ML19319B882

LER 78-056/03L-0:on 780523,during Insp,Svc Water Pump Motor Bearing Found Oozing Grease,Making Excessive Noise & Feeling Abnormally Hot.Caused by Excessive Greasing of Bearing Through Grease Fitting.Lubrication Manual Revised

ML19319B882
Person / Time
Site:	Davis Besse
Issue date:	06/19/1978
From:	Hartigan J TOLEDO EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19319B875	List: ML19319B874 ML19319B882
References
LER-78-056-03L, LER-78-56-3L, NUDOCS 8001280738
Download: ML19319B882 (2)

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So IOIi1 so 63 OOCKETNUMSER E9 EVENT DATE 74 75 REPORT DATE

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EVENT DEscalPTION AND PROBA8LE CONSEQUENCES h 1 l o # 2 l l During a routine inspection on 5/23/78 at 2255 hours0.0261 days <br />0.626 hours <br />0.00373 weeks <br />8.580275e-4 months <br />, operations personnel observed the motor' lower }uide bearing on Service Water Punp motor 1-1 oozing grease, making j

o ,3 ; l g o ,, g l excessive noise, and feeling abnormally hot. Service Water Pump 1-1 was shutdown aad [

J There was no danger to the health and safety ]

g o s s i l standby' Service. Water Pump 'l-3 started.

l l 0 l6 l l of the public or to unit personnel. (NP-33-78-71)

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' COMPONENT CoOE SU dE SU E EOs" YCE shaCEE M lW IA l@ l Dl@ l Z lh lM l0 lT l0OCCURRENCE 83 lR IX lh I.Zlh l Zlh 18 19 2a R EVislON 9 10 11 17 7 8 REPORT SEQUENTIAL TYPE NO.

REPORT NO. CODE LER EVENTYEAR

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41 IN 42 l@ 43 44 47 33 34 35 CAUSE DESCRIPTION AND CCRRECTIVE ACTIONS @ I g l The apparent cause of the occurrence was from excessive greasing of the bearine '

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, ma r. I j The lubrication manual was re' vised so thae 211 g j throtigh the grease fitting.

i i water pump motor bearings will be hand packed rather than creased throuch a fittine.

j A new bearing will be installed on Service Wcter Pump 1-1 under Maintenance Work Ii(3I I '

,,,j,; Order 78-1307.

80 7 8 9 DISCOVERY DESCRIPTION oTHER STATUS I V Y sA  % POWER l

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PERSONNEL EXPO $URES NuusE:t TYPE OtsCRiPTiON - l.

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PHONE:

419-259-5000. Ext. 29 John P. Hartican DVR 78-091 Nfug oP PngP4Rsn _

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- TOLEDO EDISON COMPANY  %

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• DAVIS-BESSE UNIT ONE NUCLEAR POWER STATION

. SUPPLEMENTAL INFORMATION FOR LIR NP-33-78-71 DATE OF EVENT: May 23, 1978 FACILITY: Davis-Besse Unit 1 ' L IDENTIFICATION OF OCCURRDICE: Service Water Pump 1-1 motor lower guide bearing-fallure.

The unit .was in Mo'de 6 with Power (MWT) = 0, Conditions Prior to Occurrence:

and Load (MWE) = 0. ,

Description of Occurrence: During a routine inspection on May 23, 1978 at 2255 J ~ hours, operations personnel , observed the motor lower guide bearing on Service Water Rump motor 1-1 oozing grease,. making excessive noise, and feeling. abnormal-

-- ly hot. Service Water Pump 1-1 was shutdown and standby Service Water Pump 1-3 started. .

This did not place the unit in an. action statement since the unit was in Mode 6 at the time of the occurrence. This is being reported as a component failure.

Designation of Aoparent Cause cf Occurrence: The apparent cause of the occur-rence was from excessive greasing of the bearing through the < grease fitting.

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Analysis of Occurrence: ' There was no danger to the health arid safety of the '

public or to unit personnel. The unit was in Mode 6 at the time of the occur-rence. The standby Service Water Pump 1-3 was lined up to supply service water a3 required. '.~

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Correctivs Action: The lubrication manual was revised so tihat all the ervice

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water pump motor bearings sill.be hand. packed rather than greased through a ~

fieting. A new bearing will be installed ~on Service Water Pump 1-l'under-

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Maintenance Work Order 78-1307.  :

Failure Data: There have been no previous failures of these bearings.

.e LER #78-056 I

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