ML20247K312
| ML20247K312 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 09/14/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | Kingsley O TENNESSEE VALLEY AUTHORITY |
| Shared Package | |
| ML20247K319 | List: |
| References | |
| TAC-59141, TAC-59142, NUDOCS 8909210130 | |
| Download: ML20247K312 (3) | |
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- i. Senior Vice President. Nuclear > Power g
2 TennesseetValley Authortty; 16N:38A Lookout Place 1
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[DearfMrLKingsleyr E
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SUBJECT:
- ihNT1CIPATEDlTRANSIENTSWITHOUTSCRAM' EVENTS,10CFR50.621(MPA;A-20)~
p (TAC 59141'AND 59142)'- SEQUDYAH NUCLEAR PLANT, UNITS 1 AND 2 On: July 26,.1984.Lthe Code'of Federal Regulations was ame.nded to includec
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?Section 10 CFR 50,62,." Requirements for Reduction of Risk from Anticipated-
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' Transients 'Without? Scram'(ATWS) Events for Light-Water-cooled Nuclear Power,
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' Plants;": This section provided requirements for an:ATWS mitigation' system for nuclear power plants including Sequoyah Nuclear: Plant.; Units:1 and 2.RYou
'provided information:on 'the_ ATWS mitigation : systems ~ for Sequoyah in submittals cated February 17, 1987,:and August 23'and October 25, 1988.'
We have reviewed your..!submittals. ' We conclude that the ATWS' mitigation system forfeach unit is-acceptable a~nd:is in compliance with the. requirements in
10 CFR 50.62(c)(1) for Westinghouse plants.
Jin the enclosed safety _ evaluation.
The details of our evaluation are
- The staff is presently revjewing ATWS requirements to determine to what extent:
technical' specifications are appropriate. Acco?dingly, this aspect of the staff review remains open pending.the results of this review.. The staff.will
. provide guida'nce regarding the technical specification requirements for the-x T
. ATWS mitigation system for each unit at'a later date.
In ' our lettWdated July 6,1988, you stated the schedule for completing the -
y modifications-for the ATWS mitigation systems is the Cycle 4-refueling outage for each unit. This is the Spring of-1990 for Unit I and the Fall of 1990 for Unit.2. By te:ephosie call on August 21, 1989, it was confimed that the schedule remains the Cycle 4 refueling outage for each unit.
This schedule is the second refueling outage for each unit since July 26,1984 and.1s, therefore, acceptable because it'is~ consistent with the implementation requirements in~
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.You are requested to inform the Comission, in writing, of any significant changes-in the aDove schedule and when the ATWS mitigation system for each
. unit is operational.
You may do this through the periodic updates of the Commission's Safety Information Management System (SIMS) Plant Data Report for Sequoyah.
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Mr. Oliver D.. KingsTey '
I The reporting and/or. recordkeeping requirements contained in this letter 3
- .6ffect fewer than ten respondents; therefore. OMB. clearance-is not required
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under P. L.96-511.
' Sincerely,
' Original signed by Suzanne Black.. Assistant Director-for Projects TVA Projects Division Office of Nuclear Reactor Regulation.
Et. closure:
1 Safety Evaluation ec' w/ enclosure:
See next page Distribution Docket File K.'denison NRC PDR' S. Newberry Local PDR J. Joyce ADSP Reading 1
'L. Tran D. Crutchfield=
.D. Lynch
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- B..D. Liaw S. Black-R.
- Pierson B. Wilson
'L; Watson J. Brady-M. Sims a
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.Mr. Oliver D. Kingsley, Jr.
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L General' Counsel
. Senior Resident Inspector.
Mr. Kenneth M.'Jenison.
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- Tennessee Valley Authority 4 D West Summit HillLDrive Sequoyah Nuclear Plant g
U.S. LNuclear Regulatory Commission-
.ET 118-33H'.
- 2600 Igou. Ferry Road Knoxville,; Tennessee 1 37902 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' Summit Hill' Drive T.E.R.R. A.' Building, 6th Floor 150 9th Avenue North WT 12A 12A Nashville, Tennessee.~37219-5404 Knoxville, Tennessee "37902-Dr., Mark 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'11 censing -
Rockville Office and Regulatory Affairs-
'11921 Rockville Pike Tennessee Valley Authority.
Suite 402 5N 1578 Lookout Place Rockville, Maryland 20852 Chattanooga,. Tennessee.37402-2801
-Mr. John L. Le?oint-Site-D Rector Sequoysh Nuclear Plant Tennessee Valley Authority
~P. 0; ' Box.2000-Soddy Daisy, Tennessee 37379
~Mr. M. Burzynski
> Site Licensing Manager
.Sequoyah Nuclear Plant
.P. 0. 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
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