ML20137V086
| ML20137V086 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/12/1986 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | Youngblood B Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8602190422 | |
| Download: ML20137V086 (2) | |
Text
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A TENNESSEE VALLEY AUTHORITY CHATTANOOGA TENNESSEE 37401 SN 157B Lookout Place February 12, 1986 Director of Nuclear Reactor Regulation Attention:
Mr. B. Youngblood, Project Director PWR Project Directorate No. 4 Division of Pressurized Water Reactors (PWR)
Licensing A U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Dear Mr. Youngblood:
In the Matter of
)
Docket Nos. 50-327 Tennessee Valley Authority
)
50-328 By the August 5_and 13, 1985 letters from J. A. Domer to E. Adensam, we requested NRC approval to utilize ASME Code Cases N-397 and N-411.. The December 2, 1985 letter from H. R. Denton to H. G. Parris approved the use of Code Case N-397, and requested specific comitments before NRC could approve the use of Code Case N-411.
Therefore, the following commitments are being provided in support of our request to use ASME Code Case N-411:
1.
TVA will use the code case for piping systems analyzed by response spectrum methods and not those using time-history analysis methods.
2.
When the alternate damping criteria-of this code case are used, they will be used in their entirety in a given analysis and shall not be a mixture of Regulatory Guide 1.61 criteria and the alternated criteria of this code case.
Based on a telephone discussion with Carl Stahle of your staff, we understand that the December 2, 1985 letter was to provide conditional approval of the use of Code Case N-411 upon submittal of the requested comitments. Also, since we did not take exception to the requested comitments, we were permitted to utilize Code Case N-411.
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B602190422Og2 PDR ADOCK O 32'1 i
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An Equal Opportunity Employer
FJ
. Director of Nuclear Reactor Regulation February 12, 9816 If you have any questions regarding this subject, please get in touch with Jerry Wills at FTS 858-2683.
Very truly yours, TENNESSEE LLEY AUTHORITY R.
ri ley Manager of icensing o ap subscribed befpre me Sworn this
- day of E/k.
1986 Notary Public
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My Comission Expires cc:
U.S. Nuclear Regulatory Commission
. Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Mr. Carl Stahle Sequoyah Project Mans *,er U.S. Nuclear Regulato y. Commission 7920 Norfolk Avenue Bethesda, Maryland 20814