ML18038B356

Suppls Previous Responses to GL 89-19,requesting Action Re Resolution of USI A-47, Safety Implication of Control Sys in LWR Npps.

ML18038B356
Person / Time
Site:	Browns Ferry
Issue date:	07/26/1995
From:	Salas P TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
REF-GTECI-A-47, REF-GTECI-SC, TASK-A-47, TASK-OR GL-89-19, NUDOCS 9507310287
Download: ML18038B356 (9)

Text

t PRIORITY 1 (ACCELERATED RZDS PROCESSING)

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:9507310287 DOC.DATE 95/07/26 NOTARIZED: NO DOCKET FACIL:50-259 Browns Ferry Nuclear Power Station, Unit 1, Tennessee 05000259 P AUTH. NAME AUTHOR AFFILIATION SALAS,P. Tennessee Valley Authority R RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Suppl response to GL 89-19,request for action re resolution of unresolved safety Issue A-47 "Safety Implication of Control Sys in LWR Nuclear Power Plants."

DISTRIBUTION CODE: D030D COPIES RECEIVED:LTR ENCL SIZE: R TITLE: TVA Facilities Routine Correspondence NOTES RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-3 1 1 PD2-3-PD 1 1 WILLIAMS,J. 1 1 INTERNAL: ACRS 6 6 NTER 01 1 1 NRR/DSSA 1 1 O~ S 1 0 RES/DE/SSEB/SES 1 1 EXTERNAL: NOAC 1 1 NRC PDR 1 1 D

N NOTE TO ALL "RZDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM OWFN 5D8 (415-2083) TO ELIMINATE YOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 15 ENCL 14 p8

1 Tennessee Valley Authority, Post Olfice Box 2000, Decatur, Alabama 35609 July 26,'995 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of Docket No. 50-259 Tennessee Valley Authority BROWNS FERRY NUCLEAR PLANT (BFN) - SUPPLEMENTAL INFORMATION REGARDING GENERIC LETTER (GL) 89-19'EQUEST FOR ACTION RELATED TO RESOLUTION OF UNRESOLVED SAFETY ISSUE A-47 ssSAFETY IMPLICATION OF CONTROL SYSTEMS IN LWR NUCLEAR POWER PLANTS" The purpose of this letter is to supplement TVA's previous responses to GL 89-19 regarding the engineering calculations status for BFN Unit 1.

TVA letter to NRC dated May 4, 1990, (Reference 1) provided NRC with TVA's initial response to GL 89-19. In this letter, TVA committed to NRC that "TVA will finalize the engineering calculations that will form the basis for the setpoints for the high vessel feedwater level switches. These calculations will be completed for units 1, 2, and 3 prior to restart of the respective units." This commitment was repeated in TVA's revised response to GL 89-19 (Reference 2).

In response to an NRC request for additional information (Reference 3), TVA informed NRC that BFN would not be adding Technical Specification requirements for the reactor vessel overfill protection system. Additionally, this letter incorrectly stated that BFN had satisfied the requirements of GL 89-19 and that this issue was closed for BFN. At the time TVA submitted this letter to NRC, the above commitment regarding the engineering calculations was only complete for Units 2 and 3. The commitment is still open for Unit l.

9507310287 950726

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U.b. Nuclear Regulatory Commission Page 2 July 26, 1995 Therefore, TVA is informing NRC that GL 89-19 is closed for BFN Units 2 and 3, only. This issue will be closed for Unit 1, prior to restart, upon completion of the commitment regarding the engineering calculations for the high feedwater level switches.

If you have any questions regarding this reply, please contact me at (205) 729-2636. This reply contains no new commitments.

Sincere y, Pedro Salas Manager of Site Licensing cc: see page 4

~w 1 c 4, U:S. Nuclear Regulatory Commission Page 3 July 26, 1995 REFERENCES n

TVA letter to NRC dated May 4, 1990, "Browns Ferry Nuclear Plant (BFN) Response to Generic Letter 89-19 Request for Action Related to Resolution of Unresolved Safety Issue A-47 'Safety Implications of Control Systems in LWR Nuclear Plants'"-

2 ~ TVA letter to NRC dated August 17, 1990, "Browns Ferry Nuclear Plant (BFN) Revised Response to Generic Letter 89-19 Request for Action Related to Resolution of Unresolved Safety Issue A-47 'Safety Implications of Control Systems in LWR Nuclear Plants'nd Notification of Commitment Completion"

3. TVA letter to NRC dated August 29, 1994, "Browns Ferry Nuclear Plant (BFN) Units 1,2, and 3, Reply to NRC Request for Additional Information Regarding Generic Letter (GL) 89-19"

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U.S. Nuclear Regulatory Commission Page 4 July 26, 1995 cc: NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35611 Mr. J. F. Williams, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. Mark S. Lesser, Acting Branch Chief (2 copies)

U.S. Nuclear Regulatory Commission Region 101 II Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323

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