ML20214V575

Recommends Early Meeting to Discuss Verification of safety-related Sys Prior to Plant Restart & Activities Associated W/Missing Util Civil Engineering Calculations

ML20214V575
Person / Time
Site:	Sequoyah
Issue date:	06/02/1987
From:	James Keppler NRC OFFICE OF SPECIAL PROJECTS
To:	White S TENNESSEE VALLEY AUTHORITY
References
NUDOCS 8706120159
Download: ML20214V575 (5)

Text

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Docket Nos. 50-327/328 1

Mr. S. A. White Manager of Nuclear Power

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Tennessee Valley Authority 6N 38A Lookout Place 1101 Market Street j

Chattanooga, Tennessee 37402-2801

SUBJECT:

TENNESSEE VALLEY AUTHORITY (TVA) PROGRAMMATIC REVIEWS FOR RESTART OF SEQUOYAH UNIT 2 The staff has reviewed your presentation given during the meeting of May 21, 1987, and is reviewing Volume II of the TVA Nuclear Performance Plan on the programmatic efforts that you have undertaken to support the restart of Sequoyah Unit 2.

As stated in the meeting, I recognize that you have made extensive efforts to address the concerns raised by the staff's 50.54(f) letter and by your special employees concern program. However, as we have discussed before, your engineering and design review efforts to date have concentrated on separate programs looking horizontally across the safety systems at Sequoyah and focusing on the specific concerns raised. Your efforts have not included a vertical review through one or more safety systems that would include significant aspects of the interactions and interfaces throughout design, engineering, and construction.

We believe an independent design / construction verification of at least one safety-related system should be undertaken to provide additional assurance that all major design and construction problems have been identified and resolved prior to Sequoyah Unit 2 restart. This verification effort should focus on areas not directly covered by TVA's other efforts and should minimize redoing work already performed by TVA. While it is recognized that any such effort is bound to identify some problems, we would expect this vertical review to provide added confidence that no major problems have been overlooked.

If that proves to be the case, currently identified problems are resolved satisfactorily, and no new safety problems arise in the interim, we would expect to be in a position to recommend restart of Sequoyah Unit 2.

I I recommend that an early meeting be scheduled to discuss how this verification effort should be conducted.

In this meeting, I also want to 8706120159 870602 PDR ADOCK 05000327 P

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JM -2Igy Mr. S. A. White discuss your activities associated with the missing TVA civil engineering calculations as well as your selection of the present sample size in that area.

Sincerely, bM L

,fJamesG.Keppler, Director Office of Special Projects cc: See next page

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i Mr. S. A. White l

Tennessee Valley Authority Sequoyah Nuclear Plant 1

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General Counsel Regional Administrator, Region II Tennessee Valley Authority U.S. Nuclear Regulatory Comission 400 West Summit Hill Drive 101 Marietta Street, N.W.

E11 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 '

1 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 i

Soddy Daisy, Tennessee 37379 i

Tennessee Department of i

Mr. M. R. Harding Public Health i

Tennessee Valley Authority ATTN: Director, Bureau of Sequoyah Nuclear Plant Environmental Health Services P.O. Box 2000 Cordell Hull Building Soddy Daisy, Tennessee 37379 Nashville, Tennessee 37219 j, '

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Mr. D.L. Williams Mr. Michael H. Mobley, Director Tennessee Valley Authority Division of Radiological Health 400 West Summit Hill Drive T.E.R.R.A. Building i

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DISTRIBUTION Docket File JZwolinski NRC PDR BHay'es Local PDR GZech CJamerson BDLias JAxelrad' TRotella SEbneter SQN File SRichardson EShomaker JDonohew EJordan Projects Rdg SRConnelly i 9 OGC-BETH JPartlow ACRS(10)

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