ML023530628

Steam Generator Compartment Roof Modification Topical Report

ML023530628
Person / Time
Site:	Sequoyah
Issue date:	12/19/2002
From:	Hernan R NRC/NRR/DLPM/LPD2
To:	Scalice J Tennessee Valley Authority
Hernan R W, NRR/NRC/DLPM,301-415-2010
References
TAC MB5387
Download: ML023530628 (3)

Text

December 19, 2002 Mr. J. A. Scalice 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 STEAM GENERATOR COMPARTMENT ROOF MODIFICATION TOPICAL REPORT (TAC NO. MB5387)

Dear Mr. Scalice:

On March 28, 2002, the Tennessee Valley Authority (TVA, the licensee) submitted three topical reports to the U.S. Nuclear Regulatory Commission (NRC) for review and approval. The topical reports provide the technical basis for the methodology and associated modifications to be applied during the Sequoyah Nuclear Plant (SQN) Unit 1 steam generator (SG) replacement project. The NRC staff held a public meeting on October 24, 2002, to discuss questions associated with all three topical reports for the SG replacement project. A request for additional information (RAI) was issued on December 4, 2002.

The NRC staff has reviewed your report Topical Report No. 24370-TR-C-003, Steam Generator Compartment Roof Modification, which proposes the use of through-bolted splice-plate connections to reconstruct the SG compartment roofs. Based on the information provided in the submittal and technical discussions with your staff during a public meeting on October 24, 2002 and in a conference call on December 17, 2002, the staff finds that the design approach as currently proposed by TVA, to reconstruct the SG compartment modification roof using through-bolted splice-plate connections, is not acceptable.

The staffs assessment of the technical concerns with Topical Report No. 24370-TR-C-003 will be forwarded by correspondence within 30 days. As discussed with Mr. Pedro Salas on December 18, the NRC has scheduled a public meeting on December 23, 2002, to discuss the technical reasons for the denial of the topical report and proposed alternatives.

If you have any questions, please feel free to call Ms. Eva Brown at (301) 415-2315 or Mr. Allen Howe at (301) 415-2024.

Sincerely,

/RA/

Ronald W. Hernan, Senior Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-327 cc: See next page

ML023530628 OFFICE PDII-2/PM PDII-2/PM PDII-2/PM PDII-2/LA PDII-2/SC NAME EBrown RAnand RHernan BClayton AHowe DATE 12/ 19 /02 12/ 19/ 02 12/ 19 /02 12/ 19/02 12/ 19/02 Mr. J. A. Scalice SEQUOYAH NUCLEAR PLANT Tennessee Valley Authority cc:

Mr. Karl W. Singer, Senior Vice President Mr. Pedro Salas, Manager Nuclear Operations Licensing and Industry Affairs Tennessee Valley Authority Sequoyah Nuclear Plant 6A Lookout Place Tennessee Valley Authority 1101 Market Street P.O. Box 2000 Chattanooga, TN 37402-2801 Soddy Daisy, TN 37379 Mr. James E. Maddox, Acting Vice President Mr. D. L. Koehl, Plant Manager Engineering & Technical Services Sequoyah Nuclear Plant Tennessee Valley Authority Tennessee Valley Authority 6A Lookout Place P.O. Box 2000 1101 Market Street Soddy Daisy, TN 37379 Chattanooga, TN 37402-2801 Senior Resident Inspector Mr. Richard T. Purcell Sequoyah Nuclear Plant Site Vice President U.S. Nuclear Regulatory Commission Sequoyah Nuclear Plant 2600 Igou Ferry Road Tennessee Valley Authority Soddy Daisy, TN 37379 P.O. Box 2000 Soddy Daisy, TN 37379 Mr. Lawrence E. Nanney, Director Division of Radiological Health General Counsel Dept. of Environment & Conservation Tennessee Valley Authority Third Floor, L and C Annex ET 11A 401 Church Street 400 West Summit Hill Drive Nashville, TN 37243-1532 Knoxville, TN 37902 County Executive Mr. Robert J. Adney, General Manager Hamilton County Courthouse Nuclear Assurance Chattanooga, TN 37402-2801 Tennessee Valley Authority 6A Lookout Place Ms. Ann P. Harris 1101 Market Street 341 Swing Loop Road Chattanooga, TN 37402-2801 Rockwood, Tennessee 37854 Mr. Mark J. Burzynski, Manager Nuclear Licensing Tennessee Valley Authority 4X Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801