ML19332G097
| ML19332G097 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 12/13/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | Kingsley O Tennessee Valley Authority |
| References | |
| TAC-75050 NUDOCS 8912200162 | |
| Download: ML19332G097 (2) | |
Text
December 13, 1989 Dockef Not 50-328
~ Distribution
=56ERE9W.,. 0GC NRC PDR JHuang Local PDR TMarsh Mr. Oliver D. Kingsley, Jr.
SQN Reading
.BGrimes -
-Senior Vice President, Nuclear Power DCrutchfield EJordan Tennessee Valley Authority BDLiaw JBrady 6N 38A Lookout Place SBlack TQuay 1101 Market Street RPierson
. Chattanooga, Tennessee 37402-2801 LWatson ACRS(10)
Dear Mr. Kingsley:
GPA/CA
SUBJECT:
REQUEST FOR RELIEF FROM THE CODE FOR TWO BIT DISCHARGE VALVES (TAC 75050) - SEQUOYAH NUCLEAR PLANT, UNIT 2 In the letter dated October 4,1989, you requested relief from the require-ments of Section XI of the American Society of Mechanical Engineers (ASME)
Boiler and Pressure Vessel Code (Code).
You requested temporary rel'ief for l
one year, until the Cycle 4 refueling outage for Unit 2 in 1990, from the quarterly stroke test requirements in IWV-3411 of Section XI of the Code.
This relief was for the two parallel safety injection valves located in the Unit 2 discharge line for the boron injection tank-(BIT).
You stated that i
that exercising these valves may result in an increase in the total leakage from the reactor coolant system and a reduction in the boric acid concentration within the BIT.
The dilution of the BIT may require Unit 2 to enter Limiting Condition for Operation 3.5.4.1 on the BIT and possibly start a shutdown of the unit tf the boric acid concentration cannot be kept within the required values.
l You requested an expedited review of this relief request because.the next l
scheduled stroke test was October 27, 1989, twenty-three days from the date of l
your request.-
The staff and its contractor, Oak Ridge National Laboratory, reviewed your request and held telephone conference calls with your staff on October 10, 1
12 and 13, 1989. During the conference calls, we explained that we could not support the relief request to forego testing the valves for one year and discussed several testing alternatives and design details.
On October 13, 1989, your staff withdrew this request for relief for the BIT i
discharge valves. This closes out the staff's review of this request for relief from the Code.
Sincerely, Original signed by Gerald E. Gears for Suzanne C. Black, Assistant Director for Projects TVA Projects Division Office of Nuclear Reactor Regulation oro/
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, cc w/ enclosure:
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 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 c.aclear 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. Joseph Bynum Acting Site Director Sequoyah Nuclear Plant Tennessee Valley Authority P. O. Box 2000
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Soddy Daisy, Tennessee 37379 Mr. Mark J. 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
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