05000259/LER-1981-019-03, /03L-0:on 810506,during Diesel Generator Redundant Start Test (EMI-3),C Engine Left Bank Air Start Motors Would Not Develop Min Rotation Speed.Caused by Sticking Vanes in Dirty Motors.Motors Replaced

/03L-0:on 810506,during Diesel Generator Redundant Start Test (EMI-3),C Engine Left Bank Air Start Motors Would Not Develop Min Rotation Speed.Caused by Sticking Vanes in Dirty Motors.Motors Replaced

ML20004C667
Person / Time
Site:	Browns Ferry
Issue date:	06/01/1981
From:	TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004C659	List: 05000259/LER-1981-019, Forwards LER 81-019/03L-0 05000259/LER-1981-019-03, /03L-0:on 810506,during Diesel Generator Redundant Start Test (EMI-3),C Engine Left Bank Air Start Motors Would Not Develop Min Rotation Speed.Caused by Sticking Vanes in Dirty Motors.Motors Replaced
References
LER-81-019-03L, LER-81-19-3L, NUDOCS 8106040440
Download: ML20004C667 (2)

LER-1981-019, /03L-0:on 810506,during Diesel Generator Redundant Start Test (EMI-3),C Engine Left Bank Air Start Motors Would Not Develop Min Rotation Speed.Caused by Sticking Vanes in Dirty Motors.Motors Replaced

Event date:
Report date:
2591981019R03 - NRC Website

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LICENSEE EVENT REPORT dournoL utocec; [

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I o 1 '1 l During refueling outage, while perforning diesel generator redundant start l

(EMI-3), the'"C" engine lef t bank air start motors would not develop minimum

n j ij i The diesel was removed from service to l

gjg l rotation speed to pass test criteria.

J o l., j l repair the air start motor.

(T.S. 3.9.B.2).

There was no danger to the health l

Previous similar events

BFRO-50-259/74004W, 74013W, I

(ny I or safety of the public.

I l.. l < l [' 74021W, and 75008W.

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• I 42 43 44 47 CALJSE oESCRIPTION AND CORRECTIVE ACTIONS Iii"llStickinv vanes, due to motors be!..e dirtv. prevented motors f rom reaching reoufred l

size 150 P,MP. Model D8cRH46.

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Innersoll-Rand Companv: air startinn motor <,.

Recurrence l

l normal operating pressure 200 psi. pneumatic activation, were replaced.

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l Program to monitor performance of motors and evaluate present preventive lii:1l control:

J 1.i-! 1 maintenance will be established.

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6 LER SUPPLEMENTAL INFORMATION

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4 Q' B FRO 2S9 ' /, 81019 Technical Specification Invol'ied 3.J.B.2 i.

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Reported Under Technical Specificatien __

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Otte cf Occurrence 5/6/81 Time of Cccurrence 0115 Unit 1 & 2. D/G's l 2]

.!cnttttention 2nii Descrittien of Occurrence:

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"C" diesel generator air start motors would not develop minimum rpm c6 pass test criteria.

Conditions Prier to Occurrence:

s Unit i refueling outage, f El i

Unit 2 at 98.2%.

1 m].

li Unit 3 at 99%.

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4 Action.specified in the Technical Specification Surveillance Requirements met j?.

due to inoperable equipment. Describe.

I d Met requirements of T.S. 3.9.B.2.

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's' 3pparent t'auce of Occurrence:

} ;q Sticking vanes due to dirty starter motors.

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~4 Analysis g_Cecurrence:

There was no janger to the health or safety of the public, no release of G

activity, no damage to the plant or equipment, and no resulting significant chain b

of events.

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.J certw.tive.\\ction.

Replaced air start wotors.

Recurrt.nce! control: A program to monitor performr.nce of motors and evaluate present preventive maintenance will be established.

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7" Failure: Data :

BFRO-50-259/74004 W, 74013W, 74021W, and 75008W.

• Retention : Period - Lifetime; Responsibility - Document Control Supervisor

• Revision :

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