ML20155F888

Advises That Unit 2 Should Not Reenter Mode 2 Until Util Has Conducted in-depth Review of Performance of Unit & Met W/Senior NRC Mgt to Discuss Findings.Review Should Include Analysis of Entire Series of Reactor Trips

ML20155F888
Person / Time
Site:	Sequoyah
Issue date:	06/09/1988
From:	Ebneter S NRC OFFICE OF SPECIAL PROJECTS
To:	White S TENNESSEE VALLEY AUTHORITY
References
NUDOCS 8806170094
Download: ML20155F888 (3)

Text

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e d putauq'$ UNITED STATES

[" i NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 2 l

%,*****/ June 9,1988 Docket Nos. 50-327/328 Tennessee Valley Authority ATTN: Mr. S. A. White Manager of Nuclear Power 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801 Gentlemen:

The most recent reactor trip of Sequoyah (SQN) Unit 2 which occurred this morning, being one of a series, raises concerns about operations at Sequoyah.

As we discussed this morning, SQN 2 should not re-enter mode 2 until TVA has conducted an in-depth review of the performance of the unit and met with senior management of the Office of Speciai Projects to discuss your findings.

The review sho~uld include an analysis of the entire series of reactor trips with emphasis on post trip review, causal analysis, correcti_ve actions taken, and a determination of why corrective actions have not been effective in preventing subsequent trips.

The time and place of the meeting is contingent on staff availability and TVA readiness to discuss the analysis.

Sincerely, gjgv Ib 4 tewart D. Ebneter Director Office of Special Projects cc: See next page 8806170094 88060937 DR ADOCK 05

'o Mr. S. A. White Tennessee Val'ey Authority Sequoyah Nuclear Plant CC; General Counsel Regional Administrator, Region II Tennessee Valley Authority U.S. Nuclear Regulatory Commission 400 West Summit Hill Drive 101 Marietta Street, N.W.

Eli B33 Atlanta, Georgia 30323 Knoxville, Tennessee 37902 Resident Inspector /Sequoyah NP 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. Richard King Mr. H. L. Abercrombie c/o U.S. GA0 Tennessee Valley Authority 1111 North Shore Drive Sequoyah Nuclear Plant Suite 225, Box 194 P.O. Box 2000 Knoxville, Tennessee 37919 Soddy Daisy, Tennessee 37379 Mr. M. R. Harding 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, Tenressee 37219-5404 Mr. D. L. Williams Dr. Henry Myers, Science Advisar Tennessee Valley Authority Co:miittee on Interior 400 West Sumit Hill Drive and Insular Affairs

• W10 885 U.S. House of Representatives Knoxville, Tennessee 37902 Washington, D.C. 20515 County Judge Hamilton County Courthouse Chattanooga, Tennessee 37402 ,

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