ML19319E432

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AO-50-313/75-9:on 751120,during Diesel Generator 2 Test,Oil Leak Developed at Oil Cooler Outlet Flange.Caused by O-ring Gasket Failure.Gasket Replaced & Diesel Generator 2 Tested to Verify Operability & Gasket Tightness
ML19319E432
Person / Time
Site: Arkansas Nuclear 
Issue date: 12/05/1975
From: David Williams
ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19319E431 List:
References
NUDOCS 8004100710
Download: ML19319E432 (4)


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Abnormal Occurrence Report No.

50-313/75-9'

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Report Date: December 5, 1975

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Occurrence Date:

November 26, 1975 4.

Facility:

Arkansas Nuclear Onc-Unit 1 Russellville, Arkansas 5.

Identification of Occurrenec:

Number 2 Diesel Generator (K4B) lube oil cooler outlet flange Icak.

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Conditions Prior to Occurrence:

X Reactor Power 2542 blWth Steady-State Power 836 blNe Not Output llot Standby Percent of Full Power 99 Cold Shutdown Load Changes During Rou.tinc n

Refueling Shutdown Pouer Operation

, Routine Startup Operation Routino Shutdown Operation Other (specify) i'

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Description of Occurrence:

During th'e testing of No. 2 Diesel Generator'(K4B) at 0930 on 11/26/75, flange. The test was an oil leak developed at the oil cooler outlet being conducted in order to remove No. 1 Diesel Generator (K4A) from service for the performance of routine maintenance.

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' Pat:c 2 of 4 NSP ID, itev. 2 R reh al,1975

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Ab%rmal Odcurrence. Report ko.

50-313/75-9 8.

Desip, nation of Apparent Cause of Occurrence:

Design Procedure Skniufacturc IJnusual S$rvice Condition

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Including linvi ronmenta1 Installation /

Construction Component Failurc X

Operator Other (specify)

Apparent 0-ring gasket failure.

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1 9.

Analysis of Occurrence:

Number 2 diesel generator was inoperable from 0930 until 1430 for gasker.

' replacement. The remaiping diesel generator (No.1) was verified operabic at 0930 hours0.0108 days <br />0.258 hours <br />0.00154 weeks <br />3.53865e-4 months <br />. Since the remaining diesel generator was verified dperable, there was no hazard to the health and safety of the public.

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Abnormal Occurrence Report No.

50-313/75-9 10.

Corrective Action:

0-ring gasket was replaced and No. 2 diesel generator tested to verify operability and gasket leak tightness.

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Failuro Data:

l No previous failures of this type.

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Equipment identification:

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Stewart 6 Stevenson 5

i 2750 KW GM Diesel i

Electric Products Generator i

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i Kirch 4, Ib75 NSP-10, Rev. 2 Panc 4 of 4 h

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