ML20052H602

LER 82-032/03L-0:on 820412,emergency Diesel Generator 1B Failed to Meet Starting Time Criteria.Caused by Manual Timing Techniques Used for Determining Elapsed Start Time. Methods for Improving Techniques Under Investigation

ML20052H602
Person / Time
Site:	Crystal River
Issue date:	05/12/1982
From:	Charles Brown FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20052H585	List: ML20052H584 ML20052H602
References
LER-82-032-03L, LER-82-32-3L, NUDOCS 8205210257
Download: ML20052H602 (2)

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SUPPLEMENTARY INFORMATION

~ Report No.: 50-302/82-032/03L-0 Facility: Crystal River Unit 3 Report Date: May 12, 1982 Occurrence Date: April 12, 1982 Identification of Occurrence:

Emergency generator IB failed to meet surveillance criteria, contrary to Technical Specification 3.8.1.1.

Conditions Prior to Occurrence:

Mode 1 power operation (90%).

Description of Occurrence:

At 0600, on April 12, 1982 Emergency Diesel Generator 1B failed to meet the. required starting time criteria. Redun-dancy was provided by Emergency Diesel Generator lA. The Emergency Diesel Generator 1B was restarted and the surveillance criteria was met.

Designation of Apparent Cause:

The cause of this event is attributed to manual timing techniques used for determining the elapsed start time.

Analysis of Occurrence:

The surveillance criteria was missed by three-tenths.of a second and redundancy was provided by Emergency Diesel Genera-tor lA. There was no effect upon the health or safety of the general public.

Corrective Action:

Emergency Diesel Generator 1B was restarted and surveillance criteria was met. Florida Power Corporation engineering is consulting with Colt Industries and Y.A.I. to determine.if there is a way of improving this method of timing the_Emer-

-gency Diesel Generator's starting sequence. No further cor-rective action is deemed necessary. .

Failure Data:

This is the first occurrence of this type for Emergency Diesel '

Generator 1B and this is the thirty-second report under this Specification.

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