ML19210D377

LER 79-090/03L-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

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: ML19210D375 ML19210D377
References
LER-79-090-03L-01, LER-79-90-3L-1, NUDOCS 7911260371
Download: ML19210D377 (1)

Text

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7 8 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 0 4 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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36 31 l 0l 0l 0 0 lNl@ Nlg Al@ lJ[1l0l5lg 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. The  ;

[g 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. l 11 1411 7 8 9 80 STA S  % POWER oTH ER STATUS ISCO RY DISCOV E DESCRIPTION e l E lg l0 l 9 l 9 [gl NA l lA[glOperatorObservat" ion l ACTIVITY CONTENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION OF RELEASE l1lcl W @ (_Z_j@l NA l l NA l 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUVBE R TYPE DESCRIPTION 39 j z (} j zp; I 7 l0 0l0lh d hl NA I J U t- l PERSONNEL INJURIES NUMBER DESCRIPflON li la l 0 l 0 l 011l@l12 NA l 7 8 9 80 LOSS OF OR OAMAGE TO FACILITY TYPE DESCRIPTION -

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