ML18038B963

Provides Notification That Util Completed Review of Safety Re Logic Circuits for Units 2 & 3 for Sys Described in GL 96-01

ML18038B963
Person / Time
Site:	Browns Ferry
Issue date:	09/29/1997
From:	Abney T TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-96-01, GL-96-1, TAC-M94651, TAC-M94652, NUDOCS 9710070364
Download: ML18038B963 (8)

Text

CATEGORY 1 REGULRTt ZNFORMRTZON DZSTRZBUTZONLSTEM (RZDS)

ACCESSION 'NBR:9710070364 DOC.DATE: 97/09/29 NOTARIZED: YES DOCKET FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260

.50-296 Browns Ferry Nuclear Power Station, Unit 3, Tennessee 05000296 AUTH.NAME AUTHOR AFFILIATION ABNEY,T.E.

Tennessee Valley Authority RECIP. NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Provides notification that util completed review of safety re logic circuits for Units 2

a 3 for sys described in GL 96-01.

DISTRIBUTION CODE: A067D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: GL 96-01 Response-Testing of Safety-Related Logic NOTES:

A T'

RECIPIENT ID CODE/NAME N

-3 INTERNA FILE CENTER EXTERNAL: NOAC COPIES LTTR ENCL RECIPIENT ID CODE/NAME WILLIAMS,J.

NRR/DRCH/HICB NRC PDR COPIES LTTR ENCL 0

D 0

U N

NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE. TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LISTS OR REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTROL DESK (DCD)

ON EXTENSION 41S-2083 TOTAL NUMBER OF COPIES REQUIRED:

LTTR 6

ENCL

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Tennessee Valley Authority,'Post Office Box 2000, Decatur, PJabama 35609-2000 September 29, 1997 10 CFR 50. 54 (f)

U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555 Gentlemen:

In the Matter of

)

Tennessee Valley Authority

)

Docket Nos.

50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 2 AND 3 GENERIC LETTER (GL) 96 0 1 r TESTING OF SAFETY RELATED LOGIC CIRCUITS r NOTIFICATION OF COMPLETION OF REQUESTED ACTIONS (TAC NOS.

M94 651 AND 94 652)

This letter provides notification that TVA has.completed its review of safety related logic circuits for BFN Units 2 and 3

for the systems described in GL 96-01.,

TVA committed to implement the requested actions outlined in GL 96-01 in conjunction with BFN's conversion to Improved Standard Technical Specifications (ISTS), by letter dated April 18, 1997.

Although the implementation schedule for ISTS has been delayed, the reviews requested by GL 96-01 have been completed.

Specific actions or items which will have to be added to the Surveillance Instructions (SI) to meet ISTS requirements have been identified and are scheduled to be performed as part of the procedure upgrade program for implementation of ISTS.

In addition, a comparison was made with the current Technical Specifications (TS) for Units 2 and 3.

The review identified two TS testing issues inadequate surveillance of the Control pt")it/ t 7 9710070364 9709'29" PDR ADQCK 05000260 P

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U.S. Nuclear Regulatory Commission Page 2

September 29, 1997 Room Emergency Ventilation System (CREVS) initiation logic and control bay isolation logic, and inadequate surveillance of the Residual Heat Removal (RHR)

Loop I and Loop II valve logic and interlocks.

These issues were identified by Licensee Event Reports 50-259/97002, transmitted by TVA letter dated April 11,

1997, and 50-260/97002, transmitted by TVA letter dated July 25, 1997.

For CREVS, the SI was revised and the applicable SI section was successfully performed.

For the RHR

item, Work Orders were issued and successfully completed to test the affected relay contacts.

The affected RHR SIs were subsequently revised to assure that future surveillance testing is performed properly.

With the above

changes, the BFN Units 2 and 3 surveillance programs for the reactor protection system, emergency diesel generator load shedding and sequencing, and actuation logic for engineered safety features systems are in compliance with the existing TS, as required by GL 96-01.

In addition, the necessary reviews have been completed and the required actions have been identified and scheduled to assure compliance with ISTS upon implementation.

If you have any questions, please contact me at (205) 729-2636.

cerel E.

n Manag of Licens ng an Industry Aff irs Subscribed and sw rn to before me this ~4 day of 1997.

Notary Public

'My. commission Expires

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See page 3

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U S. Nuclear Regulatory Commission Page 3

September 29, 1997 cc:

Mr. Mark S. Lesser, Branch Chief U.S. Nuclear Regulatory Commission Region II 61 Forsyth Street, S.W.

Suite 23T85 Atlanta, Georgia 30303 NRC Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road

Athens, Alabama 35611 Mr. J.

F. Williams, Project Manager U'.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852

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