ML022470325

Request for Additional Information on Technical Specification Change No.00-06, Regarding Tritium Production Core Amendments

ML022470325
Person / Time
Site:	Sequoyah
Issue date:	09/04/2002
From:	Hernan R NRC/NRR/DLPM/LPD2
To:	Scalice J Tennessee Valley Authority
Hernan R W, NRR/NRC/DLPM,301-415-2010
References
TAC MB2972, TAC MB2973
Download: ML022470325 (5)

Text

September 4, 2002 Mr. J. A. Scalice Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801

SUBJECT:

SEQUOYAH NUCLEAR PLANT (SQN), UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION ON TECHNICAL SPECIFICATION CHANGE NO.

00-06, REGARDING TRITIUM PRODUCTION CORE AMENDMENTS (TAC NOS. MB2972 AND MB2973)

Dear Mr. Scalice:

The subject Technical Specification Amendment Request was submitted to the U.S. Nuclear Regulatory Commission (NRC) for review and approval on September 21, 2001, by the Tennessee Valley Authority (TVA). The proposed license amendments would allow SQN, Units 1 and 2, to produce tritium in their cores. The NRC staff is in the process of reviewing TVAs submittal.

As discussed during a conference call on September 3, 2002, the NRC staff requires responses to the enclosed Request for Additional Information (RAI) to proceed with its review. This is the second RAI on this amendment request. During the call, Mr. Jim Smith of the SQN Licensing Staff stated that TVA would respond to this request by September 6, 2002.

Please have your staff contact me at (301) 415-2010 if there are any questions regarding the enclosed request.

Sincerely,

/RA/

Ronald W. Hernan, Senior Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328

Enclosure:

Request for Additional Information cc w/enclosure: See next page

September 4, 2002 Mr. J. A. Scalice Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801

SUBJECT:

SEQUOYAH NUCLEAR PLANT (SQN), UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION ON TECHNICAL SPECIFICATION CHANGE NO.

00-06, REGARDING TRITIUM PRODUCTION CORE AMENDMENTS (TAC NOS. MB2972 AND MB2973)

Dear Mr. Scalice:

The subject Technical Specification Amendment Request was submitted to the U.S. Nuclear Regulatory Commission (NRC) for review and approval on September 21, 2001, by the Tennessee Valley Authority (TVA). The proposed license amendments would allow SQN, Units 1 and 2, to produce tritium in their cores. The NRC staff is in the process of reviewing TVAs submittal.

As discussed during a conference call on September 3, 2002, the NRC staff requires responses to the enclosed Request for Additional Information (RAI) to proceed with its review. This is the second RAI on this amendment request. During the call, Mr. Jim Smith of the SQN Licensing Staff stated that TVA would respond to this request by September 6, 2002.

Please have your staff contact me at (301) 415-2010 if there are any questions regarding the enclosed request.

Sincerely,

/RA/

Ronald W. Hernan, Senior Project Manager, Section 2 Project Directorate II Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328

Enclosure:

Request for Additional Information cc w/enclosure: See next page DISTRIBUTION:

PDII-2 Reading File OGC M. Kowal PUBLIC K. Jabbour F. Akstulewicz RHernan B. Clayton PFredrickson ACRS ADAMS ACCESSION No.ML022470325 OFFICE PDII-2\PM PDII-2\LA PDII-2\SC NAME RHernan BClayton KJabbour DATE 09/3/02 09/3/02 09/3/02 OFFICIAL RECORD COPY

REQUEST FOR ADDITIONAL INFORMATION TRITIUM PRODUCTION CORE SEQUOYAH NUCLEAR PLANT DOCKET NOS. 50-327 and 50-328

1. The licensees response to Question 17 regarding the loss-of-coolant accident (LOCA) peak cladding temperature (PCT)-sensitive parameters should be consistent with the wording of the question.

2. The licensees response to Question 16 regarding the impacts of downcomer boiling is not complete. To adequately address this question, the licensee will need to provide an estimate of the impact of inadequate downcomer modeling in their Appendix K LOCA model on PCT results, and address the impact this would have on the tritium-producing burnable absorber rod temperatures. The licensee must also provide a schedule for reanalyzing their LOCA analyses once the downcomer modeling issues have been resolved.

Enclosure

Mr. J. A. Scalice Sequoyah 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