ML19332F167
| ML19332F167 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 12/08/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | Kingsley O Tennessee Valley Authority |
| Shared Package | |
| ML19332F168 | List: |
| References | |
| TAC-73749, TAC-73750 NUDOCS 8912130487 | |
| Download: ML19332F167 (3) | |
Text
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. UNITED STATES NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D, C. 20696 q.
December 8, 1989 e
Docket Nos. 50-327 -
i,.
and 50-328-Mr. Oliver D. Kingsley, Jr.
4
- Senior Vice President, Nuclear Power
~ Tennessee Valley Authority 1
- 6N 38A. Lookout Place s
- 1101 Market. Street.
k
~ Chattanooga, Tennessee 37402-2801
.l
Dear Mr. Kingsley:
4
SUBJECT:
. CHICKAMAUGA RESERVOIR SE0! MENT DEPOSITION AND EROSION (TAC 73749/
[
y' 73750) - SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 In the-staff's letter dated August 15, 1988, we.. requested that you provide the following information concerning the sedimentation.and erosion calculations for the essential raw cooling water (ERCW) intake. structure:' (1) the Chickamauga
- Reservoir cross sections used for the unstead
. cross sections through the reservoir, and'(3)y flow analysis, (2) the geologic the sediment scour and deposition H
calculations; This information except for the geologic cross sections'through l
~ the, reservoir was provided:in your letter dated May 18. 1989.
~
' Basedion the' enclosed safety evaluation, the staff concludes that the calcula-
- tions performed' by the Tennessee Valley Authority- (TVA) on the sediment deposition and' erosion' at the ERCW intake structure following the failure of the Chicka-
' mauga: Dam are conservative and acceptable. The staff concludes that there is assurance this sediment deposition and erosion will not prevent the -structure from perfoming its safety fanction and the data on the geologic cross sections ll through the reservoir are not needed.
E L
This closes out the staff's review of this issue. There is_no implementation required lby you.on this issue.
Although the staff concludes that there are no safety concerns about silt
_ blockage'of the ERCW intake structure, it recommends that TVA review DFoi i
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- Mr. Oliver D. Kingsley- '
the Sequoyah emergency operating instruction for the Chickamauga Dam failure
.about the potential of silt blockage of the intake structure when no ERCW
. pumps _may be operating.
i
- i Sincerely, f
t SuzanneC.Blad,AssistantDirector for Projects t
TVA Projects Division Office of Nuclear Reactor Regulation
Enclosure:
Safety Evaluation cc1w/ enclosure:
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OFFICIAL RECORD COPY l
LDocument Name:- 73749
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-- k Mr. Oliver D. Kingsley, Jr..-
cc w/ enclosure:
General Counsel Mr. Kenneth-M. Jenison
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Tennessee Valley Authority Senior Resident Inspector L'
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 Summit 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. Mark-0. Medford Dr. Henry Myers, Science Advisor Vice President and' Nuclear Committee on Interior Technical Director end 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 1
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 T. LaPoint Site Director J
Sequoyah Nuclear Plant Tennessee Valley Authority P. O. Box 2000 Soddy Daisy, Tennessee 37379 l
Mr. Mark J. Burzynski Site Licensing Manager Sequoyah Nuclear Plant P. O. Box 2000 Soddy Daisy, Tennessee 37379 i
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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