05000324/LER-1980-087-03, /03L-0:on 801025,w/diesel Generator 2 Out of Svc for Maint,Generator 3 Failed to Start within Required 10-s. Caused by Defective Check Valve in Diesel 3 Fuel Oil Supply Line.Check Valve Replaced

/03L-0:on 801025,w/diesel Generator 2 Out of Svc for Maint,Generator 3 Failed to Start within Required 10-s. Caused by Defective Check Valve in Diesel 3 Fuel Oil Supply Line.Check Valve Replaced

ML19345A931
Person / Time
Site:	Brunswick
Issue date:	11/17/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19345A927	List: 05000324/LER-1980-087, Forwards LER 80-087/03L-0 05000324/LER-1980-087-03, /03L-0:on 801025,w/diesel Generator 2 Out of Svc for Maint,Generator 3 Failed to Start within Required 10-s. Caused by Defective Check Valve in Diesel 3 Fuel Oil Supply Line.Check Valve Replaced
References
LER-80-087-03L, LER-80-87-3L, NUDOCS 8011250426
Download: ML19345A931 (2)

LER-1980-087, /03L-0:on 801025,w/diesel Generator 2 Out of Svc for Maint,Generator 3 Failed to Start within Required 10-s. Caused by Defective Check Valve in Diesel 3 Fuel Oil Supply Line.Check Valve Replaced

Event date:
Report date:
3241980087R03 - NRC Website

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LICENSEE EVENT REPORT CONTROL SLOCK: l l

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REPORT D ATE 80 EVENT DESCRIPTION AND PROBASLE CONSEQUENCES h l 0181 l During the performance of required testing as a result of No. 2 Diesel Generator I

iO Ia1 I being out of service for maintenance, No. 3 Diesel Generator fai?ed to start l

10 l 41 l within the required 10 seconds. The No. 3 Diesel Generator was then declared l

10isl l inoperative as per Technical Specifications. This event did not affect the l

l0 le I i health or safety of the public.

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3J 34 JS 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS li lO ] l The cause of this event was a defective check valve in the No. 3 diesel fuel oil I

gl supply line. The check valve was replaced, and the diesel was succeRRfn11v I

gl tasted with a start time of 9.0 seconds.

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LER ATTACHMENT - RO NO. 2-80-87 Facility:

BSEP Unit No. 2 Event Date:

10-25-80 The def ective diesel fuel oil supply line check valve allowed the upstream fuel oil to leak back into the diesel fuel oil saddle storage tank after the diesel was shut down. When the diesel start sequence was initiated, the fuel oil supply line required repriming before any fuel oil reached the diesel cylinders, which caused the diesel start time to exceed 10 seconds.

As there is no history of events involving this particular check valve manu-factured by Perfect Circle, this is considered an isolated event with no further action required.

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