ML20138D241

Forwards Safety Evaluation Authorizing Proposed Alternative to Use 1989 Edition of American Society of Mechanical Engineers Boiler & Pressure Vessel Code for Performance of Containment Repair & Replacement Activities Until 970909

ML20138D241
Person / Time
Site:	Sequoyah
Issue date:	04/28/1997
From:	Hebdon F NRC (Affiliation Not Assigned)
To:	Kingsley O TENNESSEE VALLEY AUTHORITY
Shared Package
ML20138D245	List: ML20138D241 ML20138D258
References
TAC-M97927, TAC-M97928, NUDOCS 9705010072
Download: ML20138D241 (4)

Text

1. "iro g- sg UNITED STATES N NUCLEAR REGULATORY COMMISSION

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,/j WASHINGTON, D.C. 30086 0001 April 28,1997 Mr. Oliver D. Kingsley, Jr.

President, TVA Nuclear and Chief Nuclear Officer Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801

SUBJECT:

SEQUOYAH NUCLEAR STATION, UNITS 1 AND 2 - ASME SECTION XI RELIEF REQUEST - SUBSECTION IWE (TAC NOS. M97927 AND M97928)

Dear Mr. Kingsley:

The purpose of this letter is to authorize your proposed alternative to use the 1989 Edition of American Society of Mechanical Engineers Boiler and Pressiere Vessel Code (ASME Code),Section XI, Subsection IWE, for the performance of containment repair and replacement activities until September 9,1997 in lieu of the usage of the 1992 Edition of the ASME Code,Section XI, Subsection IWE, as recently endorsed by 10 CFR 50.55a.

In a letter dated February 10, 1997, you proposed the above described alternative and requested relief from the requirements of the 1992 Edition of the ASME Code,Section XI, Subsection IWE, as endorsed by recent changes made effective to 10 CFR 50.55a on September 9, 1996. Prior to the effective date of the revisions to 10 CFR 50.55a, TVA has been performing containment repair and replacement activities in accordance with the 1989 Edition of ASME Code,Section XI, Subsection IWE, and wishes to continue using the 1989 Edition of the code until September.9, 1997.

The staff has reviewed the information provided in your February 10, 1997, letter. Our evaluation and conclusions are contained in the enclosed Safety Evaluation. The staff agrees that the immediate implementation of the requirements of the 1992 Edition of the ASME Code for repair and replacement activities, as required by 10 CFR 50.55a, will result in hardship without a compensating increase in the level of qual. y and safety. Use of the 1989 /

Edition of the ASME Code and the associated quality assurance requirements, /

as supplemented by the site specific quality assurance program described in your letter of February 10, 1997, provides adequate assurance of containment /

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Mr. O. Kingsley, Jr. integrity for the period requested. Accordingly, TVA's relief request for delayed implementation of 10 CFR 50.55a is authorized, pursuant to 10 CFR 50.55a(a)(3)(ii), until September 9, 1997.

Sincerely, Original signed by Frederick J. Hebdon, Director Project Directorate 11-3 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328

Enclosure:

Safety Evaluation cc w/ enclosure: See next page DISTRIBUTION Docket File PUBLIC SVarga 0GC PDII-3 Rf GHill (2)

MLesser, RII JJohnson, RII ACRS GTracy THarris [TLH3, SE] ,

TCerovski '

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Document Name: G:\ SON \97927.BR

• See previous concurrence i Ta roielve a copy of this document, Indicate in the Son: *C" = Copy without attachment / enclosure "E" = Copy with attachment / enclosure *N" = No copy 0FFICE PM:PD23:DRPA , E t.A:PD23:DRPE l OGC l D:\PD23:DRPE l C. l NAME RHernan # BClayton* MYoung* FHebdon DATE 04/28/97 I 03/18/97 04/24/97 04/')9/97 1 0FFICIAL RECORD COPY l

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Mr. O. Kingsley, Jr. I integrity for the period requested. Accordingly, TVA's relief request for  !

delayed implementation of 10 CFR 50.55a is authorized, pursuant to 10 CFR 50.55a(a)(3)(ii), until September 9, 1997.

Sincerely, Frederick J. Hebc on, Director Project Directorate II-3 Division of Reactor Projects - I/II l Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328

Enclosure:

Safety Evaluation cc w/ enclosure: See next page  ;

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l Mr. Oliver D. Kingsley, Jr. SEQUOYAH NUCLEAR PLANT '

. Tennessee Valley Authority cc:

Mr. O. J. Zeringue, Sr. Vice President Mr. J. T. Herron, Plant Manager Nuclear Operations Sequoyah Nuclear Plant l Tennessee Valley Authority Tennessee Valley Authority

! 6A Lookout Place P.O. Box 2000 1101 Market Street Soddy Daisy, TN 37379 Chattanooga, TN 37402-2801 Regional Administrator l Mr. Jack A. Bailey, Vice President U.S. Nuclear Regulatory Commission l Engineering & Technical Services Region II l Tennessee Valley Authority 101 Marietta Street, NW., Suite 2900 l

6A Lookout Place Atlanta, GA 30323 1101 Market Street Chattanooga, TN 37402-2801 Mr. Melvin C. Shannon Senior Resident Inspector Mr. R. J. Adney, Site Vice President Sequoyah Nuclear Plant l

Sequoyah Nuclear Plant U.S. Nuclear Regulatory Commission Tennessee Valley Authority 2600 Igou Ferry Road P.O. Box 2000 Soddy Daisy, TN 37379 Soddy Daisy, TN 37379 Mr. Michael H. Mobley, Director l General Counsel Division of Radiological Health Tennessee Valley Authority 3rd Floor, L and C Annex ,

l ET 10H 401 Church Street i 400 West Summit Hill Drive Nashville, TN 37243-1532 Knoxville, TN 37902 County Executive l Mr. Raul R. Baron, General Manager Hamilton County Courthouse 1

Nuclear Assurance and Licensing Chattanooga, TN 37402-2801 l l Tennessee Valley Authority 4J Blue Ridge 1101 Market Street i

Chattanooga, TN 37402-2801 l Mr. Pedro Salas, Manager l

Licensing and Industry Affairs Tennessee Valley Authority 4J Blue Ridge 1101 Market Street Chattanooga, TN 37402-2801 Mr. Ralph H. Shell, Manager l

Licensing and Industry Affairs l Sequoyah Nuclear Plant l Tennessee Valley Authority l

P.O. Box 2000 Soddy Daisy, TN 37379 i

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