ML20085F568

AO AO-26-74:on 741104,diesel Generator 1-1 Tripped Off Shortly After Starting During Monthly Test.Caused by Low Lube Oil Pressure Due to Failure of Main Shaft to Lube Oil Pump.Oil Pump Replaced

ML20085F568
Person / Time
Site:	Palisades
Issue date:	11/13/1974
From:	Sewell R CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20085F571	List: ML20085F568 ML20085F572
References
AO-26-74, NUDOCS 8308220457
Download: ML20085F568 (2)

Text

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Consumers Power Company

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)I General Offices 212 West u.cn gart Avenue. Jackson, Mechegan 49201. Area Code S17 7HH.OSSO November 13, 1974 y

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S NOV 15197c

E.L ATOMIC DENT cp ccouluton A Directorate of Licensing Re: Docket 50-255 seister US Atomic Energy Commission License DPR-20 f> c, Washington, DC 205h5 Palisades Plant - A0-26-74 g g Gentlemen:

Attached is Abnormal Occurrence Report A0-26-74 which covers the failure of the lube oil pump on emergency diesel Generator 1-1.

This failure occurred during test operation of the diesel generator and there was no effect on plant operation.

An occurrence involving a leak in the primary makeup tank (T-90) was reported on 11/4/74 and initially called Abnormal Occurrence A0-25-74. Following the plant's review of this occurrence, it van re-claasified as a nonreportable event. This change was discussed with Region III on 11/6/Th.

Yours very truly, Ralph B. Sewell (Signed)

DAB /mel Ralph B. Sewell Nuclear Licensing Administrator CC: JGKeppler, USAEC 8300220457 741113 gDRADOCK 05000255 _

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ABNORMAL OCCURRENCE REPORT Palisades Plant

1. Report Number: A0-Th-26, Docket 50-255

2. a. Report Date: November 13, 1974.

b. Occurrence Date: November h, 1974

3. Facility: Palisades Plant, Covert, Nuchigan.

h. Identification of Occurrence: Failure of the lube oil pump during monthly testing.

5 Conditions Prior to Occurrence: The reactor was in the hot standby condition.

6. Description of Occurrence: During the monthly test running of diesel Generator 1-1 it tripped off shortly after starting. The cause of the trip was due to lov lube oil pressure. Diesel 1-2 was started immediately and was test run to prove its operability.

7. Apparent Cause: Failure of the main shaft to the lube oil pump.

8. Analysis of Occurrence: Since the failure occurred during test operation, there was no affect on other operating systems. The reason for the failure is unknown at this time.

9 Corrective Action:

a. Replaced failed oil pump wiin spare unit.

b. Failed oil pump will be rebuilt or replaced.

c. The failed oil pump shaft will be sent out for analysis to determine why it failed. Further action on Diesel 1-1 oil pump will avait the results of the analysis.

10. Failure Data:

a. There is no record of any previous shaft failures or malfunctions of this equipment.

b. Emergency diesel Generator 1-1, 3125 kVA, .8 PF, air start, water cooled. Manufacturer is Alco. Component that failed is the lube oil pump.

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