ML20247L028
| ML20247L028 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 05/26/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | Kingsley O TENNESSEE VALLEY AUTHORITY |
| References | |
| IEB-88-003, IEB-88-3, TAC-R00388, TAC-R00389, TAC-R388, TAC-R389, NUDOCS 8906020071 | |
| Download: ML20247L028 (3) | |
Text
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%j-J UNITED STATES NUCLEAR REGULATORY COMMISSION 1
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,' a wAsHWGTON, D. C. 20688 1
May 26, 1989
[DocketNos.150-32f?
and 50-328'
-1 4
l Mr. Oliver D. Kingsley,' Jr.
'l Senior Vice President, Nuclear Power Tennessee Val 1ey Authority 6N 38A Lookout Place 1101 Market Street Chattanooga. Tennessee 37402-2801
Dear Mr. Kingsley:
SUBJECT:
. HFA TYPE LATCHING RELAYS (BULLETIN 88-03, MPA X8-03) (TAC R00388/
R00389) - SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 The staff issued NRC Bulletin 88-03, " Inadequate Latch Engagement in HFA Type.
Latching Relays Manufactured by General Electric-(GE) Company " on March 10,;
1988. The purpose of the bulletin was to request that licensees perform an "
inspection to ensure all GE HFA type latching relays in Class 1E applications have adequate latch engagement and replace'or repair those that do not. The Bulletin requested licensees to (1) measure the distance between the top of
,the molded contact carrier and the top of the relay armature; (2) inspect the latch with the armature fully depressed against the pole piece; (3) repair or
- replace any relay that fails the above inspections; and (4) inspect all existing spare relays. - Future spares received are to be inspected prior to their installation if manufactured prior to November 1,1987.
The Tennessee Valley Authority (TVA) responded to the bulletin for Sequoyah, Units 1 and 2, in its letters dated July 6, September 28 and November 17, 1988-and' April 11, 1989. TVA stated that, for each unit, 26 relays were
. identified and inspected.
These relays are in the 6,900-volt shutdown boards 1A-A and IB-B (Unit 1), and 2A-A and 28-B (Unit 2).
None were found to have an' inadequate latch engagement; therefore, no repairs or replacements were required. These relays are GE Model 12HFA54E187H and are the non-century service type.
TVA also stated that 12 spare relays have been received on site and connitted to inspect them before their installation to verify the date code as specified in the bulletin. These inspections were conducted for each unit in accordance with the schedule in the bulletin.
The staff has reviewed your responses and concludes that the requirements in Bulletin 88-03 have been properly addressed for Sequoyah.
Records of the h1 0906020071 890526 1
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l Mr. Oliver D..Kingsley','Jr. inspections shh11 be documented and maintained in accordance with plant procedures for Class IE equipment. These records:may be the subject of a future inspection. This closes out the staff's review of this bulletin on Sequoyah.
Sincerely-Original signed by Rajender Auluck for Suzanne Black, Assistant Director for Projects TVA Projects Division l
Office of Nuclear Reactor Regulation j
i cc: See next page i
Distribution viiDeCRet#1 Nth NRC PDR Local PDR Projects Reading ADSP Reading D. Crutchfield B. D. Liaw S. Black-T. Quay R. Pierson B. Wilson L. Watson J. Brady.
M. Simms l
J. Donohew A. Marinos OGC B. Grimes E. Jordan ACRS (10)
GPA/CA SQN Rdg. File C. Shiraki cc:
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2 cc:
W General Counself Mr. Kenneth M. Jenison Tennessee Valley Authority Senior Resident Inspector 400. West Summit Hill Drive Sequoyah Nuclear Plant E11 B33 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 TennesseeLValley Authority Division of Radiological Health 400 West Summit Hill Drive T.E.R.R.A. Building, 6th Floor W12 A12 150 9th Avenue North E
Knoxville, Tennessee 37902 Nashville, Tennessee' 37219-5404-Dr. Henry Myers. Science Advisor-4
~
Vice President and Nuclear Committee on Interior Technical Director and Insular Affairs Tennessee Valley. Authority U.S. House of Representatives ~
SN 157B Lookout Place Washington, D.C.
20515 A
l Chattanooga, Tennessee 37402-2801 l
1 Tennessee Valley Authority i
Mr. M..J. Ray, Acting Director Rockville Office Nuclear Safety and Licensing 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 Acting Site Licensing Manager Sequoyah Nuclear Plant P. O. Box 2000 Soddy Daisy Tennessee 37379 County Judge Hamilton County Courthouse Chattanooga, Tennessee 37402 l
Regional Administrator, Region II U.S. Nuclear Regulatory Commission i
101'Marietta Street, N.W.
Atlanta, Georgia 30323 l
1 L -'
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