ML20004B820

Forwards Equipment Evaluation Rept by Ofc of Nuclear Reactor Regulation,Equipment Qualification Branch

ML20004B820
Person / Time
Site:	Sequoyah
Issue date:	05/20/1981
From:	Tedesco R Office of Nuclear Reactor Regulation
To:	Parris H TENNESSEE VALLEY AUTHORITY
Shared Package
ML20004B821	List: ML20004B820 ML20004B825
References
NUDOCS 8106010095
Download: ML20004B820 (3)

Text

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UNlTED STATES

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WASMNGTON, D. C. 20555

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May 20, 1981 I

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Mr. H. G. Parris 3

UI Manager of Power u.s. mio nemmen E

Tennessee Valley Authority 500A Chestnut Street Tower II d.

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SUBJECT:

ENVIRONMENTAL QUALIFICATION OF SAFETY-RELATED ELECTRICAL EQUIPMENT RE:

SEQUOYAH, UNITS 1 AND 2 This letter transmits the preliminary results of our review of environmental qualifications of safety-related electrical equipment at your facilities.

This evaluation was based on your submittals received over the past months.

The Sequoyah 1 license was issued with the requirement that all safety-related electrical equipment be qualified to specified requirements not later than June 30, 1982.

In addition, the Commissions Memorandum and Orier of May 23, 1980 (80-CLI-21) noted that a licensee is obligated to modify or replace inadequate equipment promptly.

The staff's review of your submittals for Sequoyah 1 and Sequoyah 2, has

• resulted in our identifying a number of potential equipment deficiencies involving a lack of proper documentation, inadequate justification of assumed environmental conditions following an accident, and/or inadeome environmental testing of equipment, such that conformace to NUREG-0588, s., quired by the Order, cannot be demonstrated. You are reouested to review our identified deficiencies, and their ramifications, and provide us your overall finding regarding continued safe operation of Unit 1 and start up of Unit 2.

l For Sequoyah 1, in order to determine whether your license should be modified or suspended, you are required pursuant to 10 CFR 50.54(f), to provide within 10 days of receipt of this letter, a written statement, signed under oath or affirmation supporting the safe operation of the facility, that takes into account the NRC staff's preliminary list of deficiencies. A negative finding

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on your part concerning the safety of continued operation, for Sequoyah 1, would l

result in a unit shutdown, and should be reported as a Licensee Event Report I

(LER) within twenty-four (24) hours of the determination to the appropriate l

NRC Regional Office.

Include in the LER the actions you have taken for the

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imediate resolution of the matter. A copy of any such LER should be sent to the Director, Division of Licensing, Office of Nuclear Reactor Regulation.

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e Mr. H.G. Parris A similar finding including conformance with GDC 4 for Sequoyah 2 snould be submitted promptly on a schedule to support the licensing of that unit. The purpose of this statement is to provide the NRC with needed assurance, by the licensee, regarding the continue safety of the facility until you can provide an item-by-item reevaluation in a detailed documented manner at a later date.

Please submit a copy of your replies to us via telecopy.

Sincerely,

[h Robert L. Tedesco, Assistant Director for Licensing Division of Licensing

Enclosure:

Evaluation Report for Sequoyah I and 2 cc w/ enclosure:

See next page

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o Mr. H. G. Parris Manager of Power Tennessee Valley Authority

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500A Chestnut Street Tower II Chattanooga, Tennessee 37401 cc: Herbert S. Sanger, Jr., Esq.

General Counsel Tennessee Valley Authority 400 Commerce Avenue E 11B 33 Knoxville, Tennessee 37902 Mr. H. N. Culver Tennessee Valley Authority 400 Commerce Avenue, 249A HBB Knoxville, Tennessee 37902 Mr. Bob Faas Westinghouse Electric Corporation P. O. Box 355 Pittsburgh, Pennsylvar,ia 15230 Mr. Mark Burzynski Tennessee Valley Authority 400 Chestnut Street Tower II Chattanooga, Tennessee 37401 Mr. J. F. Cox Tennessee Valley Authority 400 Commerce Avenue, W10Cl31C Knoxville, Tennessee 37902 Resident Inspector /Sequoyah NPS c/o U.S. Nuclear Regulatory Commission 2600 Igou Ferry Road

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Soddy Daisy, Tennessee 37379 l

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