05000296/LER-1980-008-03, /03L-0:on 800402,3B Diesel Generator Governor Actuator Would Not Respond Properly During Operability Surveillance Instruction.Cause Unknown.Oil Contamination Suspected.Sump Flushed & Refilled

/03L-0:on 800402,3B Diesel Generator Governor Actuator Would Not Respond Properly During Operability Surveillance Instruction.Cause Unknown.Oil Contamination Suspected.Sump Flushed & Refilled

ML18025A839
Person / Time
Site:	Browns Ferry
Issue date:	05/01/1980
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18025A838	List: 05000296/LER-1980-008, Forwards LER 80-008/03L-0 05000296/LER-1980-008-03, /03L-0:on 800402,3B Diesel Generator Governor Actuator Would Not Respond Properly During Operability Surveillance Instruction.Cause Unknown.Oil Contamination Suspected.Sump Flushed & Refilled
References
LER-80-008-03L-02, LER-80-8-3L-2, NUDOCS 8005070527
Download: ML18025A839 (4)

LER-1980-008, /03L-0:on 800402,3B Diesel Generator Governor Actuator Would Not Respond Properly During Operability Surveillance Instruction.Cause Unknown.Oil Contamination Suspected.Sump Flushed & Refilled

Event date:
Report date:
2961980008R03 - NRC Website

text

CONTROL SLOCK:

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9 LICENSEE CODE 14 15 8005 O V em~7 U. S.

LEAR REGULATORY~IVIISSION ICEIIIN4 EVENT RP~NRT QI (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATIDNI Qs 4 i

> iQ4~Q LICENSE. NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T 7

8 BEPDBT I L I~s 0

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4 0

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SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 15 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 010 With unit at 100 percent steady state

power, the 3B diesel enerator governor 0

09 60 actuator would not respond properly during operabi lity survei 1lance instruction 4

4.9.A.1, supplement A.

Redundant systems were operable.

There was no danger to the health or safety of the public, and no significant resul ting chain of events.

Previous similar occurrence reported on LER BFRO-50-259/76023

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CAUSE

CAUSE COMP.

VALVE CODE CODE SVBCODE COMPONENT CODE SVBCOOE

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10 11 12 13 18 19 20 SEOUEN TIAL OCCURRENCE REPORT REVISION LF RAMBO EVENT YEAR REPORT NO.

CODE TYPE NO, Q11 Rsssss

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0 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPBDQ PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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33 34 35 36 37 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 Unknown; suspected oil contamination.

The sump was flushed and refilled with new oil, and surveillance instruction 4.9.A.1 supplement A was successfully run.

Woodword Governor, type EGB, model 10-C.

Oil will be sampled and changed annually.

9 11 12 LOSS OF OR DAMAGE TO FACILITYQ43 TYPE

DESCRIPTION

~ZQ NA 7

8 7

8 9

10 PUB L ICI7 Y ISSVED DESCRIPTION ~S

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10 NAME OF PREPARER 7

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FAC I LIT Y STATUS

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10 12 I'I 44 ACTIVITY CONTENT RELEASEO OF RELEASE AMOVNTOF ACTIVITYQ 6

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10 PEBSO'NNFL EXPOSURES NUMBER TYPE DESCRIPTION Q39

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I I 12 13 PEHSVIINEL INJURIES NUMBER DESCBIP IIONQI

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Qs NA 80 80 45

'0 80 80 PHONE:

68 69 80 NRC USE ONLY 44 80 1s 0

METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32

~B Q31 0 erator Observation 45 46 LOCATIONOF RELEASE Q

Te~c!ssee Valley Authority Browns Ferry Nucieai Plant Form P.F-l7 BF 15

's l/10/$9 I.ER SUPPI.ENENTAL INFORMATION BFRO 296 /

8008

'I'echnical Specification Involved Reported Under Techr ical Specification 6.7.2.b(2)

Date of Occurrence 4/2/80 rime of Occurrence 0545 3.9.B.2 Unit.

3 Identification and~Dcscri tion'oi Occurrence:

The 3B diesel generator failed operability SI 4.9.A.1, Sup A.

The governor did not respond properly.

Conditions Prior to Occurrence:

Unit 1 12% power ascension Unit 2 98.8% steady state operation Unit 3 100% steady state operation Action specified in the Technical. Specification Surveillance Requirements met s

lA, 1B, 1C, 1D, 3A, 3C, 3D diesel generators all operable.

Apparent Cause of Occurrence:

The oil was possibly dirty.

~Anal sis of Occurrence:

There was no danger to the health or safety of the public, no damage to plant or equip-

ment, no release of activity, and no -resulting chain of events.

Corrective Action

The sump was flushed and filled with new oil.

Oil will be sampled and changed annual',y.

Failure Data:

NA

+Retention:

eriod - Lifetime; Responsibility - Administrative Supervisor

• Revision:

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