ML20244C397
| ML20244C397 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 06/07/1989 |
| From: | Black S Office of Nuclear Reactor Regulation |
| To: | Kingsley O TENNESSEE VALLEY AUTHORITY |
| References | |
| GL-88-11, TAC-71548, TAC-71549, NUDOCS 8906140266 | |
| Download: ML20244C397 (2) | |
Text
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June 7, 1989 Docket Nos. 50-327, Distribution E ocket File KJenison SQN Rdg. File and 50-328 D
NRC PDR OGC Local PDR JDonohew Projects Reading GPA/CA Mr. Oliver D. Kingsley, Jr.
ADSP Reading ACRS(10)
Senior Vice President, Nuclear Power DCrutchfield BGrimes Tennessee Valley Authority BDLiaw EJordan 6N 38A Lookout Place SBlack LWatson 1101 Market Street RPierson MSims Chattanooga, Tennessee 37402-2801 TQuay CYCheng JBrady BElliott
Dear Mr. Kingsley:
SUBJECT:
RADIATION EMBRITTLEMENT OF REACTOR VESSEL MATERIALS (GENERIC LETTER 88-11) (TAC 71548/71549) - SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 On July 12, 1988, the NRC issued Generic Letter (GL) 88-11 "NRC Position on Radiation Embrittlement of Reactor Vessel Materials and Its Impact on Plant Operations." The GL called attention to Revision 2 of the Regulatory Guide 1.99, " Radiation Embrittlement of Reactor Vessel Materials." Licensees were directed to use the methods described in Revision 2 to predict the effect of neutron radiation on reactor vessel materials as required by Paragraph V.A of Appendix G to 10 CFR Part 50, unless they can justify the use of different methods.
In addition, licensees were requested to respond within 180 days of receipt of the GL with the results of a technical analysis of the impact of Revision 2 on their facility and whatever actions they propose to take.
By letter dated December 9. 1988, you responded to GL 88-11 for Sequoyah, Units 1 and 2.
Your response provided the results of your analysis of the impact of implementing Revision 2 to Regulatory Guide 1.99 and described the actions you will take in order to comply with Revision 2 including the commitment to submit a Technical Specification change request by March 1,1991.
You stated that the present pressure-temperature curves for Sequoyah are bounding for about five effective full power years for both units but it is not anticipated that the low temperature overpressurization setpoints or the enable temperatures will result in an operational problem for the current licenses of the units. The staff considers this commitment satisfactory and, therefore, your requirements for responding to GL 88-11 are fulfilled. This closes out the staff's review of this generic letter.
Sincerely, Original signed by Suzanne Black, Assistant Director N b O$bk $$$h0327 TV roj c ivision P
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General Counsel' Mr. Kenneth M. Jenison Tennessee Valley Authority Senior Resident Inspector
- 400 West Summit Hill Drive Sequoyah Nuclear Plant Eli B33 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 W12 A12 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 and Insular Affairs Tennessee Valley Authority U.S. House of Representatives SN 157B Lookout Place Washington, D.C.
20515 Chattanooga, Tennessee 37402-2801 Tennessee Valley Authority 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 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta Street, N.W.
Atlanta, Georgia 30323