Campbell, Jr. | ||
Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 | Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 | ||
==SUBJECT:== | ==SUBJECT:== | ||
SEQUOYAH NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE CYCLE 15 REFUELING OUTAGE (TAC NO. MD8755) | SEQUOYAH NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE CYCLE 15 REFUELING OUTAGE (TAC NO. MD8755) | ||
==Dear Mr. Campbell:== | ==Dear Mr. Campbell:== | ||
By {{letter dated|date=April 23, 2008|text=letter dated April 23, 2008}}, Tennessee Valley Authority (TVA) submitted information summarizing the results of the fall 2007 steam generator (SG) tube inspections performed at Sequoyah Nuclear Plant Unit 1 during the Cycle 15 refueling outage. | |||
By letter dated April 23, 2008, Tennessee Valley Authority (TVA) submitted information summarizing the results of the fall 2007 steam generator (SG) tube inspections performed at Sequoyah Nuclear Plant Unit 1 during the Cycle 15 refueling outage. | |||
In order for the staff to complete its review of the information provided, we request that TVA provide responses to the enclosed request for additional information (RAI). Based on discussions with your staff, we understand that you plan to respond to the enclosed RAI within 30 days of receipt. | In order for the staff to complete its review of the information provided, we request that TVA provide responses to the enclosed request for additional information (RAI). Based on discussions with your staff, we understand that you plan to respond to the enclosed RAI within 30 days of receipt. | ||
If you have any questions about this material, please contact me at (301) 415-3974. | If you have any questions about this material, please contact me at (301) 415-3974. | ||
Sincerely, | Sincerely, | ||
/RA/ | |||
Brendan T. Moroney, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-327 | Brendan T. Moroney, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-327 | ||
==Enclosure:== | ==Enclosure:== | ||
Request for Additional Information cc: See next page | Request for Additional Information cc: See next page | ||
ML082020005 NRR-088 OFFICE LPL2-2/PM LPL2-2/LA CSGB/BC LPL2-2/BC NAME BMoroney RSola AHiser (By memo) | |||
TBoyce DATE 07/21/08 07/21/08 6 /19 /08 07/21/08 | |||
Enclosure REQUEST FOR ADDITIONAL INFORMATION STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE CYCLE 15 REFUELING OUTAGE SEQUOYAH NUCLEAR PLANT, UNIT 1 By {{letter dated|date=April 23, 2008|text=letter dated April 23, 2008}}, Tennessee Valley Authority submitted information summarizing the results of the fall 2007 steam generator (SG) tube inspections performed at Sequoyah Nuclear Plant Unit 1 during the Cycle 15 refueling outage. In order for the staff to complete its review, the following additional information is requested: | |||
: 1. For each refueling outage and SG tube inspection since installation of the SGs, please provide the cumulative effective full power years that the SGs have operated. | : 1. For each refueling outage and SG tube inspection since installation of the SGs, please provide the cumulative effective full power years that the SGs have operated. | ||
: 2. Please discuss the scope and results of any secondary side inspections. | : 2. Please discuss the scope and results of any secondary side inspections. | ||
: 3. It was indicated that the scope of the bobbin coil examinations were expanded in SGs 1, 2, and 3. Please discuss the reason for expanding the scope of inspection in these three SGs. | : 3. It was indicated that the scope of the bobbin coil examinations were expanded in SGs 1, 2, and 3. Please discuss the reason for expanding the scope of inspection in these three SGs. | ||
: 4. Please discuss what types of indications/locations are included in the diagnostic | : 4. Please discuss what types of indications/locations are included in the diagnostic | ||
+PointTM inspections. Please discuss how you concluded that the bobbin indications were a result of U-bend wear (i.e., were rotating probe inspections (or comparable inspections) performed at these locations to permit characterization of the bobbin signal so as to confirm that there was a volumetric indication associated with the tube support contact points?). | |||
William R. Campbell, Jr. | William R. Campbell, Jr. | ||
Mr. Ashok S. Bhatnagar Senior Vice President | SEQUOYAH 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 Vice President Nuclear Support Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. H. Rick Rogers Vice President Nuclear Engineering & Technical Services Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Timothy P. Cleary, Site Vice President Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 General Counsel Tennessee Valley Authority 6A West Tower 400 West Summit Hill Drive Knoxville, TN 37902 Mr. John C. Fornicola, Manager Nuclear Assurance Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 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. James D. Smith, Manager Licensing and Industry Affairs Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 Mr. Christopher R. Church, 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 Mr. Lawrence E. Nanney, Director TN Dept. of Environment & Conservation Division of Radiological Health Third Floor, L and C Annex 401 Church Street Nashville, TN 37243-1532 County Mayor Hamilton County Courthouse Chattanooga, TN 37402-2801 Mr. Larry E. Nicholson, General Manager Performance Improvement Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Michael A. Purcell Senior Licensing Manager Nuclear Power Group Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Ms. Ann P. Harris 341 Swing Loop Road Rockwood, TN 37854}} | |||
Latest revision as of 16:01, 14 January 2025
| ML082020005 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/21/2008 |
| From: | Moroney B NRC/NRR/ADRO/DORL/LPLII-2 |
| To: | Campbell W Tennessee Valley Authority |
| Moroney B, NRR/DORL, 415-3974 | |
| References | |
| TAC MD8755 | |
| Download: ML082020005 (4) | |
Text
July 21, 2008 Mr. William R. Campbell, Jr.
Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
SEQUOYAH NUCLEAR PLANT, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION REGARDING STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE CYCLE 15 REFUELING OUTAGE (TAC NO. MD8755)
Dear Mr. Campbell:
By letter dated April 23, 2008, Tennessee Valley Authority (TVA) submitted information summarizing the results of the fall 2007 steam generator (SG) tube inspections performed at Sequoyah Nuclear Plant Unit 1 during the Cycle 15 refueling outage.
In order for the staff to complete its review of the information provided, we request that TVA provide responses to the enclosed request for additional information (RAI). Based on discussions with your staff, we understand that you plan to respond to the enclosed RAI within 30 days of receipt.
If you have any questions about this material, please contact me at (301) 415-3974.
Sincerely,
/RA/
Brendan T. Moroney, Project Manager Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-327
Enclosure:
Request for Additional Information cc: See next page
ML082020005 NRR-088 OFFICE LPL2-2/PM LPL2-2/LA CSGB/BC LPL2-2/BC NAME BMoroney RSola AHiser (By memo)
TBoyce DATE 07/21/08 07/21/08 6 /19 /08 07/21/08
Enclosure REQUEST FOR ADDITIONAL INFORMATION STEAM GENERATOR TUBE INSERVICE INSPECTION REPORT FOR THE CYCLE 15 REFUELING OUTAGE SEQUOYAH NUCLEAR PLANT, UNIT 1 By letter dated April 23, 2008, Tennessee Valley Authority submitted information summarizing the results of the fall 2007 steam generator (SG) tube inspections performed at Sequoyah Nuclear Plant Unit 1 during the Cycle 15 refueling outage. In order for the staff to complete its review, the following additional information is requested:
- 1. For each refueling outage and SG tube inspection since installation of the SGs, please provide the cumulative effective full power years that the SGs have operated.
- 2. Please discuss the scope and results of any secondary side inspections.
- 3. It was indicated that the scope of the bobbin coil examinations were expanded in SGs 1, 2, and 3. Please discuss the reason for expanding the scope of inspection in these three SGs.
- 4. Please discuss what types of indications/locations are included in the diagnostic
+PointTM inspections. Please discuss how you concluded that the bobbin indications were a result of U-bend wear (i.e., were rotating probe inspections (or comparable inspections) performed at these locations to permit characterization of the bobbin signal so as to confirm that there was a volumetric indication associated with the tube support contact points?).
William R. Campbell, Jr.
SEQUOYAH 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 Vice President Nuclear Support Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. H. Rick Rogers Vice President Nuclear Engineering & Technical Services Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Timothy P. Cleary, Site Vice President Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 General Counsel Tennessee Valley Authority 6A West Tower 400 West Summit Hill Drive Knoxville, TN 37902 Mr. John C. Fornicola, Manager Nuclear Assurance Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 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. James D. Smith, Manager Licensing and Industry Affairs Sequoyah Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Soddy Daisy, TN 37384-2000 Mr. Christopher R. Church, 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 Mr. Lawrence E. Nanney, Director TN Dept. of Environment & Conservation Division of Radiological Health Third Floor, L and C Annex 401 Church Street Nashville, TN 37243-1532 County Mayor Hamilton County Courthouse Chattanooga, TN 37402-2801 Mr. Larry E. Nicholson, General Manager Performance Improvement Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Michael A. Purcell Senior Licensing Manager Nuclear Power Group Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Ms. Ann P. Harris 341 Swing Loop Road Rockwood, TN 37854