ML20085D939
| ML20085D939 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 07/22/1983 |
| From: | Kammer D TENNESSEE VALLEY AUTHORITY |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.3.18, TASK-TM NUDOCS 8307290206 | |
| Download: ML20085D939 (2) | |
Text
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e TENNESSEE VALLEY AUTHORITY CHATTANOOGA, TENNESSEE 374ot 400 Chestnut Street Tower II July 22, 1983 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Dear Mr. Denton:
In the Matter of the
)
Docket Nos. 50-259 Tennessee Valley Authority
)
50-260 50-296 By letter from D. B. Vassallo to H. G. Parris dated June 3, 1983, we received the NRC request for additional information regarding implementation of NUREG-0737, Item II.K.3 18, ADS Logic Modification.
Enclosed is our response for Browns Ferry and Hartsville Nuclear Plants, the only plants of TVA to which the subject report applies.
Very truly yours, TENNESSEE VALLEY AUTHORITY oS W D. S. Kammer Nuclear Engineer Subscrib sworn o before me his ay o 1983 Notary Public A
My Commission Expires 7 "5"3 Enclosure oc (Enclosure):
U.S. Nuclear Regulatory Commission Region II ATTN: James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 2900 Atlanta, Georgia 30303 Mr. R. J. Clark Browns Ferry Project Manager U.S. Nuclear Regulatory Commission 7920 Norfolk Avenue Bethesda, Maryland 20814 t) 8307290206 830722 1
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PDR ADOCK 05000259 P
PDR 1983-TVA SOTH ANNIVERSARY An Equal Opportunity Employer
-. _. = _ _ _ - -
O ENCLOSURE RESPONSE TO D. B. VASSALLO'S LETTER TO H. G. PARRIS DATED JUNE 3, 1983 NUREG-0737, ITEM II.K.3.18, ADS LOGIC MODIFICATIONS BROWNS PERRY AND HARTSVILLE NUCLEAR PLANTS
(
Reference:
TVA letter from LT M. Mills to H. R. Denton l
dated April 4, 1981) 4 Browns Ferry TVA has participated in the BWR Owners' Group (BWROG) report which elaborated on various logic modifications to provide auto-initiation of the ADS for nondesign basis events. We agree with the general conclusions of the report in that the proposed changes can be accomplished with no loss of plant safety factor. We are also in agreement with the basic premise stated in the report that the existing system is quite adequate. This option of making no changes in ADS logic is more consistent with our general philosophy of operation and system design.
The above stated philosophy and practice was discussed in the referenced letter. Technical bases have also been previously 1
provided in the original BWROG submittal on this matter dated March 31, 1981.
Hartsville As a result of the deferral of Hartsville, TVA at this time chooses to defer its choice of option and, thus, also to defer mo'dification of the ADS logic system. This matter will be addressed after restart of design and construction.
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