ML19273B449

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LER 1-77-95 on 771105:w/reactor in Run Mode,While Testing HPCI Turbine,Auxiliary HPCI Oil Pump Tripped,Resulting in Hcpi Turbine Trip.Caused by Shorting of Auxiliary Oil Pump Due to High Water Level in HPCI Room
ML19273B449
Person / Time
Site: Brunswick Duke Energy icon.png
Issue date: 12/02/1977
From: Banks H
CAROLINA POWER & LIGHT CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19273B448 List:
References
LER-1-77-95, NUDOCS 7904060436
Download: ML19273B449 (2)


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auxiliary HPCI oil pump tripped causing the HPCI turbine to trip.

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'ACSE CESCA:PTJCN The motor for the HPCI auxiliary oil pump was shorted out due to a high water level l

i-in the HPCI room.

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LER CONTINUATION -- RO# 1-77-95 Facility:

BSEP Unit #1 Event Date 11-5-77 CAUSE DESCRIPTION:

entering the HPCI room floor sump from the HPCI sump pump discharge line by back flow from the floor drain collecting tank.

CORRECTIVE ACTION:

The water was pumped out of the HPCI room and the auxiliary oil pump motor was replaced.

ACTION TO PREVENT RECURRENCE:

The HPCI room sumps will be kept pumped down and the sump pumps operable.

Several drain headers have been drilled and plugged to allow detection of leak sources before lower level equipment is flooded. An operating instruction is being prepared as a guide to the operators for lea'k identi-fication.

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