ML19339C551

LER 80-046/03L-0:on 801016,during Normal Operation Emergency Diesel Generator Would Not Start.Cause Not Known.No Problem Found During Troubleshooting.Procedures Revised to Require Leaving Alarm Annunciator as Is Until Failure Determined

ML19339C551
Person / Time
Site:	Crystal River
Issue date:	11/13/1980
From:	Hernandez V FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19339C549	List: ML19339C548 ML19339C551
References
LER-80-046-03L, LER-80-46-3L, NUDOCS 8011180589
Download: ML19339C551 (2)

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,,,,,i cation. There was no effect upon the . health or safety of the general public. One; to .. , I Diesel Generator and two independent offsite power supplies we're verified as  ;

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SUPPLEMENTARY INFORMATION

.-Report No.: 50-302/80-046/03L-0 Facility: Crystal River Unit #3

Report Date

13 November 1980 l Occurrence Date: 16 October 1980 Identification of Occurrence:

Failure to have the minimum required A.C. electrical power sources operable contrary to Technical Specification 3.8.1.1.

Cond;tions Prior to Occurrence: Mode 1 power operation (97%).

Description of Occurrence:

At 0640 during normal operation Emergency Diesel Generator EDG-1B failed to fast start in preparation for removing EDG-1A from ser-vice. A fast start was performed for EDG-1 A. One Emergency Diesel Generator and two (2) independent offsite power supplies were verified as operable redundant systems. Operability was re-

. stored at 2003 on 16 October 1980.

Designation of Apparent Cause:

The cause of this event is indeterminate. Local alarms had been

cleared before troubleshooting began. No problem was discovered I during troubleshooting.

Analysis of Occurrence:

! There was no effect upon the health or safety of the general public.

Corrective Action:

Procedures have been revised to require leaving the diesel local alarm annunciator "as is" until the failure can be determined.

In addition, all installed instruments which could cause a start failure or shutdown will be enecked by 15 December 1980.

Failure Data:

This is the second occurrence of this type and the twentieth re-port under this Specification.

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