05000321/LER-1979-090-03, /03L-0:on 791027,standby Plant Svc Pump 2P41-C002 Tripped & Would Not Restart.Caused by Blown Control Fuse Due to Dirty Contacts on Relays.Contacts Cleaned & Fuse Replaced

/03L-0:on 791027,standby Plant Svc Pump 2P41-C002 Tripped & Would Not Restart.Caused by Blown Control Fuse Due to Dirty Contacts on Relays.Contacts Cleaned & Fuse Replaced

ML19210D377
Person / Time
Site:	Hatch
Issue date:	11/20/1979
From:	Nix R GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19210D376	List: 05000321/LER-1979-090, Forwards LER 79-090/03L-0 05000321/LER-1979-090-03, /03L-0:on 791027,standby Plant Svc Pump 2P41-C002 Tripped & Would Not Restart.Caused by Blown Control Fuse Due to Dirty Contacts on Relays.Contacts Cleaned & Fuse Replaced
References
LER-79-090-03L-01, LER-79-90-3L-1, NUDOCS 7911260371
Download: ML19210D377 (1)

LER-1979-090, /03L-0:on 791027,standby Plant Svc Pump 2P41-C002 Tripped & Would Not Restart.Caused by Blown Control Fuse Due to Dirty Contacts on Relays.Contacts Cleaned & Fuse Replaced

Event date:
Report date:
3211979090R03 - NRC Website

text

'RC oRM3GS U.S, NUCLEAR REGULATORY COMMISSION (7-77)

LICENSEE EVENT REPORT er -

CONTROL DLOCK. l l

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l l 'lh-(PLEASE PthNT OR TYPE ALL HEQUIRED INFORMATION) 1 6

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7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE J0 67 CAT b8 CON'T 3gnC l L @ 0 l 5 l 0 l 0 l 0 l 3 l 2 l 1 Ql 1 l 1 l 0 l 2 l 7 l 9 l@l1 l 1 l2 l 0 l 7 l9l@

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60 61 DOCKET NUMBEH Od 63 EVENT DATE 14 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l With the reactor in the run mode, while the IB diesel generator was being run, the l

lo l3l l standby plant service water pump (2P41-C002) tripped and would not restart.

The l

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l 2P41-C002 pump is required to be operable per Unit I Technical Specification l

0 s l 4.5.J.2.c and Unit II Technical Specification 3.7.1.2.c.

Public health and safety l

lO le l l were not affected by this incident. This is a repetitive occurrence and previously l 0

7 l reported on LER 50-366/1979-50.

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, 33 34 JS 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lilol l The 2P41-C002 pump failure was due to a blown control fuse.

The blown fuse was li li l l caused by dirty contacts on the IB diesel low speed and engine run relays.

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contacts were cleaned and the control fuse replaced. Procedure IINP-1-3801, diesel l lil3ll generator manual start, was then performed and the pump operated satisfactorily.

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