ML20248E229

Requests Addl Info Re Implementation of Suppl 3 of NRC Bulletin 88-008, Thermal Stresses in Piping Connected to RCS, within 30 Days of Ltr Receipt

ML20248E229
Person / Time
Site:	Sequoyah
Issue date:	09/28/1989
From:	Black S Office of Nuclear Reactor Regulation
To:	Kingsley O TENNESSEE VALLEY AUTHORITY
References
IEB-88-008, IEB-88-8, TAC-R00445, TAC-R00446, TAC-R445, TAC-R446, NUDOCS 8910050110
Download: ML20248E229 (3)

Text

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UNITED STATES

- o 3 E NUCLEAR REGULATORY COMMISSION

- WASHINGTON, D. C. 20585 t l

..... September 28, 1989 Docket Nos. 50-327 and 50-328 l

Mr. Oliver D. Kingsley, Jr. I Senior Vice President, Nuclear Power Tennessee Valley Authority 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801 i

SUBJECT:

REQUEST FOR INFORMATION, NRC BULLETIN 88-08, SUPPLEMENT 3, (TAC NOS. R00445/R00446) - SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 i

Supplement 3 of NRC_ Bulletin 88-08, "Themal Stresses in Piping Connected to Reactor Coolant Systems " was issued on April 11, 1989. The purpose of this supplement is to (1) provide infomation to addressees about an event at a foreign reactor relating to themal stratification of unisolable piping con-nected to the reactor coolant system (RCS) similar to the December 9, 1987 Farley 2 event. (2) emphasize to the addressees the need for sufficient review of their RCSs to identify any connected, unisolable piping that could be subjected to unacceptable thermal stratification, and (3) again emphasize the importance of addressees taking action, where such piping is identified, to ensure that the piping will not be subjected to unacceptable themal stresses.

This supplement identified that periodic valve seat leakage through packing glands could also result in unacceptable thermal stresses in piping.

It was stated in Supplement 3 that the requirements in NRC Bulletin 88-08 remain unchanged. Therefore, for operating plants as Sequoyah not in extended outages, Action 1 of the Bulletin should be completed for periodic valve leakage through the packing gland identified in Supplement 3 within 60 days of receipt of the Supplement. Actions 2 and 3 of the Bulletin, if required, should be completed before the end of the next refueling outage for each Sequoyah unit. Within 30 days of completion of Action 1 for Supplement 3, a letter confirsing that the action has been completed and describing the results of the review should be submitted to the NRC staff. If this review indicates a potential problem exists, this letter should include a schedule for complet-ing Actions 2 and 3.

L We have not received a rfsponse concerning the implementation of Supplement 3 i

of NRC Bulletin 88-08. at Sequoyah. You are requested to submit the status of the work done to implement Supplement 3 at Sequoyah within 30 days of receipt of this letter. Your submittal should include a schedule of when you will be submitting the information discussed above, which the staff needs to close out NRC Bulletin 88-08.

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Mr. Oliver D. Kingsley -2 The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P. L.96-511. i Sincerely.

Original signed by Suzanne Black, Assistant Director for Projects TVA Projects Division Office of Nuclear Reactor Regulation

Enclosure:

Request for Information cc w/ enclosure:

See next page Distribution Docket File NRC PDR Local PDR SQN Reading ADSP Reading D. Crutchfield B. D. Liaw S. Black R. Pierson B. Wilson L. Watson J. Brady J. Donohew S. Lee C. Y. Cheng OGC B. Grimes E. Jordan ACRS (10)

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...._:__ __:_______ .....:..... .._:..._______ .:____________:.__________:_ . ____... 1' NAME :JDo :as:Sleejd7 SBlac  :  :  :  :

DATE..! /(. MB9  : i /27/89  : 9/4r/89  :  :  :  :

OFFICIALREC0ADCOPY l

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. .Te'hnesseeValbyAuthority cc w/ enclosure:

Gereral Counsel Mr. Kenneth M. Jenison Taranessee Valley Authority Senior Resident Inspector 400 West Summit Hill Drive Sequoyah Nuclear Plant ET 118 33H U.S. Nuclear Regulatory Comission Knoxville, Tennessee 37902 2600 Igou Ferry Road Soddy Daisy, Tennessee 37379 Mr., F. L. Moreadith Vice President Nuclear Engineering Mr. Michael H. Mobley, Director Tennessee Valley Authority Division of Radiological Health 4C0 West Summit Hill Drive T.E.R.R.A. Building, 6th Floor W7 12A 12A 150 9th Avenue North Knoxville, Tennessee 37902 Nashville, Tennessee 37219-5404 l

Dr. Mark 0. Medford Dr. Henry Myers, Science Advisor Vice President and Nuclear Comittee on Interior Technical Director and Insular Affairs l Tennessee Valley Authority U.S. House of Representatives 1

6N 38A Lookout Place Washington, D.C. 20515  ;

Chattanooga, Tennessee 37402-2801 Tennessee Valley Authority Manager, Nuclear Licensing Rockville Office and Regulatory Affairs 11921 Rockville Pike Tennessee Valley Authority j Suite 402 3 SN 157B Lookout Place Rockville, Maryland 20852 l Chattanooga, Tennessee 37402-2801

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Mr. John T. LaPoint i l

Site Director l Sequoyah Nuclear Plant f i

Tennessee Valley Authority P. O. Box 2000 Soddy Daisy, Tennessee 37379 Mr. Mark J. Burzynski '

Site Licensing Manager Sequoyah Nuclear Plant P. O. Box 2000 Soddy Daisy, Tennessee 37379 County Judge Hamilton County Courthouse Chattanooga, Tennessee 37402 Regional Administrator, Regi_on II U.S. Nuclear Regulatory Commissfon 101 Marietta Street, N.W.

Atlanta, Georgia 30323

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