ML20055F797

Advises That 900126 Response to Generic Ltr 89-13 Re Svc Water Sys Problems Affecting safety-related Equipment, Acceptable.Documentation Re Implementation of Generic Ltr & Results of Programs Should Be Retained in Plant Records

ML20055F797
Person / Time
Site:	Sequoyah
Issue date:	07/16/1990
From:	Hebdon F Office of Nuclear Reactor Regulation
To:	Kingsley O Tennessee Valley Authority
References
GL-89-013, TAC-74061, TAC-74062 NUDOCS 9007190205
Download: ML20055F797 (3)

Text

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..s'o se  : *t , ^g UNITE 0 STATES

! NUCLEAR REGULATORY COMMISSION W ASHINGTON,0. C. 2066L d -

July 16, 1990

%q Docket Nos. 50-327 and 50-328 L

4 Mr. Oliver D. Kingsley, Jr.

Senior Vice President, Nuclear Power Tennessee Valley Authority 6N 38A Lookout Place 1101 Market Street Chattanooga, Tennessee 37402-2801

SUBJECT:

GENERIC LETTER 89-13 ON SERVICE WATER SYSTEM PROBLEMS AFFECT 1HG SAFETY-RELATEDEQUIPMENT(MPAL9-13)(TACNOS. 74061/74062) -

SEQUOYAH HUCLEAR PLANT, UNITS 1 AND 2 NRC Generic Letter (GL) 89-13, " Service Water System Problems Affecting Safety-Related Equipment," dated July 18, 1989, requested you to advise us of whether you have established programs at Sequoyah to implement Reconsendations I to IV of the GL or whether you are pursuing an equally effective alternative course of action. In your response dated January 26, 1990, you connitted to programs to iniplement the recomendationt of the GL and provided a description of the programs. You stated that the site is already performing the reconsendations or will implement the reconnended programs for Unit 1 in the Unit 1 Cycle 5 refueling outage and for Unit 2 in the Unit 2 Cycle 4 refueling outage (i.e., presently in late 1991 for Unit 1 and in late 1990 for Unit 2).

Theprogramsremainingtobeimplementedare(1)toperformperiodic inspections of the intake structure of the essential raw coolin (ERCW)

- system for biological fouling, sediment, and corrosion, and (2)g water to periodically verify the heat transfer capability of the safety-related heat exchangers in

the open-cycle ERCW system. We have been informed by your staff by telephene that the training programs for the control rocai operators and the shift technical advisors have been revised to include information on biofouling in service water systems and its affects on safety-related equipment.

We have reviewed your response against the requirerents in the GL. We under-stand that your failure to provide a response to Recomendation I-D is because Asiatic clams have been detected in the plant intake water. We conclude that cyour response to the GL is acceptable and fulfills the requirements in the CL. The schedule to iirpleraent the remaining programs at Units 1 and 2 is within the requirements in the GL because you have coimitted to implenient the

-procrems by the unit startup following the first refueling outage beginnino 9 Lunths or more af ter the c' ate of issuarce of the OL. Although we are accepting your response on not performing periodic tests of the heat transfer capability of the safety-related heat exchargers in the cicsed-cycle ccn.ponent cooling water (CCW) system, you should censider the staff's responses concerning such testing in Section 111.F of the supplement dated April 4, 1990 003bbOk OON>k7 FDv P ,

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Mr. Oliver D. Kingsley, Jr. 2 to the GL. The need for testing of closed-cycle system heat exchangers has not been considered necessary because of the assumed high quality of existing chemistry control programs for these closed. cycle systems. If the adequacy of these chemistry control progrems cannot be confirmed over the total operating history of the plant or if during the conduct of the total testing program any unexplained downward trend in heat exchanger performance is identified that cannot be remedied by maintenance of the open. cycle ERCW system, you should consider selectively extending the test program and the routine inspection and maintemce program addressed in Recommendation III of the GL to the CCW system.

This closes out our review of your response to GL 89-13 and the licensing activities associated with TAC Nos. 74061 for Unit I and 74062 for Unit 2. As requested in the GL, you should inform us that all of the recommendations in the GL have been implemented within 30 days of such implementation. This  ;

should be after the two programs listed above are implemented in the Unit 1 i Cycle 5 refueling outage and th3 Unit 2 Cycle 4 refueling outage. As stated in the GL, the documentation associated with the implementation of the GL and the results of your programs should be retained in the appropriate plant records.

S erely, 1 M rederick J. Hebdohl, Director jProject Directorate 11 4 l Division of Reactor Projects . 1/11 Office of Nuclear Reactor Regulation cc:' See next page Distribution Docket File SQN Reading Files NRC PDR A. Chu Local PDR C. Hodges S. Varga GPA/CA l G. Lainas L. Reyes, Region 11 F. Hebdon S. Black

-B. Wilson L. Watson, Region II J. Brady, Region II M. Krebs JDonohew OGC E. J W an ACRS(10) n .

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OFFICIAL RECORD COPY (U

.Domiinent Name: GL 89-13 -SERVICE WATER SYSTEM f

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Nr. Oliver D. Kingsley, Jr. l l

1 cC' Mr. Marvin Runyon, Chairs.an Mr. Joseph Bynum, Acting Site Director Tennessee Valley Authority Sequoyah Nuclear Plant ET 12A 7A 1. Tennessee Valley Authority j 400 West Sumit Hill Drive 6 P. O. Box 2000 i Knoxville, Tennessee 37902 Soddy Daisy, Tennessee 37379  ;

Director Mr. Mark J. Burzynski  !

Tennessee Valley Authority Site Licensing Manager ET 12A 11A Sequoyah Nuclear Plant 400 West Sumit Hill Drive P. O. Box 2000 i l

Knoxville, Tennessee 37902 Soddy Daisy, Tennessee 37379 Mr. John B. Waters, Director County Judge Tenressee Valley Authority Hamilton County Courthouse l ET 12A SA Chattanooga, Tennessee 37402 '

400 West Sumit Hill Drive Knoxville, Tennessee. 37902 Regional Acministrator, Region II U.S. Nuclear Reculatory Comission i Mr. W. F. Willis 101 Marietta Street, N.W. )

Chief Operating Officer Atlanta, Georgia 30323  !

l ET 12B 16B 400 West Sumit Hill Drive Mr. Paul E. Harmon l Knoxville, Tennessee 37902 Senior Resident Inspector Sequoyah Nuclear Plant General Counsel U.S. Nuclear Regulatory Comission Tennessee Valley Authority 2600 Igou Ferry Road 400 West Sumit Hill Drive Soddy Daisy, Tennessee 37379 ET llB 33H Kncxv111e, Tennessee 37902 Mr. Michael H. Mobley, Director Division of Radiological Health 1

, Mr. Dwigot Nunn T.E.R.R.A. Building, 6th Floor l Vice President, Nuclear Engineering 150 9th Avenue North Tennessee Valley Authority Nashville, Tennessee 37219-5404 6N 3PA Lookout Place 1101 Market Street Tennessee Valley Authority Chattanooga, Tennessee 37402-2801 Rockville Office 11921 Rockville Pike Dr. Mark 0. Medford Suite 402 i- Vice President and Nuclear Rockville, Faryland 20852 Technical Director Tennessee Valley Authority 6N 38A Lookout Place-Chattanooga, Tennessee 37401-2801 Mr. Edward C. Wallace

!- Manager, Huchar Licensing l

and Regulatory Affairs l

Tennessee Valley Authority SN 157B Lookout Place Chattanooga, Tennessee 37. <-601 L

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