ML18033A519

Forwards Browns Ferry Nuclear Plant Diesel Generator Performance Evaluation, Demonstrating That Generator Will Adequately Perform Intended Safety Function by Starting & Accelerating All Required Loads within Required Time

ML18033A519
Person / Time
Site:	Browns Ferry
Issue date:	01/20/1989
From:	Gridley R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML18033A520	List: ML18033A519
References
NUDOCS 8901240484
Download: ML18033A519 (6)

Text

I AC CEIZRATED DISTRIBUTION DEMONSTRAON SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ESSION NBR:8901240484 DOC.DATE: 89/01/20 NOTARIZED: NO DOCKET '

'ACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH.NAME AUTHOR AFFILIATION GRIDLEY,R.

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

SUBJECT:

Forwards diesel generator evaluation rept for facility,per 880810 request.

DISTRIBUTION CODE:

D030D COPIES RECEIVED:LTR ENCL SIZE:

TITLE: TVA Facilities Routine Correspondence NOTES:1 Copy each to:

S B.D.Llaw,F.McCoy.

~

!I RECIPIENT ID CODE/NAME SIMMS,M GEARS,G COPIES LTTR ENCL 1

1 1

1 S

II RECIPIENT ID CODE/NAME PD

.Black, J.G.Partlow, S.Richardson COPIES LTTR ENCL 1

1 05000260 ~

j A

INTERNAL: ACRS NUDOCS-ABSTRACT EG-PI-~

01 EXTERNAL: LPDR NSIC ES:

1 1

1 1

1 1

1 1

1 1

5 5

ADM/LFMB OGC/HDS2 NRC PDR 1

0 1

0 1

1 8

j'OTE TO ALL "RIDS" RECIPIEPIS:

PIZASE HELP US IO REXJCE 16~~1 CGNI'ACT 'IHE DOCUMEPZ CGNI'ROL DESK, KXM P1-37 (EXT. 20079)

TO EIZMQQZE YOUR NAME FRGH DISTRIKJTIGN LISTS FOR DOCKlMEHZS MNJ DGNiT NEED)

TOTAL NUMBER OF COPIES REQUIRED:

LTTR 16 ENCL 14 (l-)i

I I

l r

TENNESSEE VALLEYAUTHORITY CHATTANOOGA. TENNESSEE 3'7401 SN 157B L'ookout Place JAN PO $89 U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Hashington, D.C.

20555 Gentlemen:

Docket Nos.

50-260 In the Matter of

)

Tennessee Valley Authority C

BRONNS FERRY NUCLEAR PLANT (BFN) DIESEL GENERATOR EVALUATION REPORT This letter transmits the documents required to resolve the BFN diesel generator open issues as requested by your staff in the meeting on August 10, 1988.

In a subsequent discussion on November 15,

1988, TVA agreed to provide this information by January 20, 1989.

In this discussion, the NRC staff provided a

summary of the issues that TVA is required to address in order for the staff to complete their review and safety evaluation.

The actions required to resolve the issues are as follows:

1.

Provide the diesel generator load summary report (enclosure 1).

2.

Evaluate the effects of reduced voltage starts on the residual heat

. removal pump motors to demonstrate adequacy of operation for plant life (enclosure 1, section IV).

3.

Provide summary and resolution of restart test record problem (enclosure 2).

4.

Provide analysis and closeout of problem with the diesel power available time sequence exceeding sequence used in 10 CFR 50, Appendix K analysis.

This submittal provides documentation for the first three issues.

Documentation for issue number four is not included.

The Condition Adverse to Quality Report (CAQR)

BFP 8805370 which addresses issue four, does not question the adequacy of the diesel generators to start and accelerate the required loads within the required time periods.

The CAQR does question the adequacy of the logic for the loss of offsite power/loss of coolant accident (LOP/LOCA) event to connect the required load to the diesel generators within the time required by the 10 CFR 50, Appendix K analysis.

a90>2404S4 S90i.2g PDR AGOCK 05000260 P

PDC An Equal Opportunity Employer gg'0 I

'i

k k

I

~ ~

U.S. Nuclear Regulatory Commission The evaluation report (enclosure 1) shows that the diesel generators are capable of p'owering the loads, once they are connected to the system.

The corrective action for this CAQR will not involve the diesel generators but will instead be concerned with the Appendix K analysis and or the response logic for the LOP/LOCA,event.

In summary, the documents provided herein demonstrate that the BFN diesel generators will adequately perform their intended safety function for unit 2 by starting and accelerating allthe required loads within the required time periods.

Please refer any questions concerning this submittal to Patrick Carier, BFN Site Licensing, (205) 729-3570.

Very truly yours, TENNESSEE VA L AUTHORITY

~

~

R. Gridley, Ma ager Nuclear Licen ing and Regulatory Affairs cc (Enclosures):

Ms.

S.

C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852 Mr. F.

R.

McCoy, Assistant Director for Inspection Programs TVA Projects Division U.S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Browns Ferry Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637

Athens, Alabama 35609-2000

C

(

EP