ML18037A452

Informs NRC of Proposed Alternative Chemical Treatment Program for RHRSW Sys,In Ref to Commitment Made in in Response to GL 89-13, SWS Problems Affecting Safety Related Equipment

ML18037A452
Person / Time
Site:	Browns Ferry
Issue date:	09/01/1993
From:	Salas P TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-89-13, NUDOCS 9309090131
Download: ML18037A452 (6)

Text

-'ACCELERATE DOCUMENT DISTRI UTION SYSTEM REGULA Y INFORMATION DISTRIBUTIO YSTEM (RIDS)

SUBJECT:

Informs NRC of proposed alternative chemical treatment program, for RHRSW sys,in ref to commitment made in 900316 ltr in response to GL 89-13, "SWS Problems Affecting Safety Related Equipment."

S DISTRIBUTION CODE:

A065D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: Generic Ltr 89-13 Svc Water Sys Problems Affecting Safety-Related E

D NOTES:

ACCESSION NBR:9309090131 DOC.DATE: 93/09/01 NOTARIZED:

NO DOCKET FACIL:50;,259 Browns Ferry Nuclear Power Station, Unit 1, Tennessee 05000259 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 SALAS,P.

Tennessee Valley Authority R

RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

RECIPIENT ID CODE/NAME ROSS,T.

INTERNAL: AEOD/DSP/ROAB NRR/DRPW/OGCB NRR-G FILE 01 EXTERNAL: NRC PDR COPIES LTTR ENCL RECIPIENT ID CODE/NAME WILLIAMSgJ.

NRR/DRIL NRR/DSSA/SPLB NRR/RSIB NSIC COPIES LTTR ENCL NOTE TO ALL"RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL D)'SK, ROOM Pl-37 (EXT. 504-2065) TO ELIMINATEYOUR NAME FROM DISTRIBU'I'lON LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED:

LTTR ll ENCL

.CX

~

~

~ 4 Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609 SE1'

~

1993 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555 Gentlemen:

In the matter of

)

Tennessee Valley Authority

)

Docket No. 50-259 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1 g 2 ~

AND 3 PROPOSED ALTERNATE CHEMICAL TREATMENT PROGRAM FOR THE RESIDUAL HEAT REMOVAL SERVICE WATER (RHRSW)

SYSTEM The purpose of this, letter is to inform NRC of the BFN Units 1,

2,; and;3 proposed,al,tern'alive chemical treatment program for the,RHRSW. system..

~

4 %ii,

(

il In a letter issued March 16,'990, TVA made the following commitment to NRC relative to Generic Letter 89-13 "Service Water System Problems Affecting Safety Related Equipment."

"Within two months of cycle 7 operation, TVA will incorporate the RHRSW into the existing chemical treatment program, if chemical treatment of the RHRSW is determined to be feasible.

Otherwise, BFN will propose an equally effective alternative in the followup submittal required to confirm implementation of the actions taken in response to the generic letter."

BFN has determined that incorporating the RHRSW system into the existing chemical treatment program is not feasible and will not provide BFN with the desired results.

Because the RHRSW system is a stagnant

system, the flow-through treatment program currently being used on the Emergency Equipment.

Cooling Water System is not a desirable option.

The BFN proposed alternative is to chemically treat the RHRSW system during applicable flushing/testing activities.

This will ensure that the=chemicals are dispersed throughout the RHRSW

'system for the, extent of protection that is feasible during subsequent system stagnation."

I 930'70's~0131 s~30901 PDR ADOCK 05000Z59 p

PDR

~

~

lf L

t E

~

~

U.S. Nuclear Regulatory Commission Page 2

SEP 0 i 1993 The RHRSW System is included in a comprehensive chemical treatment program for raw water systems which is expected to be implemented by Unit 2 cycle 8 operation.

The comprehensive program will replace the existing raw water treatment program which is.currently limited to periodic biocide injections.

This new approach not only provides a

change in the biocide used, but will also provide for injection of corrosion inhibitors and sequestrants.

This alternate treatment program will enhance long-term system integrity and performance.

If vou have any auestions, please telephone me at (205) 729-2636

'i el ro Salas Manager of Site Licensing' Mr. R. V. Crlenjak, Project Chief U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637

Athens, Alabama 35611 Mr. Thierry M. Ross, Project Manager U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852

l