ML18033B041

Responds to NRC 890831 Ltr Requesting Addl Info Re RHR Pumps for Unit 2.Info Re Items 2.0 & 3.0 Concerning RHR Pump 2B Encl

ML18033B041
Person / Time
Site:	Browns Ferry
Issue date:	11/06/1989
From:	Michael Ray TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
TAC-75242, NUDOCS 8911130312
Download: ML18033B041 (16)

Text

ACCELERATED DISTRIBUTION DEMONSTPWTION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8911130312 DOC.DATE: 89/11/06 NOTARIZED: NO DOCKET FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH. NAME "

AUTHOR AFFILIATION RAY,M.J. Tennessee Valley Authority RECXP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Responds for Unit to 2.

NRC 890831 ltr recpxesting addi info re RHR pumps DISTRIBUTION CODE: D030D COPXES RECEXVED:LTR ENCL SIZE: D TITLE: TVA Facilities Routine Correspondence S

NOTES:1 Copy each to: S.Black,D.M.Crutchfield,B.D.Liaw, 05000260 R.Pierson,B.Wilson /

RECIPIENT COPIES RECXPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL D LA 1 1 PD 1 1 GEARS,G 1 1 D

INTERNAL: ACRS 1 1 NUDOCS-ABSTRACT 1 1 OC B 1 0 OGC/HDS2 1 0 EG 01 1 1 EXTERNAL: LPDR 1 1 NRC PDR 1 1 NSIC 1 1 NOTES: 5 5 D

D NOTE TO ALL "RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!

TOTAL NUMBER OF COPIES REQUIRED: LTTR 16 ENCL 14

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TENNESSEE VALLEY AUTHORITY CHATTANOOGA, TENNESSEE 87401 SN 1578 Lookout Place NOV 88 $ 88 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Hashington, D.C. 20555 Gentlemen:

In the Hatter of Docket No. 50-260 Tennessee Valley Authority BRONNS FERRY NUCLEAR PLANT (BFN) REQUEST FOR ADDITIONAL INFORMATION CONCERNING THE RESIDUAL HEAT REMOVAL (RHR) PUMPS This letter is in response to NRC's letter of August 31, 1989, requesting additional information concerning the RHR pumps for BFN, Unit 2. Four items of additional information (1.0 through 4.0) were requested to allow further investigation and evaluation of RHR motor protection and RHR motor operating temperatures.

At this time, we are submitting information regarding Item 2.0 (RHR pump motor electrical protection relay settings, including the current transformer ratios) and Item 3.0 (RHR pump head horsepower versus flow curve). The information enclosed applies specifically to RHR Pump 2B. This information is considered typical of all four RHR pumps on Unit 2.

Additional time is required to obtain the information needed for Item 1.0 (RHR pump motor thermal damage curve) and Item 4.0 (RHR pump motor insulation class, rated temperature rise, and rated ambient temperature). This additional information was not available at TVA and is being obtained from General Electric. He expect to submit this remaining information by December 15, 1989. contains the information requested for Item 2.0, and Enclosure 2 contains the information requested for Item 3.0. The remaining action for Items 1.0 and 4.0 is listed in Enclosure 3.

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An Equal Opportunity Employer

,'Ago U.S. Nuclear Regulatory Commission NeV Oe see If you have any questions, please telephone Patrick P. Carier, BFN, at (205) 729-3570.

Very truly yours, TENNESSEE VALLEY AUTHORITY Manager, Nucle Licensing and Regulatory Affairs

.Enclosures cc (Enclosures):

Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.ST Nuclear Regulatory Commission One Nhite Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. B. A. l<ilson, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NH, Suite 2900, Atlanta, Georgia 30323 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637 Athens, Alabama 35609-2000

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ENCLOSURE 1 REQUEST FOR ADDITIONAL INFORMATION CONCERNING THE RESIDUAL HEAT REMOVAL (RHR) PUMPS Item 2.0 The RHR pump motor electrical protection relay settings, including the current transformer ratios (RHR pump 2B)

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ENCLOSURE 2 REQUEST FOR ADDITIONAL INFORMATION CONCERNING THE RESIDUAL HEAT REMOVAL (RHR) PUMPS Item 3.0 The RHR pump head horsepower versus flow curve (RHR pump 28)

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3 REQUEST FOR ADDITIONAL INFORMATION CONCERNING THE RESIDUAL HEAT REMOVAL (RHR) PUMPS Additional time is required to obtain the information needed for item 1.0 (RHR pump motor thermal damage curve) and item 4.0 (RHR pump motor insulation class, rated temperature rise, and rated ambient temperature). He expect to submit this remaining information by December 15, 1989.

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