ML20072T524

Application for Amends to Licenses DPR-77 & DPR-79,revising TS Surveillance Requirements & Bases to Incorporate Clarifications Necessary to Separate Portion of SG Tubing from End of Tube Up to Start of tube-to-tubesheet Weld

ML20072T524
Person / Time
Site:	Sequoyah
Issue date:	09/08/1994
From:	Shell R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20072T526	List: ML20072T524 ML20072T534
References
TVA-SQN-TS-94-1, NUDOCS 9409150236
Download: ML20072T524 (3)

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. e nn Tennessee vaneyAumonty Post oSce Bas 20C0 Soody Daisy Tennessee 37379 September 8, 1994 TVA-SON-TS-94-14 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAH NUCLEAR PLANT (SON) - TECHNICAL SPECIFICATION (TS)

CHANGE 94-14, " REVISION OF REQUIPsEMENTS FOR STEAM GENERATOR (S/G)

TUBES IN THE REGION BELOW THE TUBESHEET"

References:

1. TVA letter to NRC dated June 28,1994, "Sequoyah Nuclear Plant (SON) - Technical Specification (TS) Change 94-09, Alternate Plugging Criteria for Steam Generator (S/G) Tubing - Unit 2"

2. TVA letter to NRC dated August 1,1994,"Sequoyah Nuclear Plant (SON) - Additional Information for Technical Specification (TS) 94-09, Alternate Plugging Criteria for Steam Generator (S/G)

Tubing - Unit 2" In accordance with 10 CFR 50.90, we are enclosing an amendment to Licenses DPR-77 and DPR-79 to change the TSs of SON Units 1 and 2. The proposed change revises TS surveillance requirements and bases to incorporate clarifications necessary to separate the portion of S/G tubing from the end of the tube up to the start of the tube-to-tubesheet weld from the remainder of the tube for the purposes of sample selection and repair.

The proposed TS change is identified in Enclosure 1. The justification for the proposed TS change is provided in Enclosure 2. A proposed determination of no significant safety hazards consideration performed pursuant to 10 CFR 50.92 is O

9409150236 940'?O8 $nD J

PDR ADOCK 05000327 P PDR 1 3

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U.S. Nuclear Regulatory Commission Page 2 September 8, 1994 provided in Enclosure 3. Enclosure 4 contains a Safety Evaluation Checklist (SECL-94-133) provided by Westinghouse Electric Corporation that contains a historical overview of the affected tubes as well as an assessment of the structural j integrity of the tubes. Enclosure 5 contains the commitment made within this letter.

This change is considered a clarification and as discussed with NRC on August 19,1994,is required in order to support Unit 2 restart (Mode 2). TVA j requests a 14-day implementation period for this TS change following issuance. Note that the current schedule for Unit 2 restart (Mode 2)is November 1,1994. Therefore, an expedited review is requested to support the restart schedule.

TVA is withdrawing TS Change 94-09. TVA previously submitted TS Change 94-09 by the referenced letters. TVA considers the commitments made in References 1 and 2 to be cancelled.

Please direct questions concerning this issue to Steve D. Gilley at (615) 843-7427.

Sincerely, 1

i R. H. Shell Manager i SON Site Licensing Swoyr to and subscribed before me this AZ4 day of M 1994 Notary Pdblic My Commission Expires /f!97 Enclosures cc: See page 3

4 U.S. Nuclear Regulatory Commission Page 3 September 8, 1994 Enclosures cc (Enclosures):

Mr. D. E. LaBarge, Project Manager l Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 Mr. Michael H. Mobley, Director (w/o Enclosures) ,

Division of Radiological Health )

l 3rd Floor l l L & C Annex l 401 Church Street Nashville, Tennessee 37243-1532 NRC Resident inspector

( Sequoyah Nuclear Plant

2600 Igou Ferry Road l

Soddy-Daisy, Tenraessee 37379-3624 l

Regional Administrator U.S. Nuclear Regulatory Commission Region Il

! 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323-2711 i

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