05000302/LER-1981-024-03, /03L-0:on 810414,emergency Diesel Generator 1A Found Inoperable During Monthly Test SP-354.Caused by Plugged Oil Separator in Air Ejector Train.Procedure Being Revised to Increase Cleaning & Insp Frequency

/03L-0:on 810414,emergency Diesel Generator 1A Found Inoperable During Monthly Test SP-354.Caused by Plugged Oil Separator in Air Ejector Train.Procedure Being Revised to Increase Cleaning & Insp Frequency

ML19347F514
Person / Time
Site:	Crystal River
Issue date:	05/11/1981
From:	Hernandez V FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19347F511	List: 05000302/LER-1981-024, Forwards LER 81-024/03L-0 05000302/LER-1981-024-03, /03L-0:on 810414,emergency Diesel Generator 1A Found Inoperable During Monthly Test SP-354.Caused by Plugged Oil Separator in Air Ejector Train.Procedure Being Revised to Increase Cleaning & Insp Frequency
References
LER-81-024-03L, LER-81-24-3L, NUDOCS 8105190502
Download: ML19347F514 (2)

LER-1981-024, /03L-0:on 810414,emergency Diesel Generator 1A Found Inoperable During Monthly Test SP-354.Caused by Plugged Oil Separator in Air Ejector Train.Procedure Being Revised to Increase Cleaning & Insp Frequency

Event date:
Report date:
3021981024R03 - NRC Website

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,ing Diesel Generator and two (2) independent offsite circuits. There was no effect

,,,,j lupon the health or safety of the general public. This is the th'ird occurrence for EDG-1A and this is the twenty-second event reported under this Specification.

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i. il The cause of th'is event is attributed to a plugged oil separator in the crankcase

, resulting in a backpressure which blew the liquid out of the crankcase manometer, The oil separator was cle e was functionally tested. Operability y

y was restored at 0400 on 4/16/81. A procedure revision is being made to provide trait p,,,g ; an increased frequency for periodic cleaning and inspection of the air ejector s

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Name of Preparer:

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,..,'t SUPPLEMENTARY INFORMATION Report No.:

50-302/81-024/03L-0 Facility:

Crystal River Unit 3 R: port Date:

May ll,1981 Occurrence Date:

April 14, 1981 Identification of Occurrence:

Emergency Diesel Generator lA vas inoperable contrary to Technical Specification 3.8.1.1.

Conditions Prior to Occurrence:

Mode 4 cold shutdown (0%).

Description of Occurrence:

At 1030 during performance of SP-354, Emergency Diesel Fuel Oil Quality and Diesel Generator Monthly Test, EDG-1A had a high crankcase pressure alarm. Liquid was blown from the crank-case manometer and the unit was secured and declared inoperable.

Maintenance was initiated and operability was restored at 0400 on April 16, 1981.

Designation of Apparent Cause:

The cause of this event is attributed to a plugged oil separator in the air ejector train. This created a back. pressure in the crankcase which blew the liquid out of the crankcase manometer.

Analysis of Occurrence:

Redundancy was maintained by the remaining diesel and two (2) physically independent offsite circuits. There was no'effect upon the health or safety of the general public.

Corrective Action

The oil separator was cleaned and the engine was functionally tested. A procedure revision is being made to provide an increas-l ing frequency for periodic cleaning and inspection of the air ejector train.

Failure Data:

This is the third occurrence for EDG-1A and this is the twenty-second event reported under this Specification.

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