05000302/LER-1980-046-03, /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 Determin

/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: 05000302/LER-1980-046, Forwards LER 80-046/03L-0 05000302/LER-1980-046-03, /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 Determin
References
LER-80-046-03L, LER-80-46-3L, NUDOCS 8011180589
Download: ML19339C551 (2)

LER-1980-046, /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

Event date:
Report date:
3021980046R03 - NRC Website

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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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