05000260/LER-1995-001-01, Forwards LER 95-001-01 Re EDG Turbocharger Failure.Util Completed Failure Analysis & Decided Most Probable Cause of Turbocharger Failure Was Tooth Bending Fatigue on Planetary Sun Gear

Forwards LER 95-001-01 Re EDG Turbocharger Failure.Util Completed Failure Analysis & Decided Most Probable Cause of Turbocharger Failure Was Tooth Bending Fatigue on Planetary Sun Gear

ML18038B271
Person / Time
Site:	Browns Ferry
Issue date:	05/03/1995
From:	Machon R TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML18038B273	List: 05000260/LER-1995-001-01, Forwards LER 95-001-01 Re EDG Turbocharger Failure.Util Completed Failure Analysis & Decided Most Probable Cause of Turbocharger Failure Was Tooth Bending Fatigue on Planetary Sun Gear
References
NUDOCS 9505120127
Download: ML18038B271 (6)

LER-1995-001, Forwards LER 95-001-01 Re EDG Turbocharger Failure.Util Completed Failure Analysis & Decided Most Probable Cause of Turbocharger Failure Was Tooth Bending Fatigue on Planetary Sun Gear

Event date:
Report date:
Reporting criterion:	10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications
2601995001R01 - NRC Website

text

~va.xna.r wv (ACCELERATED RIDS PROCESSING)

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR: 9505120127 DOC. DATE: 95/05/03 NOTARIZED: NO DOCKET FACIL:50-260 Browns Ferry Nuclear Power Station, Unit 2, Tennessee 05000260 AUTH.NAME AUTHOR AFFILIATION MACHON,R.D.

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

SUBJECT:

Forwards LER 95-001-01 re EDG turbocharger failure.

DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR / ENCL Q SIZE-TITLE: 50.73/50.9 Licensee Event Report (LER), IncidenWRpt, etc.

NOTES:

RECIPIENT ID CODE/NAME PD2-3-PD INTERNAL: ACRS AEOD/SPD/RRAB NRR/DE/ECGB NRR/DE/EMEB NRR/DOPS/OECB NRR/DRCH/HICB NRR/DSSA/SPLB NRR/DSSA/SRXB RGN2 FILE Ol EXTERNAL: L ST LOBBY WARD NOAC MURPHY,G.A NRC PDR COPIES LTTR ENCL 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 1

1 RECIPIENT ID CODE/NAME WILL'IAMS,J.

OD/SPD/RAB FILE CENTER NRR/DE/EE B

NRR/DISP/PI PB NRR/DRCH/HHFB NRR/DRCH/HOLB NRR/DS SA/S PS B/B RES/DS IR/EIB LITCO BRYCE,J H

NOAC POORE,W.

NUDOCS FULL TXT COPIES LTTR ENCL 1

1 2

2 1

1 1

1 1

1 1

1 1

1 1

1 1

1 2

2 1

1 1

1 VOTE TO ALL RIDS" RECIPIENTS:

PLEASE HELP US TO REDUCE iVKSTE!CONTACT I'HE DOCUiIEi'I'CONTROL DESk, ROOM Pl-37 (EXT. 5%- 083 ) TO FLIiIliATEYOI:R MARIE FROil DIS'I Rl8UTIOi LISTS FOR DOCUiILi'I'SYOI'Oi "I' I EDI FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED:

LTTR 27 ENCL 27

0

Thee Va ey A:"c~:r.>as: C"~w Box 2CGO. Deme. A'aca-a 3'".9 2"GC May 3, 1995 R. D. (Rick) Machon Vee Piesaec>. &ormsrerr'u ceaar:

U.S. Nuclear Regulatory Commission ATTN:

Document Control Desk Washington, D.C.

20555

Dear Sir:

10 CFR 50.73 BROGANS PERRY NUCLEAR PLANT (BPN) - UNITS 1e 2e AND 3 - DOCKET NOS ~

50 269~

50 260~

AND 296 PACILITY OPERATING LICENSE DPR 33 ~

52 ~

AND 68 LICENSEE EVENT REPORT (LER) 50 260/95001 REVISION 1 This letter submits TVA's supplemental response to LER 50-260/95001 dated February 22, 1995.

LER 50-260/95001 provided details regarding BFN's Unit 2 Emergency Diesel Generator (EDG) turbocharger failure.

The EDG turbocharger failure resulted in noncompliance with a Technical Specification (TS) Limiting Condition for Operation.

TVA reported this event in accordance with 10 CFR 50.73 (a)(2)(i)(B) as any operation or condition prohibited by the plant's TS.

TVA stated that a failure analysis of the turbocharger would be performed and a supplemental report provided.

TVA has completed the failure analysis and decided the most probable cause of the turbocharger failure was tooth bending fatigue on the planetary sun gear.

The enclosure contains the supplemental response.

The revision bar in the right-hand margin identifies the revised text.

Sincerely, R.

D.

ebon Site ice President PAB 1E-BFN cc:

See page 2

9505120127 950503 PDR ADOCK 05000260 S

PDR

0 II

U.S. Nuclear Regulatory Commission Page 2

May 3, 1995 Enclosure cc (Enclosure):

INPO Records Center Suite 1500-1100 Circle 75 Parkway Atlanta, Georgia 30339 Paul Krippner

'American Nuclear Insurers Town Center, Suite 300S 29 South Main Street West Hartford, Connecticut 06107 NRC Resident Inspector Browns Ferry Nuclear Plant Route 12, Box 637

Athens, Alabama 35611 Regional Administrator U.S. Nuclear Regulatory Commiss'ion Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323.

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

Rockvi.lie, Maryland 20852