ML20205H923

Responds to 881021 Request for Discretionary Enforcement Re Testing Turbine Driven Auxiliary Feedwater Pump in Mode 3 to Determine If Pump Operable,Per Tech Spec 3.7.1.2.Addl 48 H in Mode 3 Granted.Extension Period Expires on 881025

ML20205H923
Person / Time
Site:	Sequoyah
Issue date:	10/24/1988
From:	Partlow J NRC OFFICE OF SPECIAL PROJECTS
To:	White S TENNESSEE VALLEY AUTHORITY
References
NUDOCS 8810310221
Download: ML20205H923 (4)

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gfe.g*'o, UNITED STATES g'> .-o 'is NUCLEAR REGULATORY COMMISSION O/' ~

W ASHINGTON D. C. 20555 r; %  !

'% ),', , October 24, 1938 Docket No. 50-377 Mr. S. A. White Senior Vice President, Nuclear Power Tenr.essee Valley Authority 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801

SUBJECT:

DISCRETIONARY ENTORCEMENT RELATED TO THE TURBINE DRIVEN AUXILIARY FEEDWATER PUliP - SEQUOYAH UNIT 1 This letter is in response to your request of October 21, 1988 that NRC exercise discretionary enforcement on Sequoyah Unit 1 in the case of Technical Specification (TS) 3.7.1.2. This concerns the testing of the turbine driven auxiliary feedwater pump (TC AFWP) in Mode 3 to determine if the pump is cperable. The TS .110w you 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> af ter entering isode 3 to test the pump to show it is operable.

Unit 1 entered Moda 3 at 12:15 a.m. on October 20, 19ES. The initial testing of the pump indicated problems with the governor. The Action Statement for TS 3.7.1.2 would have required the plant to enter Mode 4 if the pump were not declared operable. You requested an additional 48 hcurs until 12:15 a.m. on October 25, 1968 for Unit 1 to remain in Mode 3 where conditions allow the generation of steam to test the pump. Conditions in Mode 4 do not allow the generation of adequate steam pressure to test the pump.

We have reviewed the basis for your request. The staff concurs that this is not a problem which could have been foreseen. Also, noting that the core was refueled in 1985 and has been subcritical for over 3 years, the core decay heat is very low. Therefore, it is safe to continue testing the TDAFWP because it is one of three auxiliary feedwater pumps and the other two punps are available if needed. The aJditional 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> in Moce 3 is granted for TS 3.7.1.2 for the TDAFWP. This extension period expires at 12:15 a.m. on October 25, 1988.

SS10310:21 se1024 PER ADOCK 0S000327 P poc

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l Mr. S. A. White October 24. 1988 l TVA was informed of this extension on October 21, 1988 in a discussion between S. D. Richardson (NRC) and John LaPoint (TVA).

Sincerely.

Original Signed by James G. Partlow. Director Office of Special Projects cc: See next page DISTRIBUTTON

. Docket < File NRC PDR Local PDR Projects Reading OSP Reading J. Partlow S. Richardson S. Black B. D. Liaw F. t Coy K. Jenison L. Watson D. Crutchfield B. Grimes E. Jordan M. Sims JDonohew J. Rutberg T. Barnhart (4)

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1 Mr. S. A. White Sequoyah Nuclear Plant ,

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General Counsel Regional Ad'.11nistrator, Region !!

Tennessee Valley Authority U.S. Nuclear Regulatory Commission 400 West Summit Hill Drive 101 Marietta Street, N.W. ,

E11 833 Atlanta, Georgia 30323 Knoxville, Tennessee 3790?

Mr. R. L. Gridley c/o U.S. Nuclear Regulatory Commission Tennessee Valley Authority 2600 Igou Ferry Road SN 157B Lookout Place Soddy Daisy. Tennessee 37379  :

Chattanooga, Tennessee 37402-2801 Mr. John T. LaPoint Mr. Michael H. Mobley, Director -

Tennessee Valley Authority Division of Radiological Health -

Sequoyah Nuclear Plant T.E.R.R.A. Building, 6th Floor P.O. Box 2000 150 9th Avenue North ,

Soddy Daisy, Tennessee 37379 Nashville, Tennessee 37219-5404 l Mr. M. Ray Dr. Henry Myers, Science Advisor (

Tennessee Valley Authority Comittee on Interior  ;

Sequoyah Nuclear Plant and Insular Affairs  !

P.O. Box 2000 U.S. House of Representatives Soddy Daisy Tennessee 37379 Washington. 0.C. 20515  ;

Mr. D. L. Willia:ns Tennessea Valley Authority l Tennessee Valley Auth rity Rockville Office 119?1 Rockville Pike  ;

400 West Summit Hill Drive i

W10 R85 Suite 402 l l Knoxville, Tennessee 37002 Rockville, Maryland 20852 i County Judge Hamilton County Courthouse .

Chattanooga Tennessee 37402  !

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Mr. S. A. White .?. October 24, 1938 TVA was informed of this extension on October 21, 1988 in a discussion between S. D. Richardson (NRC) and John LaPoint (TVA).

Sincerely.

Original Signed by James G. Partlow. Director Office of Special Projects cc: See next page DISTRIB!! TION Docket File NRC POR Local POR Projects Reading OSP Readino J. Partlow S. Richardson S. Black B. D. Liaw F. McCoy K. Janison L. Watson D. Crutchfield B. Grires E. Jordan M. Sims JDonohew J. Rutberg T. Barnhart (4)

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