ML080910012
| ML080910012 | |
| Person / Time | |
|---|---|
| Site: | Watts Bar  |
| Issue date: | 03/31/2008 |
| From: | Milano P Plant Licensing Branch III-2 |
| To: | Bhatnagar A Tennessee Valley Authority |
| Milano P, NRR/DORL/LPLA, 415-1457 | |
| References | |
| TAC MD6726 | |
| Download: ML080910012 (4) | |
Text
March 31, 2008 Mr. Ashok S. Bhatnagar Senior Vice President Nuclear Generation Development and Construction 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
WATTS BAR NUCLEAR PLANT (WNP), UNIT 2 - REQUEST FOR ADDITIONAL INFORMATION REGARDING RESPONSE TO GENERIC LETTER 2004-02, POTENTIAL IMPACT OF DEBRIS BLOCKAGE ON EMERGENCY RECIRCULATION DURING DESIGN BASIS ACCIDENTS AT PRESSURIZED-WATER REACTORS (TAC NO. MD6726)
Dear Mr. Bhatnagar:
By letter to the Nuclear Regulatory Commission (NRC) dated September 7, 2007 (Agencywide Documents Access and Management System Accession No. ML072570676), Tennessee Valley Authority (TVA) submitted its initial responses to several Bulletins and Generic Letters for the Watts Bar Nuclear Plant, Unit 2 (WBN 2). In particular, TVA provided information regarding Generic Letter (GL) 2004-02, Potential Impact of Debris Blockage on Emergency Recirculation during Design Basis Accidents at PWRs, and Bulletin 03-01, Potential Impact of Debris Blockage on Emergency Sump Recirculation.
The NRC staff is reviewing your submittal and has determined that additional information is needed to complete its review. Specifically, the staff requests that TVA provide the following information:
In its response for GL 2004-02, TVA indicates that the WBN 2 steam generators (SGs) are coated. Describe the coating material on the SGs, and state whether the coating material is qualified for design-basis accident conditions. Also, does TVA intend to leave the coating on the SGs?
This request for additional information was discussed with members of your staff, and it was agreed that a response would be provided by May 15, 2008. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1457.
Sincerely,
/RA/
Patrick D. Milano, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-391 cc: See next page
This request for additional information was discussed with members of your staff, and it was agreed that a response would be provided by May 15, 2008. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1457.
Sincerely,
/RA/
Patrick D. Milano, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-391 cc: See next page DISTRIBUTION:
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RidsNrrDciCsgb J. Burke, NRR RidsAcrsAcnw&mMailCenter RidsOgcRp RidRgn2MailCenter ADAMS Accession Number: ML080910012 OFFICE LWBSPB/PM LWBSPB/LA DCI/CSGB/BC LWBSPB/BC NAME PMilano BClayton AHiser LRaghavan DATE 03/31/08 03/ 31 /08 11/09/07 03/ 31 /07 OFFICIAL RECORD COPY
Ashok S. Bhatnagar Tennessee Valley Authority WATTS BAR NUCLEAR PLANT, UNIT 2 cc:
Mr. Gordon P. Arent New Generation Licensing Manager Tennessee Valley Authority 5A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 Mr. Masoud Bajestani, Vice President Watts Bar Unit 2 Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000, EQB 1B Spring City, TN 37381 Senior Resident Inspector, Unit 2 Watts Bar Nuclear Plant U.S. Nuclear Regulatory Commission 1260 Nuclear Plant Road Spring City, TN 37381 Mr. Michael K. Brandon, Manager Licensing and Industry Affairs Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381 Mr. William R. Campbell, Jr.
Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 County Executive 375 Church Street Suite 215 Dayton, TN 37321 County Mayor P. O. Box 156 Decatur, TN 37322 Mr. John C. Fornicola, General Manager Nuclear Assurance Tennessee Valley Authority 3R Lookout Place 1101 Market Street Chattanooga, TN 37402-2801 General Counsel Tennessee Valley Authority 6A West Tower 400 West Summit Hill Drive Knoxville, TN 37902 Mr. Michael J. Lorek, Plant Manager Watts Bar Nuclear Plant Tennessee Valley Authority P.O. Box 2000 Spring City, TN 37381 Mr. Lawrence E. Nanney, Director Tennessee Dept. of Environmental Health &
Conservation Division of Radiological Health 3rd Floor, L&C Annex 401 Church Street Nashville, TN 37243-1532 Mr. Larry E. Nicholson, General Manager Performance Improvement Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801