05000346/LER-1978-056-03, /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

/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: 05000346/LER-1978-056, Forwards LER 78-056/03L-0 05000346/LER-1978-056-03, /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
References
LER-78-056-03L, LER-78-56-3L, NUDOCS 8001280738
Download: ML19319B882 (2)

LER-1978-056, /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

Event date:
Report date:
3461978056R03 - NRC Website

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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 excessive noise, and feeling abnormally hot.

Service Water Pump 1-1 was shutdown aad [

g o,, g l There was no danger to the health and safety ]

J 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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The lubrication manual was re' vised so thae 211 g j throtigh the grease fitting.

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

i A new bearing will be installed on Service Wcter Pump 1-1 under Maintenance Work j

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TOLEDO EDISON COMPANY O'

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

~ hours, operations personnel, observed the motor lower guide bearing on Service J

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 This is being reported as a component failure.

at the time of the occurrence.

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

The unit was in Mode 6 at the time of the occur-public or to unit personnel.

The standby Service Water Pump 1-3 was lined up to supply service water rence.

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

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

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Maintenance Work Order 78-1307.

There have been no previous failures of these bearings.

Failure Data:

.e LER #78-056 I

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