ML20246L006
| ML20246L006 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/29/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | Kingsley O TENNESSEE VALLEY AUTHORITY |
| References | |
| IEB-89-001, IEB-89-1, TAC-73203, TAC-73204, NUDOCS 8909060201 | |
| Download: ML20246L006 (3) | |
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NUCLEAR REGULATORY COMMISSION wasmNotoN, o c. 20sss
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~ August 29,~1989 uy t
f Decket f.cs. 50-327 ib and 50-328-Mr. 0 liver C. Kingsley, Jr.
Senicr-Vice Fresident. Nuclear Pcwer Tennessee Valley Authority 6N'38A Lookout Place 1101' Market Street Chattanooga, Tennessee 3740E-2801 Cear Mr. Kingsley:.
SUBJECT:
'NRC BULLETIN 85-01, WESTINGHOUSE STEAM GEhERATCR TLEE PECHANICAL y
PLUGS (FPA X9-01) (TAC 73203, 73204) - SE0b0YAH NUCLEAR PLANT, LNITS 1 AhD 2 hThe NRC staff issuec Bulletin 89-01, " Failure of Westinghouse Steam Generator Tube Mechanical Plugs," on May. 15, 1989.
This bulletin requested ~ycu to
' determine whether certain nechanical plugs supplied by Westinghouse are..
. installed-in the..stearr generators at Sequoyah, Units 1 and 2 and, if so, that an l action: plan-be; implemented to ensure that these plugs will continue to provide adequate' assurance cf reactor ccolant system pressure bounda'ry. integrity under ncrmal;cperating, transient, and accident conditions Lt.til these plugs'can be replaced or repaired.
You provicea the response to this bulletin for Sequoyah, Units 1 erc 2 in your letter dated June 12, ~1989. : Of the 126 plugs installed
- in the Unit I steam generators,.100 are from one susceptible heat number-(i.e.,
. heat' number 4523).
You stated that the life expectancy of these 100 plugs will allow-Unit 1 to operate until its upcoming Cycle 4 refueling outage when these plugs 'will be replaced or repaired. For.Sequoyah, Unit 2, none of the steam generators' have plugs' in service with a susceptible heat number.
We have reviewed your response to NRC Bulletin E9-01 fcr Sequoyah and conclude that it is acceptable except for one item: You do not explicitly consnit to L
. refrain from installing any Westinghouse mechanical tute plugs with~the sus-ceptible. heat numbers in the Unit 2 steam generators.
This is Item 2.d of this bulletin.- Because you have made this commitment for the Unit I steam generators, we are assuming that this committment'is implicit for Unit 2.
You are requested to infonn us if this assumption is incorrect within 30 cays of the receipt of this letter.
This closes out our review cf your response to Bulletir 89-01 for Sequoyah,
- 3e' This. review is Multi-plant Action (MPA) X9-01.
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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.
Sincerely.
Original Signed by Suzanne Black,' Assistant Director
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x 3-Mr. Oliver D. Kingsley, Jr..
CC:
General Counsel Mr.' Kenneth M. Jenison
' Tennessee Valley Authority Senior Resident Inspector 400 West Summit Hill Drive Sequoyah Nuclear Plant ET llB 33H U.S. Nuclear Regulatory Commission 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 400 West Sununit Hill Drive T.E.R.R. A. Building, 6th Floor-
'WT 12A 12A 150 9th Avenue North Knoxville, Tennessee 37902 Nashville, Tennessee 37219-5404 Dr. Mars 0. Medford Dr. Henry Myers, Science Advisor Vice President and Nuclear Committee on Interior
-Technical Director and Insular Affairs Tennessee Valley Authority U.S. House of Representatives 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 Suite 402.
SN 157B Lookout Place Rockville, Maryland 20852 Chattanooga, Tennessee 37402-2801 Mr. John L. LaPoint Site Director Sequoyah Nuclear Plant Tennessee Valley Authority P. O. Box 2000 Soddy Daisy, Tennessee 37379 Mr. M. 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, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W.
Atlanta, Georgia 30323 m._.
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