ML19308D385

LER 78-001/03L-0:on 780103,3B Emergency Diesel Failed to Start During Maint on 3A Emergency Diesel Generator.Caused by Foreign Matter in Servo Booster Preventing Governor to Function Properly.Servo Booster Cleaned & Tested

ML19308D385
Person / Time
Site:	Crystal River
Issue date:	01/25/1978
From:	Cooper J FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19308D381	List: ML19308D380 ML19308D385
References
LER-78-001-03L, LER-78-1-3L, NUDOCS 8002270834
Download: ML19308D385 (2)

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SUPPLEMENTARY INFORMATION l

1. Report No.: 50-302/78-01/03L-0

2. Facility: Crystal River Unit #3 *

3. Report Date: 25 January 1978

4. Occurrence Date: 3 January 1978

5. Identification of Occurrence:

The "3B" emergency diesel generator failed to start contrary to Technical Specifications 3.8.1.1.b

6. Conditions Prior to Occurrence: Mode 1 power operation l

7. Description of Occurrence:

At 0807, while preparing to perform preplanned maintenance on "3A" emergency diesel generator, an operability test of "3B" emergency diesel generator was initiated. The "3B" diesel failed to start and the 1 Hour Action Statement of Technical Specification 3.8.1.1. was entered. The Units 1 and 2 shif t supervisor was notified and the cable tunnel surveillance SP-322 was initiated. -

The breaker verification surveillance SP-321 was initiated and the operability of "3A" emergency diesel generator was verified. Maintenance Work Request J.

1. 0-5936 was initiated and maintenance restored "3B" emergency diesel generator operable at 1338.

8. Designation of Apparent Cause:

The cause of this occurrence was determined to be foreign matter in the servo

! booster of the woodward governor.

9. Analysis of Occurrence:

There was no safety hazard to the Plant or general public as the "3A" emer-gency diesel generator was available and demonstrated operable.

10. Corrective Action:

i The servo booster was cleaned, tested and returned to service. The governor was drained, flushed and refilled with Diesel Motive type 488 oil,

11. Failure Data:

This is the fourth occurrence of this event as reported by LERs 77-94,77-128 and 77-158/03L-0. It is the second start failure due to foreign matter in the governor.

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